Castle Rock Weather Forecast

    • 55
    • 80

    Chance Thunderstorms

    • 54
    • 77

    Rain Showers

    • 50
    • 67

    Rain Showers

    • 49
    • 77

    Chance Thunderstorms

    • 50
    • 80

    Partly Sunny

    • 53
    • 82

    Mostly Cloudy

    • 50
    • 79

    Chance Rain Showers

Today 22 Sep Elbert/Central and East Douglas Counties Above 6000 Feet

Mostly cloudy with a 30 percent chance of Showers. Highs in the mid to upper 60s.

Tonight 22 Sep Elbert/Central and East Douglas Counties Above 6000 Feet

Mostly cloudy. Chance of Thunderstorms early in the Evening, then a chance of Showers during the late evening hours. Lows in the lower to mid 50s. South Winds 10 to 15 Mph with Gusts up to 20 Mph. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Castle Rock Temperature Statistics

September Temperature

Denver - Centennial Airport (12.4 miles)

  • Lowest 20 September, 2026

    48.9 °F

  • Average September

    70.9 °F

  • Highest 4 September, 2026

    91.7 °F

Climate (2021–2026)

Denver - Centennial Airport (12.4 miles)

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  • Average Low 2021–2026

    39.5 °F

  • Average 2021–2026

    52.7 °F

  • Average High 2021–2026

    66.1 °F
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