Average annual temperature is 12.2 °C
Absolute maximum temperature: 34.5 °C
Absolute minimum temperature: -15.9 °C
Number of sunny days: 173 days
Number of rainy days: 188 days
Number of snow days: 4 days
Look at detailed online map of Gillette
* Weather data for Gillette 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) | 18.4 | 19.1 | 15.6 | 31.5 | 29.6 | 34.5 | 33.7 | 30.7 | 34.4 | 27.8 | 19.4 | 15.3 |
| Average daytime temperature (°C) | 8.1 | 8.0 | 10.1 | 18.5 | 22.0 | 26.0 | 29.8 | 27.4 | 24.0 | 19.0 | 10.7 | 8.5 |
| Average temperature (°C) | 4.0 | 2.7 | 4.4 | 12.1 | 15.3 | 19.6 | 23.7 | 22.0 | 18.9 | 13.7 | 5.5 | 4.2 |
| Average night temperature (°C) | 0.5 | -1.7 | -0.1 | 6.8 | 8.9 | 14.3 | 18.9 | 17.7 | 14.9 | 9.6 | 1.3 | 0.8 |
| Absolute minimum temperature (°C) | -5.0 | -15.9 | -5.2 | -1.1 | 3.1 | 8.5 | 15.0 | 14.3 | 8.7 | 4.7 | -5.5 | -5.9 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.3 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 4.7 | 6.8 | 7.4 | 8.8 | 11.9 | 10.4 | 11.6 | 10.2 | 7.9 | 7.8 | 7.5 | 4.9 |
| Precipitation (mm) | 119 | 47 | 114 | 118 | 37 | 92 | 165 | 104 | 229 | 63 | 74 | 212 |
| Sunny days | 14 | 18 | 11 | 15 | 20 | 9 | 9 | 13 | 14 | 15 | 20 | 15 |
| Rainy days | 17 | 8 | 19 | 15 | 11 | 21 | 22 | 18 | 16 | 16 | 10 | 15 |
| Snow days | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The best time to visit Gillette during the most sunny months:
The largest precipitation sum in Gillette is at