Cutting off my hair soon

So it's 90 degrees in Georgia and I hate the heat. So in order to stay cool a bit better, I'm going to get my hair cut. I just got off work,  so I have a while before I get to the station where there is a hair place I can get my hair cut at.
I'm actually thinking of just shaving all of my hair off, but I don't own any  hats to cover my head so people don't think I have cancer or something yet