Fontana-on-Geneva Lake Weather Forecast

    • 59
    • 74

    Rain Showers

    • 64
    • 76

    Chance Thunderstorms

    • 56
    • 79

    Rain Showers

    • 55
    • 69

    Rain Showers

    • 53
    • 73

    Chance Rain Showers

    • 52
    • 78

    Rain Showers

Today 12 Apr Walworth

Warmer, breezy. Mostly cloudy. Chance of light Showers and Thunderstorms late in the morning and early Afternoon, then light Showers likely and chance of Thunderstorms late in the afternoon. Highs in the mid 70s. Southwest Winds 20 to 25 Mph with Gusts to around 40 Mph. Chance of precipitation 70 percent.

Tonight 12 Apr Walworth

Warmer, cloudy. Rain Showers and slight chance of Thunderstorms in the Evening, then light rain Showers likely late in the evening. Patchy fog after midnight. Lows in the upper 50s. Southwest Winds 10 to 20 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

    42.9 °F

  • Highest 8 April, 2026

    69.8 °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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