Sun Prairie Weather Forecast

    • 32
    • 36

    Chance Snow

    • 24
    • 40

    Mostly Cloudy

    • 37
    • 40

    Cloudy

    • 34
    • 45

    Mostly Cloudy

    • 28
    • 41

    Mostly Cloudy

    • 18
    • 38

    Mostly Cloudy

Today 22 Dec Dane

Not as cold. Cloudy. Slight chance of light snow in the Morning, then chance of light snow and rain in the late morning and afternoon. Highs in the upper 30s. South Winds 5 to 15 Mph. Chance of precipitation 30 percent.

Tonight 22 Dec Dane

Not as cold. Cloudy. A 20 percent chance of light snow early in the morning. Lows in the lower 20s. South Winds around 10 Mph.

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  • Temperature Forecast NOAA

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Sun Prairie Temperature Statistics

December Temperature

Madison, Dane County Regional-Truax Field (6.8 miles)

  • Lowest 14 December, 2025

    -7.1 °F

  • Average December

    18.3 °F

  • Highest 18 December, 2025

    42.1 °F

Climate (2020–Present)

Madison, Dane County Regional-Truax Field (6.8 miles)

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  • Average Low 2020–2025

    39.9 °F

  • Average 2020–2025

    49.6 °F

  • Average High 2020–2025

    58.8 °F
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