Sweet Marsh State Wildlife Management Area Weather Forecast

    • 34
    • 41

    Dense Fog

    • 36
    • 44

    Mostly Cloudy

    • 6
    • 41

    Rain/Snow Likely

    • 5
    • 14

    Blustery

    • 13
    • 29

    Mostly Cloudy

    • 0
    • 22

    Mostly Cloudy

    • -4
    • 10

    Cold

Today 26 Dec Bremer

Mostly cloudy. Patchy fog. Near steady temperature in the upper 30s. Northwest Winds 5 to 10 Mph.

Tonight 26 Dec Bremer

Mostly cloudy. Widespread dense fog. Near steady temperature in the mid 30s. Southwest Winds around 5 Mph, becoming southeast after midnight.

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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

    19.2 °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

    38.5 °F

  • Average 2020–2025

    48.2 °F

  • Average High 2020–2025

    57.9 °F
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