Lake Onalaska Weather Forecast

    • 32
    • 40

    Partly Sunny

    • 32
    • 40

    Chance Rain

    • 26
    • 37

    Chance Rain/Snow

    • 16
    • 30

    Chance Snow

    • 16
    • 24

    Partly Sunny

    • 26
    • 36

    Mostly Sunny

Today 7 Jan La Crosse

Areas of freezing fog with patchy fog this morning. Mostly sunny. Highs in the lower 40s. South Winds around 5 Mph.

Tonight 7 Jan La Crosse

Partly cloudy in the Evening, then becoming mostly cloudy. Patchy fog after midnight. Lows in the lower 30s. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Onalaska Temperature Statistics

January Temperature

La Crosse - La Crosse Regional Airport (2.5 miles)

  • Lowest 1 January, 2026

    5 °F

  • Average January

    19.4 °F

  • Highest 5 January, 2026

    36 °F

Climate (2021–Present)

La Crosse - La Crosse Regional Airport (2.5 miles)

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  • Average Low 2021–2026

    41 °F

  • Average 2021–2026

    50.3 °F

  • Average High 2021–2026

    59.8 °F
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