Lowell National Historical Park in September
September at Lowell National Historical Park averages a daytime high near 76°F and an overnight low around 52°F, with about 3.9" of precipitation. Visitation runs about 0.5× the park's average month, which makes September a very quiet month here.
- Average low
- 52°F
- Average high
- 76°F
Range across the year: 16°F to 85°F
- Precipitation
- 3.9 in
- Daylight
- 12.3 hours
Roughly 4% of the park's yearly visitors come in September: about 15,000 recreation visits in a typical year, based on National Park Service monthly counts from 1979 to 2025.
That makes September the 10th-busiest of the park's twelve months, sitting between the July peak (4.8×) and the December low (0.3×).
September is our recommended month at Lowell: pleasant weather with noticeably thinner crowds (shoulder season).
The daily average of about 64°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 2.4 miles from the park.
Because June, July and August together draw about 60% 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, 2024 drew 264,456 recreation visits, up 3.2% from 256,303 in 2023.
Across the past decade overall visitation has eased about 52.5%, 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 | 83°F / 59°F | 1.5× Busy | 76 Excellent |
| September | 76°F / 52°F | 0.5× Very quiet | 81 Excellent |
| October | 62°F / 40°F | 0.5× Quiet | 61 Good |
All twelve months at Lowell, with the best time to visit.
Things to do at Lowell in September
The National Park Service tags 4 Lowell activities for fall. Each links to the park's own page for it.
- Become a Lowell Junior Ranger · 30-180 minutes
- Earn an Acre Community Ranger Badge · 30-120 minutes
- Explore the Boott Cotton Mills Museum · 30-120 minutes
- Visit the Park Store at the Boott Cotton Mills Museum
Frequently Asked Questions
September averages a daytime high near 76°F and an overnight low around 52°F at Lowell National Historical Park, with about 3.9 inches of precipitation. These are 1991–2020 NOAA climate normals from the nearest station, about 2.4 miles from the park, so conditions inside the park can differ, especially at other elevations.
September is very quiet at Lowell National Historical Park (about 0.5× the average month). Our best-time score rates it "Excellent" at 81/100. September is our recommended month for this park.
The busiest month is July and the quietest is December. September sits at about 0.5× the park's average, or 4% of annual visitation.
A typical September sees about 15,000 recreation visits at Lowell National Historical Park, based on National Park Service monthly counts from 1979–2025.
Where to stay near Lowell in September
Booking a September trip to Lowell National Historical Park? Compare hotels, cabins and vacation rentals near the park with live September availability and prices.
Top-rated places to stay near Lowell
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 September.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-10-11.