Average annual temperature is 11.5 °C
Absolute maximum temperature: 39.0 °C
Absolute minimum temperature: -6.2 °C
Number of sunny days: 156 days
Number of rainy days: 208 days
Number of snow days: 1 day
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) | 14.3 | 14.8 | 18.4 | 30.6 | 32.0 | 29.9 | 34.4 | 39.0 | 31.9 | 27.9 | 16.1 | 16.1 |
| Average daytime temperature (°C) | 9.5 | 8.3 | 11.0 | 13.6 | 22.8 | 24.1 | 29.1 | 30.2 | 23.1 | 17.6 | 11.0 | 10.3 |
| Average temperature (°C) | 5.8 | 4.0 | 5.4 | 8.1 | 15.2 | 16.1 | 19.8 | 21.3 | 16.0 | 11.9 | 6.9 | 7.0 |
| Average night temperature (°C) | 3.0 | 1.3 | 2.0 | 4.5 | 9.7 | 10.1 | 12.4 | 14.9 | 11.4 | 8.3 | 4.2 | 4.5 |
| Absolute minimum temperature (°C) | -5.6 | -6.2 | -3.2 | -0.7 | 5.9 | 5.5 | 8.8 | 9.9 | 8.1 | -1.1 | -3.9 | -1.5 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 |
| Daylight mean duration (h) | 9.1 | 10.3 | 11.9 | 13.6 | 15.0 | 15.7 | 15.4 | 14.1 | 12.6 | 10.9 | 9.5 | 8.7 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 | 8.0 |
| Sunshine mean duration (h) | 3.3 | 4.4 | 6.2 | 5.8 | 10.7 | 12.0 | 13.1 | 11.4 | 8.2 | 6.4 | 5.0 | 3.2 |
| Precipitation (mm) | 120 | 95 | 126 | 190 | 32 | 32 | 4 | 20 | 81 | 103 | 175 | 278 |
| Sunny days | 6 | 8 | 5 | 5 | 17 | 18 | 26 | 21 | 14 | 16 | 13 | 7 |
| Rainy days | 25 | 19 | 26 | 25 | 14 | 12 | 5 | 10 | 16 | 15 | 17 | 24 |
| Snow days | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Castle Rock during the most sunny months:
Months with the longest average daylight duration in Castle Rock:
The largest precipitation sum in Castle Rock is at