Start by popping the hood to check the wiper fluid level. Car Talk recommends keeping your windshield washer reservoir full during the cold months so you can keep your windshield clear even on the snowiest days. If you live in an area where temperatures get extremely low, you may need deicer or concentrate for your windshield wiper fluid, Car Talk says.

Since oil's viscosity is affected by cold temperatures, you may also need to switch to a winter-grade oil, according to Popular Mechanics. Your engine's oil becomes thinner as the temperature rises, so in warmer climates, a thicker, higher-viscosity oil will help keep your engine properly lubricated. For the same reason, heavier oils aren't as effective in cold, blustery conditions. Check the owner's manual to be sure you're choosing the right kind or talk to your mechanic.

While you're checking your fluids, it doesn't hurt to inspect some other odds and ends under the hood that may fail in extreme conditions. For example, seasonal changes are a good time to make sure your cooling system is in working order, your battery is charged and the rubber of your vehicle's hoses is in good shape, according to the National Highway Traffic Safety Administration (NHTSA).