You're as cold as ice

"Temperatures in the wake of a stubborn weather pattern that dropped several inches of snow could be summed up in a single word: brutal. At 7 a.m., O'Hare International Airport recorded a temperature of -15, breaking a record low of -14 set on this date in both 1894 and 1988. By 8:30 a.m., the official Chicago temperature had dipped another degree, to -16.  With the wind chill factored in, Monday's temperatures were in the -40 to -50 degree range and even lower across the Fox Valley.  By midday, the lowest recorded wind chill was in Aurora, at -47 degrees. DuPage and Porter recorded -46 degrees and O'Hare reported -42 degrees."
Source: http://www.nbcchicago.com/weather/stories/Dangerous-Cold-Temps-Chicago-238467651.html