Sweet Marsh State Wildlife Management Area Weather Forecast

    • 55
    • 68

    Mostly Cloudy

    • 56
    • 61

    Rain Showers

    • 56
    • 65

    Chance Rain Showers

    • 57
    • 68

    Mostly Cloudy

    • 57
    • 66

    Rain Showers

    • 56
    • 66

    Chance Rain Showers

Today 25 Sep Bremer

Mostly cloudy. Near steady temperature in the upper 60s. Southeast Winds 5 to 10 Mph.

Tonight 25 Sep Bremer

Mostly cloudy. Lows in the mid 50s. Southeast Winds 5 to 10 Mph.

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Sweet Marsh State Wildlife Management Area Temperature Statistics

September Temperature

Oelwein Municipal Airport (16.2 miles)

  • Lowest 23 September, 2026

    46.4 °F

  • Average September

    67 °F

  • Highest 4 September, 2026

    89.6 °F

Climate (2021–2026)

Oelwein Municipal Airport (16.2 miles)

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  • Average Low 2021–2026

    38.5 °F

  • Average 2021–2026

    48.1 °F

  • Average High 2021–2026

    57.9 °F
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