WOW- you guys are sweltering. We normally have 10 days above 100 a summer. We are on day 21 at over 100- and the 10 day forecast doesn't have us any less than triple digits. For crying out loud-it was 110 on Saturday- the hottest July day in over 100 years of records. This heat is insane. I rode at 6:30 am on Sunday, but it was 100 when I finished at 11:30. I can't go out for my long training rides in the dark at 4 am.
We're in OK, not AZ- but I think the state is confused. This extreme heat is killing me.
I'm trying to just grin and bear it. Stick it out. I've been doing my weekday rides at 5:30- just as the sun is coming up- before work. I'd rather sweat to death than die of boredom on the trainer.

Hope it cools down for ALL of us soon. Until then, I hope you can find a way to ride and not die of heat exhaustion.