How Crowded Is George Rogers Clark National Historical Park in June?

June runs about 1× George Rogers Clark National Historical Park's average month, which makes it an average month here — roughly 8% of the park's yearly visitors come in June.

In a typical June the park sees roughly 9,800 recreation visits, based on National Park Service monthly counts from 1979 to 2025.

That makes June the 5th-busiest of the park's twelve months, sitting between the May peak (2.9×) and the January low (0.2×).

On our Best Time to Visit score June rates 72/100 ("Good"), versus the top-rated October at 66/100 — pleasant weather with noticeably thinner crowds (shoulder season).

Typical June weather, from 1991–2020 NOAA climate normals at the nearest station, averages a daytime high near 86°F and an overnight low around 64°F, with about 4.8" of precipitation.

That average of about 75°F is a comfortable range for hiking and being outdoors all day.

June falls inside the park's busiest stretch: June, July and August together pull about 38% of the year's visitors, so a visit this month means sharing the park with the peak-season crowd.

You'll have about 14.7 hours of daylight in June to explore — near the year-round maximum.

Park-wide, 2025 drew 113,397 recreation visits, down 31.9% from 166,621 in 2024.

Across the past decade overall visitation has risen about 18.6%, so a June visit is likely to feel busier than it did a few years ago.