Lake Mendota Weather Forecast

    • 65
    • 80

    Chance Thunderstorms

    • 62
    • 82

    Mostly Sunny

    • 58
    • 81

    Mostly Sunny

    • 61
    • 81

    Partly Sunny

    • 65
    • 80

    Chance Rain Showers

    • 68
    • 83

    Chance Rain Showers

Today 25 Aug Dane

Partly sunny. Patchy fog in the morning. Highs in the lower 80s. Southwest Winds up to 10 Mph.

Tonight 25 Aug Dane

Partly cloudy. A 50 percent chance of light Showers and Thunderstorms after midnight. Lows in the mid 60s. South Winds 5 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Mendota Temperature Statistics

August Temperature

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

  • Lowest 20 August, 2026

    53.7 °F

  • Average August

    71.6 °F

  • Highest 10 August, 2026

    85.6 °F

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

    49.8 °F

  • Average High 2021–2026

    59.1 °F
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