Not all of Arizona is hot. The sheer amount of ignorance I've seen on this topic is astounding. I live in the northern part of Arizona. It's not hot. Just had loads of snow a couple weeks ago and can get as cold as 22 degrees. Doesn't get much hotter than 98 in the summer either. Now if you're talking about the central and southern parts of Arizona, there it goes above 100 in the summer. I have lived all around Arizona. How to deal with heat anywhere in the world: Just use the air conditioning or live your life at night. So tldr: All of Arizona isn't hot, people just think it is. If you live somewhere that's hot, use the air conditioner or live your life at night.