Castle Rock Weather Forecast

    • 52
    • 65

    Rain Showers Likely

    • 48
    • 57

    Rain Showers

    • 44
    • 64

    Chance Rain Showers

    • 47
    • 74

    Mostly Sunny

    • 48
    • 77

    Mostly Sunny

    • 49
    • 76

    Mostly Sunny

    • 50
    • 79

    Partly Sunny

Today 29 Sep Elbert/Central and East Douglas Counties Above 6000 Feet

Mostly sunny. Highs in the mid to upper 70s.

Tonight 29 Sep Elbert/Central and East Douglas Counties Above 6000 Feet

Slight chance of Showers in the Evening, then Showers likely after midnight. Lows near 50. Chance of rain 60 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

    49.6 °F

  • Average September

    69.3 °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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