Mandan Lake Weather Forecast

    • 64
    • 88

    Decreasing Clouds

    • 65
    • 92

    Mostly Sunny

    • 63
    • 87

    Rain Showers Likely

    • 59
    • 85

    Chance Thunderstorms

    • 51
    • 81

    Mostly Sunny

    • 49
    • 78

    Partly Sunny

Today 4 Sep Oliver

Sunny. Highs in the upper 80s. East Winds around 10 Mph with Gusts up to 20 Mph, increasing to southeast with Gusts up to 30 Mph in the afternoon.

Tonight 4 Sep Oliver

Mostly cloudy. Areas of fog. Lows in the mid 50s. Light and variable Winds.

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  • Temperature Real-Time

Mandan Lake Temperature Statistics

September Temperature

HAZEN (18.6 miles)

  • Lowest 1 September, 2026

    46.4 °F

  • Average September

    63.4 °F

  • Highest 1 September, 2026

    78.8 °F

Climate (2021–2026)

HAZEN (18.6 miles)

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  • Average Low 2021–2026

    30.4 °F

  • Average 2021–2026

    43.1 °F

  • Average High 2021–2026

    55 °F
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