Good morning, Chicago! 🥶 The city woke up with sub-zero temperatures and wind chills as low as -20 and -30 degrees on what is expected to be the city's coldest day in years. As the sun rises, NBC 5 meteorologists say the cold will become even more extreme. 🧊⁠ 📸: georgemycyknbc ⁠ #cold #weather #chicago #winterstorm #chicagowinter