Chicago, Illinois – A colder late-January pattern is expected to bring renewed winter weather concerns to northern Illinois, including the potential for lake-effect snow impacting the Chicago metro area as the month comes to an end.
According to the National Weather Service Climate Prediction Center, outlooks for January 17 through January 30 favor below-normal temperatures across the Great Lakes region, while precipitation trends point toward periodic snow chances. When colder air moves across Lake Michigan, conditions become favorable for lake-effect snow to develop and push inland.
In northeastern Illinois, shifting winds could allow lake-effect snow bands to reach Chicago, Evanston, and nearby suburbs, particularly during northwest or north flow events. While these snow bands are often narrow, they can be intense, leading to sudden drops in visibility and slick road conditions along I-90, Lake Shore Drive, and other major commuter routes.
Farther inland, snow showers may be more intermittent but still impactful, especially during peak travel times. Even brief lake-effect events can create hazardous conditions with little warning, especially overnight or during early morning hours.
Residents are encouraged to remain weather-aware late this month, prepare for changing road conditions, and allow extra travel time when snow develops. The colder pattern is expected to persist into late January, and additional winter weather advisories may be issued as confidence increases closer to individual lake-effect setups.
