Yellowstone Day Tours Blog

Late May through early June marks calving season in Yellowstone — when cow elk become fiercely protective of their newborns. Without antlers, they rely on powerful hooves to defend against any perceived threat, including well-meaning visitors. Stay 25 yards back, watch your surroundings at Mammoth Hot Springs, and if an elk approaches, get to shelter fast.

Yellowstone is open for the 2026 season! The West Entrance and North Entrance are welcoming visitors now, with more roads opening throughout May. Spring is prime time in the park — grizzlies are emerging from hibernation, bison calves are hitting the ground, and Lamar Valley wolves are active. Geothermal steam columns rise dramatically in the cool air, and the waterfalls are running at full force. Come explore — our guides know exactly where to take you.

Photo by Yellowstone Day Tours owner and guide Brian McCooey While 64% of visitation in Yellowstone occurs between June and August, some of the best wildlife, weather, and foliage can be found in the ‘shoulder season.’ In May and early June, cool weather and hunger after a long winter means wildlife is very active. This is a great time of year to see bears emerging from hibernation with cubs, elk moving in large herds from their winter range to summer feeding grounds, and pre