Trempealeau Weather Forecast

    • 54
    • 82

    Becoming Sunny

    • 54
    • 79

    Sunny

    • 63
    • 82

    Partly Sunny

    • 52
    • 77

    Chance Rain Showers

    • 53
    • 71

    Rain Showers Likely

    • 54
    • 72

    Rain Showers Likely

Today 9 Sep Trempealeau

Areas of fog in the morning. Mostly sunny. Highs around 80. West Winds 5 to 10 Mph.

Tonight 9 Sep Trempealeau

Mostly cloudy with a slight chance of Showers and Thunderstorms. Patchy fog. Lows in the lower 60s. Light Winds. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Trempealeau Temperature Statistics

September Temperature

La Crosse - La Crosse Regional Airport (12.4 miles)

  • Lowest 6 September, 2026

    64.9 °F

  • Average September

    78.1 °F

  • Highest 1 September, 2026

    90.6 °F

Climate (2021–2026)

La Crosse - La Crosse Regional Airport (12.4 miles)

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  • Average Low 2021–2026

    40.9 °F

  • Average 2021–2026

    50.3 °F

  • Average High 2021–2026

    59.9 °F
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