Weather

Summer
Daytime temperatures are often in the 70s (25C) and occasionally in the 80s (30C) in lower elevations. Nights are usually cool and temperatures may drop below freezing at higher elevations. Thunderstorms are common in the afternoons. Learn more about Visiting Yellowstone in Summer...

Winter

Temperatures often range from zero to 20F(-20 to -5C) throughout the day. Sub-zero temperatures over-night are common. The record low temperature is -66F (-54C). Snowfall is highly variable. While the average is 150 inches per year, it is not uncommon for higher elevations to get twice that amount. Learn more about Visiting Yellowstone in Winter...

Spring & Fall

Daytime temperatures range from the 30s to the 60s (0 to 20C) with overnight lows in the teens to single digits (-5 to -20C). Snow is common in the spring and fall with regular accumulations of 12" in a 24 hour period. At any time of year, be prepared for sudden changes. Unpredictability, more than anything else, characterizes Yellowstone's weather. Always be equipped with a wide range of clothing options. Be sure to bring a warm jacket and rain gear even in the summer. Learn more about Visiting Yellowstone in Spring and Visiting Yellowstone in Fall...

 

Weather Forecasts

 

Month

Average Maximum Temperature (F)

Average Minimum Temperature (F)

Average Precipitation (Inches)

Average Total Snow Fall (Inches)
Jan 28.6 9.6 1.1 14.5
Feb 34.0 13.0 0.75 10.4
March 39.6 17.2 1.1 13.1
April 49.4 26.0 1.2 5.9
May 60.4 34.3 2.0 1.5
June 70.0 41.2 1.5 0.1
July 79.6 46.7 1.5 0.0
Aug 78.3 45.3 1.4 0.0
Sep 67.8 37.0 1.3 0.5
Oct 55.7 29.4 1.0 3.7
Nov 38.7 19.2 1.0 9.0
Dec 30.5 11.8 1.0 13.5
Annual 52.8 27.6 15.4 72.1
 

More Information

  • Official Park Newspaper: Current seasonal information on Yellowstone.
  • Weather vs. Climate: Climate consists of the long-term averages of daily weather, usually in 30-year periods. Yellowstone's climate is changing.
 

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