Keweenaw National Historical Park in September
September at Keweenaw National Historical Park averages a daytime high near 66°F and an overnight low around 47°F. Visitation runs about 1.9× the park's average month, which makes September a very busy month here.
- Average low
- 47°F
- Average high
- 66°F
Range across the year: 9°F to 75°F
- Daylight
- 12.3 hours
Roughly 16% of the park's yearly visitors come in September: roughly 3,700 recreation visits in a typical year, based on National Park Service monthly counts from 2016 to 2025.
That makes September the 3rd-busiest of the park's twelve months, sitting between the August peak (3×) and the January low (0.1×).
On our Best Time to Visit score September rates 55/100 ("Fair"). Our recommended month is May: the lightest crowds of the park's good-weather months.
The daily average of about 56°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 2.2 miles from the park.
Because June, July and August together draw about 64% 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 8.3-hour midwinter low and the 15.7-hour summer high.
Park-wide, 2025 drew 35,489 recreation visits, up 13.8% from 31,191 in 2024.
Across the past decade overall visitation has risen about 69.3%, 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 | 74°F / 54°F | 3.0× Very busy | 52 Fair |
| September | 66°F / 47°F | 1.9× Very busy | 55 Fair |
| October | 52°F / 37°F | 0.9× Average | 53 Fair |
All twelve months at Keweenaw, with the best time to visit.
Things to do at Keweenaw in September
The National Park Service tags 7 Keweenaw activities for fall. Each links to the park's own page for it.
- Discover Keweenaw Lighthouses
- Experience Keweenaw Geology
- Go Underground · 1-6 hours · reservation required
- Hiking into History
- Step Back in Time
- Visit Museums and Heritage Centers
- Research History · reservation required
Frequently Asked Questions
September averages a daytime high near 66°F and an overnight low around 47°F at Keweenaw National Historical Park. These are 1991–2020 NOAA climate normals from the nearest station, about 2.2 miles from the park, so conditions inside the park can differ, especially at other elevations.
September is very busy at Keweenaw National Historical Park (about 1.9× the average month). Our best-time score rates it "Fair" at 55/100. Our recommended month is May.
The busiest month is August and the quietest is January. September sits at about 1.9× the park's average, or 16% of annual visitation.
A typical September sees about 4,000 recreation visits at Keweenaw National Historical Park, based on National Park Service monthly counts from 2016–2025.
Where to stay near Keweenaw in September
Booking a September trip to Keweenaw National Historical Park? Compare hotels, cabins and vacation rentals near the park with live September availability and prices.
Top-rated places to stay near Keweenaw
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 (2016–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-10-11.