How Crowded Is Devils Tower National Monument in September?

September runs about 1.6× Devils Tower National Monument's average month, which makes it a busy month here — roughly 13% of the park's yearly visitors come in September.

In a typical September the park sees about 65,000 recreation visits, based on National Park Service monthly counts from 1979 to 2025.

That makes September the 4th-busiest of the park's twelve months, sitting between the July peak (2.9×) and the January low (0.1×).

On our Best Time to Visit score September rates 59/100 ("Fair"), versus the top-rated May at 63/100 — best overall balance of crowds, weather and daylight.

Typical September weather, from 1991–2020 NOAA climate normals at the nearest station, averages a daytime high near 75°F and an overnight low around 42°F, with about 1.3" of precipitation.

That average of about 58°F is a comfortable range for hiking and being outdoors all day.

Because June, July and August together draw about 67% 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 12.3 hours of daylight in September to explore — between the 8.6-hour midwinter low and the 15.4-hour summer high.

Park-wide, 2025 drew 515,303 recreation visits, down 4.7% from 540,890 in 2024.

Across the past decade overall visitation has risen about 8.6%, so a September visit is likely to feel busier than it did a few years ago.