Effigy Mounds National Monument Weather Forecast

    • 32
    • 40

    Cloudy

    • 33
    • 39

    Chance Rain

    • 35
    • 46

    Mostly Cloudy

    • 17
    • 49

    Mostly Cloudy

    • 5
    • 25

    Partly Sunny

    • 8
    • 20

    Mostly Sunny

Today 24 Dec Clayton

Cloudy. A chance of drizzle in the afternoon. Highs in the upper 30s. Southeast Winds 5 to 10 Mph.

Tonight 24 Dec Clayton

Mostly cloudy. Near steady temperature in the mid 20s. East Winds around 5 Mph.

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Effigy Mounds National Monument Temperature Statistics

December Temperature

Prairie Du Chien Municipal Airport (5.6 miles)

  • Lowest 14 December, 2025

    -4.7 °F

  • Average December

    19.8 °F

  • Highest 18 December, 2025

    43.2 °F

Climate (2020–Present)

Prairie Du Chien Municipal Airport (5.6 miles)

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  • Average Low 2020–2025

    40.2 °F

  • Average 2020–2025

    49.7 °F

  • Average High 2020–2025

    59.2 °F
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