Average annual temperature is 11.2 °C
Absolute maximum temperature: 38.5 °C
Absolute minimum temperature: -22.7 °C
Number of sunny days: 217 days
Number of rainy days: 122 days
Number of snow days: 26 days
Look at detailed online map of Willis
* Weather data for Willis 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) | 4.5 | 13.5 | 20.2 | 29.3 | 32.5 | 34.4 | 37.3 | 38.5 | 36.5 | 31.6 | 18.5 | 12.2 |
| Average daytime temperature (°C) | -2.3 | 2.8 | 7.2 | 16.8 | 26.0 | 30.2 | 29.9 | 30.5 | 27.5 | 17.1 | 11.3 | 5.4 |
| Average temperature (°C) | -5.6 | -3.3 | 0.5 | 10.1 | 19.1 | 24.1 | 24.0 | 24.6 | 21.5 | 12.2 | 5.7 | 0.9 |
| Average night temperature (°C) | -8.9 | -7.9 | -3.9 | 4.6 | 13.0 | 18.2 | 18.6 | 19.5 | 16.4 | 8.2 | 1.2 | -2.8 |
| Absolute minimum temperature (°C) | -21.8 | -22.7 | -12.6 | -5.3 | 3.3 | 10.4 | 10.8 | 12.8 | 9.9 | -6.4 | -7.1 | -8.5 |
| 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) | 9.5 | 10.6 | 11.9 | 13.4 | 14.6 | 15.2 | 14.9 | 13.9 | 12.5 | 11.1 | 9.8 | 9.1 |
| Daylight minimum duration (h) | 9.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 4.5 | 7.0 | 7.6 | 9.7 | 11.4 | 12.9 | 11.8 | 11.5 | 9.9 | 7.3 | 6.9 | 5.4 |
| Precipitation (mm) | 72 | 47 | 30 | 40 | 58 | 48 | 86 | 64 | 47 | 97 | 6 | 55 |
| Sunny days | 19 | 19 | 17 | 18 | 18 | 15 | 12 | 20 | 15 | 15 | 26 | 23 |
| Rainy days | 5 | 5 | 5 | 10 | 13 | 15 | 19 | 11 | 15 | 15 | 3 | 6 |
| Snow days | 7 | 4 | 9 | 2 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 |
The best time to visit Willis during the most sunny months:
The largest precipitation sum in Willis is at