Dewey Weather Forecast

    • 35
    • 55

    Rain

    • 34
    • 45

    Rain

    • 42
    • 50

    Chance Rain

    • 47
    • 73

    Chance Rain

    • 45
    • 78

    Chance Rain

    • 37
    • 62

    Rain Likely

Today 23 Apr Southern Black Hills

Mostly cloudy with isolated Showers and Thunderstorms. Near steady temperature in the upper 40s. East Winds 10 to 20 Mph with Gusts up to 30 Mph. Chance of rain 20 percent.

Tonight 23 Apr Southern Black Hills

Mostly cloudy. A slight chance of rain Showers in the Evening, then rain likely with a chance of snow after midnight. Little or no snow accumulation. Lows in the mid 30s. East Winds 10 to 20 Mph with Gusts up to 30 Mph. Chance of precipitation 70 percent.

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Dewey Temperature Statistics

April Temperature

Custer, Custer County Airport (24.9 miles)

  • Lowest 5 April, 2025

    14.8 °F

  • Average April

    39.7 °F

  • Highest 11 April, 2025

    73.7 °F

Climate (2020–Present)

Custer, Custer County Airport (24.9 miles)

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  • Average Low 2020–2025

    33.1 °F

  • Average 2020–2025

    44.8 °F

  • Average High 2020–2025

    56.2 °F
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