Lake Mendota Weather Forecast

    • 64
    • 80

    Rain Showers Likely

    • 43
    • 69

    Chance Rain Showers

    • 40
    • 63

    Partly Sunny

    • 44
    • 63

    Mostly Cloudy

    • 48
    • 67

    Slight Chance Rain Showers

    • 52
    • 74

    Partly Sunny

Today 18 May Dane

Mostly cloudy. A 20 percent chance of light Showers and Thunderstorms late in the morning. Highs in the upper 70s. Southwest Winds 10 to 15 Mph with Gusts to around 30 Mph.

Tonight 18 May Dane

Cloudy. Chance of light Showers and Thunderstorms late in the evening. Showers likely and chance of Thunderstorms after midnight. Lows in the mid 60s. South Winds 5 to 15 Mph with Gusts to around 30 Mph. Chance of precipitation 70 percent.

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Lake Mendota Temperature Statistics

May Temperature

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

  • Lowest 2 May, 2026

    28.7 °F

  • Average May

    53.2 °F

  • Highest 16 May, 2026

    82 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    40 °F

  • Average 2021–2026

    49.8 °F

  • Average High 2021–2026

    59.1 °F
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