Ashlee Rezin Garcia/Sun-Times After a month that saw Chicago smothered under an endless blanket of snow and sub-freezing temperatures, residents might be tempted to break out their shorts and fire up the grill as temperatures are expected to soar into the mid-50s this weekend — and even near 60 just an hour south of the city. After a brief spell of rain and snow on Friday night, temperatures could reach a high of 50 degrees on what is expected to be a sunny Saturday, according to the National Weather Service. On Sunday, temperatures could climb even higher to 54 degrees during the day, bef...