Grand Teton · September
Grand Teton in September
September is a busy time to visit Grand Teton — quieter than August, busier than October.
Crowd score
How busy it gets
Approaching peak season — expect full lots by mid-morning and busy overlooks.
About 79% of this park's busiest month.
Source: NPS Visitor Use Statistics, 2023–2025
Data: NPS visitation 2023–2025 · crowd scores computed Jul 2026 · alerts checked Jul 10, 2026. How this is calculated →
Computed from federal data · Methodology by Sharon Ben-Moshe
Visitation
Typical September visits vs. the year
Typical monthly recreation visits, averaged over the most recent three full years.
Source: NPS Visitor Use Statistics, 2023–2025
Weather
September weather
- Avg high
- 66°F
- Avg low
- 34°F
- Precipitation
- 1.6"
- Sunrise
- 6:02 AM
- Sunset
- 6:32 PM
- Daylight
- 12.5h
Source: NOAA 1991–2020 climate normals, MORAN 5WNW, WY US
What's open
Grand Teton in September: access
Visitors may enter the park at any time, but visitor services and motor vehicle access vary throughout the year.
Seasonal closures may apply:
- Park Closure
Death Canyon Trailhead Construction Closure
Death Canyon Road and Trailhead are closed to all use. Start hikes at alternative trailheads such as Granite Canyon, LSR Preserve, and Taggart Lake.
Details on nps.gov →
Source: NPS Data API
Conditions
Current alerts
- Park Closure
Death Canyon Trailhead Construction Closure
Death Canyon Road and Trailhead are closed to all use. Start hikes at alternative trailheads such as Granite Canyon, LSR Preserve, and Taggart Lake.
Details on nps.gov → - Caution
Construction in the South End of the Park
Construction projects underway. Moose-Wilson Road open between Granite Entrance and Moose June 19 - Sept. 7. Expect delays of 45 minutes or longer. Death Canyon Road and Trailhead closed. Taggart Trail detour in place.
Details on nps.gov → - Caution
Measles case in Teton County confirmed by Wyoming Department of Health
The Wyoming Department of Health (WDH) has confirmed a case of measles in an unvaccinated adult from Teton County. Visitors and residents may have been exposed at several locations in Teton County, including the Colter Bay area in Grand Teton National Park. View exposure locations and guidance from the Wyoming Department of Health.
Details on nps.gov →
Source: NPS Data API
Context
Grand Teton crowds across the year
Alternatives
Quieter nearby in September
FAQ
Grand Teton in September
How busy is Grand Teton in September?
September rates 8/10 for crowds (Busy) at Grand Teton National Park — about 79% of its busiest month. Typical recreation visits: 599,905.
What is the weather like at Grand Teton in September?
In September, Grand Teton averages a high of 66°F and a low of 34°F, with about 1.6 inches of precipitation.