Average annual temperature is 13.5 °C
Absolute maximum temperature: 32.6 °C
Absolute minimum temperature: -8.7 °C
Number of sunny days: 164 days
Number of rainy days: 195 days
Number of snow days: 6 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) | 20.7 | 23.5 | 24.0 | 29.6 | 28.5 | 32.5 | 32.6 | 31.5 | 31.1 | 27.7 | 23.7 | 19.0 |
| Average daytime temperature (°C) | 10.3 | 13.7 | 13.4 | 20.4 | 22.6 | 26.8 | 29.2 | 27.7 | 24.7 | 19.9 | 13.7 | 11.0 |
| Average temperature (°C) | 5.1 | 6.9 | 7.0 | 13.3 | 16.4 | 20.4 | 23.7 | 22.4 | 19.3 | 14.5 | 7.4 | 5.9 |
| Average night temperature (°C) | 1.7 | 2.1 | 2.0 | 7.3 | 10.7 | 14.7 | 19.1 | 18.0 | 14.8 | 10.2 | 2.7 | 2.3 |
| Absolute minimum temperature (°C) | -6.8 | -8.7 | -7.7 | -0.2 | 3.3 | 9.6 | 14.6 | 12.3 | 9.3 | 1.3 | -6.8 | -4.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 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) | 4.4 | 6.8 | 7.4 | 8.7 | 9.8 | 11.0 | 11.6 | 10.6 | 9.4 | 7.6 | 7.3 | 5.0 |
| Precipitation (mm) | 89 | 90 | 85 | 76 | 62 | 53 | 110 | 69 | 96 | 65 | 44 | 75 |
| Sunny days | 7 | 15 | 15 | 19 | 16 | 12 | 7 | 10 | 13 | 15 | 20 | 15 |
| Rainy days | 22 | 12 | 15 | 11 | 15 | 18 | 24 | 21 | 17 | 16 | 9 | 15 |
| Snow days | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The best time to visit Grantsville during the most sunny months:
The largest precipitation sum in Grantsville is at