Valley Forge National Historical Park in August
August at Valley Forge National Historical Park averages a daytime high near 86°F and an overnight low around 64°F, with about 4.4" of precipitation. Visitation runs about 1.3× the park's average month, which makes August a busy month here.
- Average low
- 64°F
- Average high
- 86°F
Range across the year: 23°F to 88°F
- Precipitation
- 4.4 in
- Daylight
- 13.6 hours
Roughly 11% of the park's yearly visitors come in August: about 216,000 recreation visits in a typical year, based on National Park Service monthly counts from 1979 to 2025.
That makes August the 3rd-busiest of the park's twelve months, sitting between the July peak (1.5×) and the January low (0.4×).
On our Best Time to Visit score August rates 46/100 ("Fair"). Our recommended month is September: pleasant weather with noticeably thinner crowds (shoulder season).
The daily average of about 75°F is warm enough that midday heat is worth planning around. These figures are 1991–2020 NOAA climate normals from the nearest station, about 2.6 miles from the park.
August falls inside the park's busiest stretch: June, July and August together pull about 35% of the year's visitors, so a visit this month means sharing the park with the peak-season crowd.
You'll have about 13.6 hours of daylight in August to explore — between the 9.2-hour midwinter low and the 14.8-hour summer high.
Park-wide, 2025 drew 1,819,086 recreation visits, down 2.5% from 1,866,480 in 2024.
Across the past decade overall visitation has eased about 18.9%, so August may feel a touch quieter than it once did.
How August compares with the months around it
| Month | Avg high / low | Crowds | Best-time score |
|---|---|---|---|
| July | 88°F / 66°F | 1.5× Busy | 35 Poor |
| August | 86°F / 64°F | 1.3× Busy | 46 Fair |
| September | 79°F / 56°F | 1.1× Average | 63 Good |
All twelve months at Valley Forge, with the best time to visit.
Things to do at Valley Forge in August
The National Park Service tags 14 Valley Forge activities for summer. Here are 8 of them. Each links to the park's own page for it.
- Explore the Iron Making in Colonial America Museum Exhibit · 5-30 minutes
- Rent a Bicycle · 2-8 hours · reservation required
- Be a Valley Forge B.A.R.K. Ranger · 10-30 minutes
- Be a Virtual Junior Ranger · 30-45 minutes
- Dial in to the Cell Phone Guide · 2-120 minutes
- Explore the Valley Forge Encampment Museum Exhibit · 20-60 minutes
- Listen to the Audio Tour · 60-90 minutes
- Watch the Park Orientation Film · 19 minutes
Frequently Asked Questions
August averages a daytime high near 86°F and an overnight low around 64°F at Valley Forge National Historical Park, with about 4.4 inches of precipitation. These are 1991–2020 NOAA climate normals from the nearest station, about 2.6 miles from the park, so conditions inside the park can differ, especially at other elevations.
August is busy at Valley Forge National Historical Park (about 1.3× the average month). Our best-time score rates it "Fair" at 46/100. Our recommended month is September.
The busiest month is July and the quietest is January. August sits at about 1.3× the park's average, or 11% of annual visitation.
A typical August sees about 216,000 recreation visits at Valley Forge National Historical Park, based on National Park Service monthly counts from 1979–2025.
Where to stay near Valley Forge in August
Booking a August trip to Valley Forge National Historical Park? Compare hotels, cabins and vacation rentals near the park with live August availability and prices.
Top-rated places to stay near Valley Forge
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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.