Canadian Climate Normals 1981-2010 Station 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.

Metadata including Station Name, Province, Latitude, Longitude, Elevation, Climate ID, WMO ID, TC ID
EMPRESS
ALBERTA
Latitude: 50°57'21.002" N Longitude: 110°00'22.080" W Elevation: 612.00 m
Climate ID: 3022400 WMO ID: TC ID:
Temperature
1981 to 2010 Canadian Climate Normals station data
Temperature
  JanFebMarAprMayJunJulAugSepOctNovDecYear Code
Daily Average (°C) -12.0 -8.3 -1.2 6.6 12.5 16.9 19.8 19.1 12.8 5.8 -3.8 -10.1 4.8 C
Standard Deviation 5.5 4.5 3.8 1.9 1.5 1.6 1.6 2.1 1.9 1.7 4.0 5.1 2.3 C
Daily Maximum (°C) -6.5 -2.6 4.8 13.9 19.7 23.8 27.4 27.0 20.4 12.9 1.7 -4.7 11.5 C
Daily Minimum (°C) -17.5 -14.1 -7.2 -0.7 5.2 9.9 12.1 11.1 5.2 -1.2 -9.3 -15.4 -1.8 C
Extreme Maximum (°C) 12.0 17.0 28.0 32.0 36.0 41.1 42.2 41.7 38.3 31.7 23.0 15.0
Date
(yyyy/dd)
1986/ 19 1992/ 27 2004/ 30 1980/ 20 1986/ 29 1937/ 30 1941/ 18 1961/ 05 1967/ 05 1957/ 01 1999/ 12 1998/ 13
Extreme Minimum (°C) -47.8 -45.6 -40.0 -28.9 -14.4 -4.4 0.0 0.0 -10.0 -26.0 -36.5 -45.0
Date
(yyyy/dd)
1943/ 22 1917/ 02 1951/ 11 1954/ 03 1954/ 01 1969/ 12 1944/ 16 1956/ 31 1961/ 27 1991/ 28 1996/ 24 1977/ 09
Precipitation
1981 to 2010 Canadian Climate Normals station data
Precipitation
  JanFebMarAprMayJunJulAugSepOctNovDecYear Code
Rainfall (mm) 0.2 0.3 2.1 13.8 38.2 68.9 50.3 33.9 28.1 7.5 1.0 0.4 244.5 C
Snowfall (cm) 14 8 11 5 1 0 0 0 0 4 10 14 67 C
Precipitation (mm) 14.2 8.6 12.7 18.7 38.8 68.9 50.3 33.9 28.5 11.5 10.8 14.8 311.6 C
Extreme Daily Rainfall (mm) 10.0 6.5 8.6 31.0 53.3 86.4 57.2 64.0 73.6 37.1 8.9 4.0
Date
(yyyy/dd)
1980/ 22 2006/ 13 1993/ 26 1978/ 11 1968/ 27 1969/ 29 1918/ 27 1988/ 16 2005/ 10 1946/ 02 1971/ 13 1979/ 05
Extreme Daily Snowfall (cm) 25 15 25 20 6 0 0 0 11 18 17 15
Date
(yyyy/dd)
1954/ 23 1956/ 23 1954/ 12 1940/ 02 2004/ 04 1918/ 01 1918/ 01 1918/ 01 1996/ 30 1991/ 26 1996/ 18 1975/ 09
Extreme Daily Precipitation (mm) 25.4 15.2 25.4 31.0 53.3 86.4 57.2 64.0 73.6 37.1 17.0 15.2
Date
(yyyy/dd)
1954/ 23 1956/ 23 1954/ 12 1978/ 11 1968/ 27 1969/ 29 1918/ 27 1988/ 16 2005/ 10 1946/ 02 1996/ 18 1975/ 09
Extreme Snow Depth (cm) 38 52 40 27 6 0 0 0 0 11 11 16
Date
(yyyy/dd)
2004/ 31 2004/ 01 2003/ 12 2003/ 06 2004/ 05 1981/ 01 1981/ 01 1981/ 01 1980/ 01 2001/ 24 2001/ 30 2004/ 31
Days with Maximum Temperature
1981 to 2010 Canadian Climate Normals station data
Days with Maximum Temperature
  JanFebMarAprMayJunJulAugSepOctNovDecYear Code
<= 0 °C 22.2 16.1 9.0 1.4 0.0 0.0 0.0 0.0 0.0 2.2 12.3 20.4 83.5 C
> 0 °C 8.8 12.2 22.0 28.6 31.0 30.0 31.0 31.0 30.0 28.8 17.7 10.7 281.7 C
> 10 °C 0.2 1.2 8.2 21.7 28.2 29.8 31.0 30.9 27.4 20.1 3.8 0.5 203.0 C
> 20 °C 0.0 0.0 0.3 5.4 14.2 22.3 28.8 26.9 15.5 4.5 0.1 0.0 118.2 C
> 30 °C 0.0 0.0 0.0 0.1 1.0 3.2 8.6 9.2 2.5 0.1 0.0 0.0 24.7 C
> 35 °C 0.0 0.0 0.0 0.0 0.1 0.4 1.9 1.5 0.1 0.0 0.0 0.0 4.0 C
Days with Minimum Temperature
1981 to 2010 Canadian Climate Normals station data
Days with Minimum Temperature
  JanFebMarAprMayJunJulAugSepOctNovDecYear Code
> 0 °C 0.3 0.5 2.4 11.6 26.0 29.9 31.0 30.9 25.9 11.7 2.1 0.5 172.6 C
<= 2 °C 30.9 28.1 30.1 21.8 8.1 0.4 0.0 0.4 7.0 24.2 28.9 30.9 210.7 C
<= 0 °C 30.7 27.7 28.6 18.4 5.0 0.1 0.0 0.1 4.1 19.3 27.9 30.5 192.6 C
< -2 °C 29.8 25.8 22.1 9.8 1.6 0.0 0.0 0.0 1.0 11.5 24.6 29.0 155.3 C
< -10 °C 22.1 16.6 7.5 1.2 0.0 0.0 0.0 0.0 0.0 1.4 11.7 20.1 80.5 C
< -20 °C 11.1 6.9 2.4 0.0 0.0 0.0 0.0 0.0 0.0 0.2 2.5 8.8 31.9 C
< - 30 °C 4.1 1.8 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4 2.6 9.2 C
Days with Rainfall
1981 to 2010 Canadian Climate Normals station data
Days with Rainfall
  JanFebMarAprMayJunJulAugSepOctNovDecYear Code
>= 0.2 mm 0.12 0.12 0.50 2.7 6.4 10 6.9 5.8 5.4 2.4 0.32 0.24 40.8 C
>= 5 mm 0 0.04 0.23 1.1 2.8 4.5 3.1 2.1 1.9 0.50 0.04 0 16.3 C
>= 10 mm 0 0 0 0.40 1.4 2.6 1.7 0.96 0.71 0.08 0 0 7.8 C
>= 25 mm 0 0 0 0 0.04 0.40 0.36 0.16 0.08 0 0 0 1 C
Days With Snowfall
1981 to 2010 Canadian Climate Normals station data
Days With Snowfall
  JanFebMarAprMayJunJulAugSepOctNovDecYear Code
>= 0.2 cm 4.2 2.5 3.1 1 0.20 0 0 0 0.04 1.1 2.6 4 18.8 C
>= 5 cm 0.92 0.62 0.58 0.32 0.04 0 0 0 0.04 0.32 0.83 1.1 4.8 C
>= 10 cm 0.15 0.15 0.15 0.20 0 0 0 0 0.04 0.12 0.13 0.12 1.1 C
>= 25 cm 0 0 0 0 0 0 0 0 0 0 0 0 0 C
Days with Precipitation
1981 to 2010 Canadian Climate Normals station data
Days with Precipitation
  JanFebMarAprMayJunJulAugSepOctNovDecYear Code
>= 0.2 mm 4.3 2.6 3.6 3.5 6.5 10.0 6.9 5.8 5.4 3.3 3.0 4.3 59.1 C
>= 5 mm 0.9 0.7 0.8 1.4 2.8 4.5 3.1 2.1 1.9 0.8 0.9 1.1 21.1 C
>= 10 mm 0.2 0.2 0.2 0.6 1.4 2.6 1.7 1.0 0.8 0.2 0.1 0.1 8.8 C
>= 25 mm 0.0 0.0 0.0 0.0 0.0 0.4 0.4 0.2 0.1 0.0 0.0 0.0 1.0 C
Degree Days
1981 to 2010 Canadian Climate Normals station data
Degree Days
  JanFebMarAprMayJunJulAugSepOctNovDecYear Code
Above 24 °C 0 0 0 0 0.3 2.4 6.6 5.2 0.3 0 0 0 14.8 C
Above 18 °C 0 0 0 0.6 8.4 31.4 75.5 71.2 9.5 0.2 0 0 196.7 C
Above 15 °C 0 0 0 2.9 27.6 77.4 151.4 138.3 29.2 1.9 0 0 428.9 C
Above 10 °C 0 0 1.4 24.7 105.7 206.4 303.5 283 109.4 19.3 0.6 0 1,054 C
Above 5 °C 0.4 1.2 13.6 91.1 234.9 355.4 458.5 437.3 237.1 84.1 7.1 0.8 1921.5 C
Above 0 °C 4.4 13.6 69.6 211.7 386.2 505.4 613.5 592.3 383.5 198.8 36.8 10.1 3025.9 C
Below 0 °C 376.2 248.8 107.6 12.7 0.1 0 0 0 0 18.3 150.1 319.4 1233.1 C
Below 5 °C 527.2 377.5 206.6 42.1 3.9 0 0 0.1 3.6 58.5 270.3 465.1 1954.8 C
Below 10 °C 681.8 517.4 349.3 125.7 29.6 1 0.1 0.8 25.9 148.8 413.8 619.3 2913.6 C
Below 15 °C 836.8 658.6 503 254 106.5 22 2.9 11 95.8 286.4 563.3 774.3 4114.6 C
Below 18 °C 929.8 743.3 595.9 341.6 180.3 66 20 36.9 166 377.7 653.3 867.3 4978.1 C
Frost-Free
1981 to 2010 Canadian Climate Normals station data (Frost-Free)
Frost-FreeCode
Average Date of Last Spring Frost May 20 LegendCC
Average Date of First Fall Frost September 18 LegendCC
Average Length of Frost-Free Period 120 Days LegendCC
Probability of last temperature in spring of 0 °C or lower on or after indicated dates 10% 25% 33% 50% 66% 75% 90%
DateJun 01May 28May 25May 21May 13May 12May 06
Probability of first temperature in fall of 0 °C or lower on or after indicated dates 10% 25% 33% 50% 66% 75% 90%
DateSep 02Sep 10Sep 12Sep 15Sep 20Sep 22Oct 05
Probability of frost-free period equal to or less than indicated period (Days) 10% 25% 33% 50% 66% 75% 90%
Days101107109120124126142
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