Mandan Lake Weather Forecast

    • 2
    • 43

    Snow

    • 0
    • 9

    Chance Snow

    • 5
    • 40

    Chance Snow

    • 1
    • 14

    Partly Sunny

    • 9
    • 26

    Mostly Cloudy

    • 8
    • 30

    Mostly Cloudy

Today 17 Dec Oliver

Mostly cloudy. A chance of rain in the afternoon. Highs in the lower 40s. South Winds 10 to 15 Mph with Gusts up to 25 Mph, becoming southwest 15 to 20 Mph with Gusts up to 40 Mph in the afternoon. Chance of rain 30 percent.

Tonight 17 Dec Oliver

Mostly cloudy. Lows around 20. Temperature rising into the in the upper 20s after midnight. South Winds 5 to 10 Mph with Gusts up to 20 Mph.

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Mandan Lake Temperature Statistics

December Temperature

HAZEN (18.6 miles)

  • Lowest 7 December, 2025

    -18.4 °F

  • Average December

    12.5 °F

  • Highest 9 December, 2025

    39.2 °F

Climate (2020–Present)

HAZEN (18.6 miles)

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  • Average Low 2020–2025

    30.1 °F

  • Average 2020–2025

    43.1 °F

  • Average High 2020–2025

    55.1 °F
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