Canadian Climate Normals 1981-2010 Station Data

Temperature and Precipitation Graph

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Temperature and Precipitation Graph for 1981 to 2010 Canadian Climate Normals
GRANDE PRAIRIE A

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.

GRANDE PRAIRIE A *
ALBERTA

55°10'47.000" N

118°53'06.000" W

669.00 m

3072920

71940

YQU

* This station meets WMO standards for temperature and precipitation.

Temperature

1981 to 2010 Canadian Climate Normals station data
Temperature
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Daily Average (°C)	-13.6	-10.6	-4.9	4.1	10.2	14.3	16.2	15.1	10.2	3.6	-6.6	-11.3	2.2	A
Standard Deviation	5.5	3.9	4.2	2.2	1.7	0.9	1.0	1.5	1.6	1.6	4.3	5.1	1.1	A
Daily Maximum (°C)	-8.0	-4.8	0.6	10.1	16.8	20.5	22.6	21.7	16.6	9.4	-1.8	-6.0	8.1	A
Daily Minimum (°C)	-19.0	-16.4	-10.3	-2.0	3.6	8.1	9.8	8.3	3.8	-2.1	-11.4	-16.7	-3.7	A
Extreme Maximum (°C)	15.2	11.8	16.1	29.2	31.3	33.3	35.6	34.5	31.1	28.9	22.2	13.3
Date (yyyy/dd)	2003/ 06	1992/ 27	1966/ 29	1977/ 25	1985/ 17	1970/ 03	2006/ 22	1981/ 09	1944/ 12	1943/ 02	1949/ 02	1943/ 10
Extreme Minimum (°C)	-52.2	-48.3	-42.8	-35.6	-8.7	-2.2	0.6	-2.8	-10.6	-31.7	-40.6	-47.2
Date (yyyy/dd)	1950/ 02	1947/ 01	1951/ 07	1954/ 02	2002/ 03	1951/ 01	1949/ 02	1947/ 20	1972/ 23	1951/ 25	1963/ 20	1990/ 20

Precipitation

1981 to 2010 Canadian Climate Normals station data
Precipitation
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Rainfall (mm)	2.4	0.8	1.4	10.4	38.1	75.9	76.1	55.7	41.3	15.4	4.2	0.7	322.4	A
Snowfall (cm)	35.0	20.8	20.3	11.0	3.4	0.0	0.0	0.1	1.7	12.0	26.5	23.6	154.3	A
Precipitation (mm)	29.9	16.4	16.9	19.8	41.0	75.9	76.1	55.8	43.0	26.0	25.4	18.9	445.1	A
Average Snow Depth (cm)	24	27	21	5	0	0	0	0	0	1	7	15	8	C
Median Snow Depth (cm)	24	27	20	4	0	0	0	0	0	0	7	15	8	C
Snow Depth at Month-end (cm)	29	25	13	0	0	0	0	0	0	3	12	17	8	C
Extreme Daily Rainfall (mm)	6.0	4.6	10.9	17.3	32.7	77.5	70.4	90.0	39.1	38.9	17.0	7.6
Date (yyyy/dd)	2003/ 26	1963/ 26	1944/ 16	1962/ 28	1984/ 16	1965/ 27	2007/ 17	1994/ 05	1991/ 01	1943/ 04	1957/ 22	1950/ 24
Extreme Daily Snowfall (cm)	22.6	21.3	22.1	15.7	17.5	0.0	0.0	19.3	20.0	36.3	21.3	23.4
Date (yyyy/dd)	1982/ 09	1972/ 18	1966/ 16	1966/ 09	1960/ 21	1942/ 01	1942/ 01	1973/ 17	2004/ 08	1957/ 04	1965/ 22	1947/ 13
Extreme Daily Precipitation (mm)	16.8	15.2	18.0	19.0	32.7	77.5	70.4	90.0	39.1	38.9	23.6	23.4
Date (yyyy/dd)	1945/ 05	1948/ 14	1966/ 16	1986/ 29	1984/ 16	1965/ 27	2007/ 17	1994/ 05	1991/ 01	1943/ 04	1957/ 22	1947/ 13
Extreme Snow Depth (cm)	84	86	96	69	14	2	0	0	5	56	52	63
Date (yyyy/dd)	1982/ 30	1982/ 01	2007/ 13	1974/ 02	2002/ 06	1990/ 23	1955/ 01	1955/ 01	1971/ 29	1957/ 06	1990/ 30	1990/ 23

Days with Maximum Temperature

1981 to 2010 Canadian Climate Normals station data
Days with Maximum Temperature
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
<= 0 °C	22.7	18.2	11.7	1.8	0.19	0.0	0.0	0.0	0.0	2.6	15.2	21.2	93.7	A
> 0 °C	8.3	10.0	19.3	28.2	30.8	30.0	31.0	31.0	30.0	28.4	14.8	9.9	271.6	A
> 10 °C	0.15	0.19	1.9	16.2	27.7	30.0	31.0	30.7	26.4	15.3	1.1	0.15	180.8	A
> 20 °C	0.0	0.0	0.0	1.3	8.6	16.7	23.0	19.5	8.1	1.3	0.0	0.0	78.4	A
> 30 °C	0.0	0.0	0.0	0.0	0.07	0.15	1.1	1.4	0.19	0.0	0.0	0.0	2.9	A
> 35 °C	0.0	0.0	0.0	0.0	0.0	0.0	0.04	0.0	0.0	0.0	0.0	0.0	0.04	A

Days with Minimum Temperature

1981 to 2010 Canadian Climate Normals station data
Days with Minimum Temperature
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
> 0 °C	0.22	0.44	1.7	10.0	25.4	30.0	31.0	30.8	25.4	10.5	1.0	0.88	167.3	A
<= 2 °C	31.0	28.1	30.8	25.7	11.1	0.59	0.07	0.93	9.7	25.4	29.6	30.5	223.3	A
<= 0 °C	30.8	27.8	29.3	20.0	5.6	0.0	0.0	0.22	4.6	20.5	29.0	30.1	197.9	A
< -2 °C	30.2	27.2	26.0	12.2	2.0	0.0	0.0	0.07	2.0	14.6	27.0	29.2	170.3	A
< -10 °C	24.6	21.3	13.9	1.8	0.0	0.0	0.0	0.0	0.0	1.9	15.4	22.9	101.8	A
< -20 °C	12.9	9.0	4.3	0.33	0.0	0.0	0.0	0.0	0.0	0.33	4.7	10.5	42.0	A
< - 30 °C	4.4	2.1	0.70	0.04	0.0	0.0	0.0	0.0	0.0	0.04	0.70	3.0	11.0	A

Days with Rainfall

1981 to 2010 Canadian Climate Normals station data
Days with Rainfall
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
>= 0.2 mm	1.9	0.81	1.6	4.8	10.0	13.2	13.4	11.8	11.5	7.7	2.8	0.81	80.4	A
>= 5 mm	0.15	0.0	0.0	0.67	2.8	4.6	4.6	3.3	2.4	0.81	0.15	0.0	19.5	A
>= 10 mm	0.0	0.0	0.0	0.07	0.89	2.2	2.0	1.3	0.93	0.07	0.04	0.0	7.5	A
>= 25 mm	0.0	0.0	0.0	0.0	0.07	0.59	0.48	0.22	0.15	0.0	0.0	0.0	1.5	A

Days With Snowfall

1981 to 2010 Canadian Climate Normals station data
Days With Snowfall
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
>= 0.2 cm	10.8	8.4	8.0	3.8	1.1	0.0	0.0	0.04	0.63	4.0	9.3	8.5	54.5	A
>= 5 cm	2.4	1.3	1.0	0.85	0.30	0.0	0.0	0.0	0.04	0.67	1.7	1.6	9.8	A
>= 10 cm	0.59	0.22	0.30	0.15	0.07	0.0	0.0	0.0	0.04	0.11	0.37	0.35	2.2	A
>= 25 cm	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.04	0.0	0.0	0.04	A

Days with Precipitation

1981 to 2010 Canadian Climate Normals station data
Days with Precipitation
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
>= 0.2 mm	11.7	8.5	9.0	7.6	10.5	13.2	13.3	11.8	11.7	10.7	11.3	9.1	128.4	A
>= 5 mm	1.9	0.78	0.70	1.4	3.0	4.6	4.6	3.3	2.5	1.5	1.3	0.92	26.6	A
>= 10 mm	0.44	0.11	0.11	0.26	0.96	2.2	2.0	1.3	1.0	0.19	0.37	0.15	9.1	A
>= 25 mm	0.0	0.0	0.0	0.0	0.07	0.59	0.50	0.22	0.15	0.04	0.0	0.0	1.6	A

Days with Snow Depth

1981 to 2010 Canadian Climate Normals station data
Days with Snow Depth
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
>= 1 cm	29.8	28.0	25.7	7.6	0.71	0.04	0.0	0.0	0.08	3.6	19.6	25.5	140.8	C
>= 5 cm	27.9	26.3	21.2	5.4	0.21	0.0	0.0	0.0	0.0	1.7	13.7	21.2	117.7	C
>= 10 cm	24.1	23.9	18.2	4.2	0.08	0.0	0.0	0.0	0.0	0.71	8.6	15.6	95.6	C
>= 20 cm	15.3	16.3	13.8	3.0	0.0	0.0	0.0	0.0	0.0	0.0	3.4	9.4	61.1	C

Wind

1981 to 2010 Canadian Climate Normals station data
Wind
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Speed (km/h)	8.4	8.8	10.7	12.6	14.0	13.2	12.0	11.1	11.8	11.5	9.2	8.9	11.0	A
Most Frequent Direction	NW	NW	W	W	W	W	W	W	W	W	W	W	W	A
Maximum Hourly Speed (km/h)	80	80	68	71	80	89	83	68	77	74	74	72
Date (yyyy/dd)	1962/ 23	1967/ 02	1956/ 15	1961/ 01	1971/ 14	1960/ 01	2007/ 17	1973/ 28	1966/ 30	1961/ 03	1963/ 28	1970/ 25
Direction of Maximum Hourly Speed	W	W	W	W	W	W	S	SW	W	W	W	W
Maximum Gust Speed (km/h)	121	120	105	109	122	105	108	109	120	111	106	104
Date (yyyy/dd)	1972/ 05	1985/ 14	1971/ 07	1961/ 17	1971/ 14	1960/ 01	1973/ 11	1962/ 20	1980/ 30	1982/ 22	1962/ 24	1979/ 05
Direction of Maximum Gust	W	W	W	W	W	W	W	W	W	SW	W	W

Degree Days

1981 to 2010 Canadian Climate Normals station 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	0.1	0	0	0	0	0	0.1	A
Above 18 °C	0	0	0	0	0.8	3.3	13.5	11.4	0.6	0	0	0	29.7	A
Above 15 °C	0	0	0	0.1	7.3	23.4	55.4	43.9	5.8	0.3	0	0	136.3	A
Above 10 °C	0	0	0	3.8	54.1	131.2	192.7	159.9	51.6	6.3	0.2	0	599.8	A
Above 5 °C	0.2	0.2	1.3	40.1	167.7	279.1	347.3	311.9	161.7	41.5	2.1	0.8	1353.9	A
Above 0 °C	3.9	5.3	27.7	144	316.9	429.1	502.3	466.8	305.7	139.5	16.3	8.4	2365.9	A
Below 0 °C	424.1	304.8	178.2	22.1	1.2	0	0	0	0.1	26.7	215.7	359.4	1532.2	A
Below 5 °C	575.5	440.8	306.9	68.2	7	0	0	0.1	6.1	83.7	351.4	506.8	2346.4	A
Below 10 °C	730.2	581.7	460.6	181.9	48.3	2.1	0.4	3.1	46	203.5	499.5	661	3418.3	A
Below 15 °C	885.2	722.8	615.6	328.2	156.6	44.3	18.1	42.1	150.2	352.5	649.3	816	4780.9	A
Below 18 °C	978.2	807.5	708.6	418.1	243.1	114.2	69.2	102.6	235	445.2	739.3	909	5,770	A

Bright Sunshine

1981 to 2010 Canadian Climate Normals station data
Bright Sunshine
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Extreme Daily	8.1	10.4	11.9	14.3	16.1	17.0	16.4	15.1	13.2	10.1	8.9	7.2
Date (yyyy/dd)	1985/ 29	1988/ 27	1987/ 31	1985/ 29	1986/ 31	1990/ 27	1985/ 02	1981/ 06	1988/ 02	1985/ 01	1987/ 01	1986/ 30

Humidex

1981 to 2010 Canadian Climate Normals station data
Humidex
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Extreme Humidex	14.5	11.1	15.6	28.6	30.8	33.6	40.8	36.6	34.7	27.1	17.2	12.1
Date (yyyy/dd)	2003/ 06	1954/ 02	1966/ 29	1977/ 25	1985/ 17	1969/ 17	1959/ 23	1997/ 06	1988/ 04	1987/ 02	1969/ 02	1999/ 27
Days with Humidex >= 30	0.0	0.0	0.0	0.0	0.1	0.4	2.3	2.8	0.3	0.0	0.0	0.0	5.9	A
Days with Humidex >= 35	0.0	0.0	0.0	0.0	0.0	0.0	0.1	0.1	0.0	0.0	0.0	0.0	0.2	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

Wind Chill

1981 to 2010 Canadian Climate Normals station data
Wind Chill
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Extreme Wind Chill (°C)	-63	-55	-53	-47	-16	-4	0	-3	-15	-34	-56	-56
Date (yyyy/dd)	1953/ 14	1956/ 15	1955/ 04	1954/ 02	2002/ 03	1973/ 01	1953/ 01	1993/ 11	1972/ 27	1991/ 27	1985/ 26	1992/ 29
Days with Wind Chill < -20	17.8	13.8	8.1	0.9	0.0	0.0	0.0	0.0	0.0	0.6	7.8	15.8	64.8	A
Days with Wind Chill < -30	8.8	5.7	2.5	0.1	0.0	0.0	0.0	0.0	0.0	0.1	2.2	7.0	26.3	A
Days with Wind Chill < -40	3.0	1.4	0.3	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.3	1.9	6.9	A

Humidity

1981 to 2010 Canadian Climate Normals station data
Humidity
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Average Vapour Pressure (kPa)	0.2	0.3	0.3	0.5	0.7	1	1.2	1.1	0.8	0.6	0.3	0.2	0.6	A
Average Relative Humidity - 0600LST (%)	75.7	75.9	75.7	73.3	71.2	76.3	82.1	84.8	83.4	80.9	80.6	76	78	A
Average Relative Humidity - 1500LST (%)	71.5	67.9	60.2	43.8	39.7	43.9	47.6	47.4	49.5	54.7	71.4	72.7	55.9	A

Pressure

1981 to 2010 Canadian Climate Normals station data
Pressure
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Average Station Pressure (kPa)	93.4	93.5	93.5	93.5	93.5	93.5	93.6	93.6	93.6	93.4	93.3	93.4	93.5	A
Average Sea Level Pressure (kPa)	101.8	101.8	101.6	101.5	101.4	101.3	101.5	101.5	101.5	101.4	101.5	101.7	101.6	A

Visibility (hours with)

1981 to 2010 Canadian Climate Normals station data
Visibility (hours with)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
< 1 km	17.3	13	6.1	3.1	2.1	1.5	2.9	6.2	9.2	13.5	23.7	13	111.6	C
1 to 9 km	101.5	73	56.8	30	11.3	11.4	11.2	20.3	19.4	40.7	84.5	79.5	539.5	C
> 9 km	625.3	591.4	681.2	686.8	730.6	707.1	729.9	717.5	691.5	689.7	611.8	651.4	8114.3	C

Cloud Amount (hours with)

1981 to 2010 Canadian Climate Normals station data
Cloud Amount (hours with)
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
0 to 2 tenths	159.3	142.7	173.6	162.1	133.7	122.7	150.6	179.2	152.8	157.8	137.6	172	1,844	C
3 to 7 tenths	147.7	147.6	172.3	198.3	213.4	234.5	262.3	227.7	189.5	165.1	141.3	159.4	2258.9	C
8 to 10 tenths	437.1	387.1	398.1	359.6	397	362.8	331.1	337.1	377.7	421.1	441.1	412.7	4662.5	C

Frost-Free

1981 to 2010 Canadian Climate Normals station data
Frost-Free
	Date/Days	Code
Average Date of Last Spring Frost	May 17	A
Average Date of First Fall Frost	Sept 12	A
Average Length of Frost-Free Period	117 Days	A

1981 to 2010 Canadian Climate Normals station data
Frost-Free
Probability of last temperature in spring of 0 °C or lower on or after indicated dates	10%	25%	33%	50%	66%	75%	90%
Date	May 31	May 24	May 22	May 16	May 13	May 12	May 07
Probability of first temperature in fall of 0 °C or lower on or before indicated dates	10%	25%	33%	50%	66%	75%	90%
Date	Aug 25	Sep 05	Sep 06	Sep 13	Sep 17	Sep 19	Sep 27
Probability of frost-free period equal to or less than indicated period (Days)	10%	25%	33%	50%	66%	75%	90%
Days	91	107	111	116	122	125	135

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

Station / Element Metadata

Statistics listed below are provided as a guide to determine the validity of Normals and Extremes calculations. For example, a station with 30 years of record between 1981 and 2010 with no missing years would be a more reliable normal than a 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.

GRANDE PRAIRIE A

Province/Territory

Latitude (dd mm):

55 10 N

Country

CAN

Longitude (ddd mm):

118 53 W

Time Zone

MST

Latitude (decimal degrees):

55.18 N

Climate ID:

3072920

Longitude (decimal degrees):

118.89 W

WMO ID:

71940

Elevation (m):

669

TC ID:

YQU

Temperature

1981 to 2010 Canadian Climate Normals Element Metadata
Temperature
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Daily Average (°C)	1981	2007	27	0	9830	100
Standard Deviation	1981	2007	27	0	9830	100
Daily Maximum (°C)	1981	2007	27	0	9830	100
Daily Minimum (°C)	1981	2007	27	0	9830	100
Extreme Maximum (°C)	1942	2007			23985	100
Extreme Minimum (°C)	1942	2007			23985	100

Precipitation

1981 to 2010 Canadian Climate Normals Element Metadata
Precipitation
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Rainfall (mm)	1981	2007	27	1	9768	99.4
Snowfall (cm)	1981	2007	27	1	9768	99.4
Precipitation (mm)	1981	2007	27	1	9768	99.4
Average Snow Depth (cm)	1981	2007	27	2	9210	98.2
Median Snow Depth (cm)	1981	2007	27	2	9210	98.2
Snow Depth at Month-end (cm)	1981	2007	27	2	307	99.7
Extreme Daily Rainfall (mm)	1942	2007			23966	99.9
Extreme Daily Snowfall (cm)	1942	2007			23966	99.9
Extreme Daily Precipitation (mm)	1942	2007			23964	99.9
Extreme Snow Depth (cm)	1955	2007			18750	99.4

Days with Maximum Temperature

1981 to 2010 Canadian Climate Normals Element Metadata
Days with Maximum Temperature
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
<= 0 °C	1981	2007	27	0	9830	100
> 0 °C	1981	2007	27	0	9830	100
> 10 °C	1981	2007	27	0	9830	100
> 20 °C	1981	2007	27	0	9830	100
> 30 °C	1981	2007	27	0	9830	100
> 35 °C	1981	2007	27	0	9830	100

Days with Minimum Temperature

1981 to 2010 Canadian Climate Normals Element Metadata
Days with Minimum Temperature
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
> 0 °C	1981	2007	27	0	9830	100
<= 2 °C	1981	2007	27	0	9830	100
<= 0 °C	1981	2007	27	0	9830	100
< -2 °C	1981	2007	27	0	9830	100
< -10 °C	1981	2007	27	0	9830	100
< -20 °C	1981	2007	27	0	9830	100
< - 30 °C	1981	2007	27	0	9830	100

Days with Rainfall

1981 to 2010 Canadian Climate Normals Element Metadata
Days with Rainfall
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
>= 0.2 mm	1981	2007	27	0	9830	100
>= 5 mm	1981	2007	27	0	9830	100
>= 10 mm	1981	2007	27	0	9830	100
>= 25 mm	1981	2007	27	0	9830	100

Days With Snowfall

1981 to 2010 Canadian Climate Normals Element Metadata
Days With Snowfall
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
>= 0.2 cm	1981	2007	27	0	9830	100
>= 5 cm	1981	2007	27	0	9830	100
>= 10 cm	1981	2007	27	0	9830	100
>= 25 cm	1981	2007	27	0	9830	100

Days with Precipitation

1981 to 2010 Canadian Climate Normals Element Metadata
Days with Precipitation
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
>= 0.2 mm	1981	2007	27	1	9768	99.4
>= 5 mm	1981	2007	27	1	9768	99.4
>= 10 mm	1981	2007	27	1	9768	99.4
>= 25 mm	1981	2007	27	1	9768	99.4

Days with Snow Depth

1981 to 2010 Canadian Climate Normals Element Metadata
Days with Snow Depth
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
>= 1 cm	1981	2007	27	2	9011	96.1
>= 5 cm	1981	2007	27	2	9011	96.1
>= 10 cm	1981	2007	27	2	9011	96.1
>= 20 cm	1981	2007	27	2	9011	96.1

Wind

1981 to 2010 Canadian Climate Normals Element Metadata
Wind
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Speed (km/h)	1981	2010	30	0	262819	99.9
Most Frequent Direction	1981	2010	30	0	262817	99.9
Maximum Hourly Speed (km/h)	1953	2010			508109	99.9
Maximum Gust Speed (km/h)	1955	2002			14843	98.9

Degree Days

1981 to 2010 Canadian Climate Normals Element Metadata
Degree Days
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Above 24 °C	1981	2007	27	0	9830	100
Above 18 °C	1981	2007	27	0	9830	100
Above 15 °C	1981	2007	27	0	9830	100
Above 10 °C	1981	2007	27	0	9830	100
Above 5 °C	1981	2007	27	0	9830	100
Above 0 °C	1981	2007	27	0	9830	100
Below 0 °C	1981	2007	27	0	9830	100
Below 5 °C	1981	2007	27	0	9830	100
Below 10 °C	1981	2007	27	0	9830	100
Below 15 °C	1981	2007	27	0	9830	100
Below 18 °C	1981	2007	27	0	9830	100

Bright Sunshine

1981 to 2010 Canadian Climate Normals Element Metadata
Bright Sunshine
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Extreme Daily	1979	1995			136514	99.4

Humidex

1981 to 2010 Canadian Climate Normals Element Metadata
Humidex
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Extreme Humidex	1953	2010			507136	99.8
Days with Humidex >= 30	1981	2010	30	0	262762	99.9
Days with Humidex >= 35	1981	2010	30	0	262762	99.9
Days with Humidex >= 40	1981	2010	30	0	262762	99.9

Wind Chill

1981 to 2010 Canadian Climate Normals Element Metadata
Wind Chill
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Extreme Wind Chill (°C)	1953	2010			508101	99.9
Days with Wind Chill < -20	1981	2010	30	0	262811	99.9
Days with Wind Chill < -30	1981	2010	30	0	262811	99.9
Days with Wind Chill < -40	1981	2010	30	0	262811	99.9

Humidity

1981 to 2010 Canadian Climate Normals Element Metadata
Humidity
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Average Vapour Pressure (kPa)	1981	2010	30	0	262762	99.9
Average Relative Humidity - 0600LST (%)	1981	2010	30	0	10948	99.9
Average Relative Humidity - 1500LST (%)	1981	2010	30	0	10953	100

Pressure

1981 to 2010 Canadian Climate Normals Element Metadata
Pressure
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Average Station Pressure (kPa)	1981	2010	30	0	262815	99.9
Average Sea Level Pressure (kPa)	1981	2010	30	0	262810	99.9

Visibility (hours with)

1981 to 2010 Canadian Climate Normals Element Metadata
Visibility (hours with)
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
< 1 km	1981	2010	28	6	225528	85.8
1 to 9 km	1981	2010	28	6	225528	85.8
> 9 km	1981	2010	28	6	225528	85.8

Cloud Amount (hours with)

1981 to 2010 Canadian Climate Normals Element Metadata
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	1981	2010	28	6	225528	85.8
3 to 7 tenths	1981	2010	28	6	225528	85.8
8 to 10 tenths	1981	2010	28	6	225528	85.8

Frost-Free

1981 to 2010 Canadian Climate Normals Element Metadata
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	1981	2006	26	0	26	100.0
Average Date of First Fall Frost	1981	2006	26	0	26	100.0
Average Length of Frost-Free Period	1981	2006	26	0	26	100.0
Probability of last temperature in spring <= 0°C, on or after (Date)
10 %	1943	2006	63	0	64	100.0
25 %	1943	2006	63	0	64	100.0
33 %	1943	2006	63	0	64	100.0
50 %	1943	2006	63	0	64	100.0
66 %	1943	2006	63	0	64	100.0
75 %	1943	2006	63	0	64	100.0
90 %	1943	2006	63	0	64	100.0
Probability of first temperature in fall <= 0°C, on or before (Date)
10 %	1943	2006	63	0	64	100.0
25 %	1943	2006	63	0	64	100.0
33 %	1943	2006	63	0	64	100.0
50 %	1943	2006	63	0	64	100.0
66 %	1943	2006	63	0	64	100.0
75 %	1943	2006	63	0	64	100.0
90 %	1943	2006	63	0	64	100.0
Probability of frost-free period equal to or less than indicated period (Days)
10 %	1943	2006	63	0	64	100.0
25 %	1943	2006	63	0	64	100.0
33 %	1943	2006	63	0	64	100.0
50 %	1943	2006	63	0	64	100.0
66 %	1943	2006	63	0	64	100.0
75 %	1943	2006	63	0	64	100.0
90 %	1943	2006	63	0	64	100.0

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Date modified:: 2024-03-27

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Canadian Climate Normals 1981-2010 Station Data

Temperature and Precipitation Graph for 1981 to 2010 Canadian Climate Normals
GRANDE PRAIRIE A

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Canadian Climate Normals 1981-2010 Station Data

Temperature and Precipitation Graph for 1981 to 2010 Canadian Climate NormalsGRANDE PRAIRIE A

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Temperature and Precipitation Graph for 1981 to 2010 Canadian Climate Normals
GRANDE PRAIRIE A