It depends on how hot it is as to what I might decide to do. If it is in the 90's, I will ride early or late. I actually really enjoy early morning commute weather-cool and quiet.

If it is 100 or more, I don't ride -at all. We are experiencing that right now in Maryland. I rode yesterday at near 100 but I won't ride today or tomorrow because it is over 100. My asthmatic tendencies really get to me in the heat.