Williams Bay Weather Forecast

    • 69
    • 88

    Chance Thunderstorms

    • 61
    • 80

    Decreasing Clouds

    • 59
    • 78

    Partly Sunny

    • 61
    • 80

    Partly Sunny

    • 70
    • 84

    Chance Thunderstorms

    • 62
    • 86

    Slight Chance Thunderstorms

    • 57
    • 77

    Slight Chance Rain Showers

Today 4 Sep Walworth

Partly sunny with a 20 percent chance of Showers and Thunderstorms. Heat index Readings 95 to 100. Southwest Winds up to 5 Mph.

Tonight 4 Sep Walworth

Partly cloudy. A 20 percent chance of light Showers and Thunderstorms until early morning. Patchy fog after midnight. Lows in the upper 60s. Northeast Winds up to 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Williams Bay Temperature Statistics

September Temperature

Burlington Municipal Airport (13.7 miles)

  • Lowest 1 September, 2026

    73 °F

  • Average September

    84.2 °F

  • Highest 2 September, 2026

    96.3 °F

Climate (2021–2026)

Burlington Municipal Airport (13.7 miles)

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  • Average Low 2021–2026

    39.7 °F

  • Average 2021–2026

    50.1 °F

  • Average High 2021–2026

    59.8 °F
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