Castle Rock Weather Forecast

    • 57
    • 73

    Chance Thunderstorms

    • 53
    • 66

    Chance Rain Showers

    • 54
    • 79

    Chance Rain Showers

    • 52
    • 72

    Chance Thunderstorms

    • 49
    • 72

    Chance Rain Showers

    • 50
    • 73

    Mostly Sunny

Today 13 Sep Butte

Partly cloudy. Highs in the mid 70s. Northeast Winds 10 to 15 Mph.

Tonight 13 Sep Butte

Partly cloudy in the Evening, then becoming mostly cloudy. A chance of Thunderstorms. A chance of Showers in the Evening, then Showers likely after midnight. Lows in the mid 50s. East Winds 5 to 10 Mph, becoming northwest after midnight. Chance of rain 60 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Castle Rock Temperature Statistics

September Temperature

Spearfish / Clyde Ice (37.9 miles)

  • Lowest 5 September, 2025

    39.2 °F

  • Average September

    63.8 °F

  • Highest 11 September, 2025

    91.4 °F

Climate (2020–Present)

Spearfish / Clyde Ice (37.9 miles)

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  • Average Low 2020–2025

    36.1 °F

  • Average 2020–2025

    47.4 °F

  • Average High 2020–2025

    58.2 °F
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