yes definately get your antifreeze checked, last I checked minnesota gets pretty chilly
You can get some stuff called windshield washer antifreeze, there's some stuff that can actually help clean off the ice off your windshield for us lazy people that don't want to scrape
as a tip its usually a good idea to keep a bag of rock salt or sand in your trunk. Especially if you have rear wheel drive, it adds weight to the car for better traction, and even better if you get stuck you can put that down for a little bit of traction.