Originally Posted by
PlanoFuji
What ever clothing you wear outside in the expected weather is all you need to bike commute in that weather. Although I find my feet a hands get colder riding than they do walking in the same weather, though that may be psycho-sematic.
As someone mentioned above, I like wool layers.
But you're expending much more energy on a bike than you do walking or just standing around. If you're standing or walking, you can carry an umbrella in the rain. Not so much on a bike. Also you don't generally break a sweat in the cold while just walking or standing around, but you very well might on a bike, which presents its own set of challenges.