Used to walk to school in those temps. No big deal.
Mom had to drag us in...Snow forts protected you from the wind .
It was a mile to my high school one way. Walked that distance and back every winter in Rochester, N.Y, from 8th grade until I graduated in 1965. Back then, girls couldn't wear slacks to school, so we were in dresses, and skirts and blouses every day. I was also on varsity cheer squad from 10th grade on, so had to go to every football and basketball game our varsity teams played on Saturdays, and after school.