Kobuk Valley National Park in September
September at Kobuk Valley National Park averages a daytime high near 48°F and an overnight low around 39°F, with about 1.4" of precipitation. Visitation runs about 1.3× the park's average month, which makes September a busy month here.
- Average low
- 39°F
- Average high
- 48°F
Range across the year: -8°F to 60°F
- Precipitation
- 1.4 in
- Daylight
- 12.7 hours
Roughly 11% of the park's yearly visitors come in September: roughly 1,500 recreation visits in a typical year, based on National Park Service monthly counts from 1982 to 2025.
That makes September the 4th-busiest of the park's twelve months, sitting between the October peak (1.5×) and the February low (0.6×).
On our Best Time to Visit score September rates 33/100 ("Poor"). Our recommended month is June: the lightest crowds of the park's good-weather months.
The daily average of about 43°F is cool, so layers and a shorter daylight window matter. These figures are 1991–2020 NOAA climate normals from the nearest station, about 97.1 miles from the park.
Because June, July and August together draw about 31% 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 12.7 hours of daylight in September to explore — between the 0-hour midwinter low and the 24-hour summer high.
Park-wide, 2025 drew 7,786 recreation visits, down 54.8% from 17,233 in 2024.
How September compares with the months around it
| Month | Avg high / low | Crowds | Best-time score |
|---|---|---|---|
| August | 57°F / 48°F | 1.3× Busy | 47 Fair |
| September | 48°F / 39°F | 1.3× Busy | 33 Poor |
| October | 31°F / 23°F | 1.5× Busy | 2 Poor |
All twelve months at Kobuk Valley, with the best time to visit.
Frequently Asked Questions
September averages a daytime high near 48°F and an overnight low around 39°F at Kobuk Valley National Park, with about 1.4 inches of precipitation. These are 1991–2020 NOAA climate normals from the nearest station, about 97.1 miles from the park, so conditions inside the park can differ, especially at other elevations.
September is busy at Kobuk Valley National Park (about 1.3× the average month). Our best-time score rates it "Poor" at 33/100. Our recommended month is June.
The busiest month is October and the quietest is February. September sits at about 1.3× the park's average, or 11% of annual visitation.
A typical September sees about 2,000 recreation visits at Kobuk Valley National Park, based on National Park Service monthly counts from 1982–2025.
Where to stay near Kobuk Valley in September
Booking a September trip to Kobuk Valley National Park? Compare hotels, cabins and vacation rentals near the park with live September availability and prices.
Top-rated places to stay near Kobuk Valley
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 (1982–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-10-11.