The bitter cold is so severe it has already sent people to the hospital, including an 11-year-old girl.
The child walked from school with a friend on Cleveland's east side, and she suddenly found she couldn't move her fingers. She had gloves on, but they were thin.
The friend's family called 911.
A Cleveland EMS crew found the situation serious enough to take the girl to the hospital. Doctors said it didn't quite get to frostbite stage, but they sent the girl home with special packs to warm her hands more.
Cleveland ambulance crews in recent days have also take a 74-year-old woman to the hospital for exposure to the cold, as well as a 38-year-old woman and a 55-year-old man.