Delavan Lake Weather Forecast

    • 75
    • 91

    Slight Chance Thunderstorms

    • 69
    • 88

    Rain Showers Likely

    • 65
    • 82

    Chance Thunderstorms

    • 67
    • 81

    Slight Chance Thunderstorms

    • 67
    • 88

    Mostly Sunny

    • 69
    • 87

    Chance Thunderstorms

Today 23 Jul Walworth

Very warm and humid. Partly sunny with isolated light Showers and Thunderstorms in the Morning, then mostly sunny in the late morning and afternoon. Highs in the lower 90s. South Winds 10 to 15 Mph. Chance of precipitation 20 percent. Highest heat index Readings 103 to 108 in the late morning and afternoon.

Tonight 23 Jul Walworth

Mostly clear. Lows in the mid 70s. Southwest Winds around 10 Mph. Highest heat index Readings 97 to 102 in the evening.

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Delavan Lake Temperature Statistics

July Temperature

Burlington Municipal Airport (18 miles)

  • Lowest 18 July, 2025

    49.3 °F
  • Average July

    71.2 °F
  • Highest 3 July, 2025

    88.3 °F

Climate (2020–Present)

Burlington Municipal Airport (18 miles)

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  • Average Low 2020–2025

    39.4 °F
  • Average 2020–2025

    49.8 °F
  • Average High 2020–2025

    59.5 °F
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