Heavy winds are impacting the region today, with gusts up to 33 mph possible in Shelton during the day. Sustained winds should be from 18 mph to 20 mph in the region on Monday, according to the National Weather Service (NWS). The winds should begin to weaken overnight. The NWS has issued a formal Wind Advisory for three upstate Connecticut counties today through 7 p.m., where wind gusts could be as strong as 50 mph. The winds are part of a cold front moving into the area, which should bring light snow into southwestern Connecticut on Tuesday. Up to an inch could fall in Shelton from the late morning through early evening on Tuesday, the NWS said. That will be followed by extreme cold, with temperatures near zero expected in Shelton on Wednesday night into Thursday morning. The daytime high on Thursday will be 17 degrees, the NWS said.