Grass Lake Weather Forecast

    • 47
    • 67

    Increasing Clouds

    • 40
    • 66

    Partly Sunny

    • 37
    • 59

    Mostly Sunny

    • 41
    • 61

    Partly Sunny

    • 43
    • 62

    Chance Rain Showers

    • 46
    • 67

    Partly Sunny

Today 8 May Dane

Partly sunny. Highs in the upper 60s. Southwest Winds up to 10 Mph.

Tonight 8 May Dane

Mostly clear. Areas of frost. Near steady temperature in the upper 30s. South Winds up to 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grass Lake Temperature Statistics

May Temperature

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

  • Lowest 2 May, 2026

    28.7 °F

  • Average May

    50.7 °F

  • Highest 4 May, 2026

    79.6 °F

Climate (2021–Present)

Madison, Dane County Regional-Truax Field (17.4 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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