Average annual temperature is 9.2 °C
Absolute maximum temperature: 35.5 °C
Absolute minimum temperature: -26.4 °C
Number of sunny days: 194 days
Number of rainy days: 142 days
Number of snow days: 29 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) | 3.0 | 6.1 | 12.3 | 26.6 | 31.5 | 32.4 | 33.0 | 35.5 | 35.2 | 29.5 | 18.6 | 11.5 |
| Average daytime temperature (°C) | -3.0 | -0.8 | 3.3 | 12.5 | 22.9 | 28.8 | 27.9 | 28.1 | 25.3 | 15.0 | 8.1 | 4.8 |
| Average temperature (°C) | -6.6 | -6.2 | -2.0 | 6.6 | 16.6 | 22.6 | 22.1 | 22.4 | 19.8 | 10.6 | 3.1 | 0.6 |
| Average night temperature (°C) | -9.6 | -10.9 | -6.5 | 2.3 | 10.8 | 16.9 | 16.7 | 17.8 | 15.4 | 7.0 | -0.8 | -2.2 |
| Absolute minimum temperature (°C) | -23.5 | -26.4 | -17.5 | -5.9 | 0.0 | 10.2 | 12.9 | 12.1 | 6.8 | -5.5 | -13.7 | -9.0 |
| 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 | 9.0 |
| Daylight mean duration (h) | 9.3 | 10.4 | 11.9 | 13.5 | 14.8 | 15.5 | 15.2 | 14.0 | 12.5 | 11.0 | 9.6 | 8.9 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 8.0 |
| Sunshine mean duration (h) | 3.8 | 6.9 | 7.0 | 8.0 | 11.4 | 12.8 | 12.5 | 11.5 | 9.3 | 7.3 | 6.0 | 4.8 |
| Precipitation (mm) | 59 | 73 | 60 | 123 | 75 | 85 | 102 | 67 | 150 | 97 | 7 | 55 |
| Sunny days | 19 | 18 | 15 | 13 | 18 | 14 | 13 | 18 | 12 | 15 | 20 | 19 |
| Rainy days | 5 | 5 | 10 | 15 | 13 | 16 | 18 | 13 | 18 | 13 | 7 | 9 |
| Snow days | 7 | 5 | 6 | 2 | 0 | 0 | 0 | 0 | 0 | 3 | 3 | 3 |
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