Jackson Hole has long, cold winters. The first heavy snows fall by November 1 and continue through April; snow and frost are possible during any month.

Mid-April, May, June
Mild days and cool nights. Valley trails are usually snow-covered until mid- to late-May.

July and August
Warm days and cool nights prevail; afternoon thundershowers are not uncommon.

September and October
Sunny days and cold nights alternate with rain and occasional snow.

November through mid-April
Between storms the days are sunny and nights are frigid. Snow blankets the mountains and valley. Vehicles with four-wheel drive, all-wheel drive, and/or snow tires are recommended for winter travel. Some roads may be closed during blizzards. Drive at or below posted speed limits as conditions warrant; bison and other wildlife are often seen crossing roads during the winter.

Recommended Clothing
Layers are key to the changing temperatures throughout the year. It's not a bad idea to also have some rain gear spring through fall. Sub-zero temperatures are common throughout the winter and demand warm, multi-layered clothing, hats, mittens and cold weather boots.