I just wear all of the gear and not think about the heat.
After a few wrecks I won't even think about getting on the bike without full gear. Last week it was in the low 90's and I rolled up to a non-rider friend. He typically asked me how I can stand to be in all that gear? Simple reply, it's better than the alternative. And if you haven't experienced the alternative I can post up a few photos for you all.