How Crowded Is Whitman Mission in August?
August is an average month at Whitman Mission National Historic Site, running about 1.1× the park's average month — roughly 9% of the year's visitors come in August. That puts it between the May peak and the December low. Overall our best-time score rates August as "Good" for a visit. Typical August weather averages a high near 90°F and a low around 52°F, with about 0.4" of precipitation. You'll get about 14.0 hours of daylight to explore.
Frequently Asked Questions
August is average at Whitman Mission National Historic Site (about 1.1× the average month). Our best-time score rates it "Good". The single best month overall is August.
The busiest month is May and the quietest is December. August sits at about 1.1× the park's average, or 9% of annual visitation.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-06-20.