Castle Rock Weather Forecast
- 56
- 84
Chance Thunderstorms
- 56
- 82
Mostly Sunny
- 58
- 87
Mostly Sunny
- 57
- 90
Partly Sunny
- 57
- 84
Slight Chance Thunderstorms
- 53
- 85
Chance Thunderstorms
Today 8 Sep Elbert/Central and East Douglas Counties Above 6000 Feet
Mostly cloudy. Chance of Showers and slight chance of Thunderstorms early in the Afternoon, then a chance of Thunderstorms late in the afternoon. Some Thunderstorms may produce gusty Winds, then some Thunderstorms may produce gusty Winds and heavy rainfall late in the afternoon. Highs near 80. East Winds 10 to 15 Mph. Chance of rain 40 percent.
Tonight 8 Sep Elbert/Central and East Douglas Counties Above 6000 Feet
Mostly cloudy with a chance of Thunderstorms early in the Evening, then mostly cloudy with a slight chance of Thunderstorms during the late evening hours. Mostly clear after midnight. Some Thunderstorms may produce gusty Winds and heavy rainfall in the evening. Lows in the 50s. Chance of precipitation 50 percent.
Castle Rock Temperature Statistics
September Temperature
Denver - Centennial Airport (12.4 miles)
Lowest 2 September, 2026
57.7 °FAverage September
73.6 °FHighest 4 September, 2026
91.7 °F
Climate (2021–2026)
Denver - Centennial Airport (12.4 miles)
Average Low 2021–2026
39.5 °FAverage 2021–2026
52.7 °FAverage High 2021–2026
66.1 °F