Average annual temperature is 10.3 °C
Absolute maximum temperature: 35.2 °C
Absolute minimum temperature: -23.5 °C
Number of sunny days: 183 days
Number of rainy days: 156 days
Number of snow days: 26 days
Look at detailed online map of Williams Bay
* Weather data for Williams Bay 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) | 9.1 | 10.0 | 19.1 | 25.0 | 30.8 | 31.7 | 31.9 | 35.2 | 32.5 | 26.9 | 18.1 | 13.0 |
| Average daytime temperature (°C) | 1.5 | 3.4 | 6.2 | 14.5 | 21.7 | 26.5 | 27.6 | 26.6 | 23.4 | 15.5 | 8.3 | 5.3 |
| Average temperature (°C) | -2.0 | -1.7 | 1.4 | 8.6 | 14.9 | 20.3 | 22.6 | 21.7 | 18.8 | 11.7 | 4.0 | 2.1 |
| Average night temperature (°C) | -4.5 | -5.5 | -2.3 | 3.5 | 9.6 | 14.9 | 18.1 | 17.6 | 15.5 | 8.7 | 0.8 | -0.2 |
| Absolute minimum temperature (°C) | -23.5 | -22.5 | -12.3 | -2.6 | 0.7 | 7.5 | 13.9 | 11.9 | 10.1 | -2.1 | -11.5 | -7.9 |
| 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) | 3.6 | 7.3 | 6.7 | 8.4 | 10.8 | 12.1 | 12.1 | 11.1 | 8.4 | 7.1 | 6.8 | 3.8 |
| Precipitation (mm) | 58 | 94 | 86 | 100 | 35 | 25 | 67 | 116 | 100 | 96 | 48 | 67 |
| Sunny days | 12 | 17 | 10 | 16 | 21 | 20 | 12 | 15 | 12 | 13 | 21 | 14 |
| Rainy days | 9 | 8 | 12 | 14 | 10 | 10 | 19 | 16 | 18 | 17 | 8 | 15 |
| Snow days | 10 | 3 | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 |
The best time to visit Williams Bay during the most sunny months:
The largest precipitation sum in Williams Bay is at