Average temperatures, rainfall, sunshine and the best time to visit Yellowstone National Park.
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Pick a month to see the average temperature, rainfall and sunshine in Yellowstone National Park - and find the best time to visit.
Depending on the time of the year, temperatures range from comfortable to very cold in Yellowstone National Park. Typically, average maximum daytime temperatures range from a comfortable 23°C (73°F) in July to a very cold -4°C (25°F) in the coolest month, December.
Nights vary from 4°C (39°F) in July to around -16°C (3°F) during the colder months.
Check out our detailed temperature page for more information.
Generally, Yellowstone National Park has a moderate amount of precipitation, averaging 738 mm (29 in) of rain/snowfall annually. The climate in Yellowstone National Park shows significant variation throughout the year. Expect moderate snowfall in March, the wettest month, with an average of 87 mm (3.4 in) of precipitation over 17 snowy days.
In contrast, the driest month July offers drier and sunnier days, with around 27 mm (1.1 in) of rainfall over 9 rainy days. For more details, please visit our Yellowstone National Park Precipitation page.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
July and August typically offer the most optimal weather in Yellowstone National Park. In contrast, January, February, March, April, October, November and December tend to have less optimal conditions. Yellowstone National Park has a distinct dry season from July to August, with warm summers and very cold winters.
Daytime highs range from -4°C (25°F) in December to 23°C (73°F) in July. Nighttime lows range from -16°C (3°F) to 4°C (39°F). Temperatures vary considerably through the year.
Annual rainfall is around 738 mm (29 in). March is the wettest month with 87 mm (3.4 in), while July is the driest with 27 mm (1.1 in). In the coldest months, precipitation may fall as snow.
Yellowstone National Park is highlighted - select any city to see its climate.
Where to go in October - average daytime high across popular destinations.
Miami Beach
29°C (84°F) Orlando29°C (84°F) Kissimmee
29°C (84°F) Destin26°C (79°F) Los Angeles24°C (75°F) New York City19°C (66°F) Big Bear Lake19°C (66°F) Need travel inspiration? Check out our bucket list articles and be inspired.
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