Average annual temperature is 14.3 °C
Absolute maximum temperature: 36.2 °C
Absolute minimum temperature: -7.4 °C
Number of sunny days: 197 days
Number of rainy days: 168 days
Look at detailed online map of Castle Rock
* Weather data for Castle Rock 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) | 19.2 | 23.3 | 27.6 | 30.6 | 28.9 | 30.7 | 36.2 | 36.1 | 34.1 | 28.6 | 25.6 | 19.5 |
| Average daytime temperature (°C) | 11.0 | 14.5 | 15.2 | 21.8 | 23.1 | 26.7 | 31.7 | 30.3 | 26.2 | 21.5 | 14.7 | 11.3 |
| Average temperature (°C) | 5.7 | 8.2 | 8.4 | 14.4 | 17.0 | 20.3 | 24.9 | 23.8 | 20.0 | 14.7 | 8.0 | 5.5 |
| Average night temperature (°C) | 2.2 | 3.3 | 3.0 | 7.8 | 11.8 | 14.9 | 19.1 | 18.6 | 15.1 | 9.5 | 3.0 | 1.5 |
| Absolute minimum temperature (°C) | -4.9 | -7.4 | -5.9 | 0.5 | 5.1 | 10.3 | 16.0 | 13.3 | 11.2 | 3.2 | -5.6 | -4.5 |
| 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 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.7 | 14.4 | 13.6 | 12.4 | 11.2 | 10.2 | 9.7 |
| 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) | 5.9 | 6.8 | 8.1 | 9.8 | 10.4 | 10.7 | 12.3 | 10.6 | 9.6 | 8.9 | 8.1 | 6.3 |
| Precipitation (mm) | 77 | 85 | 83 | 109 | 121 | 132 | 82 | 75 | 102 | 34 | 50 | 119 |
| Sunny days | 15 | 16 | 16 | 16 | 12 | 13 | 10 | 15 | 17 | 23 | 26 | 18 |
| Rainy days | 16 | 12 | 15 | 14 | 19 | 17 | 21 | 16 | 13 | 8 | 4 | 13 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Castle Rock during the most sunny months:
The largest precipitation sum in Castle Rock is at