Marion Weather Forecast

    • 49
    • 71

    Mostly Sunny

    • 44
    • 69

    Mostly Sunny

    • 46
    • 70

    Mostly Sunny

    • 54
    • 75

    Partly Sunny

    • 56
    • 78

    Mostly Cloudy

    • 56
    • 74

    Slight Chance Thunderstorms

Today 23 Aug Turner

Sunny. Highs in the lower 70s. Northwest Winds around 15 Mph with Gusts up to 25 Mph.

Tonight 23 Aug Turner

Clear. Lows in the upper 40s. North Winds 10 to 15 Mph, becoming northwest around 5 Mph after midnight.

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Marion Temperature Statistics

August Temperature

Sioux Falls, Foss Field (27.3 miles)

  • Lowest 13 August, 2025

    55.7 °F

  • Average August

    74.2 °F

  • Highest 19 August, 2025

    89.7 °F

Climate (2020–Present)

Sioux Falls, Foss Field (27.3 miles)

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  • Average Low 2020–2025

    38.8 °F

  • Average 2020–2025

    49.8 °F

  • Average High 2020–2025

    60.6 °F
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