It's completely white outside - I guess it's too cold for them to use chemicals to keep the pavements completely clear.
I've been biking around in the snow, 'cause I'm not wearing boots and really don't want to get my socks wet. And it's still faster than walking. It's a bit hard in patches of snow as deep as my shoe. Impossible in ones deeper. But just slightly difficult in stomped on areas. That, and it's fun. It requires more control on the bike, and being able to readjust when you lose full control over a wheel after hitting a higher patch of snow.