I live in eastern Oregon where it gets into the triple digits quite often in the summer, but the humidity is relatively low. I've been shooting CC almost my whole SASS career (started shooting in 2004). I generally wear everything but the chaps all the time. Cuffs, spurs, wild rag, suspenders, sleeve garters, a couple of knives, vest, etc. Not sure why on the chaps, I just never have worn them. All that having been said, one thing nobody has mentioned is wild rag material. I've found that pure silk wild rags work pretty well at keeping my neck, and thence my head, relatively cool without needing to have water added to them. I tend to avoid synthetics and cottons as much as possible for that reason. And I make sure that I drink a lot of water.