better hurry up - your summer plateau is almost here!

You can bike through the winter; you'd be surprised how much fun it can be. There is a forum here where folks will let you know how to do it, but essentially you just wear some wicking layers. I commute 30 miles r/t down to around 20F. I cheat a bit by having electronic toe warmers and gloves, but you actually end up wearing less clothes than if you were just walking around. After two miles or so I start opening zippers on the windbreaker because it's getting too hot. I pass many a bus stop where people are freezing and I'm opening zippers.