An iced-over Lake Michigan is shown in this photo from February 2015. (Great Lakes Surface Environmental Analysis (GLSEA))
Ice forms along the shore of Lake Michigan, Thursday, Feb. 19, 2015, in Chicago. (AP Photo/ Kiichiro Sato)
Joe Gasbarra sits along the icy shore on Lake Michigan, Thursday morning, Feb. 19, 2015, in Chicago. (AP Photo/ Kiichiro Sato)
The sun rises on Lake Michigan as ice forms along the shore, Thursday, Feb. 19, 2015, in Chicago. (Photo/Kiichiro Sato)
Ice forms along the shore of Lake Michigan, Thursday, Feb. 19, 2015, in Chicago. (AP Photo/ Kiichiro Sato)
Ice forms along the shore on Lake Michigan, Thursday, Feb. 19, 2015, in Chicago. (AP Photo/ Kiichiro Sato)
Ice forms along the shore of Lake Michigan, Thursday, Feb. 19, 2015, in Chicago. (AP Photo/ Kiichiro Sato)
Ice forms along the shore of Lake Michigan, Thursday, Feb. 19, 2015, in Chicago. (AP Photo/ Kiichiro Sato)
Ice forms along the shore of Lake Michigan, Thursday, Feb. 19, 2015, in Chicago. (AP Photo/ Kiichiro Sato)
Ice forms along the shore of Lake Michigan, Thursday, Feb. 19, 2015, in Chicago. (Photo/Kiichiro Sato)
Ice fills the Calumet River Thursday, Feb. 19, 2015, in Chicago. (AP Photo/ M. Spencer Green)
A cyclist braves frigid temperatures Thursday, Feb. 19, 2015, in Chicago. (AP Photo/ M. Spencer Green)
Ice forms along the shore on Lake Michigan, Thursday, Feb. 19, 2015, in Chicago. (AP Photo/ Kiichiro Sato)
The sun rises on Lake Michigan as ice forms along the shore, Thursday, Feb. 19, 2015, in Chicago. (AP Photo/ Kiichiro Sato)
Ice fills the Calumet River next to a yacht yard Thursday, Feb. 19, 2015, in Chicago. (AP Photo/ M. Spencer Green)
Ice forms along the shore of Lake Michigan, Thursday, Feb. 19, 2015, in Chicago. (Photo/Kiichiro Sato)
A runner jogs along Lake Michigan as ice forms on the shore Thursday, Feb. 19, 2015, in Chicago. (AP Photo/ Kiichiro Sato)
The sun rises above Lake Michigan, Thursday morning, Feb. 19, 2015, in Chicago. (AP Photo/ Kiichiro Sato)
Ice fills the Calumet River Thursday, Feb. 19, 2015, in Chicago. (AP Photo/ M. Spencer Green)
The sun rises on Lake Michigan as ice forms along the shore, Thursday, Feb. 19, 2015, in Chicago. (AP Photo/ Kiichiro Sato)
CHICAGO (WLS) -- Bundle up! It's cold out there. Chicago weather has been brutally cold this winter.