Bismark Lake Weather Forecast

    • 31
    • 51

    Sunny

    • 27
    • 51

    Mostly Sunny

    • 32
    • 50

    Partly Sunny

    • 29
    • 50

    Partly Sunny

    • 13
    • 40

    Chance Snow

    • 6
    • 24

    Chance Snow

Today 29 Jan Central Black Hills

Sunny. Highs around 50. West Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 29 Jan Central Black Hills

Clear. Lows around 30. West Winds 5 to 10 Mph.

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Bismark Lake Temperature Statistics

January Temperature

Custer, Custer County Airport (5.6 miles)

  • Lowest 20 January, 2025

    -15.3 °F

  • Average January

    18.3 °F

  • Highest 16 January, 2025

    44.7 °F

Climate (2020–Present)

Custer, Custer County Airport (5.6 miles)

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  • Average Low 2020–2025

    33.1 °F

  • Average 2020–2025

    44.7 °F

  • Average High 2020–2025

    55.9 °F
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