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National monument · IA

Effigy Mounds National Monument

National Park Service
DesignationNational monument
StateIA
Managed byNational Park Service
Best seasonJun–Sep
On the map
Map showing the location of Effigy Mounds National Monument

About Effigy Mounds National Monument

The mounds preserved here are considered sacred by many Americans, especially the Monument's 20 culturally associated American Indian tribes. A visit offers opportunities to contemplate the meanings of the mounds and the people who built them. The 200 plus American Indian mounds are located in one of the most picturesque sections of the Upper Mississippi River Valley.

Things to do

HikingWildlife viewing

When to go

JanFebMarAprMayJunJulAugSepOctNovDec
Best Jun–SepAverage low–high: 62–80°FAverage monthly sunny share of daylight: 51%8.3 wet days / month
Weather data & source

Each figure averages the highlighted months. 2018–2023 averages, not a forecast. Wet days estimate days with at least 1 mm of rain or snow using a calibrated ERA5 threshold. Contains modified Copernicus Climate Change Service information. Weather data by Open-Meteo.com (AWS Open Data, CC BY 4.0). ERA5 via Open-Meteo AWS Open Data

Plan your visit

Effigy Mounds National Monument is managed by National Park Service. Check current conditions, permits, and reservations before you go.

See it on Recreation.gov →