The front that moved through Friday is over the Atlantic and stretches southwestward down into northern Florida. That nearly seasonably chilly air that returned Friday midday and afternoon will remain with us Saturday and a couple of additional degrees will be shaved off high temperatures Sunday with a continuing north of west flow and an upper level trough moving across the Northeast Saturday night and Sunday morning. There will be a chilly northwest breeze of 8-16 mph picking up. We will have intervals of sunshine, but there will probably be more solid clouds Saturday evening into early Sunday morning as that upper level trough moves through. There will be a coating to up to an inch of snow in parts of western Pennsylvania up into the higher elevations of northern West Virginia and western Maryland from this upper level trough, but flurries will tend to diminish the farther east you go. We do think some of our viewers (most likely from Baltimore on north and west) will have a sprinkle Saturday evening, then a flurry, but there will be no accumulation if they do materialize.
We will probably turn out mostly sunny behind this trough Sunday afternoon. High pressure situated to the north Saturday morning will give way to a milder southwesterly flow around high pressure that moves from north Texas Saturday morning to eastern North Carolina Monday. Also, a clipper storm that will develop in northern Alberta Saturday will track eastward to James Bay Monday. This will also help the southwesterly flow of milder air to develop across the Northeast and mid-Atlantic Monday when we will remain dry.