My daily commute is 32 miles. As often as possible I do this on a bike. In the winter
this is a pain. The biggest thing is; it adds to my commute and preparation times. I find that in general, poly pro covered by wind pants and a wind breaker works well. The only thing I change in winter weather because of temperature are gloves and footwear.
The other day when the temperature was -4F I wore winter boots but my toes still got cold. I decided that my Power Grips were too tight for those boots and were cutting off my circulation, so I bought XL's. In my other shoes this was not a problem. My winter bike is just an old beater that I bought used for $100. I didn't want to mess up my good bike in the snow and ice, but more than that I didn't want to have to change tyres. I put Nokian Mount and Ground tyres on both Front and Rear. This improves handling
immensely. I have been on icy places where standing was difficult, but riding was not a problem. I have been called several variations of nuts, goofy, and crazy by those who don't ride, but there seems to be some admiration (even awe) in this. I seem also to impress those who ride only in the warmer times of year.