I parked outside over the weekend and this morning when I went out to my car at around 8am all of the windows were wet and fogged up. The windshield wipers cleared off the condensation but the rest of the windows were still very hard to see through. It being cold I didn’t really want to get out and wipe them off so I turned on the rear defroster and put both of my windows down and then up again. The strange thing was that the windshield got all fogged up again within a few seconds of clearing it off with the wipers. After a few minutes, it cleared up, but I’m thinking I’ll start parking underneath from now on (if there’s a spot).