Prepare for turning leaves, brisk mornings, and a whole lot of fun. September in the mountains is beautiful, has tons of options for adventure, but is just a little unpredictable. Bring layers and get ready.
A note: to skip the line to get into the national park, purchase your Parks Pass in advance!
5 The elk rut starts
With autumn comes a wildlife event that is both fascinating to watch and dangerous if you get too close. Throughout the park, male elk enter into a phase of the year called "the rut" when they begin to fight with other males for dominance. During this period, the animals are extra aggressive and unpredictable and people should be sure to keep extra distance from them. For safety, we recommend going with one of the excellent wildlife tours.