Average annual temperature is 18.5 °C
Absolute maximum temperature: 38.2 °C
Absolute minimum temperature: -3.1 °C
Number of sunny days: 190 days
Number of rainy days: 175 days
Look at detailed online map of Williston
* Weather data for Williston 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) | 22.3 | 27.0 | 29.0 | 30.0 | 33.5 | 33.6 | 36.5 | 38.2 | 32.9 | 28.5 | 26.6 | 22.6 |
| Average daytime temperature (°C) | 15.9 | 19.6 | 21.4 | 24.3 | 26.0 | 30.0 | 33.6 | 33.7 | 28.6 | 23.7 | 18.2 | 15.1 |
| Average temperature (°C) | 10.5 | 13.9 | 15.1 | 18.0 | 20.5 | 24.2 | 28.0 | 27.7 | 23.0 | 18.2 | 12.5 | 9.9 |
| Average night temperature (°C) | 6.3 | 9.5 | 9.4 | 12.5 | 15.5 | 19.3 | 23.0 | 22.7 | 18.0 | 13.3 | 8.1 | 5.8 |
| Absolute minimum temperature (°C) | -3.1 | -1.0 | -0.8 | 5.0 | 8.7 | 13.9 | 19.6 | 20.3 | 14.3 | 7.6 | -1.0 | -2.4 |
| 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 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 14.3 | 14.1 | 13.4 | 12.4 | 11.3 | 10.4 | 10.0 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 6.1 | 7.5 | 8.6 | 9.6 | 9.5 | 10.9 | 11.1 | 11.3 | 10.7 | 8.7 | 7.3 | 6.5 |
| Precipitation (mm) | 115 | 98 | 95 | 153 | 101 | 99 | 108 | 130 | 43 | 91 | 63 | 127 |
| Sunny days | 14 | 18 | 19 | 15 | 11 | 12 | 7 | 12 | 17 | 26 | 18 | 21 |
| Rainy days | 17 | 10 | 12 | 15 | 20 | 18 | 24 | 19 | 13 | 5 | 12 | 10 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Williston during the most sunny months:
The largest precipitation sum in Williston is at