Canadian Climate Normals 1991-2020 Data

Temperature and Precipitation Graph

Javascript must be enabled for this page to work

Temperature and Precipitation Graph for 1991 to 2020 Canadian Climate Normals
ST. JOHN'S (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 for the location.

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.

ST. JOHN'S (AIRPORT)
NEWFOUNDLAND

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)	-4.2	-4.7	-2.2	1.8	6.3	10.8	16.0	16.5	12.8	7.8	3.4	-1.0	5.3	C
Standard Deviation	1.8	1.9	1.6	1.3	1.4	1.4	1.8	1.1	1.1	1.3	1.2	1.9	2.5	C
Daily Maximum (°C)	-0.7	-1.0	1.2	5.6	11.0	15.7	20.9	20.8	17.0	11.2	6.7	2.1	9.2	C
Daily Minimum (°C)	-7.8	-8.4	-5.7	-1.9	1.6	5.9	11.2	12.1	8.5	4.3	0.0	-4.1	1.3	C

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)	10.6	12.6	11.7	17.6	19.0	22.5	24.9	24.3	22.6	20.0	15.6	13.1
Date (yyyy/dd)	2006/ 15	1984/ 05	1979/ 08	1986/ 24	2020/ 31	1944/ 29	2013/ 25	1994/ 07	1989/ 12	1972/ 01	1962/ 05	1957/ 12
Minimum Daily Mean (°C)	-20.8	-21.3	-18.4	-10.0	-4.2	0.6	4.8	5.6	3.4	-2.0	-8.2	-16.1
Date (yyyy/dd)	1957/ 29	1990/ 18	1986/ 10	1946/ 01	1993/ 10	1974/ 07	1943/ 01	1983/ 29	1963/ 24	1954/ 26	1993/ 25	1984/ 27
Extreme Maximum (°C)	15.7	16.0	18.3	24.1	27.6	29.4	31.5	31.0	29.5	24.6	19.4	17.3
Date (yyyy/dd)	2006/ 15	1996/ 24	1962/ 31	1986/ 24	2020/ 29	1944/ 29	1983/ 06	1996/ 07	2001/ 10	1987/ 04	1950/ 06	2008/ 13
Minimum Daily Maximum (°C)	-18.3	-20.0	-14.6	-6.1	-2.9	1.1	6.6	7.2	5.6	-1.1	-6.5	-12.4
Date (yyyy/dd)	1957/ 29	1975/ 04	1982/ 01	1946/ 01	1993/ 10	1975/ 10	1992/ 02	1968/ 23	1945/ 30	1954/ 26	1992/ 21	1984/ 27
Maximum Daily Minimum (°C)	7.8	9.6	9.7	11.1	15.6	18.2	21.5	20.8	18.9	17.2	12.8	10.0
Date (yyyy/dd)	1951/ 26	1984/ 05	1979/ 08	1958/ 25	1954/ 22	1988/ 28	2013/ 25	1994/ 07	1960/ 14	1972/ 01	1962/ 05	1957/ 12
Extreme Minimum (°C)	-23.3	-23.8	-23.8	-14.8	-6.7	-3.3	-1.1	0.5	-1.1	-5.6	-13.4	-19.7
Date (yyyy/dd)	1957/ 29	1990/ 18	1986/ 10	1978/ 04	1964/ 05	1970/ 01	1976/ 05	1983/ 24	1950/ 23	1946/ 31	1993/ 25	1984/ 27

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)	67.7	55.3	78.9	91.9	93.6	88.1	100.1	99.8	125.8	155.7	132.4	107.7	1,197.0	C
Snowfall (cm)	95.4	77.1	62.0	29.5	4.5	0.0	0.0	0.0	0.0	2.3	22.3	70.3	363.4	C
Precipitation (mm)	153.0	122.8	140.1	121.6	98.1	88.2	100.1	99.8	125.8	158.1	157.4	173.9	1,538.9	C
Average Snow Depth (cm)	21	34	22	7	0	0	0	0	0	0	1	8	8	C
Median Snow Depth (cm)	17	34	18	5	0	0	0	0	0	0	0	6	7	C
Snow Depth at Month-end (cm)	28	29	14	2	0	0	0	0	0	0	3	12	7	C

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)	84.6	67.1	71.4	91.7	81.3	75.2	121.2	80.5	99.4	100.8	97.2	85.1
Date (yyyy/dd)	1942/ 30	1973/ 22	2010/ 05	1951/ 11	1998/ 17	1945/ 24	1946/ 27	1975/ 23	2001/ 19	1942/ 04	2008/ 29	1953/ 26
Extreme Daily Snowfall (cm)	76.2	54.9	50.0	68.4	25.4	13.5	0.0	0.0	0.3	19.8	29.0	49.3
Date (yyyy/dd)	2020/ 17	1959/ 15	2005/ 04	1999/ 05	1956/ 05	1959/ 10	1942/ 01	1942/ 01	1965/ 30	1965/ 29	2011/ 24	1954/ 29
Extreme Daily Precipitation (mm)	84.6	68.3	72.0	91.7	83.1	75.2	121.2	80.5	99.4	100.8	97.2	85.1
Date (yyyy/dd)	1942/ 30	1973/ 22	2000/ 18	1951/ 11	1998/ 17	1945/ 24	1946/ 27	1975/ 23	2001/ 19	1942/ 04	2008/ 29	1953/ 26
Extreme Snow Depth (cm)	144	180	133	105	30	3	0	0	0	9	36	64
Date (yyyy/dd)	2001/ 31	2001/ 09	1987/ 14	2001/ 13	2001/ 02	1968/ 10	1955/ 01	1955/ 01	1955/ 01	1991/ 29	1972/ 25	1955/ 27

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	6.2	7.0	7.7	5.2	1.2	0.0	0.0	0.0	0.0	0.0	0.43	3.1	30.8	A
Thunderstorms	0.0	0.10	0.03	0.07	0.17	0.60	0.93	0.97	0.34	0.37	0.07	0.10	3.8	A
Hail	0.0	0.03	0.03	0.0	0.07	0.0	0.0	0.0	0.03	0.07	0.03	0.0	0.26	A
Fog, Ice Fog, or Freezing Fog	6.1	6.5	8.8	11.2	14.6	14.4	12.8	9.2	7.6	7.7	7.6	7.6	114.0	A
Smoke or Haze	0.0	0.03	0.10	0.10	0.03	0.23	0.97	1.0	0.24	0.07	0.07	0.0	2.8	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	0.0	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
<= -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	1.1	0.83	0.23	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.21	2.4	C
<= 0 °C	18.4	17.0	13.0	2.9	0.08	0.0	0.0	0.0	0.0	0.0	1.7	10.5	63.6	C
> 0 °C	12.6	11.3	18.0	27.1	30.9	30.0	31.0	31.0	30.0	31.0	28.4	20.5	301.7	C
> 10 °C	0.75	0.39	1.1	4.8	16.0	24.9	30.6	31.0	28.6	16.3	7.4	2.4	164.1	C
> 20 °C	0.0	0.0	0.0	0.0	1.7	7.6	20.0	18.4	6.9	0.52	0.0	0.0	55.1	C
> 30 °C	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.04	0.0	0.0	0.0	0.0	0.04	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	0.08	0.0	0.0	0.0	0.0	0.08	C
> 10 °C	0.0	0.0	0.0	0.04	0.67	3.5	19.8	23.6	9.2	1.4	0.17	0.0	58.4	C
> 0 °C	1.2	0.91	1.5	6.6	21.8	29.4	31.0	31.0	30.0	27.5	14.6	5.5	200.9	C
<= 2 °C	30.7	28.0	30.6	28.6	19.5	3.6	0.05	0.0	0.90	8.4	22.4	28.6	201.2	C
<= 0 °C	29.8	27.4	29.6	23.4	9.3	0.61	0.0	0.0	0.0	3.5	15.4	25.5	164.4	C
< -2 °C	27.4	25.0	24.5	13.0	2.4	0.04	0.0	0.0	0.0	0.74	9.0	19.9	122.0	C
< -10 °C	10.5	11.3	5.4	0.30	0.0	0.0	0.0	0.0	0.0	0.0	0.13	3.5	31.0	C
< -20 °C	0.0	0.35	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.35	C
< -30 °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 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	9.7	8.4	10.9	13.6	16.3	14.6	13.5	14.1	15.3	17.8	15.6	12.7	162.3	C
>= 5 mm	4.3	3.4	4.2	5.7	5.9	5.0	5.7	5.5	6.1	7.2	6.9	6.2	66.1	C
>= 10 mm	2.3	1.8	2.6	2.8	3.1	2.9	3.2	3.1	3.8	4.7	4.4	3.7	38.4	C
>= 25 mm	0.58	0.35	0.83	0.65	0.58	0.58	1.0	1.0	1.4	1.9	1.3	1.1	11.3	C
>= 50 mm	0.04	0.09	0.08	0.09	0.08	0.04	0.13	0.08	0.26	0.26	0.32	0.04	1.5	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	18.4	15.2	13.3	7.5	2.0	0.04	0.0	0.0	0.04	0.96	6.6	14.0	78.1	C
>= 5 cm	6.0	5.3	4.0	1.7	0.42	0.0	0.0	0.0	0.0	0.17	1.4	4.7	23.7	C
>= 10 cm	2.9	2.4	1.8	0.83	0.04	0.0	0.0	0.0	0.0	0.09	0.59	2.3	10.9	C
>= 25 cm	0.50	0.30	0.29	0.09	0.0	0.0	0.0	0.0	0.0	0.0	0.05	0.22	1.5	C
>= 40 cm	0.13	0.04	0.04	0.04	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.25	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	21.7	18.8	19.0	17.2	16.9	14.6	13.5	14.1	15.3	18.1	19.0	21.5	209.6	C
>= 1 mm	16.9	14.4	14.3	13.2	12.0	11.0	10.5	10.3	11.4	14.0	15.6	17.9	161.5	C
>= 5 mm	9.0	7.8	7.9	7.4	6.0	5.0	5.7	5.5	6.1	7.3	8.3	10.0	86.1	C
>= 10 mm	5.3	4.3	4.5	3.8	3.4	2.9	3.2	3.1	3.8	4.8	5.2	6.0	50.3	C
>= 25 mm	1.0	0.71	1.3	0.87	0.58	0.58	1.0	1.0	1.4	1.9	1.4	1.6	13.3	C
>= 50 mm	0.13	0.13	0.25	0.13	0.08	0.04	0.13	0.08	0.26	0.26	0.35	0.04	1.9	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	26.4	25.2	26.7	12.1	0.90	0.0	0.0	0.0	0.0	0.29	4.2	18.6	114.3	C
>= 5 cm	21.8	22.7	22.2	7.1	0.48	0.0	0.0	0.0	0.0	0.14	2.0	13.3	89.6	C
>= 10 cm	17.8	20.3	17.7	5.5	0.33	0.0	0.0	0.0	0.0	0.0	0.90	9.3	71.8	C
>= 20 cm	11.2	15.0	12.1	3.0	0.24	0.0	0.0	0.0	0.0	0.0	0.14	4.2	46.0	C
>= 30 cm	7.1	12.0	9.8	2.2	0.05	0.0	0.0	0.0	0.0	0.0	0.0	1.8	33.0	C
>= 50 cm	3.3	8.2	4.9	1.3	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.24	17.8	C
>= 100 cm	0.83	2.0	0.50	0.52	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	3.9	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)	25.4	25.4	24.5	22.0	20.2	19.5	19.1	18.6	20.2	21.4	23.2	24.8	22.0	A
Most Frequent Direction	W	W	W	W	W	W	W	W	W	W	W	W	W	A
Days with Winds >= 52 km/h	8.1	6.7	6.3	3.7	1.1	0.90	0.44	0.67	2.2	2.7	5.5	7.0	45.2	D
Days with Winds >= 63 km/h	3.4	3.1	3.3	1.2	0.10	0.10	0.0	0.19	0.65	0.71	2.3	2.3	17.3	D

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)	120	137	121	93	101	74	69	84	97	103	105	97
Date (yyyy/dd)	1977/ 20	1959/ 16	1956/ 15	1960/ 10	1975/ 02	1976/ 13	2011/ 10	1953/ 06	1955/ 21	1955/ 24	1955/ 27	1954/ 10
Direction of Extreme Speed	SW	N	NW	SW	N	NW	W	W	S	W	W	W
Extreme Gust Speed (km/h)	167	193	193	159	146	108	107	113	153	153	161	153
Date (yyyy/dd)	1977/ 20	1964/ 09	1956/ 15	1960/ 10	1975/ 01	1959/ 11	1977/ 23	1955/ 22	1955/ 21	1955/ 15	1955/ 27	1963/ 20
Direction of Extreme Gust Speed	W	SW	NW	SW	N	E	S	W	S	NW	W	S

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	0.1	2.4	18.7	17.8	3.0	0.2	0.0	0.0	42.2	C
Above 15 °C	0.0	0.0	0.0	0.0	1.5	12.8	64.2	65.3	16.4	1.5	0.0	0.0	161.6	C
Above 10 °C	0.0	0.1	0.1	0.5	13.6	65.0	190.6	197.4	92.0	19.4	3.0	0.1	581.8	C
Above 5 °C	1.3	0.6	1.7	9.0	65.7	180.0	343.0	351.5	229.2	95.3	27.7	5.1	1309.9	C
Above 0 °C	12.3	10.2	20.5	69.9	194.1	328.1	498.0	506.5	379.1	238.0	111.1	38.7	2406.4	C
Below 0 °C	143.5	143.6	91.6	17.9	0.6	0.0	0.0	0.0	0.0	0.1	11.9	70.5	479.7	C
Below 5 °C	287.5	275.4	227.7	107.0	27.2	1.9	0.0	0.0	0.0	12.4	78.5	191.9	1209.5	C
Below 10 °C	441.3	416.1	381.1	248.6	130.1	36.9	2.6	1.0	12.8	91.5	203.9	341.9	2307.7	C
Below 15 °C	596.2	557.3	536.1	398.1	273.0	134.7	31.2	23.8	87.2	228.6	350.8	496.8	3713.8	C
Below 18 °C	689.2	642.1	629.1	488.1	364.6	214.3	78.7	69.3	163.9	320.3	440.8	589.8	4690.2	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)	68.5	62.0	59.2	15.6	34.6	39.1	49.6	34.1	37.2	34.6	55.0	92.2
Quintile 1 (Upper Bound)	113.4	90.0	103.8	75.1	67.9	60.5	64.5	61.8	69.8	113.8	114.8	128.6
Quintile 2 (Upper Bound)	147.4	109.5	126.1	93.6	79.6	77.5	80.2	86.3	100.5	133.4	130.7	149.6
Quintile 3 (Upper Bound)	155.4	125.2	145.0	103.9	95.8	101.8	103.4	108.8	118.0	164.2	153.3	164.4
Quintile 4 (Upper Bound)	188.9	153.8	168.5	139.4	117.5	114.7	130.2	136.5	181.9	187.5	218.9	225.4
Quintile 5 (Upper Bound)	276.9	193.5	251.6	297.0	164.4	185.7	180.4	177.4	263.8	268.6	288.3	326.9

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	0.89	4.8	3.9	0.82	0.04	0.0	0.0	10.5	A
Days with Humidex >= 35	0.0	0.0	0.0	0.0	0.0	0.0	0.43	0.32	0.04	0.0	0.0	0.0	0.79	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 (Long-Term)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Extreme Humidex	19.2	17.3	17.2	26.1	30.3	34.8	38.7	37.7	35.8	30.4	24.1	22.0
Date (yyyy/dd)	2006/ 15	1996/ 24	1968/ 24	1986/ 23	2020/ 29	1957/ 30	2014/ 30	1984/ 18	2001/ 10	2020/ 01	2016/ 17	2017/ 10

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	6.8	7.0	2.8	0.19	0.0	0.0	0.0	0.0	0.0	0.0	0.04	1.9	18.8	A
Days with Wind Chill < -30	0.19	0.39	0.15	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.73	A
Days with Wind Chill < -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
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 (Long-Term)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Extreme Wind Chill	-35.7	-40.3	-40.3	-21.4	-14.2	-8.4	-3.4	0.0	-4.4	-11.8	-24.6	-34.3
Date (yyyy/dd)	1957/ 29	1990/ 03	1986/ 10	1994/ 03	1993/ 11	2018/ 04	1976/ 06	1953/ 01	1986/ 30	1954/ 26	1993/ 25	1984/ 27

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)	0.4	0.4	0.5	0.6	0.8	1.1	1.5	1.5	1.2	0.9	0.7	0.5	0.8	A
Average Relative Humidity - 0600LST (%)	85.1	83.8	85.7	86.8	86.3	86.9	87.8	89.4	90.1	89.2	86.4	86.2	87.0	A
Average Relative Humidity - 1500LST (%)	80.8	77.4	76.2	74.5	71.1	71.3	70.4	71.6	73.0	77.0	79.6	82.6	75.4	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)	99.1	99.2	99.4	99.6	99.7	99.7	99.8	99.8	99.9	99.7	99.7	99.3	99.6	A
Average Sea Level Pressure (kPa)	100.9	100.9	101.2	101.3	101.5	101.4	101.5	101.5	101.6	101.4	101.4	101.0	101.3	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	52.1	61.3	74.5	101.2	110.0	89.6	63.9	45.2	38.2	45.5	55.1	64.6	801.1	A
1 to 9 km	141.4	128.8	136.7	115.6	106.0	96.5	96.1	91.3	83.2	95.9	106.9	133.8	1332.1	A
> 9 km	549.9	488.3	532.2	503.0	527.8	533.8	583.3	606.5	597.7	602.0	557.5	545.0	6627.0	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	78.1	94.1	108.9	114.2	108.8	99.1	101.9	119.7	148.0	106.3	76.1	64.9	1220.0	D
3 to 7 tenths	127.1	118.3	102.6	99.1	108.3	114.3	152.4	154.4	137.5	129.7	122.5	116.2	1482.3	D
8 to 10 tenths	538.8	467.1	532.5	506.8	526.9	506.6	489.7	469.9	434.5	508.1	521.4	562.9	6065.1	D

Frost-Free

1991 to 2020 Canadian Climate Normals Data
Frost-Free
	Date/Days	Code
Average Date of Last Spring Frost	May 28	C
Average Date of First Fall Frost	Oct 18	C
Average Length of Frost-Free Period	142 Days	C

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 16	Jun 09	Jun 06	Jun 01	May 26	May 23	May 18
Probability of first temperature in fall <= 0°C, on or before (Date)	Sep 28	Oct 07	Oct 09	Oct 15	Oct 18	Oct 21	Oct 26
Probability of frost-free period equal to or less than indicated period (Days)	112	123	126	137	142	146	151

Snow-Period

1991 to 2020 Canadian Climate Normals Data
Snow-Period
	Date	Code
Average Date of Last Spring Snowfall	May 13	A
Average Date of First Fall Snowfall	Oct 29	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

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.

ST. JOHN'S (AIRPORT)
NEWFOUNDLAND

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	9728	89.3
Standard Deviation	1991	2020	30	6	9728	89.3
Daily Maximum (°C)	1991	2020	30	6	9730	89.3
Daily Minimum (°C)	1991	2020	30	6	9730	89.3

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)	1942	2020			28296	98.3
Minimum Daily Mean (°C)	1942	2020			28296	98.3
Extreme Maximum (°C)	1942	2020			28299	98.3
Minimum Daily Maximum (°C)	1942	2020			28299	98.3
Maximum Daily Minimum (°C)	1942	2020			28300	98.3
Extreme Minimum (°C)	1942	2020			28300	98.3

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	25	7	8557	78.5
Snowfall (cm)	1991	2020	25	7	8557	78.5
Precipitation (mm)	1991	2020	25	7	8646	79.3
Average Snow Depth (cm)	1991	2020	25	8	7965	73.1
Median Snow Depth (cm)	1991	2020	25	8	7965	73.1
Snow Depth at Month-end (cm)	1991	2020	29	6	285	79.6

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)	1942	2020			28272	98.2
Extreme Daily Snowfall (cm)	1942	2020			28289	98.2
Extreme Daily Precipitation (mm)	1942	2020			28304	98.3
Extreme Snow Depth (cm)	1955	2020			21704	90.3

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	1	10406	95.5
Thunderstorms	1991	2020	30	1	10406	95.5
Hail	1991	2020	30	1	10406	95.5
Fog, Ice Fog, or Freezing Fog	1991	2020	30	1	10406	95.5
Smoke or Haze	1991	2020	30	1	10406	95.5

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	25	7	8403	77.1
<= -20 °C	1991	2020	25	7	8403	77.1
<= -10 °C	1991	2020	25	7	8403	77.1
<= 0 °C	1991	2020	25	7	8403	77.1
> 0 °C	1991	2020	25	7	8403	77.1
> 10 °C	1991	2020	25	7	8403	77.1
> 20 °C	1991	2020	25	7	8403	77.1
> 30 °C	1991	2020	25	7	8403	77.1
> 35 °C	1991	2020	25	7	8403	77.1
> 40 °C	1991	2020	25	7	8403	77.1

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	25	7	8403	77.1
> 10 °C	1991	2020	25	7	8403	77.1
> 0 °C	1991	2020	25	7	8403	77.1
<= 2 °C	1991	2020	25	7	8403	77.1
<= 0 °C	1991	2020	25	7	8403	77.1
< -2 °C	1991	2020	25	7	8403	77.1
< -10 °C	1991	2020	25	7	8403	77.1
< -20 °C	1991	2020	25	7	8403	77.1
< -30 °C	1991	2020	25	7	8403	77.1
< -40 °C	1991	2020	25	7	8403	77.1

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	25	7	8557	78.5
>= 5 mm	1991	2020	25	7	8557	78.5
>= 10 mm	1991	2020	25	7	8557	78.5
>= 25 mm	1991	2020	25	7	8557	78.5
>= 50 mm	1991	2020	25	7	8557	78.5
>= 100 mm	1991	2020	25	7	8557	78.5

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	25	7	8557	78.5
>= 5 cm	1991	2020	25	7	8557	78.5
>= 10 cm	1991	2020	25	7	8557	78.5
>= 25 cm	1991	2020	25	7	8557	78.5
>= 40 cm	1991	2020	25	7	8557	78.5

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	7	8646	79.3
>= 1 mm	1991	2020	25	7	8646	79.3
>= 5 mm	1991	2020	25	7	8646	79.3
>= 10 mm	1991	2020	25	7	8646	79.3
>= 25 mm	1991	2020	25	7	8646	79.3
>= 50 mm	1991	2020	25	7	8646	79.3
>= 100 mm	1991	2020	25	7	8646	79.3

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	7853	72.1
>= 5 cm	1991	2020	24	6	7853	72.1
>= 10 cm	1991	2020	24	6	7853	72.1
>= 20 cm	1991	2020	24	6	7853	72.1
>= 30 cm	1991	2020	24	6	7853	72.1
>= 50 cm	1991	2020	24	6	7853	72.1
>= 100 cm	1991	2020	24	6	7853	72.1

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	28	3	242320	99
Most Frequent Direction	1991	2020	28	3	242284	99.9
Days with Winds >= 52 km/h	1991	2020	23	7	7607	69.8
Days with Winds >= 63 km/h	1991	2020	23	7	7607	69.8

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			576552	99.8
Extreme Gust Speed (km/h)	1955	2020			23340	97.1

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	25	7	8403	77.1
Above 18 °C	1991	2020	25	7	8403	77.1
Above 15 °C	1991	2020	25	7	8403	77.1
Above 10 °C	1991	2020	25	7	8403	77.1
Above 5 °C	1991	2020	25	7	8403	77.1
Above 0 °C	1991	2020	25	7	8403	77.1
Below 0 °C	1991	2020	25	7	8403	77.1
Below 5 °C	1991	2020	25	7	8403	77.1
Below 10 °C	1991	2020	25	7	8403	77.1
Below 15 °C	1991	2020	25	7	8403	77.1
Below 18 °C	1991	2020	25	7	8403	77.1

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	28	3	242993	99.3
Days with Humidex >= 35	1991	2020	28	3	242993	99.3
Days with Humidex >= 40	1991	2020	28	3	242993	99.3

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			576759	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	28	3	242308	99
Days with Wind Chill < -30	1991	2020	28	3	242308	99
Days with Wind Chill < -40	1991	2020	28	3	242308	99
Days with Wind Chill < -50	1991	2020	28	3	242308	99

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			576533	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	28	3	243005	99.3
Average Relative Humidity - 0600LST (%)	1991	2020	28	3	10125	99.3
Average Relative Humidity - 1500LST (%)	1991	2020	28	3	10115	99.2

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	28	3	242830	99.2
Average Sea Level Pressure (kPa)	1991	2020	28	3	242769	99.2

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	28	3	243077	97.3
1 to 9 km	1991	2020	28	3	243077	97.3
> 9 km	1991	2020	28	3	243077	97.3

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	19	5	149112	60.9
3 to 7 tenths	1991	2012	19	5	149112	60.9
8 to 10 tenths	1991	2012	19	5	149112	60.9

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	2010	20	0	20	100.0
Average Date of First Fall Frost	1991	2010	20	0	20	100.0
Average Length of Frost-Free Period	1991	2010	20	0	20	100.0
Probability of last temperature in spring <= 0°C, on or after (Date)
10 %	1942	2010			67	97.1
25 %	1942	2010			67	97.1
33 %	1942	2010			67	97.1
50 %	1942	2010			67	97.1
66 %	1942	2010			67	97.1
75 %	1942	2010			67	97.1
90 %	1942	2010			67	97.1
Probability of first temperature in fall <= 0°C, on or before (Date)
10 %	1942	2010			67	97.1
25 %	1942	2010			67	97.1
33 %	1942	2010			67	97.1
50 %	1942	2010			67	97.1
66 %	1942	2010			67	97.1
75 %	1942	2010			67	97.1
90 %	1942	2010			67	97.1
Probability of frost-free period equal to or less than indicated period (Days)
10 %	1942	2010			67	97.1
25 %	1942	2010			67	97.1
33 %	1942	2010			67	97.1
50 %	1942	2010			67	97.1
66 %	1942	2010			67	97.1
75 %	1942	2010			67	97.1
90 %	1942	2010			67	97.1

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.

ST. JOHN'S (AIRPORT)
NEWFOUNDLAND

Related Data

Calculation Information Normals Data Element Analytics

Download Data

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: ST. JOHN'S (AIRPORT)

Station Name	Climate ID	WMO ID	TC ID	Latitude	Longitude	Elevation (m)
ST. JOHN'S INTL A	8403505	71801	YYT	47°37'07.000" N	52°45'09.000" W	140.5
ST JOHN'S A	8403506	71801	YYT	47°37'20.000" N	52°44'34.000" W	140.5

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. For 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.

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

Composite Station Name: ST. JOHN'S (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) (LTE) Minimum Daily Mean (°C) (LTE)	DAILY MEAN TEMPERATURE	ST JOHN'S A	8403506	1942/01/01	1991/01/01	2012/03/19
	DAILY MEAN TEMPERATURE	ST. JOHN'S INTL A	8403505		2012/03/20	2020/12/31
Daily Maximum (°C) Extreme Maximum (°C) (LTE) Minimum Daily Maximum (°C) (LTE)	DAILY MAXIMUM TEMPERATURE	ST JOHN'S A	8403506	1942/01/01	1991/01/01	2012/03/19
	DAILY MAXIMUM TEMPERATURE	ST. JOHN'S INTL A	8403505		2012/03/20	2020/12/31
Daily Minimum (°C) Maximum Daily Minimum (°C) (LTE) Extreme Minimum (°C) (LTE)	DAILY MINIMUM TEMPERATURE	ST JOHN'S A	8403506	1942/01/01	1991/01/01	2012/03/19
	DAILY MINIMUM TEMPERATURE	ST. JOHN'S INTL A	8403505		2012/03/20	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) (LTE)	DAILY TOTAL RAINFALL	ST JOHN'S A	8403506	1942/01/01	1991/01/01	2012/03/19
Rainfall (mm) Extreme Daily Rainfall (mm) (LTE)	DAILY TOTAL RAINFALL	ST. JOHN'S INTL A	8403505		2012/03/20	2020/12/31
Snowfall (cm) Extreme Daily Snowfall (cm) (LTE)	DAILY TOTAL SNOWFALL	ST JOHN'S A	8403506	1942/01/01	1991/01/01	2012/03/19
Snowfall (cm) Extreme Daily Snowfall (cm) (LTE)	DAILY TOTAL SNOWFALL	ST. JOHN'S INTL A	8403505		2012/03/20	2020/12/31
Precipitation (mm) Extreme Daily Precipitation (mm) (LTE)	DAILY TOTAL PRECIPITATION	ST JOHN'S A	8403506	1942/01/01	1991/01/01	2012/03/19
Precipitation (mm) Extreme Daily Precipitation (mm) (LTE)	DAILY TOTAL PRECIPITATION	ST. JOHN'S INTL A	8403505		2012/03/20	2020/12/31
Average Snow Depth (cm) Median Snow Depth (cm) Snow Depth at Month-end (cm) Extreme Snow Depth (cm) (LTE)	SNOW ON GROUND	ST JOHN'S A	8403506	1955/01/01	1991/01/01	2012/03/19
	SNOW ON GROUND	ST. JOHN'S INTL A	8403505		2012/03/20	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	ST JOHN'S A	8403506	1991/01/01	2012/03/19
Freezing Rain or Freezing Drizzle	DAY WITH FREEZING RAIN	ST. JOHN'S INTL A	8403505	2012/03/20	2020/12/31
Thunderstorms	DAY WITH THUNDERSTORMS	ST JOHN'S A	8403506	1991/01/01	2012/03/19
Thunderstorms	DAY WITH THUNDERSTORMS	ST. JOHN'S INTL A	8403505	2012/03/20	2020/12/31
Hail	DAY WITH HAIL	ST JOHN'S A	8403506	1991/01/01	2012/03/19
Hail	DAY WITH HAIL	ST. JOHN'S INTL A	8403505	2012/03/20	2020/12/31
Fog, Ice Fog, or Freezing Fog	DAY WITH FOG OR ICE FOG	ST JOHN'S A	8403506	1991/01/01	2012/03/19
Fog, Ice Fog, or Freezing Fog	DAY WITH FOG OR ICE FOG	ST. JOHN'S INTL A	8403505	2012/03/20	2020/12/31
Smoke or Haze	DAY WITH SMOKE/HAZE	ST JOHN'S A	8403506	1991/01/01	2012/03/19
Smoke or Haze	DAY WITH SMOKE/HAZE	ST. JOHN'S INTL A	8403505	2012/03/20	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
<= 0 °C > 0 °C > 10 °C > 20 °C > 30 °C > 35 °C	DAILY MAXIMUM TEMPERATURE	ST JOHN'S A	8403506		1991/01/01	2012/03/19
<= 0 °C > 0 °C > 10 °C > 20 °C > 30 °C > 35 °C	DAILY MAXIMUM TEMPERATURE	ST. JOHN'S INTL A	8403505		2012/03/20	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
> 0 °C <= 2 °C <= 0 °C < -2 °C < -10 °C < -20 °C < -30 °C	DAILY MINIMUM TEMPERATURE	ST JOHN'S A	8403506		1991/01/01	2012/03/19
> 0 °C <= 2 °C <= 0 °C < -2 °C < -10 °C < -20 °C < -30 °C	DAILY MINIMUM TEMPERATURE	ST. JOHN'S INTL A	8403505		2012/03/20	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	DAILY TOTAL RAINFALL	ST JOHN'S A	8403506		1991/01/01	2012/03/19
>= 0.2 mm >= 5 mm >= 10 mm >= 25 mm	DAILY TOTAL RAINFALL	ST. JOHN'S INTL A	8403505		2012/03/20	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	DAILY TOTAL SNOWFALL	ST JOHN'S A	8403506		1991/01/01	2012/03/19
>= 0.2 cm >= 5 cm >= 10 cm >= 25 cm	DAILY TOTAL SNOWFALL	ST. JOHN'S INTL A	8403505		2012/03/20	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 >= 5 mm >= 10 mm >= 25 mm	DAILY TOTAL PRECIPITATION	ST JOHN'S A	8403506		1991/01/01	2012/03/19
>= 0.2 mm >= 5 mm >= 10 mm >= 25 mm	DAILY TOTAL PRECIPITATION	ST. JOHN'S INTL A	8403505		2012/03/20	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 >= 50 cm >= 100 cm	SNOW ON GROUND	ST JOHN'S A	8403506		1991/01/01	2012/03/19
>= 1 cm >= 5 cm >= 10 cm >= 20 cm >= 50 cm >= 100 cm	SNOW ON GROUND	ST. JOHN'S INTL A	8403505		2012/03/20	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	ST JOHN'S A	8403506		1991/01/01	2012/03/19
Days with Winds >= 52 km/h	DAY WITH WIND SPEED >= 28 KNOTS	ST. JOHN'S INTL A	8403505		2012/03/20	2020/12/31
Days with Winds >= 63 km/h	DAY WITH WIND SPEED >= 34 KNOTS	ST JOHN'S A	8403506		1991/01/01	2012/03/19
Days with Winds >= 63 km/h	DAY WITH WIND SPEED >= 34 KNOTS	ST. JOHN'S INTL A	8403505		2012/03/20	2020/12/31
Speed (km/h) Extreme Speed (km/h) (LTE)	WIND SPEED	ST JOHN'S A	8403506	1953/01/01	1991/01/01	2012/03/20
Speed (km/h) Extreme Speed (km/h) (LTE)	WIND SPEED	ST. JOHN'S INTL A	8403505		2012/03/21	2020/12/31
Most Frequent Direction Direction of Extreme Speed (LTE)	WIND DIRECTION	ST JOHN'S A	8403506	1953/01/01	1991/01/01	2012/03/20
Most Frequent Direction Direction of Extreme Speed (LTE)	WIND DIRECTION	ST. JOHN'S INTL A	8403505		2012/03/21	2020/12/31
Extreme Gust Speed (km/h) (LTE)	SPEED OF EXTREME GUST	ST JOHN'S A	8403506	1955/01/01	1991/01/01	2012/03/19
Extreme Gust Speed (km/h) (LTE)	SPEED OF EXTREME GUST	ST. JOHN'S INTL A	8403505		2012/03/20	2020/12/31
Direction of Extreme Gust Speed (LTE)	DIRECTION OF EXTREME GUST	ST JOHN'S A	8403506	1955/01/01	1991/01/01	2012/03/19
Direction of Extreme Gust Speed (LTE)	DIRECTION OF EXTREME GUST	ST. JOHN'S INTL A	8403505		2012/03/20	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	ST JOHN'S A	8403506		1991/01/01	2012/03/19
	DAILY MEAN TEMPERATURE	ST. JOHN'S INTL A	8403505		2012/03/20	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	ST JOHN'S A	8403506		1991/01/01	2012/03/19
	DAILY TOTAL PRECIPITATION	ST. JOHN'S INTL A	8403505		2012/03/20	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 (LTE)	DEW POINT TEMPERATURE	ST JOHN'S A	8403506	1953/01/01	1991/01/01	2012/03/20
	DEW POINT TEMPERATURE	ST. JOHN'S INTL A	8403505		2012/03/21	2020/12/31
	DRY BULB TEMPERATURE	ST JOHN'S A	8403506	1953/01/01	1991/01/01	2012/03/20
	DRY BULB TEMPERATURE	ST. JOHN'S INTL A	8403505		2012/03/21	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 Extreme Wind Chill (LTE)	DRY BULB TEMPERATURE	ST JOHN'S A	8403506	1953/01/01	1991/01/01	2012/03/20
	DRY BULB TEMPERATURE	ST. JOHN'S INTL A	8403505		2012/03/21	2020/12/31
	WIND SPEED	ST JOHN'S A	8403506	1953/01/01	1991/01/01	2012/03/20
	WIND SPEED	ST. JOHN'S INTL A	8403505		2012/03/21	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	ST JOHN'S A	8403506	1991/01/01	2012/03/20
Average Vapour Pressure (kPa)	DEW POINT TEMPERATURE	ST. JOHN'S INTL A	8403505	2012/03/21	2020/12/31
Average Relative Humidity - 0600LST (%) Average Relative Humidity - 1500LST (%)	RELATIVE HUMIDITY	ST JOHN'S A	8403506	1991/01/01	2012/03/20
	RELATIVE HUMIDITY	ST. JOHN'S INTL A	8403505	2012/03/21	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	ST JOHN'S A	8403506	1991/01/01	2012/03/20
Average Station Pressure (kPa)	STATION PRESSURE	ST. JOHN'S INTL A	8403505	2012/03/21	2020/12/31
Average Sea Level Pressure (kPa)	SEA LEVEL PRESSURE	ST JOHN'S A	8403506	1991/01/01	2012/03/20
Average Sea Level Pressure (kPa)	SEA LEVEL PRESSURE	ST. JOHN'S INTL A	8403505	2012/03/21	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	ST JOHN'S A	8403506		1991/01/01	2012/03/20
< 1 km 1 to 9 km > 9 km	VISIBILITY	ST. JOHN'S INTL A	8403505		2012/03/21	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	ST JOHN'S A	8403506		1991/01/01	2012/03/20
0 to 2 tenths 3 to 7 tenths 8 to 10 tenths	TOTAL CLOUD AMOUNT	ST. JOHN'S INTL A	8403505		2012/03/21	2020/12/31

Frost-Free

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
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) (LTE) Probability of first temperature in fall <= 0°C, on or before (Date) (LTE) Probability of frost-free period equal to or less than indicated period (Days) (LTE)	DAILY MINIMUM TEMPERATURE	ST JOHN'S A	8403506	1942/01/01	1991/01/01	2010/01/31

Snow-Period

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
Average Date of Last Spring Snowfall Average Date of First Fall Snowfall	DAILY TOTAL SNOWFALL	ST JOHN'S A	8403506		1991/01/01	2012/03/19
	DAILY TOTAL SNOWFALL	ST. JOHN'S INTL A	8403505		2012/03/20	2020/12/31

Page details

Feedback about this web site

Date modified:: 2024-03-27

Language selection

Search

Canadian Climate Normals 1991-2020 Data

Temperature and Precipitation Graph for 1991 to 2020 Canadian Climate Normals
ST. JOHN'S (AIRPORT)

Legend

Related Data

Download Data

Composite Station Metadata

Composite Station Threads

Page details

Canadian Climate Normals 1991-2020 Data

Temperature and Precipitation Graph for 1991 to 2020 Canadian Climate NormalsST. JOHN'S (AIRPORT)

Composite Station Metadata

Composite Station Threads

Page details

Temperature and Precipitation Graph for 1991 to 2020 Canadian Climate Normals
ST. JOHN'S (AIRPORT)