Travel - Off Season Travel
Peak season in Yellowstone starts at the end of April and will run until about mid-September.
The best months to visit Yellowstone are April, September, and October.
When to book: "Wave" season (waves of deals and promotions) generally starts in January and concludes at the end of March.
Late March and April. After spring break.
Jan and early Feb. Right after holiday season and before spring break
September and October.
June to August.
January and February.
July to September.
October to March. Averages temperatures in the 50s and low 60s.
April and May.
November to February.
February to April.
January to April.
June and July.