"Yellowstone is one of the U.S. national parks that offers a completely different experience each season. Summer is notable for its sightseeing, hiking, and camping opportunities, but you can expect 'great wildlife viewing as fall sets in,' says Wade. It’s important to note, however, that snow is definitely possible this time of year. Always check the forecast before setting off into the park and make sure you’re driving a car that can handle inclement weather." - Travel + Leisure Editors