Wasn't cold at all, jeans and a hoody was all we needed. Only complaint I had of the whole trip was trying to find the rocks in st. Helen, there wasn't much for markings or any sort of signage to indicate where to go.
I've owned multiple jeeps, mostly in the 33-36" tire range, tj's, xj's, yj's, and a stock wj. The rzr's were hands down WAY more fun yesterday, they crawl, they climb, they go fast, they go thru mud, snow, sand, etc
Had a great time.