Lights & layers will keep you riding outside through the winter, so long as the road/trail conditions are safe (no ice or snow). A good headlight and taillight, and warm clothes are the key. To be honest, I hate the first few really cold rides when the temps are below freezing, but my body eventually acclimates. You might find yourself really enjoying riding after dark, too. Last year, around the Holidays, it was a treat to ride when folks had their houses decorated with lights. Plus, if you ride trails, you'll usually have it all to yourself or you'll share it with the more experienced, trail savvy folks who know and obey the rules.