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Weather & Climate
Gravenhurst, Ontario, Canada
Overview
Climate data and monthly weather averages for Gravenhurst.
Key Metrics
Annual Avg
6.7°C
Summer Avg
19.5°C
Winter Avg
-6.6°C
Record High
35.5°C
Record Low
-35.6°C
Annual Precipitation
530.6 mm
Avg Humidity
77%
Summer Humidity
70%
Winter Humidity
89%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 11.3° | -8.1° | -34.4° | 36.9 | 90% | 42 | 42.2 |
| Feb | 11.6° | -7.7° | -33.9° | 34.7 | 88% | 61 | 45.9 |
| Mar | 26.5° | -2.4° | -35.6° | 40.6 | 80% | 110 | 45 |
| Apr | 26.9° | 4.8° | -15.2° | 39.3 | 73% | 137 | 34.9 |
| May | 32.6° | 11.8° | -4.9° | 46.5 | 71% | 171 | 25.8 |
| Jun | 33° | 17.4° | 2.1° | 49.2 | 71% | 182 | 25.3 |
| Jul | 35.5° | 20.8° | 5.9° | 44.6 | 69% | 189 | 20.4 |
| Aug | 35.2° | 20.3° | 6.5° | 48.1 | 69% | 162 | 23.9 |
| Sep | 32.8° | 16.5° | 1.3° | 46.5 | 70% | 121 | 24.9 |
| Oct | 29.1° | 8.9° | -5.2° | 55.8 | 77% | 74 | 26.3 |
| Nov | 21.7° | 2.3° | -14.5° | 45.3 | 81% | 44 | 31.2 |
| Dec | 13.4° | -4.1° | -34.7° | 43.1 | 88% | 32 | 41.8 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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