A wintry feel as the holiday approaches

As residents of northern Porter and La Porte counties in Northwest Indiana dig out of up to two feet of lake-effect snow, northeast Illinois will experience a period of lighter snow today that might accumulate an inch or so, primarily in areas north and northwest of the Chicago metro area.
Low pressure will move northeast up the Mississippi and Ohio valleys midweek, spreading cloud cover over Chicago with a chance that at least the eastern portion of this area might pick up some snow. As the low center pulls away, gusting northwest winds and the coldest air of the season will flow into northern Illinois. If an inch or two of snow cover is on the ground, Friday morning lows could be well below zero and daytime highs restricted to single digits, resulting in dangerous wind chills in the -20° to -30° range.
Paul Dailey, WGN-TV Meteorologist