Duluth, MN – Northern Minnesota will stay warmer than normal through the end of September, but a shift in the weather pattern could bring frost and cooler temperatures by mid-October, according to the National Weather Service in Duluth.
The agency’s latest outlook shows above-normal temperatures across Minnesota from September 29 through October 5, with much of the state seeing a strong probability of warmer conditions. According to the National Weather Service, this trend is likely to carry into the first several days of October.
By the second week of October, however, the pattern begins to change. Forecasters say there is a 50 to 55 percent chance of below-normal temperatures developing across the Upper Midwest, including Minnesota, Wisconsin, and the Dakotas. The shift could signal a return to more seasonable fall weather, with increased chances of frost and freeze events.
While temperatures are expected to swing, precipitation is forecast to remain near to slightly below normal during this period. That means drier conditions may continue even as cooler air settles in.
Meteorologists note that this outlook represents probabilities, not certainties, but it does suggest residents should prepare for the possibility of early-season frost in October after several weeks of unseasonable warmth.
