I fondly remember my first winter in Riverton,Wyoming (1992).We had a week or 2 of -40 degree F temps.It would warm up to like -10 in the warmest part of the day!!! Had to get block heaters for the vehicles ASAP. My ex used to have to be to work at 6am and before I got a block heater on her Camry....the rockers would clatter for close to a full minute. That was some cold sh!t that I hope to never live in again!!!!