Lake Geneva Weather Forecast

    • 52
    • 83

    Decreasing Clouds

    • 55
    • 83

    Mostly Sunny

    • 57
    • 86

    Mostly Sunny

    • 53
    • 81

    Partly Sunny

    • 57
    • 79

    Mostly Cloudy

    • 59
    • 79

    Chance Rain Showers

Today 16 Sep Clinton

Mostly sunny. Patchy fog in the morning. Highs in the lower 80s. Light Winds.

Tonight 16 Sep Clinton

Mostly clear. Lows in the lower 50s. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Geneva Temperature Statistics

September Temperature

Capital Region International Airport (3.7 miles)

  • Lowest 8 September, 2025

    39 °F

  • Average September

    60.6 °F

  • Highest 12 September, 2025

    79 °F

Climate (2020–Present)

Capital Region International Airport (3.7 miles)

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  • Average Low 2020–2025

    42.1 °F

  • Average 2020–2025

    51 °F

  • Average High 2020–2025

    60 °F
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