Average annual temperature is 14.5 °C
Absolute maximum temperature: 40.0 °C
Absolute minimum temperature: -10.6 °C
Number of sunny days: 203 days
Number of rainy days: 159 days
Number of snow days: 3 days
Look at detailed online map of Castle Rock (historical)
* Weather data for Castle Rock (historical) 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) | 17.8 | 19.7 | 24.0 | 28.3 | 31.8 | 39.6 | 38.1 | 40.0 | 35.1 | 30.6 | 26.8 | 17.9 |
| Average daytime temperature (°C) | 8.5 | 11.6 | 13.0 | 21.0 | 26.2 | 30.5 | 32.1 | 31.1 | 28.8 | 20.9 | 14.8 | 10.7 |
| Average temperature (°C) | 3.1 | 4.8 | 6.6 | 13.3 | 19.3 | 23.6 | 25.7 | 25.0 | 21.7 | 15.3 | 8.5 | 5.8 |
| Average night temperature (°C) | -0.5 | 0.1 | 2.1 | 7.4 | 13.4 | 17.7 | 20.5 | 20.5 | 16.2 | 10.7 | 3.9 | 2.5 |
| Absolute minimum temperature (°C) | -10.6 | -10.5 | -7.5 | 1.0 | 5.6 | 12.0 | 16.2 | 14.4 | 12.0 | -1.8 | -5.3 | -4.8 |
| 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 | 14.5 | 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) | 5.5 | 7.7 | 6.9 | 10.3 | 11.2 | 12.5 | 11.2 | 10.2 | 10.4 | 7.7 | 7.7 | 6.0 |
| Precipitation (mm) | 60 | 85 | 133 | 31 | 69 | 45 | 105 | 138 | 49 | 68 | 13 | 71 |
| Sunny days | 19 | 19 | 15 | 22 | 17 | 18 | 12 | 13 | 15 | 17 | 21 | 15 |
| Rainy days | 10 | 9 | 15 | 8 | 14 | 12 | 19 | 18 | 15 | 14 | 9 | 16 |
| Snow days | 2 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Castle Rock (historical) during the most sunny months:
The largest precipitation sum in Castle Rock (historical) is at