Historically , even armies at war would very rarely fight in winter , but would rather pick an area to ride it out , sometimes within sight of each other . The reasons were mainly bad supply chain , and difficulty of movement . Something that didn’t change until WW1 . For a person in SHTF , the problems with movement and logistics would be the same as in the past . Just getting around is slow as well as difficult . Lot of people die , trying to walk to the nearest town , when their car breaks down in a winter storm .
