Average annual temperature is 11.9 °C
Absolute maximum temperature: 35.7 °C
Absolute minimum temperature: -22.9 °C
Number of sunny days: 192 days
Number of rainy days: 154 days
Number of snow days: 19 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) | 14.7 | 13.0 | 21.7 | 25.5 | 32.5 | 34.3 | 35.1 | 35.7 | 32.5 | 28.5 | 19.4 | 15.2 |
| Average daytime temperature (°C) | 3.1 | 6.0 | 8.6 | 17.5 | 25.0 | 29.5 | 29.0 | 28.2 | 25.4 | 17.6 | 10.1 | 7.0 |
| Average temperature (°C) | -1.2 | 0.4 | 3.2 | 10.6 | 18.4 | 23.1 | 23.5 | 23.0 | 19.9 | 12.9 | 5.3 | 3.1 |
| Average night temperature (°C) | -4.2 | -4.0 | -0.8 | 5.1 | 12.0 | 16.8 | 18.2 | 18.4 | 15.5 | 9.1 | 1.2 | 0.5 |
| Absolute minimum temperature (°C) | -22.9 | -18.5 | -12.2 | -1.6 | 2.4 | 8.6 | 13.1 | 10.8 | 10.4 | -2.5 | -11.4 | -8.2 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.1 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.3 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 3.5 | 7.2 | 6.5 | 9.4 | 11.2 | 12.5 | 12.4 | 11.0 | 9.5 | 7.1 | 7.3 | 4.0 |
| Precipitation (mm) | 67 | 72 | 95 | 50 | 36 | 28 | 127 | 114 | 90 | 72 | 28 | 69 |
| Sunny days | 13 | 17 | 15 | 16 | 19 | 18 | 12 | 14 | 15 | 16 | 22 | 15 |
| Rainy days | 7 | 9 | 14 | 13 | 12 | 12 | 19 | 17 | 15 | 14 | 7 | 15 |
| Snow days | 11 | 2 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 |
The best time to visit Township of Cornwall during the most sunny months:
The largest precipitation sum in Township of Cornwall is at