Grass Lake Weather Forecast

    • 33
    • 54

    Decreasing Clouds

    • 47
    • 58

    Rain Showers Likely

    • 61
    • 72

    Rain Showers

    • 63
    • 77

    Rain Showers Likely

    • 58
    • 80

    Rain Showers

    • 50
    • 69

    Chance Rain Showers

Today 10 Apr Dane

Partly sunny until late afternoon then clearing. Highs in the lower 50s. Northwest Winds 5 to 10 Mph.

Tonight 10 Apr Dane

Clear. Lows in the lower 30s. Northeast Winds up to 5 Mph shifting to the southeast after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grass Lake Temperature Statistics

April Temperature

Madison, Dane County Regional-Truax Field (17.4 miles)

  • Lowest 7 April, 2026

    21 °F

  • Average April

    39.2 °F

  • Highest 5 April, 2026

    54.6 °F

Climate (2021–Present)

Madison, Dane County Regional-Truax Field (17.4 miles)

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  • Average Low 2021–2026

    39.9 °F

  • Average 2021–2026

    49.7 °F

  • Average High 2021–2026

    59 °F
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