Mandan Weather Forecast

    • 57
    • 79

    Mostly Cloudy

    • 58
    • 81

    Slight Chance Thunderstorms

    • 50
    • 78

    Chance Rain Showers

    • 41
    • 64

    Partly Sunny

    • 44
    • 70

    Partly Sunny

    • 40
    • 65

    Mostly Sunny

    • 46
    • 69

    Mostly Sunny

Today 31 Aug Morton

Mostly cloudy. Highs in the upper 70s. South Winds 5 to 10 Mph.

Tonight 31 Aug Morton

Decreasing Clouds. A slight chance of Showers. Patchy fog after midnight. Lows in the upper 50s. Southwest Winds 5 to 10 Mph.

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Mandan Temperature Statistics

August Temperature

MANDAN (3.7 miles)

  • Lowest 23 August, 2025

    46.4 °F

  • Average August

    68.5 °F

  • Highest 20 August, 2025

    89.6 °F

Climate (2020–Present)

MANDAN (3.7 miles)

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  • Average Low 2020–2025

    32.5 °F

  • Average 2020–2025

    43.2 °F

  • Average High 2020–2025

    53.9 °F
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