Grassy Lake State Wildlife Area Weather Forecast

    • -1
    • 11

    Increasing Clouds

    • 3
    • 13

    Partly Sunny

    • 3
    • 20

    Mostly Sunny

    • 15
    • 23

    Chance Snow

    • 11
    • 27

    Mostly Cloudy

    • 10
    • 24

    Mostly Cloudy

Today 29 Jan Columbia

Sunny. Highs around 12. Northwest Winds up to 10 Mph.

Tonight 29 Jan Columbia

Partly cloudy then becoming mostly cloudy late in the evening then becoming partly cloudy. Lows around 1 below. North Winds up to 10 Mph.

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Grassy Lake State Wildlife Area Temperature Statistics

January Temperature

Madison, Dane County Regional-Truax Field (20.5 miles)

  • Lowest 24 January, 2026

    -18.3 °F

  • Average January

    18.3 °F

  • Highest 9 January, 2026

    56.6 °F

Climate (2021–Present)

Madison, Dane County Regional-Truax Field (20.5 miles)

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  • Average Low 2021–2026

    39.8 °F

  • Average 2021–2026

    49.6 °F

  • Average High 2021–2026

    58.8 °F
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