Lake Mendota Weather Forecast

    • 72
    • 90

    Slight Chance Thunderstorms

    • 71
    • 89

    Rain Showers Likely

    • 69
    • 86

    Rain Showers Likely

    • 67
    • 86

    Chance Thunderstorms

    • 65
    • 83

    Partly Sunny

    • 63
    • 82

    Slight Chance Thunderstorms

Today 1 Sep Dane

Very warm and humid. Partly sunny. Patchy fog in the morning. A 20 percent chance of light Showers and Thunderstorms in the afternoon. Highs around 90. Southwest Winds up to 10 Mph. Highest heat index Readings 95 to 97 in the afternoon.

Tonight 1 Sep Dane

Partly cloudy. A 20 percent chance of light Showers and Thunderstorms after midnight. Lows in the lower 70s. Southwest Winds up to 5 Mph.

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Lake Mendota Temperature Statistics

September Temperature

Madison, Dane County Regional-Truax Field (4.3 miles)

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Climate (2021–2026)

Madison, Dane County Regional-Truax Field (4.3 miles)

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  • Average Low 2021–2026

    39.9 °F

  • Average 2021–2026

    49.7 °F

  • Average High 2021–2026

    59.1 °F
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