Sweet Marsh State Wildlife Management Area Weather Forecast

    • 24
    • 38

    Mostly Cloudy

    • 31
    • 37

    Cloudy

    • 34
    • 40

    Cloudy

    • 32
    • 42

    Mostly Cloudy

    • 15
    • 45

    Mostly Cloudy

    • 9
    • 24

    Partly Sunny

Today 23 Dec Bremer

Partly sunny. Highs in the upper 30s. Northwest Winds 5 to 10 Mph.

Tonight 23 Dec Bremer

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the mid 20s. East Winds 5 to 10 Mph.

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Sweet Marsh State Wildlife Management Area Temperature Statistics

December Temperature

Oelwein Municipal Airport (16.2 miles)

  • Lowest 4 December, 2025

    -11.2 °F

  • Average December

    17 °F

  • Highest 9 December, 2025

    39.2 °F

Climate (2020–Present)

Oelwein Municipal Airport (16.2 miles)

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  • Average Low 2020–2025

    38.4 °F

  • Average 2020–2025

    48.2 °F

  • Average High 2020–2025

    57.9 °F
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