Average annual temperature is 13.5 °C
Absolute maximum temperature: 34.5 °C
Absolute minimum temperature: -8.6 °C
Number of sunny days: 178
Number of rainy days: 182
Number of snow days: 5
Average annual precipitation: 986 mm
Look at detailed online map of Williamstown
* Weather data for Williamstown United States is based on climate observations for 2023 year
| Jan | Feb | Mar | Apr | Maggio | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 16.6 | 22.7 | 23.7 | 27.5 | 30.9 | 33.1 | 32.8 | 34.5 | 34.1 | 29.7 | 24.9 | 16.3 |
| Average daytime temperature (°C) | 8.6 | 12.9 | 13 | 18.9 | 23.4 | 27.4 | 30.3 | 29.4 | 27.3 | 20.1 | 13.3 | 9.7 |
| Average temperature (°C) | 4.2 | 6.1 | 6.5 | 12.2 | 16.9 | 20.9 | 24.2 | 23.2 | 20.5 | 14.4 | 7.4 | 4.9 |
| Average night temperature (°C) | 1 | 1.3 | 1.8 | 6.6 | 11.1 | 15.4 | 19.5 | 18.1 | 15 | 10.1 | 3.2 | 1.6 |
| Absolute minimum temperature (°C) | -5.9 | -8.6 | -6.6 | -0.8 | 2.8 | 10.2 | 15.1 | 12.2 | 10.2 | -1.4 | -7.3 | -6.9 |
| Jan | Feb | Mar | Apr | Maggio | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.2 | 11.3 | 12.6 | 13.8 | 14.7 | 14.9 | 14.8 | 14.2 | 13 | 11.8 | 10.6 | 9.7 |
| Daylight mean duration (h) | 9.8 | 10.8 | 12 | 13.2 | 14.3 | 14.8 | 14.6 | 13.6 | 12.5 | 11.2 | 10.1 | 9.5 |
| Daylight minimum duration (h) | 9.5 | 10.3 | 11.3 | 12.6 | 13.8 | 14.7 | 14.2 | 13.1 | 11.9 | 10.6 | 9.7 | 9.5 |
| Sunshine mean duration (h) | 5.3 | 7.5 | 7.5 | 9.7 | 10 | 10.9 | 11.5 | 11.4 | 10.4 | 7.5 | 7.5 | 5.8 |
| Precipitation (mm) | 127 | 55 | 132 | 89 | 58 | 80 | 104 | 76 | 73 | 79 | 41 | 73 |
| Sunny days | 6 | 17 | 16 | 15 | 19 | 14 | 7 | 15 | 14 | 18 | 23 | 14 |
| Rainy days | 23 | 11 | 13 | 15 | 12 | 16 | 24 | 16 | 16 | 13 | 7 | 16 |
| Snow days | 2 | 2 | 1 |
The best time to visit Williamstown during the most sunny months:
The largest precipitation sum in Williamstown is at