Marsh - Billings - Rockefeller National Historical Park in September
September at Marsh - Billings - Rockefeller National Historical Park averages a daytime high near 73°F and an overnight low around 47°F, with about 3.6" of precipitation. Visitation runs about 1.8× the park's average month, which makes September a very busy month here.
- Average low
- 47°F
- Average high
- 73°F
Range across the year: 7°F to 82°F
- Precipitation
- 3.6 in
- Daylight
- 12.3 hours
Roughly 15% of the park's yearly visitors come in September: roughly 8,500 recreation visits in a typical year, based on National Park Service monthly counts from 1998 to 2025.
That makes September the 3rd-busiest of the park's twelve months, sitting between the October peak (2×) and the January low (0.3×).
On our Best Time to Visit score September rates 45/100 ("Fair"). Our recommended month is May: the lightest crowds of the park's good-weather months.
The daily average of about 60°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 1.4 miles from the park.
Because June, July and August together draw about 41% 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 8.8-hour midwinter low and the 15.2-hour summer high.
Park-wide, 2025 drew 77,524 recreation visits, down 5.1% from 81,713 in 2024.
Across the past decade overall visitation has risen about 45.6%, 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 | 80°F / 55°F | 1.9× Very busy | 52 Fair |
| September | 73°F / 47°F | 1.8× Very busy | 45 Fair |
| October | 59°F / 36°F | 2.0× Very busy | 21 Poor |
All twelve months at Marsh - Billings - Rockefeller, with the best time to visit.
Things to do at Marsh - Billings - Rockefeller in September
The National Park Service tags 4 Marsh - Billings - Rockefeller activities for fall. Each links to the park's own page for it.
- BARK Ranger Program at Marsh-Billings-Rockefeller National Historical Park · 5-15 minutes
- Valley Quests at Marsh-Billings-Rockefeller National Historical Park · 1-3 hours
- Visit the Mansion · 30-75 minutes · reservation required
- Hiking at Marsh-Billings-Rockefeller
Frequently Asked Questions
September averages a daytime high near 73°F and an overnight low around 47°F at Marsh - Billings - Rockefeller National Historical Park, with about 3.6 inches of precipitation. These are 1991–2020 NOAA climate normals from the nearest station, about 1.4 miles from the park, so conditions inside the park can differ, especially at other elevations.
September is very busy at Marsh - Billings - Rockefeller National Historical Park (about 1.8× the average month). Our best-time score rates it "Fair" at 45/100. Our recommended month is May.
The busiest month is October and the quietest is January. September sits at about 1.8× the park's average, or 15% of annual visitation.
A typical September sees about 8,000 recreation visits at Marsh - Billings - Rockefeller National Historical Park, based on National Park Service monthly counts from 1998–2025.
Where to stay near Marsh - Billings - Rockefeller in September
Booking a September trip to Marsh - Billings - Rockefeller National Historical Park? Compare hotels, cabins and vacation rentals near the park with live September availability and prices.
Top-rated places to stay near Marsh - Billings - Rockefeller
Prices for Oct 30–Nov 1, 4 adults. Change dates on the map below.
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Visiting Marsh - Billings - Rockefeller in September?
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See the full ranking of the best national parks to visit in September.
Source: National Park Service Visitor Use Statistics (1998–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-10-11.