Average annual temperature is 11.5 °C
Absolute maximum temperature: 40.4 °C
Absolute minimum temperature: -15.8 °C
Number of sunny days: 205 days
Number of rainy days: 115 days
Number of snow days: 45 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) | 9.4 | 9.5 | 13.7 | 29.2 | 29.7 | 32.0 | 40.4 | 37.3 | 34.0 | 25.6 | 19.7 | 11.0 |
| Average daytime temperature (°C) | 2.1 | 2.2 | 6.7 | 15.4 | 23.4 | 25.7 | 36.4 | 31.5 | 27.6 | 18.1 | 9.5 | 4.4 |
| Average temperature (°C) | -1.6 | -2.2 | 2.1 | 8.4 | 17.4 | 19.8 | 28.9 | 25.0 | 20.5 | 11.9 | 5.1 | 1.2 |
| Average night temperature (°C) | -4.9 | -6.1 | -1.7 | 3.0 | 11.5 | 13.8 | 21.7 | 19.3 | 14.6 | 6.9 | 1.7 | -1.8 |
| Absolute minimum temperature (°C) | -15.8 | -14.3 | -8.2 | -8.4 | 3.3 | 10.1 | 17.3 | 14.9 | 7.0 | -3.6 | -6.2 | -7.5 |
| 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 | 14.7 | 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) | 5.0 | 7.7 | 7.8 | 9.7 | 11.3 | 11.9 | 13.1 | 11.6 | 10.6 | 9.0 | 7.0 | 6.8 |
| Precipitation (mm) | 108 | 37 | 99 | 46 | 20 | 22 | 4 | 40 | 26 | 19 | 49 | 14 |
| Sunny days | 7 | 13 | 6 | 17 | 15 | 13 | 28 | 22 | 20 | 25 | 19 | 20 |
| Rainy days | 11 | 4 | 14 | 9 | 16 | 17 | 3 | 9 | 10 | 6 | 10 | 6 |
| Snow days | 13 | 11 | 11 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 |
The best time to visit Grantsville during the most sunny months:
The largest precipitation sum in Grantsville is at