Average annual temperature is 12.0 °C
Absolute maximum temperature: 35.7 °C
Absolute minimum temperature: -19.8 °C
Number of sunny days: 193 days
Number of rainy days: 159 days
Number of snow days: 13 days
Look at detailed online map of Castleton
* Weather data for 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) | 15.8 | 13.8 | 21.9 | 26.4 | 33.1 | 33.7 | 35.6 | 35.7 | 32.5 | 28.7 | 20.3 | 14.9 |
| Average daytime temperature (°C) | 3.5 | 6.6 | 9.1 | 17.9 | 25.2 | 29.4 | 28.9 | 28.1 | 25.3 | 17.6 | 10.3 | 7.1 |
| Average temperature (°C) | -0.8 | 0.8 | 3.5 | 10.6 | 18.5 | 23.0 | 23.4 | 22.8 | 19.9 | 12.9 | 5.2 | 3.2 |
| Average night temperature (°C) | -3.7 | -3.4 | -0.5 | 4.8 | 12.1 | 16.6 | 18.3 | 18.3 | 15.3 | 9.0 | 1.0 | 0.6 |
| Absolute minimum temperature (°C) | -19.8 | -17.5 | -12.3 | -2.5 | 2.3 | 8.9 | 14.1 | 11.2 | 9.8 | -2.6 | -11.2 | -8.6 |
| 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 | 10.6 | 11.9 | 13.3 | 14.5 | 15.1 | 14.8 | 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) | 3.6 | 7.2 | 6.7 | 9.4 | 11.2 | 12.8 | 12.4 | 11.1 | 9.6 | 7.4 | 7.4 | 4.1 |
| Precipitation (mm) | 54 | 78 | 90 | 75 | 40 | 44 | 99 | 128 | 73 | 67 | 26 | 69 |
| Sunny days | 15 | 17 | 15 | 15 | 19 | 21 | 13 | 14 | 14 | 12 | 23 | 15 |
| Rainy days | 9 | 9 | 15 | 15 | 12 | 9 | 18 | 17 | 16 | 18 | 6 | 15 |
| Snow days | 7 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 |
The best time to visit Castleton during the most sunny months:
The largest precipitation sum in Castleton is at