Custer State Park Weather Forecast

    • 46
    • 72

    Mostly Sunny

    • 44
    • 74

    Mostly Sunny

    • 49
    • 72

    Partly Sunny

    • 39
    • 61

    Rain Showers Likely

    • 34
    • 46

    Chance Rain Showers

    • 39
    • 54

    Slight Chance Thunderstorms

Today 14 May Central Black Hills

Mostly sunny. Highs around 70. Northwest Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 14 May Central Black Hills

Clear. Lows in the lower 40s. Northwest Winds 10 to 15 Mph. Gusts up to 30 Mph in the evening.

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Custer State Park Temperature Statistics

May Temperature

Custer, Custer County Airport (8.7 miles)

  • Lowest 6 May, 2026

    17.7 °F

  • Average May

    46 °F

  • Highest 11 May, 2026

    81 °F

Climate (2021–Present)

Custer, Custer County Airport (8.7 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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