Grass Lake Weather Forecast

    • 48
    • 59

    Rain Showers

    • 51
    • 66

    Slight Chance Rain Showers

    • 57
    • 64

    Rain Showers

    • 54
    • 68

    Rain Showers

    • 48
    • 65

    Chance Rain Showers

    • 42
    • 61

    Chance Rain Showers

Today 31 Oct Dane

Light rain Showers likely. Highs in the upper 50s. Southeast Winds 5 to 10 Mph. Chance of Showers 70 percent.

Tonight 31 Oct Dane

Cloudy. A 20 percent chance of light rain Showers in the evening. Lows in the upper 40s. Southeast Winds up to 5 Mph.

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Grass Lake Temperature Statistics

October Temperature

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

  • Lowest 17 October, 2026

    29.6 °F

  • Average October

    58.2 °F

  • Highest 12 October, 2026

    85.6 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    39.9 °F

  • Average 2021–2026

    49.8 °F

  • Average High 2021–2026

    59.2 °F
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