Average annual temperature is 14.0 °C
Absolute maximum temperature: 37.9 °C
Absolute minimum temperature: -9.0 °C
Number of sunny days: 195 days
Number of rainy days: 169 days
Number of snow days: 1 day
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) | 18.1 | 24.6 | 26.7 | 30.7 | 30.1 | 31.7 | 37.9 | 36.3 | 37.2 | 28.7 | 25.9 | 19.4 |
| Average daytime temperature (°C) | 9.8 | 12.7 | 13.8 | 22.3 | 23.0 | 27.4 | 32.4 | 30.8 | 26.9 | 21.4 | 13.5 | 10.4 |
| Average temperature (°C) | 5.0 | 6.4 | 7.2 | 14.7 | 16.6 | 20.5 | 25.2 | 24.0 | 20.6 | 14.9 | 7.0 | 4.9 |
| Average night temperature (°C) | 1.4 | 1.3 | 1.8 | 8.2 | 10.8 | 14.3 | 19.1 | 18.4 | 15.5 | 9.3 | 2.1 | 0.7 |
| Absolute minimum temperature (°C) | -4.3 | -9.0 | -5.7 | 1.0 | 4.4 | 9.5 | 15.2 | 12.7 | 10.0 | 3.0 | -6.1 | -6.1 |
| 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 | 10.8 | 12.0 | 13.2 | 14.3 | 14.8 | 14.6 | 13.6 | 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) | 5.4 | 6.8 | 7.8 | 9.4 | 10.0 | 10.9 | 12.0 | 11.0 | 9.4 | 8.8 | 7.9 | 5.9 |
| Precipitation (mm) | 68 | 75 | 68 | 109 | 38 | 102 | 74 | 30 | 112 | 25 | 73 | 121 |
| Sunny days | 13 | 16 | 15 | 19 | 17 | 14 | 11 | 16 | 16 | 18 | 25 | 15 |
| Rainy days | 17 | 12 | 16 | 11 | 14 | 16 | 20 | 15 | 14 | 13 | 5 | 16 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Castleton during the most sunny months:
The largest precipitation sum in Castleton is at