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Weather & Climate
Slave Lake, Alberta, Canada
Overview
Climate data and monthly weather averages for Slave Lake.
Key Metrics
Annual Avg
2.1°C
Summer Avg
15.8°C
Winter Avg
-11.9°C
Record High
31.9°C
Record Low
-44°C
Annual Precipitation
556.5 mm
Avg Humidity
80%
Summer Humidity
69%
Winter Humidity
95%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 6.9° | -12.5° | -44° | 27.9 | 95% | 23 | 39.7 |
| Feb | 12.8° | -11.2° | -41.3° | 19.6 | 94% | 47 | 31.2 |
| Mar | 16.4° | -5.7° | -40.8° | 29.1 | 87% | 98 | 31.6 |
| Apr | 24.6° | 2.7° | -23.9° | 36 | 73% | 135 | 30.2 |
| May | 28.5° | 9.8° | -8° | 60.4 | 67% | 174 | 28.3 |
| Jun | 31.5° | 14.6° | -1.4° | 93.3 | 69% | 173 | 28.3 |
| Jul | 31.9° | 17.2° | 3.2° | 99.8 | 69% | 176 | 23.4 |
| Aug | 30.9° | 15.7° | 2.2° | 62.6 | 69% | 146 | 22.8 |
| Sep | 29.4° | 10.2° | -5.2° | 42.6 | 73% | 98 | 24.9 |
| Oct | 25.8° | 2.5° | -19.9° | 34.7 | 81% | 55 | 26.8 |
| Nov | 12.8° | -6° | -33.4° | 27.9 | 90% | 25 | 27 |
| Dec | 6.2° | -11.9° | -39.3° | 22.6 | 95% | 16 | 31 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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