How Crowded Is Chaco Culture National Historical Park in September?

September runs about 1.5× Chaco Culture National Historical Park's average month, which makes it a busy month here — roughly 12% of the park's yearly visitors come in September.

In a typical September the park sees roughly 5,100 recreation visits, based on National Park Service monthly counts from 1979 to 2025.

That makes September the 3rd-busiest of the park's twelve months, sitting between the May peak (1.8×) and the January low (0.2×).

On our Best Time to Visit score September rates 52/100 ("Fair"), versus the top-rated August at 74/100 — pleasant weather with noticeably thinner crowds (shoulder season).

Typical September weather, from 1991–2020 NOAA climate normals at the nearest station, averages a daytime high near 80°F and an overnight low around 44°F, with about 1.1" of precipitation.

That average of about 62°F is a comfortable range for hiking and being outdoors all day.

Because June, July and August together draw about 27% of annual visitors, choosing September instead steps outside that summer crush — the single biggest lever on how crowded the park feels.

You'll have about 12.2 hours of daylight in September to explore — between the 9.6-hour midwinter low and the 14.4-hour summer high.

Park-wide, 2024 drew 37,840 recreation visits, down 5.9% from 40,198 in 2023.

Across the past decade overall visitation has eased about 37%, so September may feel a touch quieter than it once did.