Grand Marsh Weather Forecast

    • 43
    • 60

    Chance Rain Showers

    • 42
    • 60

    Becoming Sunny

    • 43
    • 62

    Partly Sunny

    • 44
    • 63

    Mostly Cloudy

    • 43
    • 65

    Mostly Cloudy

    • 47
    • 64

    Chance Rain Showers

    • 49
    • 66

    Mostly Cloudy

Today 21 Sep Adams

Partly cloudy. Lows in the upper 40s. Highs in the upper 60s.

Tonight 21 Sep Adams

Mostly cloudy. A chance of rain Showers this Evening, then a slight chance of rain Showers after midnight. Lows in the lower 40s. Northeast Winds 5 to 10 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grand Marsh Temperature Statistics

September Temperature

New Lisbon Mauston Airport (21.7 miles)

  • Lowest 14 September, 2026

    39.9 °F

  • Average September

    67.1 °F

  • Highest 1 September, 2026

    89.6 °F

Climate (2021–2026)

New Lisbon Mauston Airport (21.7 miles)

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  • Average Low 2021–2026

    37.9 °F

  • Average 2021–2026

    48.1 °F

  • Average High 2021–2026

    57.8 °F
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