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Canadian Climate Normals 1971-2000

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.

NOTE!! 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 INT'L A *
ALBERTA
Latitude: 51°06'50.000" N Longitude: 114°01'13.000" W Elevation: 1,084.10 m
Climate ID: 3031093 WMO ID: 71877 TC ID: YYC
Normals from to  
January-June January-December+Year July-December
Temperature:Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
Daily Average (°C)-8.9 -6.1 -1.9 4.6 9.8 13.8 16.2 15.6 10.8 5.4 -3.1 -7.4 4.1 A
Standard Deviation5 4.7 2.8 1.9 1.5 1.2 1.3 1.8 2 1.6 3.6 4.6 1.1 A
Daily Maximum (°C)-2.8 -0.1 4 11.3 16.4 20.2 22.9 22.5 17.6 12.1 2.8 -1.3 10.5 A
Daily Minimum (°C)-15.1 -12 -7.8 -2.1 3.1 7.3 9.4 8.6 4 -1.4 -8.9 -13.4 -2.4 A
Extreme Maximum (°C)16.5 22.6 22.8 29.4 32.4 35 36.1 35.6 33.3 29.4 22.8 19.5    
Date (yyyy/dd)1987/10 1992/27 1906/30 1926/29 1986/30 1926/26 1919/15 1914/03 1967/01 1889/05 1975/04 1999/27  
Extreme Minimum (°C)-44.4 -45 -37.2 -30 -16.7 -3.3 -0.6 -3.2 -13.3 -25.7 -35 -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:
Rainfall (mm)0.2 0.1 1.7 11.5 51.4 79.8 67.9 58.7 41.7 6.2 1.2 0.3 320.6 A
Snowfall (cm)17.7 13.4 21.9 15.4 9.7 0 0 0 4.8 9.9 16.4 17.6 126.7 A
Precipitation (mm)11.6 8.8 17.4 23.9 60.3 79.8 67.9 58.8 45.7 13.9 12.3 12.2 412.6 A
Average Snow Depth (cm)6 4 3 1 0 0 0 0 0 0 2 4 2 A
Median Snow Depth (cm)5 4 2 0 0 0 0 0 0 0 1 4 1 A
Snow Depth at Month-end (cm)5 3 2 0 0 0 0 0 0 1 4 5 2 A
Extreme Daily Rainfall (mm)7.6 6.4 23.4 37.1 65 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 22.9 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 1895/19 1914/04 1914/13 1889/11  
Extreme Daily Precipitation (mm)25.4 27.7 25 45.7 65 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 20 0 0 0 10 23 25 30    
Date (yyyy/dd)1997/10 1978/13 1998/18 1966/27 1966/01 1955/01 1955/01 1955/01 1965/26 1957/22 1965/15 1996/30  
Days with Maximum Temperature:
<= 0 °C16 11.7 8.5 1.7 0 0 0 0 0.07 1.6 9.3 14.4 63.4 A
> 0 °C15 16.5 22.5 28.3 31 30 31 31 29.9 29.4 20.7 16.6 301.9 A
> 10 °C2 3.7 6.9 17.7 26.9 29.5 31 30.6 25.7 19.9 4.8 2.2 200.9 A
> 20 °C0 0.03 0.03 2.5 8.8 15.2 22.5 21.3 11.3 3.7 0.13 0 85.5 A
> 30 °C0 0 0 0 0.14 0.27 1.8 2.1 0.23 0 0 0 4.5 A
> 35 °C0 0 0 0 0 0 0.03 0 0 0 0 0 0.03 A
Days with Minimum Temperature:
> 0 °C0.67 1.4 1.8 8.9 25.4 29.7 31 30.8 25.3 11.7 1.6 1.1 169.3 A
<= 2 °C30.8 27.7 30.4 25.3 12 1.4 0.07 0.48 9.4 24 29.3 30.6 221.3 A
<= 0 °C30.3 26.9 29.2 21.1 5.6 0.27 0 0.17 4.7 19.3 28.4 29.9 196 A
< -2 °C29.3 25.5 26.2 14.1 1.6 0 0 0.07 1.7 12.9 26 28.7 166 A
< -10 °C20.3 14.5 9.1 1.5 0 0 0 0 0 1.4 11.2 18.3 76.4 A
< -20 °C9.2 5.6 1.8 0.03 0 0 0 0 0 0.23 2.2 6.9 26 A
< - 30 °C2.1 0.67 0.20 0 0 0 0 0 0 0 0.20 1.6 4.8 A
Days with Rainfall:
>= 0.2 mm0.23 0.20 1.1 4.4 10.5 13.4 13 11 8.7 3.6 0.97 0.40 67.5 A
>= 5 mm0 0 0.14 0.63 3.4 4.8 4.5 3.5 2.8 0.37 0.07 0 20.2 A
>= 10 mm0 0 0.03 0.20 1.6 2.4 2.4 1.8 1 0.07 0 0 9.5 A
>= 25 mm0 0 0 0.07 0.17 0.50 0.13 0.30 0.20 0 0 0 1.4 A
Days With Snowfall:
>= 0.2 cm9.7 7.6 9.4 6.3 2.2 0.03 0 0.10 1.6 3.8 7.8 8.2 56.8 A
>= 5 cm0.47 0.53 1.3 0.77 0.55 0 0 0 0.40 0.57 0.93 0.90 6.5 A
>= 10 cm0.17 0.10 0.28 0.23 0.17 0 0 0 0.07 0.23 0.27 0.20 1.7 A
>= 25 cm0 0 0 0 0.07 0 0 0 0 0 0 0 0.07 A
Days with Precipitation:
>= 0.2 mm9 6.9 9.3 9 11.3 13.4 13 11 9.3 6.3 7.6 7.4 113.6 A
>= 5 mm0.23 0.17 0.90 1.3 3.9 4.8 4.5 3.5 3.1 0.83 0.53 0.53 24.3 A
>= 10 mm0.10 0.03 0.21 0.40 1.9 2.4 2.4 1.8 1.2 0.23 0.03 0.17 10.8 A
>= 25 mm0 0 0.03 0.07 0.24 0.50 0.13 0.30 0.20 0 0 0 1.5 A
Days with Snow Depth:
>= 1 cm22.3 16.4 12.7 3.6 0.83 0 0 0 0.40 2.6 11.2 18.4 88.4 A
>= 5 cm12.2 9.6 7.3 1.3 0.47 0 0 0 0.13 1.2 5.4 9.1 46.7 A
>= 10 cm7.4 4 2.7 0.60 0.13 0 0 0 0 0.30 2.2 5.3 22.7 A
>= 20 cm1.3 0.93 0.83 0.13 0.03 0 0 0 0 0 0.23 1.4 4.9 A
Wind:
Speed (km/h)14.8 14.6 15 16.5 16.6 15.6 14 13.2 14.1 14.6 13.7 14.9 14.8 A
Most Frequent DirectionW W NW NW NW NW NW NW NW W W W NW A
Maximum Hourly Speed (km/h)84 89 85 105 90 82 82 97 84 93 84 100    
Date (yyyy/dd)1934/23 1972/16 1951/15 1935/13 1946/08 1963/22 1944/06 1931/03 1964/05 1993/27 1941/24 1933/23  
Direction of Maximum Hourly SpeedN NW NW N NW NW NW N NW N W N N  
Maximum 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 Maximum GustW NW N NW NW S NW NW W NW SW NW S  
Days with Winds >= 52 km/h4.6 3.1 2.5 2.8 3.7 3 2 2.3 2.4 3.3 3.2 4.1 36.9 A
Days with Winds >= 63 km/h2.1 1.4 1.1 1.1 1.6 0.9 0.7 0.8 0.8 1.4 1.3 1.6 14.7 A
Degree Days:
Above 24 °C0 0 0 0 0 0 0.2 0 0 0 0 0 0.2 A
Above 18 °C0 0 0 0 1 4.8 16.8 15.6 1.7 0.3 0 0 40.3 A
Above 15 °C0 0 0 0.4 6.7 24 58.2 54.5 11.6 1.9 0 0 157.3 A
Above 10 °C0 0.3 0.1 9.7 49.5 119.5 191.1 177.1 69.5 16.6 0.6 0 633.9 A
Above 5 °C1.7 4 7.9 53 159 264 345.6 329 182.4 74 7.8 2.3 1430.7 A
Above 0 °C16.7 27.9 52.3 156.4 307.4 414 500.6 483.8 324.5 185.7 39.8 19.2 2528.3 A
Below 0 °C293.3 198.7 112.3 17.6 0 0 0 0 1 19.3 131.2 248.3 1021.6 A
Below 5 °C433.3 316.2 223 64.2 6.6 0 0 0.2 8.8 62.5 249.2 386.4 1750.4 A
Below 10 °C586.7 453.8 370.1 170.9 52.1 5.6 0.5 3.3 45.9 160.1 392 539.1 2780 A
Below 15 °C741.6 594.8 525 311.6 164.3 60.1 22.7 35.7 138 300.4 541.4 694.1 4129.7 A
Below 18 °C834.6 679.6 618 401.2 251.7 130.9 74.2 89.8 218.2 391.8 631.4 787.1 5108.4 A
Evaporation:
Lake Evaporation (mm)0 0 0 0 0 5.1 5.1 4.4 3.2 0 0 0 0 C
Bright Sunshine:
Total Hours117.4 141.4 177.6 218.8 253.7 280.3 314.9 281.9 207.7 180.5 123.9 107.4 2405.3 A
Days with measureable26.6 25.8 27.6 28 28.9 28.6 30.4 29.7 27.3 28.6 25.2 26.3 332.9 A
% of possible daylight hours44.8 50.2 48.3 52.8 52.7 56.7 63.2 62.5 54.6 54.3 46.1 43.4 52.5 A
Extreme Daily9 10.5 11.9 14.2 15.6 16.2 16 14.7 13.1 11 9.4 7.9   A
Date (yyyy/dd)1998/31 1978/26 1990/24 2000/29 1973/23 1973/26 1973/03 1978/03 1993/02 1989/03 1999/01 1974/01  
Humidex:
Extreme Humidex15.6 21.9 21.7 27.2 31.6 33.3 36.9 36 32.9 28.7 22.2 19.4    
Date (yyyy/dd)1981/20 1992/27 1966/29 1977/24 1956/31 1961/16 2002/13 1971/02 1967/05 1980/06 1975/04 1999/27  
Days with Humidex >= 300 0 0 0 0.1 0.4 2.9 2.6 0.2 0 0 0 6.1 A
Days with Humidex >= 350 0 0 0 0 0 0 0.1 0 0 0 0 0.1 A
Days with Humidex >= 400 0 0 0 0 0 0 0 0 0 0 0 0 A
Wind Chill:
Extreme Wind Chill-52.1 -52.6 -44.7 -37.1 -23.7 -5.8 -4.1 -5.2 -12.5 -34.3 -47.9 -55.1    
Date (yyyy/dd)1954/16 1989/01 1976/02 1954/01 1954/01 1969/11 1999/15 2002/02 1972/25 1984/31 1985/26 1964/15  
Days with Wind Chill < -2014.6 9.5 5.2 0.5 0 0 0 0 0 0.5 5.2 11.2 46.8 A
Days with Wind Chill < -307.3 4.3 1.1 0 0 0 0 0 0 0.1 1.4 5.4 19.6 A
Days with Wind Chill < -401.8 0.5 0.1 0 0 0 0 0 0 0 0.1 1.4 3.8 A
Humidity:
Average Vapour Pressure (kPa)0.2 0.3 0.4 0.5 0.7 0.9 1.1 1.1 0.8 0.5 0.3 0.3 0.6 A
Average Relative Humidity - 0600LST (%)65.2 66.4 71.5 70.3 71.4 73.1 77.4 79.7 76 68.2 69.7 65 71.2 A
Average Relative Humidity - 1500LST (%)56.6 54.3 51.9 40.9 42.8 45.8 45.7 44.8 45.1 42.9 54.6 56.1 48.5 A
Pressure:
Average Station Pressure (kPa)88.8 88.8 88.7 88.9 88.9 88.9 89.2 89.2 89.1 89 88.8 88.8 88.9 A
Average Sea Level Pressure (kPa)101.8 101.7 101.6 101.5 101.4 101.3 101.6 101.6 101.7 101.6 101.6 101.7 101.6 A
Visibility (hours with):
< 1 km12.1 9.3 13.6 6.1 3.1 1.3 0.5 2.1 3.9 7.3 14.4 8.6 82.2 B
1 to 9 km107.2 99.7 105.3 57.1 35 16.3 8.1 21.1 30 38.5 85.3 86.4 690 B
> 9 km624.7 569.5 625.1 656.8 705.9 702.4 735.5 720.8 686.2 698.2 620.3 649 7994.3 B
Cloud Amount (hours with):
0 to 2 tenths196.3 157.6 165.6 152.3 145.5 141.1 214.5 218.8 216.1 211.1 181.8 183.1 2183.6 B
3 to 7 tenths163.9 160.5 180.4 185.6 200.6 231.9 241.3 217.3 183.8 193.5 165.8 172.8 2297.5 B
8 to 10 tenths383.8 360.4 398 382.2 397.9 346.9 288.2 308 320.1 339.4 372.4 388.1 4285.4 B


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Date Modified: 2013-02-04

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