10 coldest cities based on average winter low temp:
1. Minneapolis, Minnesota 11
2. Denver, Colorado 18
T2. Milwaukee, Wisconsin 18
4. Chicago, Illinois 19
5. Rochester, New York 20
6. Buffalo, New York 21
T6. Hartford, Connecticut 21
T6. Detroit, Michigan 21
T9. Indianapolis, Indiana 23
T9. Salt Lake City, Utah 23
T9. Pittsburgh, Pennsylvania 23