Mandan Lake Weather Forecast

    • 41
    • 65

    Increasing Clouds

    • 47
    • 68

    Rain Showers

    • 43
    • 75

    Rain Showers

    • 43
    • 68

    Partly Sunny

    • 42
    • 71

    Chance Rain Showers

    • 46
    • 76

    Mostly Sunny

Today 12 Sep Oliver

Increasing Clouds. Highs in the mid 60s. Northwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 12 Sep Oliver

Mostly cloudy. Lows in the lower 40s. North Winds around 5 Mph in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mandan Lake Temperature Statistics

September Temperature

HAZEN (18.6 miles)

  • Lowest 1 September, 2026

    46.4 °F

  • Average September

    70.3 °F

  • Highest 7 September, 2026

    95 °F

Climate (2021–2026)

HAZEN (18.6 miles)

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  • Average Low 2021–2026

    30.4 °F

  • Average 2021–2026

    43.2 °F

  • Average High 2021–2026

    55 °F
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