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.