Bismark Lake Weather Forecast

    • 6
    • 24

    Gradual Clearing

    • 18
    • 33

    Mostly Sunny

    • 16
    • 39

    Snow Likely

    • 9
    • 26

    Partly Sunny

    • 22
    • 36

    Slight Chance Snow

    • 24
    • 38

    Chance Snow

Today 30 Nov Central Black Hills

Becoming mostly cloudy. Highs in the lower 20s. West Winds around 5 Mph, becoming south with Gusts up to 20 Mph this afternoon.

Tonight 30 Nov Central Black Hills

Mostly cloudy with a slight chance of snow in the Evening, then partly cloudy after midnight. Lows 5 to 10 above. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of snow 20 percent. Wind chill Values around 10 below after midnight.

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Bismark Lake Temperature Statistics

November Temperature

Custer, Custer County Airport (5.6 miles)

  • Lowest 26 November, 2025

    12.9 °F

  • Average November

    40.7 °F

  • Highest 2 November, 2025

    66.9 °F

Climate (2020–Present)

Custer, Custer County Airport (5.6 miles)

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  • Average Low 2020–2025

    33.3 °F

  • Average 2020–2025

    44.9 °F

  • Average High 2020–2025

    56.3 °F
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