Harriet Tubman Underground Railroad National Historical Park in August
August at Harriet Tubman Underground Railroad National Historical Park averages a daytime high near 88°F and an overnight low around 67°F. Visitation runs about 1.3× the park's average month, which makes August a busy month here.
- Average low
- 67°F
- Average high
- 88°F
Range across the year: 28°F to 90°F
- Daylight
- 13.5 hours
Roughly 11% of the park's yearly visitors come in August: roughly 1,900 recreation visits in a typical year, based on National Park Service monthly counts from 2023 to 2025.
That makes August the 3rd-busiest of the park's twelve months, sitting between the July peak (1.6×) and the January low (0.4×).
On our Best Time to Visit score August rates 45/100 ("Fair"). Our recommended month is October: pleasant weather with noticeably thinner crowds (shoulder season).
The daily average of about 77°F is warm enough that midday heat is worth planning around. These figures are 1991–2020 NOAA climate normals from the nearest station, about 17.3 miles from the park.
August falls inside the park's busiest stretch: June, July and August together pull about 37% of the year's visitors, so a visit this month means sharing the park with the peak-season crowd.
You'll have about 13.5 hours of daylight in August to explore — between the 9.3-hour midwinter low and the 14.7-hour summer high.
Park-wide, 2025 drew 15,348 recreation visits, down 14.5% from 17,946 in 2024.
How August compares with the months around it
| Month | Avg high / low | Crowds | Best-time score |
|---|---|---|---|
| July | 90°F / 69°F | 1.6× Busy | 33 Poor |
| August | 88°F / 67°F | 1.3× Busy | 45 Fair |
| September | 82°F / 61°F | 1.0× Average | 69 Good |
All twelve months at Harriet Tubman Underground Railroad, with the best time to visit.
Frequently Asked Questions
August averages a daytime high near 88°F and an overnight low around 67°F at Harriet Tubman Underground Railroad National Historical Park. These are 1991–2020 NOAA climate normals from the nearest station, about 17.3 miles from the park, so conditions inside the park can differ, especially at other elevations.
August is busy at Harriet Tubman Underground Railroad National Historical Park (about 1.3× the average month). Our best-time score rates it "Fair" at 45/100. Our recommended month is October.
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 2,000 recreation visits at Harriet Tubman Underground Railroad National Historical Park, based on National Park Service monthly counts from 2023–2025.
Where to stay near Harriet Tubman Underground Railroad in August
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Top-rated places to stay near Harriet Tubman Underground Railroad
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See the full ranking of the best national parks to visit in August.
Source: National Park Service Visitor Use Statistics (2023–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-10-11.