Effigy Mounds National Monument Weather Forecast

    • 24
    • 34

    Rain/Snow

    • 7
    • 29

    Slight Chance Snow

    • 13
    • 23

    Chance Snow

    • 0
    • 24

    Chance Snow

    • -12
    • 8

    Chance Snow

    • -7
    • 8

    Cold

    • 3
    • 22

    Mostly Cloudy

Today 9 Dec Clayton

Cloudy with a chance of Rain, snow with a slight chance of freezing rain. Additional ice accumulation of less than one tenth of an inch. Not as cold with Highs in the mid 30s. South Winds 10 to 15 Mph. Chance of precipitation 50 percent.

Tonight 9 Dec Clayton

Rain, snow and freezing rain this Evening, then snow likely with a chance of rain after midnight. Patchy blowing snow after midnight. Snow accumulation little or no. Ice accumulation of less than one tenth of an inch. Breezy with Lows in the mid 20s. Southwest Winds 10 to 20 Mph with Gusts up to 35 Mph, becoming northwest 20 to 25 Mph with Gusts up to 45 Mph after midnight. Chance of precipitation 90 percent.

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  • Temperature Real-Time

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

    19.2 °F

  • Highest 3 December, 2025

    32 °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

    49.8 °F

  • Average High 2020–2025

    59.3 °F
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