Average annual temperature is 8.5 °C
Absolute maximum temperature: 36.9 °C
Absolute minimum temperature: -28.9 °C
Number of sunny days: 231 days
Number of rainy days: 98 days
Number of snow days: 36 days
Look at detailed online map of Township of Cornwall
* Weather data for Township of Cornwall United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 2.4 | 3.3 | 5.1 | 26.0 | 31.9 | 36.9 | 35.4 | 36.6 | 35.7 | 30.7 | 18.0 | 10.9 |
| Average daytime temperature (°C) | -4.9 | -2.1 | -0.8 | 11.2 | 24.5 | 29.8 | 28.6 | 28.8 | 25.8 | 15.1 | 8.6 | 4.0 |
| Average temperature (°C) | -8.8 | -7.9 | -6.0 | 4.6 | 17.7 | 23.8 | 22.5 | 22.9 | 19.9 | 9.9 | 2.7 | -0.4 |
| Average night temperature (°C) | -12.5 | -12.4 | -10.3 | -0.6 | 11.2 | 17.8 | 16.8 | 17.9 | 14.9 | 5.7 | -1.6 | -3.6 |
| Absolute minimum temperature (°C) | -27.1 | -28.9 | -20.2 | -16.1 | 0.2 | 10.3 | 10.3 | 13.3 | 9.1 | -8.0 | -10.9 | -9.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.3 | 10.4 | 11.9 | 13.5 | 14.8 | 15.5 | 15.2 | 14.0 | 12.5 | 11.0 | 9.6 | 8.9 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 8.0 |
| Sunshine mean duration (h) | 3.8 | 7.2 | 7.1 | 9.7 | 12.4 | 12.7 | 13.2 | 11.5 | 10.1 | 7.2 | 7.7 | 5.0 |
| Precipitation (mm) | 18 | 30 | 39 | 53 | 88 | 47 | 30 | 129 | 56 | 72 | 7 | 47 |
| Sunny days | 18 | 21 | 17 | 18 | 22 | 18 | 14 | 22 | 16 | 17 | 26 | 22 |
| Rainy days | 1 | 2 | 3 | 8 | 9 | 12 | 17 | 9 | 14 | 13 | 2 | 8 |
| Snow days | 12 | 5 | 11 | 4 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 1 |
The best time to visit Township of Cornwall during the most sunny months:
Months with the longest average daylight duration in Township of Cornwall:
The largest precipitation sum in Township of Cornwall is at