How Crowded Is Timpanogos Cave National Monument in September?

September runs about 1.5× Timpanogos Cave 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 14,000 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×).

On our Best Time to Visit score September rates 63/100 ("Good") — the single best-rated month at Timpanogos Cave, balancing crowds against weather and daylight.

Typical September weather, from 1991–2020 NOAA climate normals at the nearest station, averages a daytime high near 76°F and an overnight low around 50°F, with about 2.2" of precipitation.

That average of about 63°F is a comfortable range for hiking and being outdoors all day.

Because June, July and August together draw about 64% 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 9.1-hour midwinter low and the 14.9-hour summer high.

Park-wide, 2025 drew 92,031 recreation visits, down 19.3% from 114,034 in 2024.

Across the past decade overall visitation has risen about 18.8%, so a September visit is likely to feel busier than it did a few years ago.