Lake Mendota Weather Forecast

    • 43
    • 55

    Increasing Clouds

    • 43
    • 74

    Partly Sunny

    • 55
    • 74

    Mostly Sunny

    • 58
    • 78

    Mostly Cloudy

    • 43
    • 68

    Chance Rain Showers

    • 42
    • 63

    Slight Chance Rain Showers

Today 20 Apr Dane

Sunny. Widespread frost in the morning. Highs in the mid 50s. South Winds up to 5 Mph increasing to 10 to 15 Mph in the afternoon.

Tonight 20 Apr Dane

Not as cool. Partly cloudy then becoming mostly cloudy late in the evening then becoming partly cloudy. Lows in the lower 40s. South Winds 5 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Mendota Temperature Statistics

April Temperature

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

  • Lowest 7 April, 2026

    21.7 °F

  • Average April

    49.7 °F

  • Highest 14 April, 2026

    78.7 °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

    49.7 °F

  • Average High 2021–2026

    59.1 °F
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