Harney Peak Weather Forecast

    • 55
    • 78

    Increasing Clouds

    • 59
    • 73

    Mostly Cloudy

    • 60
    • 82

    Slight Chance Thunderstorms

    • 57
    • 79

    Chance Thunderstorms

    • 52
    • 71

    Chance Thunderstorms

    • 55
    • 73

    Chance Thunderstorms

Today 21 Aug Central Black Hills

Partly cloudy. Highs in the mid 80s. Southeast Winds 5 to 10 Mph. Gusts up to 20 Mph in the afternoon.

Tonight 21 Aug Central Black Hills

Mostly clear in the Evening, then becoming partly cloudy. Lows in the upper 50s. Northeast Winds 5 to 10 Mph. Gusts up to 20 Mph in the evening.

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Harney Peak Temperature Statistics

August Temperature

Custer, Custer County Airport (9.9 miles)

  • Lowest 4 August, 2026

    42.7 °F

  • Average August

    67 °F

  • Highest 2 August, 2026

    93.7 °F

Climate (2021–2026)

Custer, Custer County Airport (9.9 miles)

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  • Average Low 2021–2026

    33.5 °F

  • Average 2021–2026

    45.3 °F

  • Average High 2021–2026

    56.9 °F
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