Josh, seen here, is gettin' it done in the Diablo Valley on a rainy cold Thursday morning. This picture is a bit blurry because of my slippery hands but you can still make out the fact that he's not on a sport ride. He's getting somewhere he needs to be on a weekday. And he's doing it without a fancy rain suit. The only extravagance seems to be the plastic bag on the seat (such a lush life).
Many would-be commuter cyclists cite weather as an impediment. This scene and others I've found, like in Jackson Hole, demonstrate that weather is just not that big a deal for cyclists. I'm gonna try to prove that for myself in Whistler in a few weeks but I'm waiting for the studded tires to arrive.