CHICAGO - Temperatures on Sunday are in the single digits during the day and will remain so on Monday and Tuesday to start the workweek. Fox 32 Meteorologist Mark Strehl has the forecast. Bitter cold temps What we know Overnight low temperatures will be diving to about 5 degrees below zero.

The City of Chicago advised residents to be prepared for lake-effect snow overnight, along with cold weather throughout the week to come.

Early morning commuters will want to be alert for icy road conditions as a wintry mix of snow and freezing rain moves in on Monday morning.

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.

While some areas won't see much snowfall or any at all, a band of lake-effect snow is expected to develop starting Sunday night, possibly dumping several inches of snow in far northeastern Illinois.

As Chicago Public Schools students wrap up a two-week holiday break, snow could welcome them back into the classroom on Monday. Meanwhile, South Shore high-rise residents dealt with a power outage amid sub-freezing temperatures Sunday.

Lake-effect snow is going to be the worry most of the day in Chicago and even into the early evening hours as well.

The city has opened several warming centers for public use amid lake-effect snow and freezing temperatures this week.

Untreated roads will be slippery as freezing drizzle sets the stage for more snow to come, a local meteorologist said.

Some areas of the U.S. may see temperatures as low as -20 or -30 degrees early next week as arctic air from Siberia rolls in.

Winds out of the north-northwest will bring persistent snow bands to the immediate lakeshore tonight with a widespread 1-3" of snow expected along US-31 by tomorrow morning. Winds shift to become northwesterly Sunday which will allow for lake-effect snow to spread further inland, though most snowfall will stay west of US-131.

A polar vortex is slated to sweep most of the continental US bringing winter storm warnings and a hazardous freeze to millions.