(MCT) — Brace yourself and bundle up.
After a night when temperatures dipped to the low single digits, "they're not going to move a whole lot today," said Mark Ratzer, a meteorologist with the National Weather Service.
Temperatures may not break 10 degrees today, Ratzer says, and if they do, it won't be by more than a degree or two. A wind chill advisory issued Monday remains in effect until 10 a.m. this morning.
At 8 a.m., it was minus 1 degree at O'Hare International Airport, with a wind chill of minus 14. This is the first time since Feb. 10, 2011 that a subzero temperature has been recorded in Chicago. The streak of 711 consecutive days without a subzero temperature was the fourth longest on record, according to Richard Castro, also a meteorologist at the weather service.
If there's good news, it's that the wind won't be quite as strong as it was Monday when wind chills plummeted into the negative teens.
It won't be as cold as it was on Jan. 22, 1936, when a low temperature of 17 degrees below zero set Chicago's all-time record.
That's about where the good news stops. The cold will linger for several days, and temperatures are not expected to top 32 degrees until early next week, Ratzer said.
The overnight low of 4 degrees was the coldest since Feb. 10, 2011, when aided by a heavy snow cover, temperatures dipped to 9 below zero.
Over a 30-year period, the average temperature high for Jan. 22 is 31 degrees and the average low is 16.
Authorities reported no overnight deaths from the cold, though today's temperatures remain dangerous for anyone spending prolonged periods outdoors.
At least seven people in Cook County have died from causes related to the cold this season.