At -28F or so in a strong wind door hinges will definitely frost over on the inside. The wind is downright painful on any exposed skin, diesel fuel turns to jelly and cars just quit working. I don't miss that part of it at all.
Once, back in the late '70s, a friend and I drove up to the Smokys for a winter backpack. The snow cover wasn't bad, but the temps started a nosedive. As it approached zero, we booked a room in the little motel the Nantahala Outdoor Center owned across #64 from them and by Turkey Creek. It kept getting colder. I think it finally hit something like -16. I watched Turkey Creek, a whitewater creek, freeze, rapids and all. I was driving a diesel Mercedes. Fortunately it was stick and they got us started by towing us up to 40mph. A dump truck driver with a load of salt bound for Robbinsville, NC booked the room next to us - and turned off his truck. When we left, they were blasting his
crankcase with a torch. I asked him if he thought he'd get out that day and he had a can of oil in his hand. He turned it upside down and it glopped out like chocolate pudding...
