Average annual temperature is 21.7 °C
Absolute maximum temperature: 38.7 °C
Absolute minimum temperature: -0.6 °C
Number of sunny days: 148 days
Number of rainy days: 217 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) | 27.6 | 28.5 | 30.1 | 33.3 | 34.5 | 35.3 | 35.9 | 38.7 | 34.1 | 31.8 | 29.9 | 26.5 |
| Average daytime temperature (°C) | 21.0 | 24.8 | 25.8 | 29.1 | 30.0 | 31.7 | 33.0 | 34.7 | 32.0 | 27.6 | 23.3 | 19.9 |
| Average temperature (°C) | 14.7 | 17.9 | 19.4 | 22.5 | 23.4 | 25.8 | 27.6 | 28.7 | 25.7 | 21.8 | 17.6 | 14.9 |
| Average night temperature (°C) | 9.9 | 13.4 | 14.5 | 17.0 | 18.2 | 21.4 | 23.6 | 24.1 | 21.3 | 17.3 | 13.5 | 11.4 |
| Absolute minimum temperature (°C) | -0.6 | 5.4 | 4.3 | 10.4 | 12.9 | 17.6 | 21.6 | 22.5 | 16.0 | 8.4 | 3.0 | 2.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 14.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 10.5 | 11.2 | 12.0 | 12.9 | 13.6 | 14.0 | 13.8 | 13.2 | 12.3 | 11.5 | 10.7 | 10.3 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 8.4 | 9.0 | 9.9 | 10.0 | 10.9 | 10.7 | 11.0 | 11.3 | 10.1 | 9.2 | 6.7 | 6.8 |
| Precipitation (mm) | 56 | 57 | 50 | 67 | 74 | 171 | 109 | 78 | 129 | 51 | 88 | 108 |
| Sunny days | 16 | 18 | 15 | 10 | 11 | 6 | 1 | 5 | 8 | 23 | 17 | 18 |
| Rainy days | 15 | 10 | 16 | 20 | 20 | 24 | 30 | 26 | 22 | 8 | 13 | 13 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Williston is at