Climbers in the Tetons should register at the Jenny Lake ranger station. When to go As with other popular summer destinations, aim for the shoulder seasons if possible. Summer anywhere in the accessible parts of the Rockies can be a madhouse, but in spring and fall, the crowds should be relatively thin. In spring at these elevations, winter snows tend to linger well into June. A few roads may remain closed.
Early fall is the best bet.
Where to stay Although it's possible to book accommodations in one of the parks and visit the other during day trips, such an approach entails considerable travel. But then, that's the cowboy way. A lot of western residents routinely drive 150 miles to meet somebody for lunch. The park offers lodge and hotel facilities, including the massively windowed main lodge at Jackson Lake in the Tetons. Grand Teton provides established campgrounds, designated backcountry camp sites and loosely designated camping zones in the wild.