Yellowstone National Park has 4 seasons that can change at any time. Summer is for eating…. Fall is for mating… Winter is for surviving ….and Spring is for re- birth. Yellowstone National Park has 4 seasons that can change at any time. Summer is for eating…. Fall is for mating… Winter is for surviving ….and Spring is for re- birth. Yellowstone National Park has 4 seasons that can change at any time. Summer is for eating…. Fall is for mating… Winter is for surviving ….and Spring is for re- birth. Yellowstone National Park has 4 seasons that can change at any time. Summer is for eating…. Fall is for mating… Winter is for surviving ….and Spring is for re- birth.