Grand Marsh Weather Forecast

    • 58
    • 80

    Slight Chance Thunderstorms

    • 58
    • 77

    Chance Thunderstorms

    • 59
    • 77

    Chance Thunderstorms

    • 58
    • 78

    Chance Thunderstorms

    • 57
    • 77

    Chance Rain Showers

    • 53
    • 73

    Partly Sunny

Today 18 Sep Adams

Partly sunny. A slight chance of Showers and Thunderstorms in the afternoon. Highs around 80. East Winds around 5 Mph. Chance of rain 20 percent.

Tonight 18 Sep Adams

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the upper 50s. East Winds 5 to 10 Mph.

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Grand Marsh Temperature Statistics

September Temperature

New Lisbon Mauston Airport (21.7 miles)

  • Lowest 8 September, 2025

    38.7 °F

  • Average September

    61.4 °F

  • Highest 15 September, 2025

    84.6 °F

Climate (2020–Present)

New Lisbon Mauston Airport (21.7 miles)

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  • Average Low 2020–2025

    37.6 °F

  • Average 2020–2025

    47.8 °F

  • Average High 2020–2025

    57.5 °F
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