Yellowstone opens like a flower in summer, with park roads and trails ready for visitors, ranger programs proliferating and campgrounds blooming with tents and. It saves you a lot of money, on top of that it’s better for the environment. Sun can be really harsh in yellowstone. We advise using spf50 sunscreen lotion. John’s iconic season 4 quilted jacket kevin costner as john dutton, yellowstone season 4. Kevin costner has elevated several clothing. An outer layer of some sort if absolutely essential even in the summer in yellowstone. We’ve experienced freezing temperatures, especially overnight and early in the. Summer higgins is an environmental activist from portland leading a group called free earth. Summer is from out of state.