Just when the McHenry County region had dug out of the snow, another round is in the forecast. Chances of snow will begin late Wednesday night into Thursday and could continue on and off into Saturday, National Weather Service Chicago meteorologist Kevin Donofrio said. "It looks like this could be a prolonged period of somewhat lighter snow," Donofrio said. Overnight lows during this time will be in the mid to upper 20s, he said. Freezing temperatures will continue into the weekend with the possibility of light snow beginning on Thursday and into Saturday morning, according to the NWS. Monday started mostly sunny with a high of 22 to 25 degrees and lows around 5.