Sweet Marsh State Wildlife Management Area Weather Forecast

    • 57
    • 83

    Partly Sunny

    • 59
    • 82

    Mostly Cloudy

    • 57
    • 82

    Mostly Cloudy

    • 59
    • 80

    Partly Sunny

    • 57
    • 82

    Partly Sunny

    • 57
    • 81

    Partly Sunny

Today 28 May Bremer

Mostly sunny. Highs in the lower 80s. East Winds around 10 Mph.

Tonight 28 May Bremer

Mostly cloudy. Lows in the upper 50s. East Winds 5 to 10 Mph.

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Sweet Marsh State Wildlife Management Area Temperature Statistics

May Temperature

Oelwein Municipal Airport (16.2 miles)

  • Lowest 6 May, 2026

    30.2 °F
  • Average May

    58.6 °F
  • Highest 25 May, 2026

    86 °F

Climate (2021–Present)

Oelwein Municipal Airport (16.2 miles)

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  • Average Low 2021–2026

    38.6 °F
  • Average 2021–2026

    48.4 °F
  • Average High 2021–2026

    58.2 °F
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