Custer State Park Weather Forecast

    • 57
    • 64

    Chance Rain Showers

    • 59
    • 77

    Chance Thunderstorms

    • 56
    • 71

    Thunderstorms Likely

    • 57
    • 74

    Chance Thunderstorms

    • 59
    • 79

    Slight Chance Thunderstorms

    • 58
    • 79

    Chance Thunderstorms

Today 13 Aug Central Black Hills

Cloudy with scattered Showers. Areas of fog. Scattered Thunderstorms this afternoon. Highs in the mid 60s. East Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 50 percent.

Tonight 13 Aug Central Black Hills

A slight chance of Thunderstorms in the evening. Cloudy with a chance of Showers. Areas of fog. Lows in the mid 50s. Southeast Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 40 percent.

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Custer State Park Temperature Statistics

August Temperature

Custer, Custer County Airport (8.7 miles)

  • Lowest 4 August, 2026

    42.7 °F

  • Average August

    68.7 °F

  • Highest 2 August, 2026

    93.7 °F

Climate (2021–2026)

Custer, Custer County Airport (8.7 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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