Yellowstone NP in early Sept
I just got off the phone with Yellowstone Lodge Reservations because I was having a hard time locating a campsite in early Sept. I ended up getting a 4 day stay at Bay Bridge Campground. It turns ou...
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You are going in the right time of the year. If you need more time in Yellowstone, Mammoth and several other park campgrounds are first come-first serve, no reservation needed. Show up on the morning you want to camp, especially in Sept/Oct and you will likely get a site. Once on the site, you can stay up to 30 days. We stayed for 7 days in Mammoth campground in mid Sept/18, I didn't notice anyone get turned away if they arrived by 11:00 am. Mammoth is nice, all pull thru sites, and the very helpful campground staff will get you into the right length of site you need. If you go to Mammoth, don't be alarmed if you pull into a short line up as is normal every morning.
