Average annual temperature is 6.9 °C
Absolute maximum temperature: 34.6 °C
Absolute minimum temperature: -26.1 °C
Number of sunny days: 161 days
Number of rainy days: 153 days
Number of snow days: 51 days
Look at detailed online map of Town of Keystone
* Weather data for Town of Keystone 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) | 2.5 | 6.6 | 6.0 | 21.7 | 31.8 | 32.1 | 32.5 | 30.3 | 34.6 | 29.1 | 16.9 | 10.0 |
| Average daytime temperature (°C) | -3.5 | -2.1 | 1.2 | 7.7 | 20.1 | 25.3 | 25.6 | 25.1 | 22.0 | 12.6 | 5.3 | 3.7 |
| Average temperature (°C) | -6.3 | -6.9 | -3.0 | 2.5 | 12.7 | 17.9 | 19.7 | 19.1 | 16.9 | 8.9 | 1.1 | -0.2 |
| Average night temperature (°C) | -8.8 | -10.8 | -6.5 | -1.7 | 7.1 | 11.9 | 14.7 | 14.4 | 13.1 | 5.9 | -2.1 | -2.9 |
| Absolute minimum temperature (°C) | -23.8 | -26.1 | -13.2 | -9.3 | -1.6 | 5.1 | 11.4 | 7.9 | 5.3 | -5.7 | -14.3 | -10.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 |
| Daylight mean duration (h) | 9.1 | 10.3 | 11.9 | 13.6 | 15.0 | 15.8 | 15.4 | 14.1 | 12.6 | 10.9 | 9.4 | 8.7 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 | 8.0 |
| Sunshine mean duration (h) | 2.9 | 6.6 | 6.4 | 6.7 | 11.4 | 12.4 | 12.3 | 10.8 | 7.9 | 5.6 | 4.8 | 4.2 |
| Precipitation (mm) | 74 | 80 | 75 | 170 | 42 | 100 | 54 | 78 | 183 | 76 | 20 | 64 |
| Sunny days | 15 | 14 | 11 | 11 | 17 | 17 | 10 | 17 | 8 | 10 | 18 | 13 |
| Rainy days | 2 | 4 | 7 | 14 | 14 | 13 | 21 | 14 | 22 | 20 | 10 | 12 |
| Snow days | 14 | 10 | 13 | 5 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 6 |
The best time to visit Town of Keystone during the most sunny months:
Months with the longest average daylight duration in Town of Keystone:
The largest precipitation sum in Town of Keystone is at