Hanna Weather Forecast

    • 30
    • 52

    Rain/Snow

    • 31
    • 49

    Chance Rain/Snow

    • 38
    • 60

    Mostly Sunny

    • 45
    • 71

    Mostly Sunny

    • 50
    • 76

    Mostly Sunny

    • 47
    • 74

    Chance Rain Showers

Today 21 May Northern Black Hills

Mostly cloudy. A slight chance of rain Showers in the Morning, then rain Showers likely with scattered Thunderstorms in the afternoon. Highs in the mid 50s. South Winds 5 to 10 Mph. Gusts up to 20 Mph in the afternoon. Chance of rain 70 percent.

Tonight 21 May Northern Black Hills

Rain Showers with a chance of Thunderstorms in the Evening, then rain and snow after midnight. Snow accumulation up to 1 inch. Lows in the lower 30s. Northwest Winds 5 to 10 Mph with Gusts up to 25 Mph. Chance of precipitation 90 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Hanna Temperature Statistics

May Temperature

Spearfish / Clyde Ice (15.5 miles)

  • Lowest 6 May, 2026

    26.6 °F

  • Average May

    53.9 °F

  • Highest 13 May, 2026

    87.8 °F

Climate (2021–Present)

Spearfish / Clyde Ice (15.5 miles)

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  • Average Low 2021–2026

    36.6 °F

  • Average 2021–2026

    48.1 °F

  • Average High 2021–2026

    59 °F
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