Weather / Climate

Get information on the Grand Teton climate in order to prepare for a visit, so you’ll know the best way to dress and pack no matter the time of year.

  • The heart of the summer typically spans from July through August with average temperatures of 70 to 80 in lower elevations
  • Springtime is mild with afternoon thundershowers
  • Winter months bring cold temperatures, often in the single digits
  • Always be prepared for winter storms as late as June in the Tetons

Spring (late April - June):

During the spring, you’ll have to be ready for some rain and the occasional snowfall. It’s not unknown to get a foot of snow in a 24 hour period during late May or early June. The lakes thaw by the latter part of May and wildflowers boom as the snow melts, usually peaking in June.

Often the winter snow and cold will last until April or May, with average daytime temperatures ranging from a high of 70 to a low of 40 degrees F.

Summer (July and August):

There will be some afternoon thundershowers or lightning storms during the summer, but the summer months are usually a bit drier than other times of year. The mountain canyons will be free of snow generally by August.

In the summer, average daytime temperatures are anywhere from 70 to 80 degrees F in lower elevations. Nights can drop into the 20s in the higher elevations.

Fall (September - November):

During the fall months, you’ll get some rain and occasional snow, with sunny days and cold nights. Sudden storms will cause a drop in temperature and snowstorms increase in frequency as winter grows near.

Temperatures average from 40 degrees F to the upper 60s during the day and nighttime temperatures can fall into the teens and single digits.

Winter (Late November - early April):

Winter in Grand Teton can be a wonderful experience, and the perfect time to visit as not many tourists come at this time. The days are sunny when a storm isn’t in full swing, and nights are, of course, very cold.

Winter temperatures usually vary between zero and the upper 20s. Overnight temperatures fall to the subzero range. Sometimes warm “Chinook” winds will push temperatures into the 40s.

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