The snowbelt cities of Chicago, Milwaukee, Madison and Ann Arbor have well-attended Bike Winter events to promote winter bike riding. The Bike Winter folks host rides through snowy city streets, have parties and conduct workshops on how to winterize your bike and build homebrew lights and fenders.
I've just discovered that wintry Los Angeles, California has their own Bike Winter event occuring the week of February 2-14. Angelinos tell us to "Bring on the spandex, the cupcake rides, the hot cocoa tours, the crack of dawn sprints, all night detournements, trail rides, urban exploring, suburban terrorizing, hill racing, ruckus brewing, psychogeographical, costumed freakshows and more." The weather forecast for the rest of the week calls for dreadful sunny skies and bone-chilling highs in the low 70s F (low 20s C).