Green Bay, Wisconsin – A colder late-January pattern is expected to bring an increased risk for lake-effect snow across parts of Wisconsin, particularly near Lake Michigan and Lake Superior as the month comes to a close.
According to the National Weather Service Climate Prediction Center, outlooks covering January 17 through January 30 favor below-normal temperatures across the Upper Midwest, with precipitation signals trending near to above normal at times. That combination often supports lake-effect snow when cold air repeatedly moves across open lake waters.
In eastern Wisconsin, areas near Green Bay, Door County, and the lakeshore corridor could see periodic lake-effect snow bands develop when winds turn northerly or northeast off Lake Michigan. Farther north, communities downwind of Lake Superior may also experience snow showers that persist for hours under favorable wind conditions.
Travel could become hazardous during stronger lake-effect events, especially along I-43, Highway 57, and rural roads where visibility can drop quickly. Snow-covered and icy conditions are most likely during overnight and early morning hours.
The colder pattern appears likely to hold through late January, and residents should be prepared for rapidly changing weather conditions. Additional winter weather advisories may be issued as the end-of-month setup becomes clearer.
