Wind Cave National Park Weather Forecast

    • 51
    • 69

    Increasing Clouds

    • 55
    • 76

    Mostly Sunny

    • 56
    • 81

    Partly Sunny

    • 48
    • 70

    Chance Rain Showers

    • 50
    • 72

    Mostly Sunny

    • 52
    • 75

    Mostly Sunny

Today 19 Sep Southern Black Hills

Areas of fog in the morning. Mostly sunny. Highs in the lower 70s. West Winds 5 to 10 Mph.

Tonight 19 Sep Southern Black Hills

Partly cloudy. Lows around 50. Northeast Winds 5 to 10 Mph.

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Wind Cave National Park Temperature Statistics

September Temperature

Custer, Custer County Airport (12.4 miles)

  • Lowest 6 September, 2025

    32 °F

  • Average September

    60.1 °F

  • Highest 11 September, 2025

    82.9 °F

Climate (2020–Present)

Custer, Custer County Airport (12.4 miles)

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  • Average Low 2020–2025

    33.1 °F

  • Average 2020–2025

    44.7 °F

  • Average High 2020–2025

    56.2 °F
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