Harney Peak Weather Forecast

    • 36
    • 55

    Rain/Snow

    • 36
    • 50

    Chance Rain

    • 43
    • 60

    Mostly Sunny

    • 53
    • 72

    Mostly Sunny

    • 57
    • 82

    Partly Sunny

    • 54
    • 77

    Chance Thunderstorms

Today 21 May Central Black Hills

Mostly cloudy. Showers likely with a chance of Thunderstorms this afternoon. Highs in the upper 50s. South Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 70 percent.

Tonight 21 May Central Black Hills

Rain Showers with a chance of Thunderstorms in the Evening, then rain with a slight chance of snow after midnight. Little or no snow accumulation. Lows in the upper 30s. East Winds around 5 Mph, becoming north after midnight. Gusts up to 25 Mph.

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Harney Peak Temperature Statistics

May Temperature

Custer, Custer County Airport (9.9 miles)

  • Lowest 6 May, 2026

    17.7 °F

  • Average May

    47.4 °F

  • Highest 11 May, 2026

    81.6 °F

Climate (2021–Present)

Custer, Custer County Airport (9.9 miles)

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  • Average Low 2021–2026

    33.6 °F

  • Average 2021–2026

    45.4 °F

  • Average High 2021–2026

    56.9 °F
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