Fontana-on-Geneva Lake Weather Forecast

    • 44
    • 67

    Becoming Sunny

    • 64
    • 74

    Rain Showers Likely

    • 57
    • 79

    Rain Showers

    • 61
    • 72

    Rain Showers Likely

    • 59
    • 75

    Chance Rain Showers

    • 60
    • 74

    Chance Rain Showers

    • 58
    • 77

    Rain Showers Likely

Today 13 Sep Walworth

Mostly sunny. West Winds 5 to 10 Mph.

Tonight 13 Sep Walworth

Mostly clear. Lows in the mid 40s. West Winds up to 5 Mph through around midnight becoming calm.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fontana-on-Geneva Lake Temperature Statistics

September Temperature

Burlington Municipal Airport (16.2 miles)

  • Lowest 7 September, 2026

    54.5 °F

  • Average September

    72.9 °F

  • Highest 2 September, 2026

    96.3 °F

Climate (2021–2026)

Burlington Municipal Airport (16.2 miles)

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  • Average Low 2021–2026

    39.7 °F

  • Average 2021–2026

    50.1 °F

  • Average High 2021–2026

    59.9 °F
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