As Illinoisans return to the office after the holiday season, their Monday blues might be further magnified by lake-effect snow on the tail end of a major, disruptive snowstorm that slammed the central United States and by below-normal temperatures later in the week.

From Friday afternoon into the evening, moderate to potentially heavy snowfalls are possible, gradually decreasing late Friday night into Saturday morning. Quieter weather is expected for the rest of the weekend.