Keystone Weather Forecast

    • 30
    • 48

    Becoming Sunny

    • 44
    • 55

    Mostly Cloudy

    • 51
    • 76

    Chance Rain Showers

    • 47
    • 71

    Chance Rain Showers

    • 40
    • 66

    Rain/Snow Likely

    • 37
    • 53

    Rain Showers Likely

    • 40
    • 61

    Partly Sunny

Today 9 Apr Central Black Hills

Mostly sunny. Highs in the mid 40s to lower 50s. Northeast Winds 5 to 10 Mph with Gusts up to 30 Mph.

Tonight 9 Apr Central Black Hills

Mostly clear. Lows in the upper 20s. East Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming southwest after midnight.

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Keystone Temperature Statistics

April Temperature

Custer, Custer County Airport (14.9 miles)

  • Lowest 7 April, 2026

    21 °F

  • Average April

    36 °F

  • Highest 7 April, 2026

    60.1 °F

Climate (2021–Present)

Custer, Custer County Airport (14.9 miles)

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  • Average Low 2021–2026

    33.6 °F

  • Average 2021–2026

    45.3 °F

  • Average High 2021–2026

    56.8 °F
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