Marshalltown Weather Forecast

    • 13
    • 36

    Decreasing Clouds

    • 25
    • 32

    Partly Sunny

    • 32
    • 43

    Mostly Cloudy

    • 29
    • 42

    Mostly Cloudy

    • 37
    • 47

    Mostly Cloudy

    • 32
    • 54

    Mostly Cloudy

Today 20 Dec Marshall

Partly cloudy. Highs in the mid 30s. Southwest Winds around 15 Mph, becoming northwest.

Tonight 20 Dec Marshall

Mostly clear. Lows around 13. Northwest Winds 5 to 10 Mph.

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Marshalltown Temperature Statistics

December Temperature

Marshalltown, Marshalltown Municipal Airport (3.7 miles)

  • Lowest 14 December, 2025

    -16.1 °F

  • Average December

    17.1 °F

  • Highest 9 December, 2025

    41 °F

Climate (2020–Present)

Marshalltown, Marshalltown Municipal Airport (3.7 miles)

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  • Average Low 2020–2025

    39.6 °F

  • Average 2020–2025

    50.3 °F

  • Average High 2020–2025

    60.9 °F
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