Effigy Mounds National Monument Weather Forecast

    • -10
    • 8

    Chance Snow

    • -5
    • 6

    Cold

    • 10
    • 28

    Mostly Cloudy

    • 22
    • 37

    Mostly Cloudy

    • 23
    • 42

    Chance Rain

    • 11
    • 38

    Partly Sunny

Today 13 Dec Clayton

Cloudy with a chance of snow in the Morning, then partly sunny with a slight chance of snow in the afternoon. Snow accumulation up to 1 inch possible. Much Colder with Highs around 7 above. Northwest Winds 10 to 15 Mph. Chance of snow 50 percent. Wind chill Values as low as 15 below.

Tonight 13 Dec Clayton

Mostly cloudy and cold. Near steady temperature around zero. Northwest Winds 10 to 15 Mph with Gusts up to 30 Mph. Wind chill Values as low as 20 below.

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Effigy Mounds National Monument Temperature Statistics

December Temperature

Prairie Du Chien Municipal Airport (5.6 miles)

  • Lowest 4 December, 2025

    -4.4 °F

  • Average December

    20.6 °F

  • Highest 9 December, 2025

    40.1 °F

Climate (2020–Present)

Prairie Du Chien Municipal Airport (5.6 miles)

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  • Average Low 2020–2025

    40.3 °F

  • Average 2020–2025

    49.7 °F

  • Average High 2020–2025

    59.2 °F
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