Average annual temperature is 13.5 °C
Absolute maximum temperature: 35.2 °C
Absolute minimum temperature: -10.0 °C
Number of sunny days: 181 days
Number of rainy days: 180 days
Number of snow days: 4 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) | 16.2 | 20.8 | 20.2 | 30.1 | 29.5 | 34.6 | 34.8 | 33.0 | 35.2 | 27.2 | 21.5 | 16.8 |
| Average daytime temperature (°C) | 8.7 | 10.0 | 11.4 | 20.2 | 22.6 | 26.9 | 30.2 | 28.8 | 25.1 | 20.1 | 12.1 | 9.3 |
| Average temperature (°C) | 4.9 | 5.0 | 6.0 | 13.8 | 16.1 | 20.6 | 24.6 | 23.5 | 20.1 | 14.5 | 6.9 | 5.2 |
| Average night temperature (°C) | 1.8 | 0.9 | 1.4 | 8.8 | 10.1 | 15.5 | 20.4 | 19.2 | 15.9 | 10.2 | 3.0 | 1.8 |
| Absolute minimum temperature (°C) | -3.8 | -10.0 | -4.8 | 1.3 | 4.2 | 11.8 | 18.2 | 15.7 | 10.5 | 4.7 | -4.9 | -2.9 |
| 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) | 9.7 | 10.7 | 12.0 | 13.3 | 14.4 | 14.9 | 14.7 | 13.7 | 12.5 | 11.2 | 10.0 | 9.4 |
| 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) | 4.7 | 6.7 | 7.4 | 9.2 | 11.1 | 10.6 | 11.8 | 10.5 | 8.2 | 8.5 | 7.7 | 4.8 |
| Precipitation (mm) | 108 | 58 | 61 | 129 | 31 | 105 | 120 | 69 | 119 | 61 | 81 | 180 |
| Sunny days | 13 | 17 | 14 | 16 | 19 | 11 | 10 | 14 | 14 | 16 | 22 | 15 |
| Rainy days | 18 | 9 | 16 | 14 | 12 | 19 | 21 | 17 | 16 | 15 | 8 | 15 |
| Snow days | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The best time to visit Castleton during the most sunny months:
The largest precipitation sum in Castleton is at