Sweet Marsh State Wildlife Management Area Weather Forecast

    • 56
    • 79

    Chance Thunderstorms

    • 57
    • 75

    Partly Sunny

    • 61
    • 76

    Partly Sunny

    • 69
    • 81

    Mostly Cloudy

    • 73
    • 87

    Breezy

    • 71
    • 90

    Partly Sunny

Today 24 Jun Bremer

Mostly cloudy early this Morning, then clearing. A chance of Showers and Thunderstorms early this Morning, then a slight chance of Showers and Thunderstorms this afternoon. Highs in the upper 70s. Southwest Winds 5 to 10 Mph, becoming west 10 to 15 Mph this afternoon. Chance of rain 50 percent.

Tonight 24 Jun Bremer

Mostly clear in the Evening, then becoming partly cloudy. Lows in the mid 50s. Northwest Winds 10 to 15 Mph, Diminishing to around 5 Mph after midnight.

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Sweet Marsh State Wildlife Management Area Temperature Statistics

June Temperature

Oelwein Municipal Airport (16.2 miles)

  • Lowest 15 June, 2026

    48.2 °F

  • Average June

    67.8 °F

  • Highest 4 June, 2026

    86 °F

Climate (2021–2026)

Oelwein Municipal Airport (16.2 miles)

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  • Average Low 2021–2026

    38.8 °F

  • Average 2021–2026

    48.6 °F

  • Average High 2021–2026

    58.3 °F
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