Great Basin National Park in September
September at Great Basin National Park averages a daytime high near 73°F and an overnight low around 48°F, with about 1.1" of precipitation. Visitation runs about 2.1× the park's average month, which makes September a very busy month here.
- Average low
- 48°F
- Average high
- 73°F
Range across the year: 20°F to 85°F
- Precipitation
- 1.1 in
- Daylight
- 12.2 hours
Roughly 17% of the park's yearly visitors come in September: about 25,000 recreation visits in a typical year, based on National Park Service monthly counts from 1979 to 2025.
That makes September the 2nd-busiest of the park's twelve months, sitting between the July peak (2.2×) and the December low (0.1×).
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 61°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 4.6 miles from the park.
Because June, July and August together draw about 48% 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 12.2 hours of daylight in September to explore — between the 9.3-hour midwinter low and the 14.7-hour summer high.
Park-wide, 2025 drew 161,210 recreation visits, up 6% from 152,068 in 2024.
How September compares with the months around it
| Month | Avg high / low | Crowds | Best-time score |
|---|---|---|---|
| August | 83°F / 56°F | 1.7× Very busy | 61 Good |
| September | 73°F / 48°F | 2.1× Very busy | 45 Fair |
| October | 60°F / 36°F | 1.2× Busy | 42 Poor |
All twelve months at Great Basin, with the best time to visit.
Things to do at Great Basin in September
The National Park Service tags 31 Great Basin activities for fall. Here are 8 of them. Each links to the park's own page for it.
- Hike the ADA Sky Island Forest Trail · 15-45 minutes
- Hike the Big Wash Trail · 12-24 hours
- Hike to Johnson Lake from Snake Creek · 4-8 hours
- Hike to Wheeler Peak · 4-10 hours
- See the Exhibits at the Great Basin Visitor Center · 5-30 minutes
- Astronomy Ranger Program · 60-120 minutes
- Hike the Shoshone ADA Trail · 10-20 minutes
- Hike to Snake Creek Overlook · 30-90 minutes
Frequently Asked Questions
September averages a daytime high near 73°F and an overnight low around 48°F at Great Basin National Park, with about 1.1 inches of precipitation. These are 1991–2020 NOAA climate normals from the nearest station, about 4.6 miles from the park, so conditions inside the park can differ, especially at other elevations.
September is very busy at Great Basin National Park (about 2.1× the average month). Our best-time score rates it "Fair" at 45/100. Our recommended month is May.
The busiest month is July and the quietest is December. September sits at about 2.1× the park's average, or 17% of annual visitation.
A typical September sees about 25,000 recreation visits at Great Basin National Park, based on National Park Service monthly counts from 1979–2025.
Where to stay near Great Basin in September
Booking a September trip to Great Basin National Park? Compare hotels, cabins and vacation rentals near the park with live September availability and prices.
Top-rated places to stay near Great Basin
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.