^^^ what he said. Dealers and even private party sellers know that they can command a premium for capable vehicles during the winter months. It's as simple as people are willing to pay up for the added security of 4WD, or in our case, AWD.
I would wait until the spring when everything starts to thaw and more people are looking into FWD or RWD fun cars and not thinking about AWD. That way you stand the best chance of getting the best deal (similar to buying a motorcycle in the winter).
Best of luck, and now that you have time before you buy, be sure to do your research!