Sweet Marsh State Wildlife Management Area Weather Forecast

    • 46
    • 69

    Increasing Clouds

    • 55
    • 70

    Mostly Cloudy

    • 44
    • 67

    Rain Showers

    • 40
    • 60

    Partly Sunny

    • 39
    • 61

    Partly Sunny

    • 39
    • 61

    Partly Sunny

Today 25 Apr Bremer

Mostly sunny. Highs in the upper 60s. Northeast Winds 5 to 10 Mph, becoming east in the afternoon.

Tonight 25 Apr Bremer

Clear. Near steady temperature in the mid 40s. Northeast Winds around 5 Mph.

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Sweet Marsh State Wildlife Management Area Temperature Statistics

April Temperature

Oelwein Municipal Airport (16.2 miles)

  • Lowest 7 April, 2026

    23 °F

  • Average April

    47.1 °F

  • Highest 17 April, 2026

    80.6 °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

    58.2 °F
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