In terms of lubrication for temps not much lower than 40, just keep doing what you've been doing (assuming you have been doing something that works). Your big enemy on winter rides isn't going to be the cold, it's going to be the crap road crews spread around to melt the snow. Plan on cleaning your chain more often, like every ride. Once they start salting/sanding the roads, you'll pick up a ton of grit and your chain will deteriorate very quickly. Also, keep an eye on your brake pads which will wear out much faster, and can pick up grit as well and score the braking surfaces on your rims.