Effigy Mounds National Monument Weather Forecast

    • 18
    • 23

    Mostly Cloudy

    • 25
    • 38

    Rain Likely

    • 7
    • 33

    Mostly Cloudy

    • 5
    • 21

    Chance Snow

    • -8
    • 18

    Mostly Cloudy

    • -8
    • 6

    Cold

Today 8 Dec Clayton

Cloudy with a chance of Flurries. Near steady temperature around 18. South Winds 5 to 10 Mph.

Tonight 8 Dec Clayton

Cloudy. A slight chance of freezing drizzle and snow after midnight. Not as cool with Lows around 17. Temperature rising into the mid 20s after midnight. Southwest Winds 10 to 15 Mph. Chance of precipitation 20 percent.

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  • Temperature Forecast NOAA

  • 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

    19.9 °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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