The key to hot riding is take that freaking windshield off. I went 8 hours straight last summer in 95 degree high humidity on back roads with no shield. As long as you keep drinking water you are good. Just not enough air flow in that kind of heat with a shield.
I love hot weather, and never ride below 65 degrees. Yea; it can get cold occasionally in Florida, & i like to ride in Just a t-shirt. And, any hot chick that asks me for a ride in cold weather is gonna be wearing too many clothes anyway. And I won't have my spare helmet with me.
I enjoy the desert summer nights. You have everything to yourself. I do my best to get my rest during the hottest hours and work or ride when it is cool.