French Island Weather Forecast

    • 60
    • 75

    Chance Rain Showers

    • 46
    • 67

    Chance Rain Showers

    • 43
    • 64

    Mostly Sunny

    • 48
    • 65

    Partly Sunny

    • 39
    • 62

    Mostly Sunny

    • 43
    • 60

    Partly Sunny

Today 30 Sep La Crosse

Mostly cloudy. A chance of Showers this Morning, then a slight chance of Showers this afternoon. Highs in the mid 70s. Southwest Winds around 5 Mph. Chance of rain 40 percent.

Tonight 30 Sep La Crosse

Cloudy with a 50 percent chance of Showers. Humid with Lows around 60. South Winds around 5 Mph in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

French Island Temperature Statistics

September Temperature

La Crosse - La Crosse Regional Airport (1.2 miles)

  • Lowest 23 September, 2026

    45 °F

  • Average September

    67.3 °F

  • Highest 1 September, 2026

    90.6 °F

Climate (2021–2026)

La Crosse - La Crosse Regional Airport (1.2 miles)

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  • Average Low 2021–2026

    40.9 °F

  • Average 2021–2026

    50.3 °F

  • Average High 2021–2026

    59.8 °F
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