Lake Onalaska Weather Forecast

    • 29
    • 38

    Mostly Cloudy

    • 32
    • 35

    Rain Likely

    • 33
    • 41

    Mostly Cloudy

    • 27
    • 44

    Mostly Cloudy

    • 8
    • 34

    Chance Snow

    • 8
    • 17

    Mostly Cloudy

    • 11
    • 28

    Mostly Cloudy

Today 24 Dec La Crosse

Cloudy with a chance of drizzle. Near steady temperature in the upper 30s. Southeast Winds 5 to 10 Mph.

Tonight 24 Dec La Crosse

Cloudy. Areas of very light drizzle this evening. Lows in the upper 20s. Northeast Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Onalaska Temperature Statistics

December Temperature

La Crosse - La Crosse Regional Airport (2.5 miles)

  • Lowest 14 December, 2025

    -11 °F

  • Average December

    18.5 °F

  • Highest 16 December, 2025

    39.9 °F

Climate (2020–Present)

La Crosse - La Crosse Regional Airport (2.5 miles)

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  • Average Low 2020–2025

    40.9 °F

  • Average 2020–2025

    50.2 °F

  • Average High 2020–2025

    59.8 °F
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