Grand Teton National Park in September
Great time to visit
September is arguably the park's finest month. Perfect weather, stunning fall colors, and slightly smaller crowds make this the sweet spot.
Weather
September brings crisp mornings and warm afternoons with crystal-clear mountain air. The first frost usually hits by month's end, turning aspens golden. Rain remains minimal with spectacular visibility.
21°C high3°C low4 rain days
Crowds & Cost
high crowds
~$240/day average
Events & Festivals
- •Jackson Hole Fall Arts Festival
- •Elk bugling season peaks
September Tips
- •Aspen viewing peaks mid to late September in lower elevations
- •Elk bugling is incredible at dawn and dusk - bring binoculars
- •Pack warm layers for chilly mornings and evenings
All Months
June through September is your window, but each month serves up something different. June brings wildflowers and snow-capped peaks, but also muddy trails and lingering snow at higher elevations. Some alpine lakes stay frozen into July.
July and August deliver peak conditions — all trails accessible, warmest weather, and those perfect bluebird days that make you want to quit your job and become a mountain guide. But you'll share the experience with everyone else who had the same idea. Expect crowds and book accommodations months ahead.
September is the sweet spot for many. Cooler temperatures, fewer crowds, and aspen trees turning gold against the granite peaks. The weather can be unpredictable — you might get snow or you might get 70-degree days. Pack for both.
Winter transforms the park into a cross-country skiing and snowshoeing paradise, but most roads close and services shut down. Only the most dedicated (or crazy) visitors venture in from December to March.
Grand Teton National Park Scores
Solo
8/10
Couples
8/10
Families
6/10
Adventure
10/10
Budget
5/10
Luxury
7/10
BUILD YOUR GRAND TETON NATIONAL PARK PLAN
Insider picks, smart timing, and a plan ready when you are.