Lake Geneva Weather Forecast

    • 20
    • 46

    Rain Showers

    • 19
    • 25

    Chance Snow Showers

    • 16
    • 37

    Chance Snow Showers

    • 14
    • 23

    Partly Sunny

    • 27
    • 33

    Mostly Cloudy

    • 26
    • 40

    Mostly Cloudy

Today 18 Dec Clinton

Rain Showers. Patchy fog. Highs in the mid 40s. South Winds 15 to 20 Mph. Gusts up to 40 Mph in the afternoon. Chance of rain 100 percent.

Tonight 18 Dec Clinton

Patchy fog in the evening. Rain Showers in the Evening, then snow Showers after midnight. Little or no snow accumulation. Lows around 20. Southwest Winds 15 to 20 Mph with Gusts to around 35 Mph. Chance of precipitation 90 percent.

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  • Temperature Forecast NOAA

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Lake Geneva Temperature Statistics

December Temperature

Capital Region International Airport (3.7 miles)

  • Lowest 8 December, 2025

    -0.9 °F

  • Average December

    21.3 °F

  • Highest 10 December, 2025

    35.1 °F

Climate (2020–Present)

Capital Region International Airport (3.7 miles)

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  • Average Low 2020–2025

    42 °F

  • Average 2020–2025

    51 °F

  • Average High 2020–2025

    60.1 °F
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