We're driving from New Jersey to Yellowstone with stops at Badlands, Mt.Rushmore, Cody, and then into Yellowstone. From Yellowstone we will continue to Grand Teton, on our way back home we'll stop by...
Yellowstone gets at least some snow every month except July and August. Even though it usually melts quickly, its still cold. Take warm clothing, just in case. Average temp is in the 40's.