John D Rockefeller Jr Memorial Parkway
Located at the heart of the Greater Yellowstone Ecosystem, the Rockefeller Parkway connects Grand Teton and Yellowstone National Parks. The late conservationist and philanthropist John D. Rockefeller, Jr. made significant contributions to several national parks including Grand Teton, Acadia, Great Smoky Mountains, and Virgin Islands. In 1972 Congress dedicated a 24,000 acre parcel of land as John D. Rockefeller, Jr. Memorial Parkway to recognize his generosity and foresight. Congress also named the highway from the south boundary of Grand Teton to West Thumb in Yellowstone in honor of Rockefeller. The parkway provides a natural link between the two national parks and contains features characteristic of both areas. In the parkway, the Teton Range tapers to a gentle slope at its northern edge, while rocks born of volcanic flows from Yellowstone line the Snake River and form outcroppings scattered atop hills and ridges. Grand Teton National Park administers John D. Rockefeller, Jr. Memorial Parkway.
Seasonality / Weather
Mid-April, May, June
Mild days and cool nights alternate with rain and occasional snow. Valley trails are snow covered until late May.
July and August
Warm days and cool nights prevail, with afternoon thundershowers common.
September, October, November
Sunny days and cold nights alternate with rain and occasional snow storms.
December through mid-April
Between storms the days are sunny and nights are frigid. Snow blankets the mountains and valley. Vehicles with four-wheel drive or all-weather tires are recommended for winter travel, roads may be closed during blizzards. Drive at or below posted speed limits at all times; moose and other wildlife are often seen crossing roads during the winter.
The John D. Rockefeller, Jr. Memorial Parkway is the stretch of roadway between Grand Teton and Yellowstone National Parks.
Shuttle services to and from Jackson are available from Salt Lake City, Utah; Pocatello, Idaho; and Idaho Falls, Idaho.