If you haven't much experience with snow and ice, here are a couple of tricks if your car has to be parked outside. #1 After you've driven for awhile & the inside is warm, when you park your car ice will freeze around your wiper blades & they'll stick to the windshield. To stop this, pull the wiperblades out like you were going to clean the bottom of your WS. There is a lot less wear & tear on your blades. #2 Snow piles up on your windshield. Cut a large piece of plastic material to fit your WS.
Park your car, cover your windshield with the plastic - your damp/wet WS will make the plastic cling, then freeze, to the window. Return to the car, get in & warm as usual. The heat will melt the ice. Remove plastic & you'll have a clean WS.You'll stay warm because you're not scraping snow.