Download our app for the latest weather radar, alerts
The frigid temperatures follow a major snowstorm that dumped 4-9 inches across the Chicago area Saturday, snarling traffic and canceling more than 1,000 flights.
Need help clearing snow? Check out these resources
Snow shoveling helpers
By Saturday afternoon, the snow had stopped, but lake effect snow brought a few more inches to the area late Saturday into Sunday in Lake and Cook counties in Illinois and Lake and Porter counties in northwest Indiana.
At about 3 p.m., lake effect snow continued to fall in northwest Indiana and was expected to continue for another couple hours, dropping about 6 inches in places such as Gary, Indiana.
A winter weather advisory was in effect for Porter, LaPorte, and Lake counties in Indiana until 4 p.m. Sunday.
Lake effect snow fell in northwest Indiana
Evelyn Holmes was on the roads in the ABC 7 Stormtracker in northwest Indiana Sunday morning.
Lake effect snow hammers northwest Indiana
The heavy snow impacted road and air travel late Friday and early Saturday as snow and wind gusts up to 35 miles per hour lead to poor visibility and blowing snow.
At 9 p.m. Saturday, O'Hare International Airport reported 1,092 flight cancellations with average delays of 47 minutes. At Midway Airport, there were 78 flight cancellations and a less than 15 minutes delay on flights.
Limo slides into river in Algonquin
Saturday afternoon, a United Airlines plane skidded off the runway at O'Hare. None of the 129 people on board were injured.
RELATED: United plane skids off runway at O'Hare
Saturday afternoon, some of the highest snow totals were in Waukegan (9.1 inches), Palatine (8.5 inches), Northbrook (6.4 inches), Elmhurst (5.8 inches), Midway (5.3 inches) and O'Hare (5 inches).
RELATED: My Block, My Hood, My City offers volunteer snow removal for seniors, residents with disabilities
RELATED: Chicago's Top 5 biggest snowstorms
Chicago's top 5 biggest snowstorms