Basic Park Information Weather and Seasons When is the Best Season to Visit Great Smoky Mountains National Park? Rhododendrons in bloom on the Alum Cave Trail in Great Smoky Mountains National Park Rhododendrons in bloom on the Alum Cave Trail in Great Smoky Mountains National Park Share this Facebook Icon Twitter Icon Email Icon Join Great Smoky National Park Trips Create a personalized feed and bookmark your favorites. Join for free Already have an account? Sign In Join Great Smoky National Park Trips Create a personalized feed and bookmark your favorites. Join for free Already have an account? Sign In Photo: Andrea Neal