I did a thread back in November that was similar:
I thought we could take another look at the issue, since the weather has grown a bit more harsh. I've ridden in about everything so far: mist, drizzle, driving rain, etc. I have driven the family battle wagon (or bummed a ride) only twice in the past 90 days. My layering has changed some, but not a lot... yet. But we haven't seen *real* winter weather so far.
One thing I do appreciate is: I much rather ride to work at 5am with temps in the teens and no wind, than ride in warmer, damper weather with a breeze.
Nothin' like a cold, clear, still and starry (and moon-lit) early morning to make me appreciate my morning commute. Dress right and it can be a very pleasant experince.