Sweet Marsh State Wildlife Management Area Weather Forecast

    • 27
    • 49

    Becoming Sunny

    • 35
    • 50

    Partly Sunny

    • 42
    • 58

    Mostly Cloudy

    • 44
    • 61

    Mostly Cloudy

    • 30
    • 59

    Mostly Cloudy

    • 28
    • 46

    Partly Sunny

Today 22 Mar Bremer

Partly cloudy after Midnight, then becoming mostly cloudy. Much cooler with Highs around 50. North Winds 15 to 20 Mph. Gusts up to 40 Mph after midnight.

Tonight 22 Mar Bremer

Mostly clear. Cooler with Lows in the upper 20s. North Winds 15 to 20 Mph, Diminishing to 5 to 10 Mph after midnight.

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Sweet Marsh State Wildlife Management Area Temperature Statistics

March Temperature

Oelwein Municipal Airport (16.2 miles)

  • Lowest 16 March, 2026

    8.6 °F

  • Average March

    37.3 °F

  • Highest 9 March, 2026

    66.2 °F

Climate (2021–Present)

Oelwein Municipal Airport (16.2 miles)

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  • Average Low 2021–2026

    38.7 °F

  • Average 2021–2026

    48.4 °F

  • Average High 2021–2026

    58.1 °F
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