Sweet Marsh State Wildlife Management Area Weather Forecast

    • 58
    • 77

    Becoming Sunny

    • 63
    • 78

    Mostly Sunny

    • 62
    • 78

    Mostly Sunny

    • 58
    • 76

    Mostly Sunny

    • 58
    • 73

    Partly Sunny

    • 61
    • 75

    Partly Sunny

Today 19 Aug Bremer

Mostly sunny. Highs in the upper 70s. Northeast Winds around 5 Mph.

Tonight 19 Aug Bremer

Partly cloudy in the Evening, then clearing. Lows in the upper 50s. Northeast Winds around 5 Mph.

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Sweet Marsh State Wildlife Management Area Temperature Statistics

August Temperature

Oelwein Municipal Airport (16.2 miles)

  • Lowest 16 August, 2026

    62.6 °F

  • Average August

    73.8 °F

  • Highest 11 August, 2026

    84.2 °F

Climate (2021–2026)

Oelwein Municipal Airport (16.2 miles)

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  • Average Low 2021–2026

    38.4 °F

  • Average 2021–2026

    48.1 °F

  • Average High 2021–2026

    57.9 °F
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