Agree. And at the higher end of the temperature spectrum, I've commuted on my bike all through the summer in Austin, Texas, when the temps are routinely 40-43C.

Agree. And at the higher end of the temperature spectrum, I've commuted on my bike all through the summer in Austin, Texas, when the temps are routinely 40-43C. Not for everyone, as I had a place to shower and change when I got sweaty, but more <6 mile trips could be made by bike.