I could not do it. Literally. I take an auto whenever the temps. reach into the high 80's, use plenty of A/C, and cannot imagine riding a motorcycle in triple digit temps. no matter what.
A friend of mine is somewhere down there where you are and as a Chicago transplant, he cannot tolerate the high summer temps. either. He uses a cooling vest and a container of ice / water to ride. He says it is good for about 3- 4 hours, then he restocks on ice and keeps going. Says it does not make him comfortable but it does make riding tolerable.
I am sitting in an A/C'd room right now, cooling off, because it is 79 outside.
And I never bought in to that 'it is a dry heat' either; my oven is a dry heat and yet the turkey carcasses do not thrive in there. But seriously, I simply cannot imagine doing physical labor, even light labor, when it is hot outside and hot to me is 80F. I even mow the lawn late in the day (often finishing with headlights on and needed) to avoid the higher temps. of the daytime.
On the other side of the coin, cold temps. are no problem. Dressed reasonably well, I can and have ridden a motorcycle down to 11F and had a good time doing it.
Brian
I commute every day on a bike in triple digits. You wouldn't like it here... for that matter neither do I.