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Weather & Climate
South River, Ontario, Canada
Overview
Climate data and monthly weather averages for South River.
Key Metrics
Annual Avg
4.7°C
Summer Avg
17.8°C
Winter Avg
-9.5°C
Record High
33.6°C
Record Low
-41.6°C
Annual Precipitation
766.5 mm
Avg Humidity
82%
Summer Humidity
77%
Winter Humidity
93%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 9.1° | -11.1° | -41.6° | 48.1 | 94% | 41 | 37.3 |
| Feb | 7.2° | -10.5° | -36.7° | 43.4 | 94% | 62 | 36.1 |
| Mar | 26° | -4.6° | -33.4° | 49 | 85% | 112 | 38.1 |
| Apr | 26.8° | 3.6° | -16.1° | 58.5 | 75% | 136 | 31.6 |
| May | 31.3° | 10.9° | -5.2° | 66.3 | 74% | 166 | 26.3 |
| Jun | 30.8° | 16.1° | 0.7° | 82.8 | 77% | 177 | 24.8 |
| Jul | 33.6° | 19° | 6.2° | 80 | 77% | 184 | 20.9 |
| Aug | 32.5° | 18.2° | 4.3° | 72.9 | 77% | 156 | 20.7 |
| Sep | 31.5° | 14.5° | -1.4° | 72 | 77% | 116 | 25.1 |
| Oct | 25.8° | 7.1° | -7.4° | 77.2 | 80% | 71 | 26.4 |
| Nov | 20.3° | 0.4° | -18.3° | 62.7 | 84% | 41 | 29.7 |
| Dec | 12.9° | -6.8° | -36.9° | 53.6 | 91% | 30 | 38.9 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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