Marsh Wetlands State Nature Preserve Weather Forecast

    • 55
    • 87

    Thunderstorms

    • 43
    • 62

    Chance Rain Showers

    • 49
    • 65

    Partly Sunny

    • 55
    • 65

    Rain Showers

    • 57
    • 70

    Rain Showers Likely

    • 57
    • 75

    Chance Thunderstorms

Today 19 May Portage

Mostly cloudy with a slight chance of Showers this Morning, then partly cloudy with a chance of Showers and Thunderstorms this afternoon. Highs in the upper 80s. Southwest Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 30 percent.

Tonight 19 May Portage

Showers likely. Thunderstorms, mainly in the evening. Cooler with Lows in the upper 50s. Southwest Winds 10 to 15 Mph. Gusts up to 30 Mph in the evening. Chance of rain 90 percent.

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Marsh Wetlands State Nature Preserve Temperature Statistics

May Temperature

Portage County Airport (5 miles)

  • Lowest 2 May, 2026

    33.8 °F

  • Average May

    52.2 °F

  • Highest 17 May, 2026

    82.4 °F

Climate (2021–Present)

Portage County Airport (5 miles)

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  • Average Low 2021–2026

    40.4 °F

  • Average 2021–2026

    49.9 °F

  • Average High 2021–2026

    59.9 °F
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