If it's really hot out, a cold shower. If it's in the 70s, a moderate temperature. When it's cold enough that snot rockets freeze midair and shatter on the ground, a shower just won't cut it. I either take a super-hot bath or jump in the hot tub for a good 20 or 30 minutes until my skin doesn't feel like I just sat naked in a meat locker for the last couple hours. Then a moderate temp shower to actually soap up and clean off.