Temperatures are expected to fall to the single digits and mid-teens early Monday morning, with high temperatures in some areas set to plummet 20 degrees from Sunday. Monday’s highs should be in the 20s, with wind making it feel much colder.

Chicagoland is in the deep freezer to start the week, with a Cold Weather Advisory in effect until Tuesday morning. It's a dangerously cold start to Monday, with air temperatures hovering in the single digits to below zero and wind chill values ranging from minus-20 to minus-25.

The cold Arctic blast lasts about 48 hours longer for the Chicago area, then a warming trend starts. Tuesday morning's temperatures remained cold, with overnight lows falling near zero. The brisk wind will send wind chill values towards -10° to -20° late Tuesday night and through early Wednesday.