Thomas Stone National Historic Site in September
September at Thomas Stone National Historic Site averages a daytime high near 80°F and an overnight low around 62°F, with about 3.4" of precipitation. Visitation runs about 1.7× the park's average month, which makes September a very busy month here.
- Average low
- 62°F
- Average high
- 80°F
Range across the year: 28°F to 88°F
- Precipitation
- 3.4 in
- Daylight
- 12.2 hours
Roughly 14% of the park's yearly visitors come in September: about 910 recreation visits in a typical year, based on National Park Service monthly counts from 1992 to 2025.
It is the single busiest month of the year at Thomas Stone; January, the quietest, runs only about 0.3× the average — a 5-to-1 swing between high and low season.
On our Best Time to Visit score September rates 45/100 ("Fair"). Our recommended month is June: pleasant weather with noticeably thinner crowds (shoulder season).
The daily average of about 71°F is a comfortable range for hiking and being outdoors all day. These figures are 1991–2020 NOAA climate normals from the nearest station, about 14.6 miles from the park.
Because June, July and August together draw about 27% of annual visitors, choosing September instead steps outside that summer crush — the single biggest lever on how crowded the park feels.
You'll have about 12.2 hours of daylight in September to explore — between the 9.3-hour midwinter low and the 14.7-hour summer high.
Park-wide, 2024 drew 4,538 recreation visits, down 21.2% from 5,757 in 2023.
Across the past decade overall visitation has eased about 50.2%, so September may feel a touch quieter than it once did.
How September compares with the months around it
| Month | Avg high / low | Crowds | Best-time score |
|---|---|---|---|
| August | 86°F / 69°F | 1.0× Average | 58 Fair |
| September | 80°F / 62°F | 1.7× Very busy | 45 Fair |
| October | 69°F / 50°F | 1.2× Busy | 51 Fair |
All twelve months at Thomas Stone, with the best time to visit.
Things to do at Thomas Stone in September
The National Park Service tags 8 Thomas Stone activities for fall. Each links to the park's own page for it.
- Bicycle Colton's Point to Port Tobacco
- Bicycle Port Tobacco to Smallwood State Park
- Farm Outbuildings Loop · 90-120 minutes
- Long Loop: Stone Family Cemetery · 60-90 minutes
- Long Loop: Stone Mansion · 50-90 minutes
- Short Loop: Stone Family Cemetery · 10-15 minutes
- Short Loop: Stone Mansion · 30-60 minutes
- Tour the Thomas Stone House · 30-45 minutes
Frequently Asked Questions
September averages a daytime high near 80°F and an overnight low around 62°F at Thomas Stone National Historic Site, with about 3.4 inches of precipitation. These are 1991–2020 NOAA climate normals from the nearest station, about 14.6 miles from the park, so conditions inside the park can differ, especially at other elevations.
September is very busy at Thomas Stone National Historic Site (about 1.7× the average month). Our best-time score rates it "Fair" at 45/100. Our recommended month is June.
The busiest month is September and the quietest is January. September sits at about 1.7× the park's average, or 14% of annual visitation.
A typical September sees about 1,000 recreation visits at Thomas Stone National Historic Site, based on National Park Service monthly counts from 1992–2025.
Where to stay near Thomas Stone in September
Booking a September trip to Thomas Stone National Historic Site? Compare hotels, cabins and vacation rentals near the park with live September availability and prices.
Top-rated places to stay near Thomas Stone
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See the full ranking of the best national parks to visit in September.
Source: National Park Service Visitor Use Statistics (1992–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-10-11.