John Day Fossil Beds National Monument in September
September at John Day Fossil Beds National Monument averages a daytime high near 75°F and an overnight low around 45°F, with about 0.5" of precipitation. Visitation runs about 1.4× the park's average month, which makes September a busy month here.
- Average low
- 45°F
- Average high
- 75°F
Range across the year: 25°F to 83°F
- Precipitation
- 0.5 in
- Daylight
- 12.3 hours
Roughly 12% of the park's yearly visitors come in September: about 21,000 recreation visits in a typical year, based on National Park Service monthly counts from 1979 to 2025.
That makes September the 5th-busiest of the park's twelve months, sitting between the July peak (2×) and the January low (0.2×).
September is our recommended month at John Day Fossil Beds: 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 12.2 miles from the park.
Because June, July and August together draw about 47% 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 8.6-hour midwinter low and the 15.4-hour summer high.
Park-wide, 2025 drew 131,119 recreation visits, up 7% from 122,529 in 2024.
Across the past decade overall visitation has eased about 28%, 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 / 51°F | 1.9× Very busy | 56 Fair |
| September | 75°F / 45°F | 1.4× Busy | 56 Fair |
| October | 62°F / 37°F | 0.9× Average | 52 Fair |
All twelve months at John Day Fossil Beds, with the best time to visit.
Things to do at John Day Fossil Beds in September
The National Park Service tags 19 John Day Fossil Beds activities for fall. Here are 8 of them. Each links to the park's own page for it.
- Blue Basin Overlook Trail · 1-3 hours
- Clarno Arch Trail · 15-45 minutes
- Fossil Gallery · 10-60 minutes
- John Day Fossil Beds Junior Ranger Program · 20-120 minutes
- Leaf Hill Trail · 10-30 minutes
- Painted Cove Trail · 10-30 minutes
- River Trail · 10-35 minutes
- Story in Stone Trail · 15-30 minutes
Frequently Asked Questions
September averages a daytime high near 75°F and an overnight low around 45°F at John Day Fossil Beds National Monument, with about 0.5 inches of precipitation. These are 1991–2020 NOAA climate normals from the nearest station, about 12.2 miles from the park, so conditions inside the park can differ, especially at other elevations.
September is busy at John Day Fossil Beds National Monument (about 1.4× the average month). Our best-time score rates it "Fair" at 56/100. September is our recommended month for this park.
The busiest month is July and the quietest is January. September sits at about 1.4× the park's average, or 12% of annual visitation.
A typical September sees about 21,000 recreation visits at John Day Fossil Beds National Monument, based on National Park Service monthly counts from 1979–2025.
Where to stay near John Day Fossil Beds in September
Booking a September trip to John Day Fossil Beds National Monument? Compare hotels, cabins and vacation rentals near the park with live September availability and prices.
Top-rated places to stay near John Day Fossil Beds
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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.