Average annual temperature is 6.7 °C
Absolute maximum temperature: 33.3 °C
Absolute minimum temperature: -17.0 °C
Number of sunny days: 222 days
Number of rainy days: 78 days
Number of snow days: 65 days
Look at detailed online map of Grantsville
* Weather data for Grantsville 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) | 3.1 | 3.7 | 3.3 | 19.1 | 22.4 | 25.2 | 33.3 | 29.2 | 26.1 | 22.0 | 17.1 | 10.6 |
| Average daytime temperature (°C) | -1.7 | -0.3 | -1.0 | 7.4 | 15.9 | 19.3 | 29.2 | 24.7 | 20.2 | 15.7 | 8.2 | 5.6 |
| Average temperature (°C) | -5.5 | -4.4 | -4.4 | 2.3 | 10.0 | 13.4 | 22.7 | 18.6 | 14.0 | 8.8 | 3.1 | 1.1 |
| Average night temperature (°C) | -8.8 | -7.8 | -7.5 | -2.2 | 3.9 | 7.1 | 14.9 | 12.4 | 8.4 | 3.5 | -1.3 | -2.8 |
| Absolute minimum temperature (°C) | -15.1 | -16.3 | -17.0 | -13.2 | -3.3 | 1.2 | 10.9 | 7.9 | 1.2 | -6.6 | -11.8 | -11.3 |
| 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 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.8 | 10.7 | 12.0 | 13.2 | 14.3 | 14.8 | 14.6 | 13.7 | 12.4 | 11.2 | 10.1 | 9.5 |
| 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) | 6.0 | 8.1 | 8.7 | 11.8 | 12.6 | 13.0 | 13.2 | 11.8 | 10.6 | 9.6 | 8.6 | 7.8 |
| Precipitation (mm) | 84 | 54 | 77 | 11 | 48 | 24 | 10 | 78 | 41 | 7 | 10 | 8 |
| Sunny days | 10 | 16 | 9 | 25 | 10 | 15 | 28 | 19 | 19 | 24 | 23 | 24 |
| Rainy days | 2 | 0 | 8 | 0 | 17 | 15 | 3 | 12 | 11 | 7 | 1 | 2 |
| Snow days | 19 | 12 | 14 | 5 | 4 | 0 | 0 | 0 | 0 | 0 | 6 | 5 |
The best time to visit Grantsville during the most sunny months:
The largest precipitation sum in Grantsville is at