How Crowded Is Whitman Mission National Historic Site in October?

October runs about 1.1× Whitman Mission National Historic Site's average month, which makes it an average month here — roughly 9% of the park's yearly visitors come in October.

In a typical October the park sees roughly 4,400 recreation visits, based on National Park Service monthly counts from 1979 to 2025.

That makes October the 6th-busiest of the park's twelve months, sitting between the May peak (1.7×) and the December low (0.3×).

On our Best Time to Visit score October rates 47/100 ("Fair"), versus the top-rated August at 71/100 — pleasant weather with noticeably thinner crowds (shoulder season).

Typical October weather, from 1991–2020 NOAA climate normals at the nearest station, averages a daytime high near 66°F and an overnight low around 36°F, with about 1.3" of precipitation.

That average of about 51°F is a comfortable range for hiking and being outdoors all day.

Because June, July and August together draw about 33% of annual visitors, choosing October instead steps outside that summer crush — the single biggest lever on how crowded the park feels.

You'll have about 10.7 hours of daylight in October to explore — between the 8.5-hour midwinter low and the 15.5-hour summer high.

Park-wide, 2025 drew 54,089 recreation visits, down 11.8% from 61,331 in 2024.

Across the past decade overall visitation has risen about 12.1%, so a October visit is likely to feel busier than it did a few years ago.