• The Cathedral Group from the Teton Park Road

    Grand Teton

    National Park Wyoming

There are park alerts in effect.
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  • Seasonal road closures in effect

    Seasonal road closures are in effect for motorized vehicles. The Teton Park Road is closed from the Taggart Lake Trailhead to the Signal Mountain Lodge. The Moose-Wilson Road is closed from the Granite Canyon Trailhead to the Death Canyon Road. More »

  • Avalanche hazards exist in the park

    Avalanche hazards exist in the park, especially in mountain canyons and on exposed slopes. A daily avalanche forecast can be found at www.jhavalanche.org or by calling (307) 733-2664. More »

  • Bears emerging from hibernation

    Bears are beginning to emerge from hibernation. Travel in groups of three of more, make noise and carry bear spray. Visitors must stay at least 100 yards from bears. More »

Weather

Dark clouds move in as a thunderstorm starts in Moose

Dark clouds move in over the mountains near Moose. Thunderstorms occur frequently in the Tetons during the summer.



The contrast in Jackson Hole between summer and winter is striking. Moose averages 14 feet of snowfall in the winter and often reaches into the 80s in the summer. As you climb into the mountains, temperatures drop 4°F for every 1,000 feet in elevation gain.

Winter may not officially start until December 21, but the first heavy snows often fall by November 1. Between winter storms the days are sunny and the nights are frigid. From December through February the average high temperature is 28°F and the average low temperature is 2°F. Stop at the Craig Thomas Discovery & Visitor Center in Moose for road information.

During spring, mild days and cool nights frequently come with rain or snow. The spring months average 11 days with measurable precipitation. Temperatures typically range from a low of 22°F to a high of 49°F during April. Valley trails remain snow-covered until late May or early June.

Between the months of June through August the average daily temperature is 77°F, but some high-elevation hiking trails don't melt out until late July. Nighttime temperatures can reach the upper 30s. Most of the year's rainfall occurs during the summer months; afternoon thunderstorms are common.

Sun and occasional rain and snow fill the short fall days. From September through November, the average daily maximum is 54°F while the minimum average is a cool 23°F. The fall months average 23 days that drop below freezing. For a comfortable trip, bring plenty of layered clothing.

For more information about weather in Grand Teton National Park, please visit our trip planning section on weather. more>>

To learn more about summer weather safety, watch our video podcast.

Did You Know?

Beaver Dick Leigh and his family.

Did you know that Jenny and Leigh Lakes are named for the fur trapper “Beaver” Dick Leigh and his wife Jenny (not pictured)? Beaver Dick and Jenny assisted the Hayden party that explored the region in 1872. This couple impressed the explorers to the extent that they named the lakes in their honor.