Yellowstone National Park high season is summer, from June through August.
This is arguably the best time to visit if you want warm weather and long daylight hours.
Daytime highs average 70-80°F, perfect for hiking and sightseeing. Wildlife like bison, elk, bears, and wolves are actively raising their young.
Popular attractions and roads are completely open.
And wildflowers bloom in summer, adding gorgeous color to the scenery.
Just be prepared for big crowds and book lodging well in advance.
For thinner crowds, lower prices, and cool crisp weather, aim for May/early June or September/early October.
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