Lake Mendota Weather Forecast

    • 61
    • 82

    Becoming Sunny

    • 61
    • 87

    Slight Chance Thunderstorms

    • 55
    • 82

    Chance Thunderstorms

    • 53
    • 82

    Partly Sunny

    • 53
    • 79

    Partly Sunny

    • 52
    • 76

    Partly Sunny

Today 25 May Dane

Partly sunny late in the morning and early afternoon then clearing. Highs in the lower 80s. Southwest Winds 5 to 15 Mph.

Tonight 25 May Dane

Clear. Lows around 60. Southwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Mendota Temperature Statistics

May Temperature

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

  • Lowest 2 May, 2026

    28.7 °F

  • Average May

    55.3 °F

  • Highest 16 May, 2026

    83.6 °F

Climate (2021–Present)

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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