Full forecast details and more at the WGN Weather Center blog
A Frost Advisory has been issued for several counties for overnight.
The advisory runs from midnight to 8 a.m. Wednesday and includes DeKalb, La Salle, Lee, Ogle and Winnebago.
Protect outdoor plants with coverings or bring them inside.
Wednesday’s high should eventually reach 60 degrees with a 30% chance for showers.