French Island Weather Forecast

    • 69
    • 92

    Partly Sunny

    • 68
    • 88

    Chance Thunderstorms

    • 67
    • 87

    Chance Thunderstorms

    • 68
    • 84

    Chance Thunderstorms

    • 66
    • 85

    Partly Sunny

    • 64
    • 85

    Partly Sunny

Today 31 Aug La Crosse

Partly sunny. A slight chance of Showers and Thunderstorms this afternoon. Warmer with Highs in the lower 90s. Southwest Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 100 this afternoon.

Tonight 31 Aug La Crosse

Partly cloudy. A slight chance of Showers in the evening. Humid with Lows in the upper 60s. West Winds around 5 Mph in the Evening, becoming light and variable. Chance of rain 20 percent. Heat index Values in the mid 90s early in the evening.

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French Island Temperature Statistics

August Temperature

La Crosse - La Crosse Regional Airport (1.2 miles)

  • Lowest 20 August, 2026

    54.6 °F

  • Average August

    72.4 °F

  • Highest 10 August, 2026

    87.7 °F

Climate (2021–2026)

La Crosse - La Crosse Regional Airport (1.2 miles)

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  • Average Low 2021–2026

    40.8 °F

  • Average 2021–2026

    50.2 °F

  • Average High 2021–2026

    59.8 °F
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