Average annual temperature is 9.1 °C
Absolute maximum temperature: 33.3 °C
Absolute minimum temperature: -31.7 °C
Number of sunny days: 121 days
Number of rainy days: 209 days
Number of snow days: 35 days
Look at detailed online map of Town of Castleton
* Weather data for Town of Castleton 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) | 8.4 | 13.9 | 13.1 | 28.6 | 31.9 | 33.3 | 31.7 | 26.8 | 30.4 | 27.7 | 16.7 | 12.7 |
| Average daytime temperature (°C) | 2.1 | 3.0 | 5.2 | 15.6 | 20.0 | 23.7 | 26.9 | 23.8 | 22.0 | 16.6 | 6.8 | 4.8 |
| Average temperature (°C) | -1.3 | -3.2 | 0.1 | 8.9 | 13.2 | 17.9 | 21.8 | 19.1 | 17.1 | 12.1 | 2.2 | 1.0 |
| Average night temperature (°C) | -4.4 | -8.8 | -4.5 | 3.6 | 6.8 | 13.1 | 17.9 | 15.1 | 13.1 | 8.7 | -1.0 | -1.8 |
| Absolute minimum temperature (°C) | -12.7 | -31.7 | -12.2 | -5.5 | 0.2 | 8.0 | 13.3 | 10.0 | 6.7 | 0.2 | -6.7 | -8.3 |
| 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 | 9.0 |
| Daylight mean duration (h) | 9.4 | 10.5 | 11.9 | 13.4 | 14.7 | 15.4 | 15.1 | 13.9 | 12.5 | 11.0 | 9.7 | 9.0 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 8.0 |
| Sunshine mean duration (h) | 3.2 | 5.9 | 6.1 | 7.8 | 11.4 | 9.9 | 10.6 | 10.2 | 8.4 | 6.0 | 6.0 | 3.9 |
| Precipitation (mm) | 101 | 63 | 94 | 106 | 78 | 153 | 236 | 188 | 58 | 156 | 61 | 143 |
| Sunny days | 7 | 10 | 10 | 13 | 16 | 8 | 4 | 5 | 14 | 10 | 13 | 11 |
| Rainy days | 14 | 12 | 14 | 17 | 15 | 22 | 27 | 26 | 16 | 21 | 12 | 13 |
| Snow days | 10 | 6 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 7 |
The best time to visit Town of Castleton during the most sunny months:
Months with the longest average daylight duration in Town of Castleton:
The largest precipitation sum in Town of Castleton is at