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Effigy Mounds National Monument in July

Very busy2.0× average month · best-time score 46/100

July at Effigy Mounds National Monument averages a daytime high near 83°F and an overnight low around 63°F, with about 4.1" of precipitation. Visitation runs about 2× the park's average month, which makes July a very busy month here.

Average low
63°F
Average high
83°F

Range across the year: 10°F to 83°F

Crowds
2.0× averageVery busy
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  2. F
  3. M
  4. A
  5. M
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  12. D
Precipitation
4.1 in
Daylight
14.9 hours

Roughly 17% of the park's yearly visitors come in July: roughly 10,000 recreation visits in a typical year, based on National Park Service monthly counts from 1979 to 2025.

It is the single busiest month of the year at Effigy Mounds; December, the quietest, runs only about 0.4× the average — a 6-to-1 swing between high and low season.

On our Best Time to Visit score July rates 46/100 ("Fair"). Our recommended month is May: pleasant weather with noticeably thinner crowds (shoulder season).

The daily average of about 73°F is a comfortable range for hiking and being outdoors all day. These figures are 1991–2020 NOAA climate normals from the nearest station, about 3.7 miles from the park.

July falls inside the park's busiest stretch: June, July and August together pull about 42% of the year's visitors, so a visit this month means sharing the park with the peak-season crowd.

You'll have about 14.9 hours of daylight in July to explore — near the year-round maximum.

Park-wide, 2025 drew 56,912 recreation visits, down 8.2% from 61,975 in 2024.

Across the past decade overall visitation has risen about 7.1%, so a July visit is likely to feel busier than it did a few years ago.

How July compares with the months around it

MonthAvg high / lowCrowdsBest-time score
June80°F / 59°F1.5× Busy62 Good
July83°F / 63°F2.0× Very busy46 Fair
August81°F / 61°F1.6× Busy58 Fair

All twelve months at Effigy Mounds, with the best time to visit.

Reviewed by WhenToVisitParks Editorial Team · Updated

Frequently Asked Questions

July averages a daytime high near 83°F and an overnight low around 63°F at Effigy Mounds National Monument, with about 4.1 inches of precipitation. These are 1991–2020 NOAA climate normals from the nearest station, about 3.7 miles from the park, so conditions inside the park can differ, especially at other elevations.

July is very busy at Effigy Mounds National Monument (about 2.0× the average month). Our best-time score rates it "Fair" at 46/100. Our recommended month is May.

The busiest month is July and the quietest is December. July sits at about 2.0× the park's average, or 17% of annual visitation.

A typical July sees about 10,000 recreation visits at Effigy Mounds National Monument, based on National Park Service monthly counts from 1979–2025.

Where to stay near Effigy Mounds in July

Booking a July trip to Effigy Mounds National Monument? Compare hotels, cabins and vacation rentals near the park with live July availability and prices.

Top-rated places to stay near Effigy Mounds

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See the full ranking of the best national parks to visit in July.

Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-10-11.