Check tire pressure - Cold weather will cause your tires to lose pressure slightly. Add air to get your tires in the 32-38psi range.
Check your spare tire's pressure - There's nothing worse than going to change a flat tire and realizing your spare is flat as well. Make sure it's at an appropriate pressure level.
Check and aim your lights - Shorter days means lights get used more often. Make sure all your bulbs are working, and check to see if your headlight beam pattern needs adjusting.
Check antifreeze - Make sure your car has an adequate amount of antifreeze. It doesn't get that cold in the Triad, but antifreeze is needed anyways.
And if you're not a DIY-er, Foreign Accents can quickly check all these areas and more to make sure your car is adequately winterized!