Marsh Wetlands State Nature Preserve Weather Forecast

    • 57
    • 82

    Mostly Sunny

    • 51
    • 79

    Partly Sunny

    • 59
    • 80

    Partly Sunny

    • 62
    • 84

    Mostly Cloudy

    • 61
    • 80

    Chance Rain Showers

    • 58
    • 79

    Chance Rain Showers

Today 18 Sep Portage

Areas of fog in the morning. Mostly sunny. Highs in the lower 80s. Northwest Winds around 5 Mph.

Tonight 18 Sep Portage

Mostly clear. Lows in the upper 50s. Northwest Winds around 5 Mph in the Evening, becoming light and variable.

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Marsh Wetlands State Nature Preserve Temperature Statistics

September Temperature

Portage County Airport (5 miles)

  • Lowest 8 September, 2025

    37.8 °F

  • Average September

    60.9 °F

  • Highest 15 September, 2025

    83.1 °F

Climate (2020–Present)

Portage County Airport (5 miles)

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  • Average Low 2020–2025

    40.7 °F

  • Average 2020–2025

    50.1 °F

  • Average High 2020–2025

    60 °F
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