Fontana-on-Geneva Lake Weather Forecast

    • 42
    • 67

    Increasing Clouds

    • 49
    • 64

    Mostly Cloudy

    • 49
    • 70

    Rain Showers

    • 43
    • 59

    Mostly Cloudy

    • 38
    • 58

    Partly Sunny

    • 36
    • 55

    Partly Sunny

    • 34
    • 55

    Partly Sunny

Today 25 Apr Walworth

Sunny. Northeast Winds 5 to 10 Mph.

Tonight 25 Apr Walworth

Partly cloudy until early morning then becoming mostly cloudy. Lows in the lower 40s. East Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fontana-on-Geneva Lake Temperature Statistics

April Temperature

Burlington Municipal Airport (16.2 miles)

  • Lowest 7 April, 2026

    22.8 °F

  • Average April

    48.6 °F

  • Highest 17 April, 2026

    78.4 °F

Climate (2021–Present)

Burlington Municipal Airport (16.2 miles)

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  • Average Low 2021–2026

    39.6 °F

  • Average 2021–2026

    50.1 °F

  • Average High 2021–2026

    59.9 °F
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