Worth stopping in Yellowstone Park at end of October?

Rump seasons are our favorites. We were through there in mid September and it was still a bit busy. Weather is chancy by end of October but check the forecasts. Probably still have Elk bugling up around Mammoth. The opportunity to enjoy it without traffic jams and bus loads of tourists from around the world is too good to pass up. One year we woke to fresh snow in mid September and it was magnificent. Snow covered bison just like in the travel photos.