How Crowded Is Thaddeus Kosciuszko National Memorial in June?

June runs about 1.2× Thaddeus Kosciuszko National Memorial's average month, which makes it a busy month here — roughly 10% of the park's yearly visitors come in June.

In a typical June the park sees about 510 recreation visits, based on National Park Service monthly counts from 1981 to 2025.

That makes June the 5th-busiest of the park's twelve months, sitting between the July peak (1.8×) and the January low (0.4×).

On our Best Time to Visit score June rates 59/100 ("Fair"), versus the top-rated October at 55/100 — 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 85°F and an overnight low around 66°F, with about 4.8" of precipitation.

That average of about 75°F is warm enough that midday heat is worth planning around.

June falls inside the park's busiest stretch: June, July and August together pull about 39% of the year's visitors, so a visit this month means sharing the park with the peak-season crowd.

You'll have about 14.8 hours of daylight in June to explore — near the year-round maximum.

Park-wide, 2013 drew 1,682 recreation visits, down 17.8% from 2,045 in 2012.

Across the past decade overall visitation has eased about 49%, so June may feel a touch quieter than it once did.