Guidinger Reservoir Weather Forecast

    • 51
    • 84

    Chance Rain Showers

    • 54
    • 74

    Chance Thunderstorms

    • 50
    • 68

    Chance Rain Showers

    • 47
    • 67

    Slight Chance Thunderstorms

    • 48
    • 69

    Partly Sunny

    • 49
    • 75

    Partly Sunny

Today 15 Sep Butte

Mostly sunny this Morning, then partly cloudy with isolated Showers and Thunderstorms this afternoon. Some Thunderstorms may produce gusty Winds this afternoon. Highs in the lower 80s. West Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 15 Sep Butte

Partly cloudy. Scattered Showers and Thunderstorms in the Evening, then a slight chance of Showers and Thunderstorms after midnight. Some Thunderstorms may produce gusty Winds in the evening. Lows in the lower 50s. Northwest Winds 10 to 15 Mph. Chance of rain 40 percent.

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Guidinger Reservoir Temperature Statistics

September Temperature

Spearfish / Clyde Ice (24.2 miles)

  • Lowest 5 September, 2025

    39.2 °F

  • Average September

    64.2 °F

  • Highest 11 September, 2025

    91.4 °F

Climate (2020–Present)

Spearfish / Clyde Ice (24.2 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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