The National Weather Service issued a wind chill advisory Wednesday for all of North Dakota, Minnesota and Wisconsin, and parts of Montana, Wyoming, South Dakota, Iowa, Illinois, Indiana and Ohio.
Fargo, North Dakota, was four below zero early Wednesday, while Duluth, Minnesota was two below zero. Highs Wednesday will range from 20 to 30 degrees below average. Temperatures will remain well below zero in Minnesota and Wisconsin on Wednesday night.
The Arctic cold is expected to spread across the northeastern United States while the Midwest remains frigid through the work week, forecasters said.