Whitman Mission National Historic Site in August
August at Whitman Mission National Historic Site averages a daytime high near 90°F and an overnight low around 52°F, with about 0.4" of precipitation. Visitation runs about 1.1× the park's average month, which makes August an average month here.
- Average low
- 52°F
- Average high
- 90°F
Range across the year: 27°F to 90°F
- Precipitation
- 0.4 in
- Daylight
- 14.0 hours
Roughly 9% of the park's yearly visitors come in August: roughly 4,400 recreation visits in a typical year, based on National Park Service monthly counts from 1979 to 2025.
That makes August the 7th-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 August rates 60/100 ("Good"). Our recommended month is September: the lightest crowds of the park's good-weather months.
The daily average of about 71°F is hot, with afternoons near 90°F to plan the day around. These figures are 1991–2020 NOAA climate normals from the nearest station, about 0.2 miles from the park.
August falls inside the park's busiest stretch: June, July and August together pull about 33% of the year's visitors, so a visit this month means sharing the park with the peak-season crowd.
You'll have about 14 hours of daylight in August 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 August visit is likely to feel busier than it did a few years ago.
How August compares with the months around it
| Month | Avg high / low | Crowds | Best-time score |
|---|---|---|---|
| July | 90°F / 54°F | 1.3× Busy | 53 Fair |
| August | 90°F / 52°F | 1.1× Average | 60 Good |
| September | 80°F / 44°F | 1.2× Busy | 61 Good |
All twelve months at Whitman Mission, with the best time to visit.
Things to do at Whitman Mission in August
The National Park Service tags 5 Whitman Mission activities for summer. Each links to the park's own page for it.
- Programs at Whitman Mission NHS · 30-60 minutes
- Visit the Whitman Mission Museum
- Walk the Trails and Tour the Mission Grounds · 15-60 minutes
- Watch A Prophecy Fulfilled · 25 minutes
- Whitman Mission NHS Audio Tour · 30-90 minutes
Frequently Asked Questions
August averages a daytime high near 90°F and an overnight low around 52°F at Whitman Mission National Historic Site, with about 0.4 inches of precipitation. These are 1991–2020 NOAA climate normals from the nearest station, about 0.2 miles from the park, so conditions inside the park can differ, especially at other elevations.
August is average at Whitman Mission National Historic Site (about 1.1× the average month). Our best-time score rates it "Good" at 60/100. Our recommended month is September.
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.
A typical August sees about 4,000 recreation visits at Whitman Mission National Historic Site, based on National Park Service monthly counts from 1979–2025.
Where to stay near Whitman Mission in August
Booking a August trip to Whitman Mission National Historic Site? Compare hotels, cabins and vacation rentals near the park with live August availability and prices.
Top-rated places to stay near Whitman Mission
Prices for Oct 30–Nov 1, 4 adults. Change dates on the map below.
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See the full ranking of the best national parks to visit in August.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-10-11.