Across the Corn Belt, a cold front extending from Lake Superior to northwestern Missouri is the dividing line between cold air in the upper Midwest and ongoing warmth farther east. Friday’s high temperatures will range from near the freezing mark (32°F) in the Red River Valley of the North to 80°F or higher in the lower Ohio Valley. Damp conditions from earlier rainfall and spotty showers are slowing fieldwork, including winter wheat planting and summer crop harvesting.
