Effigy Mounds National Monument Weather Forecast

    • 60
    • 80

    Rain Showers

    • 42
    • 64

    Chance Rain Showers

    • 42
    • 63

    Partly Sunny

    • 45
    • 63

    Chance Rain Showers

    • 49
    • 70

    Rain Showers Likely

    • 53
    • 77

    Mostly Cloudy

Today 18 May Clayton

Mostly cloudy. Highs in the upper 70s. South Winds 10 to 15 Mph.

Tonight 18 May Clayton

A chance of Thunderstorms. Showers. Lows in the upper 50s. South Winds 10 to 20 Mph with Gusts up to 30 Mph. Chance of rain 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Effigy Mounds National Monument Temperature Statistics

May Temperature

Prairie Du Chien Municipal Airport (5.6 miles)

  • Lowest 2 May, 2026

    31.1 °F

  • Average May

    56 °F

  • Highest 15 May, 2026

    84.4 °F

Climate (2021–Present)

Prairie Du Chien Municipal Airport (5.6 miles)

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  • Average Low 2021–2026

    40.5 °F

  • Average 2021–2026

    50 °F

  • Average High 2021–2026

    59.6 °F
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