Canadian Climate Normals 1991-2020 Data

Temperature and Precipitation Graph

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Temperature and Precipitation Graph for 1991 to 2020 Canadian Climate Normals
CALGARY (AIRPORT)

Symbol	Description
	Daily Maximum Temperature (°C)
	Daily Average Temperature (°C)
	Daily Minimum Temperature (°C)
	Precipitation (mm)

Normals Data

The minimum number of years used to calculate these Normals is indicated by a code for each element. A "+" beside an extreme date indicates that this date is the first occurrence of the extreme value. Values and dates in bold indicate all-time extremes at the location for that reporting period. Normal period extremes (NPE) are calculated for the 30-year normal period, whereas long-term extremes (LTE) extend further back in time to the earliest date available in the data series.

Data used in the calculation of these Normals may be subject to further quality assurance checks. This may result in minor changes to some values presented here.

CALGARY (AIRPORT)
ALBERTA

Temperature

1991 to 2020 Canadian Climate Normals Data
Temperature
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Daily Average (°C)	-7.6	-5.9	-2.2	4.5	9.9	13.7	16.9	16.2	11.5	4.9	-1.7	-6.3	4.5	C
Standard Deviation	3.7	4.1	3.6	1.8	1.8	1.1	1.5	1.4	1.8	2.0	3.1	4.0	3.3	C
Daily Maximum (°C)	-1.5	0.1	3.8	10.8	16.4	19.7	23.5	23.1	18.3	11.1	4.1	-0.4	10.8	C
Daily Minimum (°C)	-13.5	-11.8	-8.1	-1.9	3.4	7.7	10.2	9.2	4.7	-1.3	-7.5	-12.1	-1.8	C

1991 to 2020 Canadian Climate Normals Data
Temperature Extremes (Normal Period)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Maximum Daily Mean (°C)	9.5	13.1	13.5	17.5	21.3	24.3	24.8	26.2	22.6	20.0	14.5	9.2
Date (yyyy/dd)	2003/ 07	1992/ 27	2015/ 27	1992/ 27	2013/ 12	2002/ 27	2013/ 02	2018/ 10	2011/ 23	1991/ 10	2005/ 22	1997/ 14
Minimum Daily Mean (°C)	-33.9	-27.5	-28.4	-14.8	-4.7	4.2	5.4	2.3	-2.5	-17.8	-27.1	-33.4
Date (yyyy/dd)	1997/ 25	1994/ 07	2003/ 08	2002/ 02	2002/ 03	2009/ 06	1999/ 15	1992/ 23	2000/ 22	1991/ 28	1996/ 23	1992/ 29
Extreme Maximum (°C)	17.6	22.6	25.4	27.9	30.9	33.5	34.2	36.5	33.2	27.2	23.1	19.5
Date (yyyy/dd)	2003/ 07	1992/ 27	2004/ 30	2015/ 28	2006/ 17	2002/ 27	2002/ 13	2018/ 10	2009/ 23	2008/ 01	2020/ 02	1999/ 27
Minimum Daily Maximum (°C)	-30.0	-24.8	-24.8	-10.0	-2.6	7.3	8.3	5.3	-1.6	-10.6	-23.8	-31.2
Date (yyyy/dd)	2004/ 27	2019/ 04	2003/ 08	2000/ 14	1996/ 08	2010/ 10	1999/ 15	1992/ 23	2019/ 29	1991/ 28	2006/ 27	1992/ 29
Maximum Daily Minimum (°C)	6.1	4.8	6.5	13.0	14.0	17.3	17.5	16.3	16.6	14.1	9.0	4.7
Date (yyyy/dd)	2015/ 22	1997/ 16	2015/ 14	1992/ 27	2013/ 12	2015/ 29	2020/ 31	1994/ 04	2011/ 23	1991/ 10	2005/ 22	2014/ 11
Extreme Minimum (°C)	-39.7	-33.0	-32.3	-20.4	-8.3	-1.9	1.2	-3.2	-7.8	-25.0	-31.3	-38.2
Date (yyyy/dd)	1997/ 11	1996/ 02	2003/ 09	2002/ 02	2013/ 01	2000/ 01	1999/ 16	1992/ 25	2000/ 22	1991/ 28	1996/ 23	1996/ 28

1991 to 2020 Canadian Climate Normals Data
Temperature Extremes (Long-Term)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Maximum Daily Mean (°C)	10.7	13.1	13.6	18.6	22.5	24.3	25.4	26.2	22.6	20.3	15.6	11.4
Date (yyyy/dd)	1987/ 11	1992/ 27	1926/ 22	1926/ 28	1986/ 28	2002/ 27	1984/ 26	2018/ 10	2011/ 23	1980/ 05	1978/ 01	1956/ 29
Minimum Daily Mean (°C)	-41.7	-40.3	-33.4	-24.5	-8.7	1.7	5.4	2.3	-7.0	-20.7	-31.4	-39.5
Date (yyyy/dd)	1893/ 31	1893/ 03	1951/ 06	1954/ 02	1954/ 01	1951/ 06	1999/ 15	1992/ 23	1926/ 23	1984/ 31	1985/ 26	1924/ 16
Extreme Maximum (°C)	17.6	22.6	25.4	29.4	32.4	35.0	36.1	36.5	33.3	29.4	23.1	19.5
Date (yyyy/dd)	2003/ 07	1992/ 27	2004/ 30	1926/ 29	1986/ 30	1926/ 26	1919/ 15+	2018/ 10	1967/ 01	1889/ 05+	2020/ 02	1999/ 27
Minimum Daily Maximum (°C)	-38.9	-37.8	-30.0	-18.9	-2.6	3.3	7.8	5.3	-4.4	-16.7	-29.0	-36.7
Date (yyyy/dd)	1893/ 31	1893/ 03	1951/ 06	1954/ 02	1996/ 08	1951/ 06	1884/ 02	1992/ 23	1934/ 23	1935/ 29	1985/ 26	1924/ 16
Maximum Daily Minimum (°C)	7.0	6.6	7.2	13.0	16.7	18.0	18.3	18.3	16.6	15.0	10.6	6.7
Date (yyyy/dd)	1987/ 11	1988/ 20	1926/ 22	1992/ 27	1958/ 29	1988/ 26	1959/ 24	1893/ 06+	2011/ 23	1980/ 05	1950/ 04	1925/ 06+
Extreme Minimum (°C)	-44.4	-45.0	-37.2	-30.0	-16.7	-3.3	-0.6	-3.2	-13.3	-25.7	-35.0	-42.8
Date (yyyy/dd)	1893/ 31	1893/ 04	1951/ 08+	1954/ 02	1954/ 01	1891/ 08+	1884/ 05	1992/ 25	1926/ 24	1984/ 31	1893/ 30	1924/ 17

Precipitation

1991 to 2020 Canadian Climate Normals Data
Precipitation
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Rainfall (mm)	0.1	0.1	1.1	12.6	52.5	112.5	65.7	53.5	33.8	8.3	1.7	0.3	342.2	C
Snowfall (cm)	16.6	16.9	23.8	22.9	9.6	0.2	0.0	0.0	2.2	11.5	18.8	16.3	138.7	C
Precipitation (mm)	10.0	11.8	17.7	29.6	61.1	112.7	65.7	53.8	37.1	17.1	16.3	12.5	445.4	C
Average Snow Depth (cm)	5	3	3	1	0	0	0	0	0	1	2	5	2	C
Median Snow Depth (cm)	4	3	2	0	0	0	0	0	0	0	1	4	1	C
Snow Depth at Month-end (cm)	3	3	2	0	0	0	0	0	1	1	4	6	2	C

1991 to 2020 Canadian Climate Normals Data
Precipitation Extremes (Normal Period)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Extreme Daily Rainfall (mm)	1.7	1.0	6.3	28.8	51.2	72.4	53.6	52.4	64.8	13.8	9.2	3.4
Date (yyyy/dd)	2019/ 27	1991/ 26	1991/ 22	1999/ 20	2013/ 24	2007/ 05	1998/ 04	1999/ 11	2005/ 10	2013/ 10	1992/ 27	1995/ 19
Extreme Daily Snowfall (cm)	21.0	14.4	24.0	32.2	27.8	3.2	0.0	0.4	24.6	15.2	17.8	15.2
Date (yyyy/dd)	2013/ 10	2006/ 22	1998/ 16	2003/ 26	1997/ 20	2009/ 06	1991/ 01+	1992/ 22+	2019/ 29	1996/ 01	2019/ 19	2020/ 22
Extreme Daily Precipitation (mm)	16.6	10.0	25.0	29.8	51.2	72.4	53.6	52.4	64.8	13.8	15.2	14.0
Date (yyyy/dd)	1996/ 03	2000/ 09	1998/ 16	1999/ 20	2013/ 24	2007/ 05	1998/ 04	1999/ 11	2005/ 10	2013/ 10	2019/ 19	2020/ 22
Extreme Snow Depth (cm)	36	31	38	24	22	0	0	0	26	16	23	30
Date (yyyy/dd)	1997/ 10+	2018/ 09+	1998/ 18	1996/ 02	2002/ 07	1991/ 01+	1991/ 01+	1991/ 01+	2019/ 30	2018/ 04	1996/ 29	1996/ 30+

1991 to 2020 Canadian Climate Normals Data
Precipitation Extremes (Long-Term)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Extreme Daily Rainfall (mm)	7.6	6.4	23.4	37.1	65.0	79.2	95.3	80.8	92.6	45.7	9.2	6.4
Date (yyyy/dd)	1902/ 07	1885/ 26	1910/ 23	1912/ 30	1902/ 18	1932/ 01	1927/ 15	1945/ 25	1985/ 12	1915/ 01	1992/ 27	1885/ 03
Extreme Daily Snowfall (cm)	25.4	27.7	24.1	45.7	48.4	24.9	0.3	6.1	24.6	29.7	35.6	21.8
Date (yyyy/dd)	1913/ 03	1951/ 10	1889/ 13	1932/ 21	1981/ 06	1951/ 06	1918/ 23	1900/ 25	2019/ 29	1914/ 04	1914/ 13	1889/ 11
Extreme Daily Precipitation (mm)	25.4	27.7	25.0	45.7	65.0	79.2	95.3	80.8	92.6	45.7	35.6	21.8
Date (yyyy/dd)	1913/ 03	1951/ 10	1998/ 16	1932/ 21	1902/ 18	1932/ 01	1927/ 15	1945/ 25	1985/ 12	1915/ 01	1914/ 13	1889/ 11
Extreme Snow Depth (cm)	36	37	38	33	22	0	0	0	26	23	25	30
Date (yyyy/dd)	1997/ 10+	1978/ 13+	1998/ 18	1966/ 27	2002/ 07	1955/ 01+	1955/ 01+	1955/ 01+	2019/ 30	1957/ 22	1965/ 15+	1996/ 30+

Days With ...

1991 to 2020 Canadian Climate Normals Data
Days With ...
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Freezing Rain or Freezing Drizzle	0.53	0.43	0.83	0.53	0.13	0.0	0.0	0.0	0.03	0.37	0.83	0.27	4.0	A
Thunderstorms	0.0	0.0	0.20	0.40	1.9	6.3	8.6	5.3	1.2	0.13	0.0	0.03	24.1	A
Hail	0.0	0.03	0.07	0.07	0.23	0.83	0.93	0.57	0.13	0.0	0.03	0.0	2.9	A
Fog, Ice Fog, or Freezing Fog	2.2	2.0	2.4	1.3	0.57	0.33	0.20	0.40	0.60	1.7	2.3	1.4	15.4	A
Smoke or Haze	0.53	0.83	0.63	0.50	0.73	0.27	1.3	2.9	0.77	0.30	0.37	0.17	9.3	A

Days with Maximum Temperature

1991 to 2020 Canadian Climate Normals Data
Days with Maximum Temperature
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
<= -30 °C	0.04	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.09	0.13	C
<= -20 °C	2.2	0.50	0.43	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.39	1.1	4.7	C
<= -10 °C	6.8	4.3	2.8	0.04	0.0	0.0	0.0	0.0	0.0	0.09	2.2	4.6	20.8	C
<= 0 °C	14.4	11.9	8.6	2.3	0.26	0.0	0.0	0.0	0.08	2.5	7.6	13.5	61.2	C
> 0 °C	16.6	16.4	22.4	27.7	30.7	30.0	31.0	31.0	29.9	28.5	22.4	17.5	304.1	C
> 10 °C	2.5	3.1	8.6	17.5	25.8	29.5	31.0	30.5	26.8	18.6	6.1	2.2	202.1	C
> 20 °C	0.0	0.04	0.13	2.5	8.3	13.4	24.4	22.5	12.7	3.3	0.17	0.0	87.4	C
> 30 °C	0.0	0.0	0.0	0.0	0.04	0.14	1.9	2.2	0.50	0.0	0.0	0.0	4.8	C
> 35 °C	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	C
> 40 °C	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	C

Days with Minimum Temperature

1991 to 2020 Canadian Climate Normals Data
Days with Minimum Temperature
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
> 20 °C	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	C
> 10 °C	0.0	0.0	0.0	0.04	0.87	4.4	15.2	11.6	1.6	0.23	0.0	0.0	34.0	C
> 0 °C	1.2	0.79	2.0	10.0	24.7	29.7	31.0	30.9	26.7	12.5	2.3	0.91	172.6	C
<= 2 °C	30.5	28.0	30.4	25.4	12.2	1.2	0.05	0.41	7.2	24.1	29.1	30.7	219.2	C
<= 0 °C	29.8	27.5	29.0	20.0	6.4	0.27	0.0	0.14	3.3	18.5	27.7	30.1	192.7	C
< -2 °C	28.6	26.3	25.7	13.5	2.4	0.0	0.0	0.09	0.96	12.3	24.4	28.9	163.1	C
< -10 °C	18.5	15.2	9.0	1.5	0.0	0.0	0.0	0.0	0.0	1.6	9.0	17.6	72.3	C
< -20 °C	7.7	4.8	2.7	0.04	0.0	0.0	0.0	0.0	0.0	0.14	1.7	4.6	21.6	C
< -30 °C	1.5	0.13	0.35	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.17	0.87	3.0	C
< -40 °C	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	C

Days with Rainfall

1991 to 2020 Canadian Climate Normals Data
Days with Rainfall
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
>= 0.2 mm	0.30	0.22	0.83	4.8	10.0	14.5	12.9	10.0	7.7	4.4	1.5	0.22	67.5	C
>= 5 mm	0.0	0.0	0.04	0.57	3.0	5.9	4.0	3.6	2.1	0.50	0.09	0.0	19.8	C
>= 10 mm	0.0	0.0	0.0	0.39	1.7	3.9	2.0	1.6	0.74	0.05	0.0	0.0	10.3	C
>= 25 mm	0.0	0.0	0.0	0.04	0.30	1.4	0.21	0.33	0.13	0.0	0.0	0.0	2.4	C
>= 50 mm	0.0	0.0	0.0	0.0	0.0	0.13	0.04	0.04	0.04	0.0	0.0	0.0	0.25	C
>= 100 mm	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	C

Days with Snowfall

1991 to 2020 Canadian Climate Normals Data
Days with Snowfall
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
>= 0.2 cm	7.8	7.9	9.3	7.0	2.4	0.08	0.0	0.13	0.96	4.6	7.1	7.7	54.9	C
>= 5 cm	0.65	0.61	1.6	1.2	0.65	0.0	0.0	0.0	0.13	0.64	1.3	0.91	7.7	C
>= 10 cm	0.22	0.17	0.38	0.50	0.26	0.0	0.0	0.0	0.0	0.23	0.32	0.13	2.2	C
>= 25 cm	0.0	0.0	0.0	0.04	0.04	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.08	C
>= 40 cm	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	C

Days with Precipitation

1991 to 2020 Canadian Climate Normals Data
Days with Precipitation
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
>= 0.2 mm	7.4	7.8	8.8	9.8	11.1	14.5	12.9	10.4	8.3	7.8	8.0	7.2	114.1	C
>= 1 mm	3.6	4.0	4.3	5.9	8.2	11.3	9.2	7.4	6.0	4.8	4.1	3.4	72.3	C
>= 5 mm	0.22	0.29	0.92	1.6	3.6	5.9	4.0	3.6	2.3	1.1	0.96	0.58	25.0	C
>= 10 mm	0.04	0.04	0.17	0.63	1.9	3.9	2.0	1.6	0.88	0.18	0.13	0.17	11.6	C
>= 25 mm	0.0	0.0	0.04	0.08	0.30	1.4	0.21	0.32	0.13	0.0	0.0	0.0	2.5	C
>= 50 mm	0.0	0.0	0.0	0.0	0.0	0.13	0.04	0.04	0.04	0.0	0.0	0.0	0.25	C
>= 100 mm	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	C

Days with Snow Depth

1991 to 2020 Canadian Climate Normals Data
Days with Snow Depth
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
>= 1 cm	20.7	18.1	14.0	4.7	1.5	0.0	0.0	0.0	0.19	3.2	11.2	19.0	92.5	C
>= 5 cm	10.4	8.5	8.2	2.5	0.73	0.0	0.0	0.0	0.05	1.7	6.2	10.4	48.6	C
>= 10 cm	4.7	2.6	2.6	1.2	0.14	0.0	0.0	0.0	0.0	0.38	2.0	5.5	19.1	C
>= 20 cm	1.3	0.04	0.36	0.23	0.09	0.0	0.0	0.0	0.0	0.0	0.29	1.2	3.5	C
>= 30 cm	0.32	0.0	0.09	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.09	0.50	C
>= 50 cm	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	C
>= 100 cm	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	C

Wind

1991 to 2020 Canadian Climate Normals Data
Wind
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Speed (km/h)	13.4	13.2	14.2	15.5	15.4	14.7	13.4	12.5	12.8	13.8	13.3	13.1	13.8	A
Most Frequent Direction	S	S	S	N	N	N	N	N	S	S	S	S	S	A
Days with Winds >= 52 km/h	2.8	1.5	2.0	1.7	1.5	1.1	1.3	1.1	1.4	2.0	2.1	2.7	21.0	C
Days with Winds >= 63 km/h	0.64	0.27	0.32	0.55	0.38	0.18	0.38	0.10	0.10	0.62	0.57	0.71	4.8	C
Days with Gusts >= 90 km/h	0.16	0.15	0.05	0.05	0.11	0.11	0.16	0.05	0.0	0.17	0.06	0.17	1.2	D

1991 to 2020 Canadian Climate Normals Data
Wind Extremes (Normal Period)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Extreme Speed (km/h)	76	82	63	78	67	67	78	65	61	93	72	70
Date (yyyy/dd)	1996/ 11	1995/ 09	2009/ 05	2010/ 08	2006/ 02+	1994/ 24	1992/ 31	2009/ 03	1996/ 17	1993/ 27	1997/ 28	2004/ 03
Direction of Extreme Speed	W	N	N	N	N	W	NE	N	NW	N	W	W
Extreme Gust Speed (km/h)	102	107	93	95	95	107	96	96	84	111	106	107
Date (yyyy/dd)	1997/ 30	1995/ 09	1996/ 15	2010/ 08	1997/ 17	2004/ 21	1992/ 31+	2012/ 14	2020/ 24	1993/ 27	1993/ 20	1991/ 21
Direction of Extreme Gust Speed	W	N	N	NW	N	N	NE	NW	W	N	W	W

1991 to 2020 Canadian Climate Normals Data
Wind Extremes (Long-Term)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Extreme Speed (km/h)	80	89	85	89	85	82	80	80	84	93	77	90
Date (yyyy/dd)	1974/ 01	1972/ 16	1988/ 27	1974/ 26	1976/ 11	1963/ 22	1959/ 05+	1973/ 05	1964/ 05	1993/ 27	1970/ 19	1958/ 31
Direction of Extreme Speed	N	NW	NW	NW	N	N	W	N	N	N	NW	N
Extreme Gust Speed (km/h)	127	126	114	116	121	127	122	109	111	117	113	111
Date (yyyy/dd)	1976/ 27	1972/ 16	1974/ 21	1974/ 26	1976/ 11	1956/ 10	1971/ 23	1973/ 05	1984/ 06	1989/ 10	1975/ 03	1962/ 21+
Direction of Extreme Gust Speed	W	N	N	N	N	S	N	N	NW	NW	W	N

Degree Days

1991 to 2020 Canadian Climate Normals Data
Degree Days
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Above 24 °C	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	C
Above 18 °C	0.0	0.0	0.0	0.0	0.6	3.5	20.8	16.0	2.7	0.1	0.0	0.0	43.7	C
Above 15 °C	0.0	0.0	0.0	0.2	6.1	18.1	67.9	58.1	14.9	1.2	0.0	0.0	166.4	C
Above 10 °C	0.0	0.2	0.4	8.5	48.4	106.7	206.0	185.1	79.9	13.8	0.7	0.0	649.7	C
Above 5 °C	2.4	2.7	9.9	51.7	153.9	250.5	360.4	337.0	201.5	66.5	9.7	1.7	1447.8	C
Above 0 °C	21.1	21.8	61.6	153.1	299.0	400.5	515.4	491.7	347.1	174.8	50.3	19.6	2555.9	C
Below 0 °C	256.7	187.0	121.0	20.3	1.0	0.0	0.0	0.0	0.5	22.6	108.6	213.1	930.7	C
Below 5 °C	393.0	309.4	224.3	68.9	11.0	0.0	0.0	0.3	4.8	69.2	218.0	350.2	1649.1	C
Below 10 °C	545.6	448.4	369.8	175.8	60.4	6.3	0.6	3.4	33.2	171.6	359.0	503.5	2677.5	C
Below 15 °C	700.6	589.6	524.4	317.4	173.1	67.6	17.5	31.4	118.3	313.9	508.3	658.5	4020.6	C
Below 18 °C	793.6	674.5	617.4	407.2	260.6	143.0	63.4	82.3	196.1	405.9	598.3	751.5	4993.7	C

Quintiles

1991 to 2020 Canadian Climate Normals Data
Quintiles
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Quintile 1 (Lower Bound)	2.0	0.0	1.3	4.0	7.1	28.3	16.7	14.2	2.2	1.8	0.6	0.7
Quintile 1 (Upper Bound)	5.7	3.7	7.8	12.6	29.8	58.5	32.6	32.1	17.5	8.9	8.7	4.6
Quintile 2 (Upper Bound)	7.4	9.4	13.7	18.5	47.3	90.1	50.5	48.8	26.4	14.2	11.6	7.8
Quintile 3 (Upper Bound)	10.0	12.4	17.7	29.4	63.5	113.2	66.6	58.4	36.5	17.5	15.1	13.5
Quintile 4 (Upper Bound)	11.4	19.8	25.7	52.0	89.3	140.0	82.3	83.6	54.6	24.1	21.8	18.4
Quintile 5 (Upper Bound)	27.8	28.7	59.4	81.8	110.6	247.6	133.4	108.2	86.0	49.4	42.7	37.5

Humidex

1991 to 2020 Canadian Climate Normals Data
Humidex
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Days with Humidex >= 30	0.0	0.0	0.0	0.0	0.04	0.52	4.4	3.1	0.46	0.0	0.0	0.0	8.6	A
Days with Humidex >= 35	0.0	0.0	0.0	0.0	0.0	0.0	0.18	0.11	0.0	0.0	0.0	0.0	0.29	A
Days with Humidex >= 40	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	A

1991 to 2020 Canadian Climate Normals Data
Humidex Extremes (Normal Period)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Extreme Humidex	17.3	21.9	25.2	27.8	30.6	33.2	36.9	36.4	32.5	27.2	22.6	19.4
Date (yyyy/dd)	2003/ 07	1992/ 27	2004/ 30	2015/ 28	2006/ 17	2008/ 30	2002/ 13	2018/ 10	2009/ 23	2008/ 01	2020/ 02	1999/ 27

1991 to 2020 Canadian Climate Normals Data
Humidex Extremes (Long-Term)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Extreme Humidex	17.3	21.9	25.2	27.8	31.6	33.3	36.9	36.4	32.9	28.7	22.6	19.4
Date (yyyy/dd)	2003/ 07	1992/ 27	2004/ 30	2015/ 28	1956/ 31	1961/ 16	2002/ 13	2018/ 10	1967/ 05	1980/ 06	2020/ 02	1999/ 27

Wind Chill

1991 to 2020 Canadian Climate Normals Data
Wind Chill
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Days with Wind Chill < -20	12.0	9.3	5.6	0.54	0.0	0.0	0.0	0.0	0.0	0.68	4.0	9.8	42.0	A
Days with Wind Chill < -30	6.1	2.6	1.6	0.0	0.0	0.0	0.0	0.0	0.0	0.07	1.1	3.0	14.5	A
Days with Wind Chill < -40	0.89	0.07	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.14	0.50	1.6	A
Days with Wind Chill < -50	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	A

1991 to 2020 Canadian Climate Normals Data
Wind Chill Extremes (Normal Period)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Extreme Wind Chill	-48.5	-41.9	-39.5	-25.6	-15.9	-4.7	0.0	-4.1	-11.0	-32.2	-40.8	-47.2
Date (yyyy/dd)	2008/ 28	2019/ 10	1995/ 06	2018/ 06+	2002/ 03	2000/ 01	1991/ 01+	1992/ 24	2000/ 23	1991/ 28	2006/ 28	1996/ 28

1991 to 2020 Canadian Climate Normals Data
Wind Chill Extremes (Long-Term)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Extreme Wind Chill	-52.1	-52.6	-44.7	-37.1	-23.7	-5.8	0.0	-4.1	-12.5	-34.3	-47.9	-55.1
Date (yyyy/dd)	1954/ 16	1989/ 01	1976/ 02	1954/ 01	1954/ 01	1969/ 11	1953/ 01+	1992/ 24	1972/ 25	1984/ 31	1985/ 26	1964/ 15

Humidity

1991 to 2020 Canadian Climate Normals Data
Humidity
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Average Vapour Pressure (kPa)	0.3	0.3	0.4	0.5	0.7	1.0	1.2	1.1	0.8	0.5	0.4	0.3	0.6	A
Average Relative Humidity - 0600LST (%)	67.7	69.8	71.8	72.2	73.1	76.9	78.5	79.2	76.3	70.6	69.7	67.1	72.7	A
Average Relative Humidity - 1500LST (%)	55.7	54.7	50.2	42.7	43.8	49.2	46.8	44.3	44.3	45.3	54.2	56.3	49.0	A

Pressure

1991 to 2020 Canadian Climate Normals Data
Pressure
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Average Station Pressure (kPa)	88.8	88.8	88.8	88.8	89.0	88.9	89.1	89.2	89.1	88.9	88.7	88.7	88.9	A
Average Sea Level Pressure (kPa)	101.8	101.8	101.6	101.6	101.5	101.4	101.5	101.6	101.6	101.6	101.6	101.7	101.6	A

Visibility (hours with)

1991 to 2020 Canadian Climate Normals Data
Visibility (hours with)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
< 1 km	10.1	11.1	11.7	6.9	2.3	0.4	0.3	0.8	1.8	7.3	11.0	6.3	69.9	A
1 to 9 km	99.9	106.6	111.9	69.6	47.1	25.2	14.2	47.5	40.8	48.0	91.6	90.2	792.6	A
> 9 km	633.7	560.8	620.1	643.2	694.3	693.6	728.5	695.1	676.8	688.0	617.1	646.8	7898.0	A

Cloud Amount (hours with)

1991 to 2020 Canadian Climate Normals Data
Cloud Amount (hours with)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
0 to 2 tenths	187.3	181.9	154.2	132.8	135.9	130.2	231.1	232.5	234.3	207.3	201.8	203.1	2232.4	D
3 to 7 tenths	149.7	135.3	173.0	176.5	190.3	196.2	231.9	199.4	168.2	166.4	149.3	173.3	2109.7	D
8 to 10 tenths	407.1	361.8	416.8	410.6	417.8	393.6	281.0	312.1	317.6	370.3	368.8	367.6	4425.0	D

Frost-Free

1991 to 2020 Canadian Climate Normals Data
Frost-Free
	Date/Days	Code
Average Date of Last Spring Frost	May 21	D
Average Date of First Fall Frost	Sept 18	D
Average Length of Frost-Free Period	119 Days	D

1991 to 2020 Canadian Climate Normals Data
Frost-Free
	10%	25%	33%	50%	66%	75%	90%
Probability of last temperature in spring <= 0°C, on or after (Date)	Jun 11	Jun 05	May 31	May 26	May 21	May 19	May 11
Probability of first temperature in fall <= 0°C, on or before (Date)	Aug 27	Sep 03	Sep 06	Sep 10	Sep 15	Sep 19	Sep 27
Probability of frost-free period equal to or less than indicated period (Days)	80	93	97	106	114	118	132

Snow-Period

1991 to 2020 Canadian Climate Normals Data
Snow-Period
	Date	Code
Average Date of Last Spring Snowfall	May 8	A
Average Date of First Fall Snowfall	Oct 3	A

Legend

A = WMO "3 and 5 rule" (i.e. no more than 3 consecutive and no more than 5 total missing for either temperature or precipitation)
B = At least 25 years
C = At least 20 years

D = At least 15 years
+ = Most recent occurrence of the extreme value

Element Analytics

Statistics listed below are provided as a guide to determine the validity of Normals and Extremes calculations. For example, a composite station with 30 years of record between 1991 and 2020 with no missing years would be a more reliable normal than a composite station with 15 years of record and 2 missing years. Less than 100% possible observations indicates that out of the total number of observations used, some records were missing.

CALGARY (AIRPORT)
ALBERTA

Temperature

1991 to 2020 Canadian Climate Normals Element Analytics
Temperature
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Daily Average (°C)	1991	2020	30	6	9718	88.6
Standard Deviation	1991	2020	30	6	9718	88.6
Daily Maximum (°C)	1991	2020	30	6	9754	89
Daily Minimum (°C)	1991	2020	30	6	9718	88.6

1991 to 2020 Canadian Climate Normals Element Analytics
Temperature Extremes (Normal Period)
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Maximum Daily Mean (°C)	1991	2020			10457	95.4
Minimum Daily Mean (°C)	1991	2020			10457	95.4
Extreme Maximum (°C)	1991	2020			10475	95.6
Minimum Daily Maximum (°C)	1991	2020			10475	95.6
Maximum Daily Minimum (°C)	1991	2020			10461	95.4
Extreme Minimum (°C)	1991	2020			10461	95.4

1991 to 2020 Canadian Climate Normals Element Analytics
Temperature Extremes (Long-Term)
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Maximum Daily Mean (°C)	1881	2020			49499	98.9
Minimum Daily Mean (°C)	1881	2020			49499	98.9
Extreme Maximum (°C)	1881	2020			49548	98.9
Minimum Daily Maximum (°C)	1881	2020			49548	98.9
Maximum Daily Minimum (°C)	1881	2020			49504	98.9
Extreme Minimum (°C)	1881	2020			49504	98.9

Precipitation

1991 to 2020 Canadian Climate Normals Element Analytics
Precipitation
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Rainfall (mm)	1991	2020	24	8	8463	77.2
Snowfall (cm)	1991	2020	24	8	8493	77.5
Precipitation (mm)	1991	2020	25	8	8674	79.2
Average Snow Depth (cm)	1991	2020	26	6	8222	75.4
Median Snow Depth (cm)	1991	2020	26	6	8222	75.4
Snow Depth at Month-end (cm)	1991	2020	30	7	295	82.4

1991 to 2020 Canadian Climate Normals Element Analytics
Precipitation Extremes (Normal Period)
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Extreme Daily Rainfall (mm)	1991	2020			10406	94.9
Extreme Daily Snowfall (cm)	1991	2020			10436	95.2
Extreme Daily Precipitation (mm)	1991	2020			10477	95.6
Extreme Snow Depth (cm)	1991	2020			8823	81

1991 to 2020 Canadian Climate Normals Element Analytics
Precipitation Extremes (Long-Term)
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Extreme Daily Rainfall (mm)	1881	2020			49477	98.8
Extreme Daily Snowfall (cm)	1881	2020			49507	98.8
Extreme Daily Precipitation (mm)	1881	2020			49548	98.9
Extreme Snow Depth (cm)	1955	2020			21971	91.4

Days With ...

1991 to 2020 Canadian Climate Normals Element Analytics
Days With ...
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Freezing Rain or Freezing Drizzle	1991	2020	30	0	10484	95.6
Thunderstorms	1991	2020	30	0	10486	95.7
Hail	1991	2020	30	0	10484	95.6
Fog, Ice Fog, or Freezing Fog	1991	2020	30	0	10484	95.6
Smoke or Haze	1991	2020	30	0	10484	95.6

Days with Maximum Temperature

1991 to 2020 Canadian Climate Normals Element Analytics
Days with Maximum Temperature
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
<= -30 °C	1991	2020	24	8	8398	76.7
<= -20 °C	1991	2020	24	8	8398	76.7
<= -10 °C	1991	2020	24	8	8398	76.7
<= 0 °C	1991	2020	24	8	8398	76.7
> 0 °C	1991	2020	24	8	8398	76.7
> 10 °C	1991	2020	24	8	8398	76.7
> 20 °C	1991	2020	24	8	8398	76.7
> 30 °C	1991	2020	24	8	8398	76.7
> 35 °C	1991	2020	24	8	8398	76.7
> 40 °C	1991	2020	24	8	8398	76.7

Days with Minimum Temperature

1991 to 2020 Canadian Climate Normals Element Analytics
Days with Minimum Temperature
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
> 20 °C	1991	2020	24	8	8367	76.4
> 10 °C	1991	2020	24	8	8367	76.4
> 0 °C	1991	2020	24	8	8367	76.4
<= 2 °C	1991	2020	24	8	8367	76.4
<= 0 °C	1991	2020	24	8	8367	76.4
< -2 °C	1991	2020	24	8	8367	76.4
< -10 °C	1991	2020	24	8	8367	76.4
< -20 °C	1991	2020	24	8	8367	76.4
< -30 °C	1991	2020	24	8	8367	76.4
< -40 °C	1991	2020	24	8	8367	76.4

Days with Rainfall

1991 to 2020 Canadian Climate Normals Element Analytics
Days with Rainfall
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
>= 0.2 mm	1991	2020	24	8	8463	77.2
>= 5 mm	1991	2020	24	8	8463	77.2
>= 10 mm	1991	2020	24	8	8463	77.2
>= 25 mm	1991	2020	24	8	8463	77.2
>= 50 mm	1991	2020	24	8	8463	77.2
>= 100 mm	1991	2020	24	8	8463	77.2

Days with Snowfall

1991 to 2020 Canadian Climate Normals Element Analytics
Days with Snowfall
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
>= 0.2 cm	1991	2020	24	8	8493	77.5
>= 5 cm	1991	2020	24	8	8493	77.5
>= 10 cm	1991	2020	24	8	8493	77.5
>= 25 cm	1991	2020	24	8	8493	77.5
>= 40 cm	1991	2020	24	8	8493	77.5

Days with Precipitation

1991 to 2020 Canadian Climate Normals Element Analytics
Days with Precipitation
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
>= 0.2 mm	1991	2020	25	8	8674	79.2
>= 1 mm	1991	2020	25	8	8674	79.2
>= 5 mm	1991	2020	25	8	8674	79.2
>= 10 mm	1991	2020	25	8	8674	79.2
>= 25 mm	1991	2020	25	8	8674	79.2
>= 50 mm	1991	2020	25	8	8674	79.2
>= 100 mm	1991	2020	25	8	8674	79.2

Days with Snow Depth

1991 to 2020 Canadian Climate Normals Element Analytics
Days with Snow Depth
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
>= 1 cm	1991	2020	24	6	7971	73.2
>= 5 cm	1991	2020	24	6	7971	73.2
>= 10 cm	1991	2020	24	6	7971	73.2
>= 20 cm	1991	2020	24	6	7971	73.2
>= 30 cm	1991	2020	24	6	7971	73.2
>= 50 cm	1991	2020	24	6	7971	73.2
>= 100 cm	1991	2020	24	6	7971	73.2

Wind

1991 to 2020 Canadian Climate Normals Element Analytics
Wind
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Speed (km/h)	1991	2020	29	2	246013	99.4
Most Frequent Direction	1991	2020	29	2	245917	99.9
Days with Winds >= 52 km/h	1991	2012	22	1	7821	90.2
Days with Winds >= 63 km/h	1991	2012	22	1	7821	90.2
Days with Gusts >= 90 km/h	1991	2017	21	4	6968	63.6

1991 to 2020 Canadian Climate Normals Element Analytics
Wind Extremes (Normal Period)
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Extreme Speed (km/h)	1991	2020			246500	99.5
Direction of Extreme Speed	1991	2020			246500	99.5
Extreme Gust Speed (km/h)	1991	2020			10188	93
Direction of Extreme Gust Speed	1991	2020			10188	93

1991 to 2020 Canadian Climate Normals Element Analytics
Wind Extremes (Long-Term)
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Extreme Speed (km/h)	1953	2020			579596	99.8
Direction of Extreme Speed	1953	2020			579596	99.8
Extreme Gust Speed (km/h)	1955	2020			23334	96.8
Direction of Extreme Gust Speed	1955	2020			23334	96.8

Degree Days

1991 to 2020 Canadian Climate Normals Element Analytics
Degree Days
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Above 24 °C	1991	2020	24	8	8367	76.4
Above 18 °C	1991	2020	24	8	8367	76.4
Above 15 °C	1991	2020	24	8	8367	76.4
Above 10 °C	1991	2020	24	8	8367	76.4
Above 5 °C	1991	2020	24	8	8367	76.4
Above 0 °C	1991	2020	24	8	8367	76.4
Below 0 °C	1991	2020	24	8	8367	76.4
Below 5 °C	1991	2020	24	8	8367	76.4
Below 10 °C	1991	2020	24	8	8367	76.4
Below 15 °C	1991	2020	24	8	8367	76.4
Below 18 °C	1991	2020	24	8	8367	76.4

Quintiles

1991 to 2020 Canadian Climate Normals Element Analytics
Quintiles
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Quintile 1 (Lower Bound)	1991	2020	30	6	9809	89.5
Quintile 1 (Upper Bound)	1991	2020	30	6	9809	89.5
Quintile 2 (Upper Bound)	1991	2020	30	6	9809	89.5
Quintile 3 (Upper Bound)	1991	2020	30	6	9809	89.5
Quintile 4 (Upper Bound)	1991	2020	30	6	9809	89.5
Quintile 5 (Upper Bound)	1991	2020	30	6	9809	89.5

Humidex

1991 to 2020 Canadian Climate Normals Element Analytics
Humidex
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Days with Humidex >= 30	1991	2020	29	2	245789	99.3
Days with Humidex >= 35	1991	2020	29	2	245789	99.3
Days with Humidex >= 40	1991	2020	29	2	245789	99.3

1991 to 2020 Canadian Climate Normals Element Analytics
Humidex Extremes (Normal Period)
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Extreme Humidex	1991	2020			246276	99.5

1991 to 2020 Canadian Climate Normals Element Analytics
Humidex Extremes (Long-Term)
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Extreme Humidex	1953	2020			579332	99.8

Wind Chill

1991 to 2020 Canadian Climate Normals Element Analytics
Wind Chill
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Days with Wind Chill < -20	1991	2020	29	2	245939	99.3
Days with Wind Chill < -30	1991	2020	29	2	245939	99.3
Days with Wind Chill < -40	1991	2020	29	2	245939	99.3
Days with Wind Chill < -50	1991	2020	29	2	245939	99.3

1991 to 2020 Canadian Climate Normals Element Analytics
Wind Chill Extremes (Normal Period)
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Extreme Wind Chill	1991	2020			246426	99.5

1991 to 2020 Canadian Climate Normals Element Analytics
Wind Chill Extremes (Long-Term)
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Extreme Wind Chill	1953	2020			579522	99.8

Humidity

1991 to 2020 Canadian Climate Normals Element Analytics
Humidity
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Average Vapour Pressure (kPa)	1991	2020	29	2	245863	99.3
Average Relative Humidity - 0600LST (%)	1991	2020	29	2	10250	99.4
Average Relative Humidity - 1500LST (%)	1991	2020	29	2	10250	99.4

Pressure

1991 to 2020 Canadian Climate Normals Element Analytics
Pressure
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Average Station Pressure (kPa)	1991	2020	29	2	246016	99.4
Average Sea Level Pressure (kPa)	1991	2020	29	2	246007	99.4

Visibility (hours with)

1991 to 2020 Canadian Climate Normals Element Analytics
Visibility (hours with)
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
< 1 km	1991	2020	29	2	246009	99.4
1 to 9 km	1991	2020	29	2	246009	99.4
> 9 km	1991	2020	29	2	246009	99.4

Cloud Amount (hours with)

1991 to 2020 Canadian Climate Normals Element Analytics
Cloud Amount (hours with)
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
0 to 2 tenths	1991	2012	20	4	157152	83
3 to 7 tenths	1991	2012	20	4	157152	83
8 to 10 tenths	1991	2012	20	4	157152	83

Frost-Free

1991 to 2020 Canadian Climate Normals Element Analytics
Frost-Free
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Average Date of Last Spring Frost	1991	2011	19	2	19	90.5
Average Date of First Fall Frost	1991	2011	19	2	19	90.5
Average Length of Frost-Free Period	1991	2011	19	2	19	90.5
Probability of last temperature in spring <= 0°C, on or after (Date)
10 %	1886	2011			122	96.8
25 %	1886	2011			122	96.8
33 %	1886	2011			122	96.8
50 %	1886	2011			122	96.8
66 %	1886	2011			122	96.8
75 %	1886	2011			122	96.8
90 %	1886	2011			122	96.8
Probability of first temperature in fall <= 0°C, on or before (Date)
10 %	1886	2011			122	96.8
25 %	1886	2011			122	96.8
33 %	1886	2011			122	96.8
50 %	1886	2011			122	96.8
66 %	1886	2011			122	96.8
75 %	1886	2011			122	96.8
90 %	1886	2011			122	96.8
Probability of frost-free period equal to or less than indicated period (Days)
10 %	1886	2011			122	96.8
25 %	1886	2011			122	96.8
33 %	1886	2011			122	96.8
50 %	1886	2011			122	96.8
66 %	1886	2011			122	96.8
75 %	1886	2011			122	96.8
90 %	1886	2011			122	96.8

Snow-Period

1991 to 2020 Canadian Climate Normals Element Analytics
Snow-Period
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Average Date of Last Spring Snowfall	1991	2020	30	0	30	100.0
Average Date of First Fall Snowfall	1991	2020	30	0	30	100.0

Composite Metadata / Threads

The Climate Normals, Averages, and Extremes are based on Canadian climate composite stations with at least 15 years of data between 1991 and 2020. Composite stations are comprised of one or more stations operated by the Meteorological Service of Canada (MSC) or its partners, where data from individual stations are joined together to create a 30-year data series for a given location. All stations (and associated metadata) used as part of the composite are listed below, alongside the threads used to calculate each Normals/Extremes element.

CALGARY (AIRPORT)
ALBERTA

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Composite Station Metadata

All stations used in the composite for all Normals and Extremes elements are listed. Station metadata includes station name, station identifiers, coordinates, and elevation.

Composite Station Name: CALGARY (AIRPORT)

Station Name	Climate ID	WMO ID	TC ID	Latitude	Longitude	Elevation (m)
CALGARY INT'L A	3031093	71877	YYC	51°06'50.000" N	114°01'13.000" W	1084.1
CALGARY INTL A	3031092	71877	YYC	51°07'21.000" N	114°00'48.000" W	1099.1

Composite Station Threads

Station composites are threaded from the beginning of the Normals period starting in 1991 to the end of 2020, where the predecessor site's data is used until the end of its period of record and is then joined to the current operating site to extend the time series. Threads are generated by climate element for hourly and daily data, and may vary due to differences in station history, instrumentation, meteorological data availability, data quality, or proximity.

Normals and Extremes elements are grouped based on the climate element used in its calculation. Normal period extremes (NPE) are calculated using threads for the 30-year normal period. For long-term (LT) elements and long-term extremes (LTE), the same Normals period threads are extended back in time to the earliest date of data available from the first station used in the data series. These use the 'LTE Start Date' instead of the 'Start Date', that applies to normals period elements and extremes (NPE).

For additional station metadata information, refer to the above section "Composite Station Metadata".

Composite Station Name: CALGARY (AIRPORT)

Temperature

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LTE Start Date	Start Date	End Date
Daily Average (°C) Standard Deviation Maximum Daily Mean (°C) (NPE, LTE) Minimum Daily Mean (°C) (NPE, LTE)	DAILY MEAN TEMPERATURE	CALGARY INT'L A	3031093	1881/10/01	1991/01/01	2012/07/11
	DAILY MEAN TEMPERATURE	CALGARY INTL A	3031092		2012/07/12	2020/12/31
Daily Maximum (°C) Extreme Maximum (°C) (NPE, LTE) Minimum Daily Maximum (°C) (NPE, LTE)	DAILY MAXIMUM TEMPERATURE	CALGARY INT'L A	3031093	1881/10/01	1991/01/01	2012/07/11
	DAILY MAXIMUM TEMPERATURE	CALGARY INTL A	3031092		2012/07/12	2020/12/31
Daily Minimum (°C) Maximum Daily Minimum (°C) (NPE, LTE) Extreme Minimum (°C) (NPE, LTE)	DAILY MINIMUM TEMPERATURE	CALGARY INT'L A	3031093	1881/10/01	1991/01/01	2012/07/11
	DAILY MINIMUM TEMPERATURE	CALGARY INTL A	3031092		2012/07/12	2020/12/31

Precipitation

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LTE Start Date	Start Date	End Date
Rainfall (mm) Extreme Daily Rainfall (mm) (NPE, LTE)	DAILY TOTAL RAINFALL	CALGARY INT'L A	3031093	1881/10/01	1991/01/01	2012/07/11
Rainfall (mm) Extreme Daily Rainfall (mm) (NPE, LTE)	DAILY TOTAL RAINFALL	CALGARY INTL A	3031092		2012/07/12	2020/12/31
Snowfall (cm) Extreme Daily Snowfall (cm) (NPE, LTE)	DAILY TOTAL SNOWFALL	CALGARY INT'L A	3031093	1881/10/01	1991/01/01	2012/07/11
Snowfall (cm) Extreme Daily Snowfall (cm) (NPE, LTE)	DAILY TOTAL SNOWFALL	CALGARY INTL A	3031092		2012/07/12	2020/12/31
Precipitation (mm) Extreme Daily Precipitation (mm) (NPE, LTE)	DAILY TOTAL PRECIPITATION	CALGARY INT'L A	3031093	1881/10/01	1991/01/01	2012/07/11
	DAILY TOTAL PRECIPITATION	CALGARY INTL A	3031092		2012/07/12	2020/12/31
Average Snow Depth (cm) Median Snow Depth (cm) Snow Depth at Month-end (cm) Extreme Snow Depth (cm) (NPE, LTE)	SNOW ON GROUND	CALGARY INT'L A	3031093	1955/01/01	1991/01/01	2012/07/11
	SNOW ON GROUND	CALGARY INTL A	3031092		2012/10/20	2020/12/31

Days With ...

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	Start Date	End Date
Freezing Rain or Freezing Drizzle	DAY WITH FREEZING RAIN	CALGARY INT'L A	3031093	1991/01/01	2012/07/11
Freezing Rain or Freezing Drizzle	DAY WITH FREEZING RAIN	CALGARY INTL A	3031092	2012/07/12	2020/12/31
Thunderstorms	DAY WITH THUNDERSTORMS	CALGARY INT'L A	3031093	1991/01/01	2012/07/11
Thunderstorms	DAY WITH THUNDERSTORMS	CALGARY INTL A	3031092	2012/07/12	2020/12/31
Hail	DAY WITH HAIL	CALGARY INT'L A	3031093	1991/01/01	2012/07/11
Hail	DAY WITH HAIL	CALGARY INTL A	3031092	2012/07/12	2020/12/31
Fog, Ice Fog, or Freezing Fog	DAY WITH FOG OR ICE FOG	CALGARY INT'L A	3031093	1991/01/01	2012/07/11
Fog, Ice Fog, or Freezing Fog	DAY WITH FOG OR ICE FOG	CALGARY INTL A	3031092	2012/07/12	2020/12/31
Smoke or Haze	DAY WITH SMOKE/HAZE	CALGARY INT'L A	3031093	1991/01/01	2012/07/11
Smoke or Haze	DAY WITH SMOKE/HAZE	CALGARY INTL A	3031092	2012/07/12	2020/12/31

Days with Maximum Temperature

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LTE Start Date	Start Date	End Date
<= -30 °C <= -20 °C <= -10 °C <= 0 °C > 0 °C > 10 °C > 20 °C > 30 °C > 35 °C > 40 °C	DAILY MAXIMUM TEMPERATURE	CALGARY INT'L A	3031093		1991/01/01	2012/07/11
	DAILY MAXIMUM TEMPERATURE	CALGARY INTL A	3031092		2012/07/12	2020/12/31

Days with Minimum Temperature

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LTE Start Date	Start Date	End Date
> 20 °C > 10 °C > 0 °C <= 2 °C <= 0 °C < -2 °C < -10 °C < -20 °C < -30 °C < -40 °C	DAILY MINIMUM TEMPERATURE	CALGARY INT'L A	3031093		1991/01/01	2012/07/11
	DAILY MINIMUM TEMPERATURE	CALGARY INTL A	3031092		2012/07/12	2020/12/31

Days with Rainfall

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LTE Start Date	Start Date	End Date
>= 0.2 mm >= 5 mm >= 10 mm >= 25 mm >= 50 mm >= 100 mm	DAILY TOTAL RAINFALL	CALGARY INT'L A	3031093		1991/01/01	2012/07/11
>= 0.2 mm >= 5 mm >= 10 mm >= 25 mm >= 50 mm >= 100 mm	DAILY TOTAL RAINFALL	CALGARY INTL A	3031092		2012/07/12	2020/12/31

Days With Snowfall

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LTE Start Date	Start Date	End Date
>= 0.2 cm >= 5 cm >= 10 cm >= 25 cm >= 40 cm	DAILY TOTAL SNOWFALL	CALGARY INT'L A	3031093		1991/01/01	2012/07/11
>= 0.2 cm >= 5 cm >= 10 cm >= 25 cm >= 40 cm	DAILY TOTAL SNOWFALL	CALGARY INTL A	3031092		2012/07/12	2020/12/31

Days with Precipitation

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LTE Start Date	Start Date	End Date
>= 0.2 mm >= 1 mm >= 5 mm >= 10 mm >= 25 mm >= 50 mm >= 100 mm	DAILY TOTAL PRECIPITATION	CALGARY INT'L A	3031093		1991/01/01	2012/07/11
	DAILY TOTAL PRECIPITATION	CALGARY INTL A	3031092		2012/07/12	2020/12/31

Days with Snow Depth

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LTE Start Date	Start Date	End Date
>= 1 cm >= 5 cm >= 10 cm >= 20 cm >= 30 cm >= 50 cm >= 100 cm	SNOW ON GROUND	CALGARY INT'L A	3031093		1991/01/01	2012/07/11
	SNOW ON GROUND	CALGARY INTL A	3031092		2012/10/20	2020/12/31

Wind

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LTE Start Date	Start Date	End Date
Days with Winds >= 52 km/h	DAY WITH WIND SPEED >= 28 KNOTS	CALGARY INT'L A	3031093		1991/01/01	2012/07/11
Days with Winds >= 52 km/h	DAY WITH WIND SPEED >= 28 KNOTS	CALGARY INTL A	3031092		2018/11/01	2020/12/31
Days with Winds >= 63 km/h	DAY WITH WIND SPEED >= 34 KNOTS	CALGARY INT'L A	3031093		1991/01/01	2012/07/11
Days with Winds >= 63 km/h	DAY WITH WIND SPEED >= 34 KNOTS	CALGARY INTL A	3031092		2018/11/01	2020/12/31
Speed (km/h) Extreme Speed (km/h) (NPE, LTE)	WIND SPEED	CALGARY INT'L A	3031093	1953/01/01	1991/01/01	2012/07/11
Speed (km/h) Extreme Speed (km/h) (NPE, LTE)	WIND SPEED	CALGARY INTL A	3031092		2012/07/12	2020/12/31
Most Frequent Direction Direction of Extreme Speed (NPE, LTE)	WIND DIRECTION	CALGARY INT'L A	3031093	1953/01/01	1991/01/01	2012/07/11
	WIND DIRECTION	CALGARY INTL A	3031092		2012/07/12	2020/12/31
Days with Gusts >= 90 km/h Extreme Gust Speed (km/h) (NPE, LTE)	SPEED OF EXTREME GUST	CALGARY INT'L A	3031093	1955/01/01	1991/01/01	2012/07/11
	SPEED OF EXTREME GUST	CALGARY INTL A	3031092		2012/07/12	2020/12/31
Direction of Extreme Gust Speed (NPE, LTE)	DIRECTION OF EXTREME GUST	CALGARY INT'L A	3031093	1955/01/01	1991/01/01	2012/07/11
Direction of Extreme Gust Speed (NPE, LTE)	DIRECTION OF EXTREME GUST	CALGARY INTL A	3031092		2012/07/12	2020/12/31

Degree Days

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LTE Start Date	Start Date	End Date
Above 24 °C Above 18 °C Above 15 °C Above 10 °C Above 5 °C Above 0 °C Below 0 °C Below 5 °C Below 10 °C Below 15 °C Below 18 °C	DAILY MEAN TEMPERATURE	CALGARY INT'L A	3031093		1991/01/01	2012/07/11
	DAILY MEAN TEMPERATURE	CALGARY INTL A	3031092		2012/07/12	2020/12/31

Quintiles

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LTE Start Date	Start Date	End Date
Quintile 1 (Lower Bound) Quintile 1 (Upper Bound) Quintile 2 (Upper Bound) Quintile 3 (Upper Bound) Quintile 4 (Upper Bound) Quintile 5 (Upper Bound)	DAILY TOTAL PRECIPITATION	CALGARY INT'L A	3031093		1991/01/01	2012/07/11
	DAILY TOTAL PRECIPITATION	CALGARY INTL A	3031092		2012/07/12	2020/12/31

Humidex

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LTE Start Date	Start Date	End Date
Days with Humidex >= 30 Days with Humidex >= 35 Days with Humidex >= 40 Extreme Humidex (NPE, LTE)	DEW POINT TEMPERATURE	CALGARY INT'L A	3031093	1953/01/01	1991/01/01	2012/07/11
	DEW POINT TEMPERATURE	CALGARY INTL A	3031092		2012/07/12	2020/12/31
	DRY BULB TEMPERATURE	CALGARY INT'L A	3031093	1953/01/01	1991/01/01	2012/07/11
	DRY BULB TEMPERATURE	CALGARY INTL A	3031092		2012/07/12	2020/12/31

Wind Chill

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LTE Start Date	Start Date	End Date
Days with Wind Chill < -20 Days with Wind Chill < -30 Days with Wind Chill < -40 Days with Wind Chill < -50 Extreme Wind Chill (NPE, LTE)	DRY BULB TEMPERATURE	CALGARY INT'L A	3031093	1953/01/01	1991/01/01	2012/07/11
	DRY BULB TEMPERATURE	CALGARY INTL A	3031092		2012/07/12	2020/12/31
	WIND SPEED	CALGARY INT'L A	3031093	1953/01/01	1991/01/01	2012/07/11
	WIND SPEED	CALGARY INTL A	3031092		2012/07/12	2020/12/31

Humidity

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	Start Date	End Date
Average Vapour Pressure (kPa)	DEW POINT TEMPERATURE	CALGARY INT'L A	3031093	1991/01/01	2012/07/11
Average Vapour Pressure (kPa)	DEW POINT TEMPERATURE	CALGARY INTL A	3031092	2012/07/12	2020/12/31
Average Relative Humidity - 0600LST (%) Average Relative Humidity - 1500LST (%)	RELATIVE HUMIDITY	CALGARY INT'L A	3031093	1991/01/01	2012/07/11
	RELATIVE HUMIDITY	CALGARY INTL A	3031092	2012/07/12	2020/12/31

Pressure

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	Start Date	End Date
Average Station Pressure (kPa)	STATION PRESSURE	CALGARY INT'L A	3031093	1991/01/01	2012/07/11
Average Station Pressure (kPa)	STATION PRESSURE	CALGARY INTL A	3031092	2012/07/12	2020/12/31
Average Sea Level Pressure (kPa)	SEA LEVEL PRESSURE	CALGARY INT'L A	3031093	1991/01/01	2012/07/11
Average Sea Level Pressure (kPa)	SEA LEVEL PRESSURE	CALGARY INTL A	3031092	2012/07/12	2020/12/31

Visibility (hours with)

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LTE Start Date	Start Date	End Date
< 1 km 1 to 9 km > 9 km	VISIBILITY	CALGARY INT'L A	3031093		1991/01/01	2012/07/11
< 1 km 1 to 9 km > 9 km	VISIBILITY	CALGARY INTL A	3031092		2012/07/12	2020/12/31

Cloud Amount (hours with)

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LTE Start Date	Start Date	End Date
0 to 2 tenths 3 to 7 tenths 8 to 10 tenths	TOTAL CLOUD AMOUNT	CALGARY INT'L A	3031093		1991/01/01	2012/07/12

Frost-Free

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LT Start Date	Start Date	End Date
Average Date of Last Spring Frost Average Date of First Fall Frost Average Length of Frost-Free Period Probability of last temperature in spring <= 0°C, on or after (Date) (LT) Probability of first temperature in fall <= 0°C, on or before (Date) (LT) Probability of frost-free period equal to or less than indicated period (Days) (LT)	DAILY MINIMUM TEMPERATURE	CALGARY INT'L A	3031093	1886/01/01	1991/01/01	2011/01/31

Snow-Period

1991 to 2020 Canadian Climate Normals (Composite) Station Threads
Normals/Extremes Elements	Climate Element	Station Name	Climate ID	LT Start Date	Start Date	End Date
Average Date of Last Spring Snowfall Average Date of First Fall Snowfall	DAILY TOTAL SNOWFALL	CALGARY INT'L A	3031093		1991/01/01	2012/07/11
	DAILY TOTAL SNOWFALL	CALGARY INTL A	3031092		2012/07/12	2020/12/31

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Date modified:: 2024-06-27

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Canadian Climate Normals 1991-2020 Data

Temperature and Precipitation Graph for 1991 to 2020 Canadian Climate Normals
CALGARY (AIRPORT)

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Composite Station Metadata

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Canadian Climate Normals 1991-2020 Data

Temperature and Precipitation Graph for 1991 to 2020 Canadian Climate NormalsCALGARY (AIRPORT)

Composite Station Metadata

Composite Station Threads

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Temperature and Precipitation Graph for 1991 to 2020 Canadian Climate Normals
CALGARY (AIRPORT)