City of Spearfish Weather Forecast

    • 46
    • 68

    Mostly Sunny

    • 59
    • 79

    Partly Sunny

    • 56
    • 81

    Partly Sunny

    • 58
    • 80

    Partly Sunny

    • 59
    • 80

    Chance Rain Showers

    • 56
    • 78

    Slight Chance Thunderstorms

Today 6 Sep Northern Foothills

Sunny. Near steady temperature in the upper 60s. Northeast Winds 5 to 10 Mph.

Tonight 6 Sep Northern Foothills

Clear in the Evening, then becoming partly cloudy. Lows in the mid 40s. Southeast Winds 5 to 10 Mph with Gusts up to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

City of Spearfish Temperature Statistics

September Temperature

Spearfish / Clyde Ice (3.1 miles)

  • Lowest 1 September, 2025

    46.4 °F

  • Average September

    63.1 °F

  • Highest 1 September, 2025

    82.4 °F

Climate (2020–Present)

Spearfish / Clyde Ice (3.1 miles)

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  • Average Low 2020–2025

    36 °F

  • Average 2020–2025

    47.4 °F

  • Average High 2020–2025

    58.1 °F
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