City of Spearfish Weather Forecast

    • 55
    • 77

    Mostly Sunny

    • 59
    • 87

    Mostly Sunny

    • 48
    • 79

    Partly Sunny

    • 51
    • 72

    Rain Showers Likely

    • 47
    • 72

    Rain Showers Likely

    • 44
    • 65

    Breezy

Today 9 Sep Northern Foothills

Sunny. Highs in the upper 70s. Northwest Winds 5 to 10 Mph with Gusts up to 25 Mph.

Tonight 9 Sep Northern Foothills

Clear. Lows in the lower 50s. Southwest Winds 5 to 10 Mph. Gusts up to 20 Mph in the evening.

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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, 2026

    53.6 °F

  • Average September

    77.3 °F

  • Highest 4 September, 2026

    96.8 °F

Climate (2021–2026)

Spearfish / Clyde Ice (3.1 miles)

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  • Average Low 2021–2026

    36.7 °F

  • Average 2021–2026

    48.2 °F

  • Average High 2021–2026

    59.1 °F
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