CHICAGO (WLS) -- Temperatures across the Chicago area plunged Thursday morning.

ABC7 AccuWeather meteorologists said highs Thursday would be in the upper teens.

People have been coming to the city's warming centers for temporary relief from Chicago's deep freeze. It is important to stack layers when going outside, but there's a lot that can be done at home too to stay warm under a budget.

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The low temperature Thursday morning was five degrees with below-zero wind chills, making it the coldest day since February 20.

Friday morning will have wind chills below zero again.

It's the first bitter cold of the season, serving up frigid windchills.

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"Why are we skipping an entire category going from 30 to

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