Longfellow House Washington's Headquarters National Historic Site in September
September at Longfellow House Washington's Headquarters National Historic Site averages a daytime high near 76°F and an overnight low around 55°F, with about 4" of precipitation. Visitation runs about 1.5× the park's average month, which makes September a busy month here.
- Average low
- 55°F
- Average high
- 76°F
Range across the year: 19°F to 85°F
- Precipitation
- 4.0 in
- Daylight
- 12.3 hours
Roughly 13% of the park's yearly visitors come in September: roughly 6,600 recreation visits in a typical year, based on National Park Service monthly counts from 1979 to 2025.
That makes September the 4th-busiest of the park's twelve months, sitting between the June peak (1.6×) and the January low (0.3×).
On our Best Time to Visit score September rates 47/100 ("Fair"). Our recommended month is May: pleasant weather with noticeably thinner crowds (shoulder season).
The daily average of about 65°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 5.1 miles from the park.
Because June, July and August together draw about 40% 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 12.3 hours of daylight in September to explore — between the 8.9-hour midwinter low and the 15.1-hour summer high.
Park-wide, 2025 drew 54,912 recreation visits, up 6.6% from 51,496 in 2024.
Across the past decade overall visitation has risen about 9.5%, so a September visit is likely to feel busier than it did a few years ago.
How September compares with the months around it
| Month | Avg high / low | Crowds | Best-time score |
|---|---|---|---|
| August | 83°F / 63°F | 1.6× Busy | 48 Fair |
| September | 76°F / 55°F | 1.5× Busy | 47 Fair |
| October | 64°F / 43°F | 1.4× Busy | 34 Poor |
All twelve months at Longfellow House Washington's Headquarters, with the best time to visit.
Things to do at Longfellow House Washington's Headquarters in September
The National Park Service tags 3 Longfellow House Washington's Headquarters activities for fall. Each links to the park's own page for it.
- Explore Temporary Exhibits in the Longfellow House · 10-20 minutes
- Guided Tour of the Vassall-Craigie-Longfellow House · 30-50 minutes · reservation required
- Art in the Landscape
Frequently Asked Questions
September averages a daytime high near 76°F and an overnight low around 55°F at Longfellow House Washington's Headquarters National Historic Site, with about 4 inches of precipitation. These are 1991–2020 NOAA climate normals from the nearest station, about 5.1 miles from the park, so conditions inside the park can differ, especially at other elevations.
September is busy at Longfellow House Washington's Headquarters National Historic Site (about 1.5× the average month). Our best-time score rates it "Fair" at 47/100. Our recommended month is May.
The busiest month is June and the quietest is January. September sits at about 1.5× the park's average, or 13% of annual visitation.
A typical September sees about 7,000 recreation visits at Longfellow House Washington's Headquarters National Historic Site, based on National Park Service monthly counts from 1979–2025.
Where to stay near Longfellow House Washington's Headquarters in September
Booking a September trip to Longfellow House Washington's Headquarters National Historic Site? Compare hotels, cabins and vacation rentals near the park with live September availability and prices.
Top-rated places to stay near Longfellow House Washington's Headquarters
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See the full ranking of the best national parks to visit in September.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-10-11.