Canadian Climate Normals 1971-2000 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
SLAVE LAKE A
ALBERTA
Latitude: 55°18'00.000" N Longitude: 114°47'00.000" W Elevation: 580.60 m
Climate ID: 3066001 WMO ID: TC ID:
1971 to 2000 Canadian Climate Normals station data
 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
Temperature:
Daily Average (°C)-14.5 -11.7 -4.7 3.3 9.7 13.6 15.6 14.6 9.2 3.8 -6.1 -12.9 1.7 LegendCC
Standard Deviation4.9 5.3 3.6 2.1 1.2 0.9 1 1.6 1.8 1.5 4 4.4 1.5 LegendCC
Daily Maximum (°C)-9.4 -5.9 1.2 9.4 16.1 19.3 21.2 20.3 14.6 9.1 -1.6 -8.2 7.2 LegendCC
Daily Minimum (°C)-19.6 -17.4 -10.6 -2.9 3.3 7.9 10 8.8 3.7 -1.5 -10.5 -17.7 -3.9 LegendCC
Extreme Maximum (°C)13.6 14.8 17 28.6 32.5 33.3 32.2 32.3 29.6 28.1 19.1 12.4   Legend
Extreme Minimum (°C)-42.8 -42.5 -38.3 -26.1 -7.2 -2.7 2.9 -2.2 -7.8 -21.8 -36.1 -42.5   Legend
Precipitation:
Rainfall (mm)0.6 1 1.7 12.1 40.9 88.2 95.6 72.4 48.8 18 3.1 2 384.5 LegendCC
Snowfall (cm)29.9 21.2 20.8 10.4 2.7 0 0 0 2.2 9.7 19.7 29.8 146.5 LegendCC
Precipitation (mm)24.3 17.3 17.7 21.4 43.5 88.2 95.6 72.5 50.8 27.2 18.9 25.2 502.7 LegendCC
Average Snow Depth (cm)22 26 23 8 0 0 0 0 0 1 5 14 8 LegendCC
Median Snow Depth (cm)23 26 23 6 0 0 0 0 0 0 4 13 8 LegendCC
Snow Depth at Month-end (cm)27 25 16 1 0 0 0 0 1 2 8 17 8 LegendCC
Extreme Daily Rainfall (mm)3.4 7.6 6 16.2 35.4 82.4 57.2 71 37 25.2 9.5 11.9   Legend
Extreme Daily Snowfall (cm)18.8 15.5 25.9 17.1 16.5 0 0 0 10.9 15.2 15.2 19.3   Legend
Extreme Daily Precipitation (mm)15.2 15.5 15.5 17.1 35.4 82.4 57.2 71 37 25.2 13 17.8   Legend
Extreme Snow Depth (cm)69 81 104 85 14 0 0 0 13 20 32 51   Legend
Days with Maximum Temperature:
<= 0 °C24.9 18.8 11.4 2.1 0.04 0 0 0 0.29 2 16.3 24.4 100.4 LegendCC
> 0 °C6.1 9.4 19.6 27.9 31 30 31 31 29.7 29 13.7 6.6 264.9 LegendCC
> 10 °C0.29 0.84 1.6 13.2 27.1 29.8 31 30.7 24.3 13.7 1.2 0.13 173.9 LegendCC
> 20 °C0 0 0 1.4 7.2 12.2 19.3 15.5 4.2 1.3 0 0 61.1 LegendCC
> 30 °C0 0 0 0 0.17 0.08 0.46 0.46 0 0 0 0 1.2 LegendCC
> 35 °C0 0 0 0 0 0 0 0 0 0 0 0 0 LegendCC
Days with Minimum Temperature:
> 0 °C0.21 0.56 0.80 7.3 24.4 29.8 31 30.6 24.3 11.4 1.1 0.17 161.6 LegendCC
<= 2 °C30.9 28.2 30.8 27.4 12.1 0.96 0 1.3 10.2 25 29.8 31 227.6 LegendCC
<= 0 °C30.8 27.7 30.2 22.7 6.6 0.19 0 0.38 5.7 19.7 28.9 30.8 203.7 LegendCC
< -2 °C30.3 27.5 27.6 15.2 2 0.04 0 0.08 2.3 12.9 26.8 30.5 175.1 LegendCC
< -10 °C25.5 21.5 14 2.1 0 0 0 0 0 1.5 13.4 24.5 102.5 LegendCC
< -20 °C14.5 10 4.1 0.23 0 0 0 0 0 0.04 3.4 11.2 43.4 LegendCC
< - 30 °C4.5 3.3 0.44 0 0 0 0 0 0 0 0.13 3 11.4 LegendCC
Days with Rainfall:
>= 0.2 mm0.88 0.88 1.6 4.3 10.1 14.1 15 12.6 11.9 7.3 2.6 1.2 82.3 LegendCC
>= 5 mm0 0.04 0.04 0.96 2.5 5.3 5.6 4.1 3.1 1.1 0.13 0.13 23 LegendCC
>= 10 mm0 0 0 0.31 1.2 2.6 3.2 2.2 1.3 0.30 0 0.04 11.1 LegendCC
>= 25 mm0 0 0 0 0.17 0.69 0.79 0.50 0.17 0.04 0 0 2.4 LegendCC
Days With Snowfall:
>= 0.2 cm12.5 10.2 8.6 3.6 1 0 0 0 0.96 4.5 10.1 13 64.4 LegendCC
>= 5 cm1.6 1.1 1 0.77 0.16 0 0 0 0.13 0.52 0.92 1.7 8 LegendCC
>= 10 cm0.54 0.12 0.32 0.23 0.04 0 0 0 0.04 0.09 0.13 0.26 1.8 LegendCC
>= 25 cm0 0 0.04 0 0 0 0 0 0 0 0 0 0.04 LegendCC
Days with Precipitation:
>= 0.2 mm12 10 9.2 7.1 10.5 14.1 15 12.6 12.6 10 11.3 12.9 137.3 LegendCC
>= 5 mm1 0.88 0.84 1.7 2.6 5.3 5.6 4.1 3.3 1.7 0.75 1.4 29.2 LegendCC
>= 10 mm0.38 0.04 0.24 0.46 1.3 2.6 3.2 2.2 1.4 0.48 0.08 0.22 12.5 LegendCC
>= 25 mm0 0 0 0 0.17 0.69 0.79 0.50 0.17 0.04 0 0 2.4 LegendCC
Days with Snow Depth:
>= 1 cm31 28.1 24.9 10 0.39 0 0 0 0.45 2.4 18.4 28.7 144.3 LegendCC
>= 5 cm28.8 24.9 22.2 7.9 0.30 0 0 0 0.18 1.4 11.8 26.2 123.7 LegendCC
>= 10 cm24.6 22.6 18.6 6.1 0.09 0 0 0 0.09 0.82 5.8 19.8 98.6 LegendCC
>= 20 cm17.7 16 14.9 4.1 0 0 0 0 0 0.05 1.7 7.1 61.6 LegendCC
Wind:
Speed (km/h)15.4 14.4 13.1 12.6 13 13.2 12.3 11.6 12.6 14.6 13.8 15.1 13.5 LegendCC
Most Frequent DirectionE E E W E W W W W W E W E LegendCC
Maximum Hourly Speed (km/h)97 69 59 72 66 65 64 65 63 79 71 83   Legend
Direction of Maximum Hourly SpeedW W W W W NW W W W W W W W Legend
Maximum Gust Speed (km/h)140 100 85 100 93 90 94 89 80 106 92 107   Legend
Direction of Maximum GustW W W W W W NW W W W W W W Legend
Days with Winds >= 52 km/h2.7 1.2 0.7 0.8 0.7 0.7 0.8 0.8 0.8 2.4 1.1 1.6 13.9 LegendDD
Days with Winds >= 63 km/h1.1 0.3 0 0.3 0.2 0.2 0.3 0.1 0.1 0.6 0.3 0.5 3.9 LegendDD
Degree Days:
Above 24 °C0 0 0 0 0 0 0.1 0 0 0 0 0 0.1 LegendCC
Above 18 °C0 0 0 0 0.8 2.3 8.1 8.3 0.2 0 0 0 19.6 LegendCC
Above 15 °C0 0 0 0.2 5.8 16.4 41 36.3 2.4 0.1 0 0 102.1 LegendCC
Above 10 °C0 0 0 4.3 43 112 174.8 145.4 34.6 6.3 0.2 0 520.6 LegendCC
Above 5 °C0.4 0.3 0.5 29.4 150.6 258.3 329.8 296 134.9 41.2 1.5 0 1242.9 LegendCC
Above 0 °C4.2 6 21.3 121.5 300.4 408.3 484.8 451 276.2 138.1 15.4 2.9 2230.1 LegendCC
Below 0 °C454.7 335.2 167.6 24.8 0.4 0 0 0 1.1 20.5 196 403.8 1604 LegendCC
Below 5 °C605.8 471 301.8 82.6 5.6 0 0 0 9.7 78.6 332.1 555.9 2443.2 LegendCC
Below 10 °C760.5 612.1 456.3 207.5 53 3.7 0 4.4 59.4 198.7 480.8 710.9 3547.3 LegendCC
Below 15 °C915.5 753.5 611.3 353.4 170.8 58.1 21.2 50.3 177.2 347.5 630.6 865.9 4955.3 LegendCC
Below 18 °C1008.5 838.3 704.3 443.2 258.8 134 81.3 115.3 265.1 440.4 720.6 958.9 5968.6 LegendCC
Soil Temperature:
at 5 cm depth (AM obs) (°C)-4.4 -4.3 -2.4 0.4 4.9 10.5 14.2 13.8 9.8 4.9 0.4 -2.7 3.8 LegendCC
at 5 cm depth (PM obs) (°C)-4.3 -4 -2 1.7 7.4 13 16.5 15.9 11.4 5.7 0.5 -2.6 4.9 LegendCC
at 10 cm depth (AM obs) (°C)-3.8 -3.9 -2.1 0.3 4.8 10.4 14.3 14.2 10.4 5.6 1.1 -2 4.1 LegendCC
at 10 cm depth (PM obs) (°C)-3.8 -3.7 -1.9 0.8 5.9 11.6 15.4 15.2 11.1 5.9 1 -2 4.6 LegendCC
at 20 cm depth (AM obs) (°C)-2.5 -3 -1.7 0 3.7 9.5 13.7 14.2 10.9 6.4 1.9 -0.7 4.4 LegendCC
at 20 cm depth (PM obs) (°C)-2.6 -3 -1.7 0 3.8 9.5 13.8 14.2 10.9 6.3 1.9 -0.7 4.4 LegendCC
at 50 cm depth (AM obs) (°C)-1.4 -2.2 -1.7 -0.7 1.2 6.9 11.7 12.9 10.6 6.8 2.7 0.3 3.9 LegendCC
at 100 cm depth (AM obs) (°C)1.5 0.7 0.4 0.5 0.8 4 9.1 11.4 10.7 8.3 5.2 2.8 4.6 LegendCC
at 150 cm depth (AM obs) (°C)2.8 1.9 1.4 1.2 1.2 2.6 6.2 8.7 9.2 8.1 6.1 4.1 4.5 LegendCC
at 300 cm depth (AM obs) (°C)4.6 3.8 3.3 2.8 2.5 2.5 3.4 5 6.2 6.6 6.3 5.5 4.4 LegendCC
Bright Sunshine:
Total Hours80.4 112.2 173.3 234.8 281.1 277.7 294.6 260.4 167.9 141.7 84.6 63.1 2171.8 LegendCC
Days with measureable22.7 23.1 27.9 28.2 29.4 28.3 29.8 29.5 26.3 26.3 21.8 20.7 313.8 LegendCC
% of possible daylight hours33.3 41.3 47.3 55.4 56.1 53.4 56.5 56 43.8 43.5 33.5 28.2 45.7 LegendCC
Extreme Daily8 10.1 12 14.3 16.1 16.7 16.3 15.3 13 10.4 8.7 6.9   LegendCC
Humidex:
Extreme Humidex12.8 14.1 16.6 28.1 33.3 31.7 36.5 35.7 32.3 27.3 18.4 11.9   Legend
Days with Humidex >= 300 0 0 0 0.1 0.3 2 2.4 0.1 0 0 0 4.8 LegendDD
Days with Humidex >= 350 0 0 0 0 0 0.2 0.1 0 0 0 0 0.3 LegendDD
Days with Humidex >= 400 0 0 0 0 0 0 0 0 0 0 0 0 LegendDD
Wind Chill:
Extreme Wind Chill-53.1 -56.1 -48 -33.9 -14.7 -4.5 2.9 -5.7 -14.1 -32.1 -55.2 -56.8   Legend
Days with Wind Chill < -2020.1 17.4 8.9 1.3 0 0 0 0 0 0.8 9.6 18.3 76.3 LegendDD
Days with Wind Chill < -3010.4 8.4 2.3 0.2 0 0 0 0 0 0.1 2.3 10.1 33.7 LegendDD
Days with Wind Chill < -405.4 2.9 0.4 0 0 0 0 0 0 0 0.2 3.2 12 LegendDD
Humidity:
Average Vapour Pressure (kPa)0.2 0.2 0.4 0.5 0.7 1.1 1.3 1.2 0.9 0.6 0.3 0.2 0.6 LegendDD
Average Relative Humidity - 0600LST (%)80.8 80.4 82.3 79.5 76.9 79.9 84 87.9 87 80.6 82.6 81.3 81.9 LegendCC
Average Relative Humidity - 1500LST (%)76.2 71.3 64.1 51 47.5 55.6 59 59.9 60.5 59.8 73.7 77.5 63 LegendCC
Pressure:
Average Station Pressure (kPa)94.5 94.6 94.4 94.5 94.4 94.3 94.5 94.6 94.6 94.4 94.4 94.5 94.5 LegendDD
Average Sea Level Pressure (kPa)101.7 101.9 101.5 101.5 101.3 101.2 101.4 101.4 101.6 101.4 101.5 101.7 101.5 LegendDD
Visibility (hours with):
< 1 km11 2.5 5 3.3 1.9 0.8 1.7 4 4.5 3.7 6.1 7.8 52.1 LegendDD
1 to 9 km86.8 81.1 53.6 25.1 14.9 13.3 11.8 15.8 20.1 34.4 102.8 97.7 557.4 LegendDD
> 9 km646.2 595.7 685.5 691.7 727.3 706 730.5 724.2 695.4 705.9 611.1 638.4 8157.8 LegendDD
Cloud Amount (hours with):
0 to 2 tenths194.5 175 207.2 197.3 177.2 153.5 200.9 212.7 183.3 170.8 158 185.9 2216.2 LegendDD
3 to 7 tenths126.8 119.4 134.9 157.1 186.3 188.2 205.1 194.1 148.8 151.3 111.8 119.3 1843.1 LegendDD
8 to 10 tenths422.6 384.9 402 365.7 380.5 378.3 338 337.2 387.9 421.8 450.2 438.8 4707.9 LegendDD
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