Average annual temperature is 12.8 °C
Absolute maximum temperature: 40.3 °C
Absolute minimum temperature: -16.0 °C
Number of sunny days: 264 days
Number of rainy days: 79 days
Number of snow days: 22 days
Look at detailed online map of Grand County
* Weather data for Grand County 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) | 9.9 | 9.8 | 13.4 | 27.6 | 30.3 | 33.3 | 40.3 | 35.9 | 34.7 | 28.1 | 21.9 | 9.3 |
| Average daytime temperature (°C) | 2.2 | 2.9 | 7.1 | 17.9 | 26.5 | 29.6 | 36.8 | 33.2 | 28.4 | 20.1 | 10.4 | 4.7 |
| Average temperature (°C) | -1.3 | -1.4 | 2.0 | 9.8 | 20.1 | 23.3 | 29.9 | 27.1 | 21.8 | 13.6 | 5.9 | 1.2 |
| Average night temperature (°C) | -5.0 | -5.8 | -2.3 | 3.6 | 13.4 | 16.4 | 21.9 | 20.4 | 14.8 | 7.8 | 1.7 | -2.0 |
| Absolute minimum temperature (°C) | -16.0 | -15.4 | -8.7 | -6.1 | 6.2 | 11.2 | 16.2 | 16.7 | 9.1 | -4.3 | -10.1 | -8.4 |
| 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 | 14.9 | 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) | 6.5 | 7.9 | 8.6 | 11.1 | 12.5 | 13.1 | 13.2 | 12.3 | 11.2 | 9.9 | 8.1 | 7.8 |
| Precipitation (mm) | 80 | 34 | 83 | 10 | 10 | 3 | 2 | 3 | 3 | 15 | 34 | 13 |
| Sunny days | 16 | 17 | 11 | 23 | 19 | 24 | 30 | 25 | 25 | 24 | 24 | 26 |
| Rainy days | 8 | 3 | 15 | 5 | 12 | 6 | 1 | 6 | 5 | 7 | 6 | 5 |
| Snow days | 7 | 8 | 5 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Grand County during the most sunny months:
The largest precipitation sum in Grand County is at