Interesting point. I'm on the west coast, and our summers tend to be much hotter, and winters much colder. So I suppose, not only bike friendly roads are needed, but also a whole biking culture would need to be established to allow employees to change into work clothing from weather sensitive bike gear... hmmm, complexities...
I may have been engaging in some mild hyperbole there, but one big reason I got the hell out of Sacramento and now live up north in blissfully cool, shady, overcast Seattle was that I couldn't stand the 100F-plus summers. It's hard enough just enduring that kind of heat; getting out in the sun and sweating on your way to/from work is just... not something I would ever do. But maybe LA is not as bad as the Central Valley, I don't know.
