Fontana-on-Geneva Lake Weather Forecast

    • 57
    • 72

    Rain Showers

    • 49
    • 68

    Chance Rain Showers

    • 46
    • 76

    Rain Showers

    • 31
    • 58

    Chance Rain Showers

    • 29
    • 49

    Partly Sunny

    • 45
    • 58

    Partly Sunny

    • 45
    • 69

    Mostly Sunny

Today 15 Apr Walworth

Showers likely and chance of Thunderstorms. Some Thunderstorms may produce heavy rainfall. Southwest Winds 10 to 15 Mph. Chance of precipitation 70 percent.

Tonight 15 Apr Walworth

Mostly cloudy. Rain Showers and chance of Thunderstorms through around Midnight, then chance of light rain Showers and slight chance of Thunderstorms after midnight. Patchy fog in the late evening and overnight. Some Thunderstorms may produce heavy rainfall. Lows in the mid 50s. Southwest Winds 5 to 10 Mph. Chance of precipitation 90 percent.

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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

    46.3 °F

  • Highest 12 April, 2026

    75.9 °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 °F

  • Average High 2021–2026

    59.8 °F
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