I applaud you for that. I lived in Phoenix most of my life and I wouldn't be caught dead on a bike in the middle of summer, even if it did have a motor on it.I ride all year, summer, winter...even in the rain...no matter the weather I ride at least to work and back...sorry, no snow out here.
I can say at temp's above 105, I lose alot of power. But that goes for any motor.. the cooler the air, the more hp you can make