Fontana-on-Geneva Lake Weather Forecast

    • 68
    • 90

    Isolated Thunderstorms

    • 71
    • 89

    Chance Thunderstorms

    • 63
    • 89

    Chance Thunderstorms

    • 65
    • 84

    Partly Sunny

    • 65
    • 86

    Chance Rain Showers

    • 58
    • 82

    Mostly Sunny

Today 16 Jul Walworth

Warm and humid. Partly sunny. Areas of smoke in the morning. Isolated light Showers early in the afternoon. Isolated light Showers and Thunderstorms late in the afternoon. Highs in the upper 80s. Southeast Winds up to 10 Mph. Chance of precipitation 20 percent. Highest heat index Readings 95 to 96 in the afternoon.

Tonight 16 Jul Walworth

Partly cloudy. Isolated light Showers and Thunderstorms through around midnight. Areas of smoke through the night. Lows in the upper 60s. Southeast Winds up to 10 Mph. Chance of precipitation 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fontana-on-Geneva Lake Temperature Statistics

July Temperature

Burlington Municipal Airport (16.2 miles)

  • Lowest 7 July, 2026

    55.2 °F

  • Average July

    74.4 °F

  • Highest 1 July, 2026

    91.4 °F

Climate (2021–2026)

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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