Pennsylvania will feel chilly today as a bitter westerly wind will create a wind chill factor around 5-10 degrees below actual air temperature, particularly on Wednesday. Clouds will build across much of the state heading into Thursday as an area of low pressure will skirt north of the area, possibly bringing snow showers into northern Pennsylvania on Thursday. Behind the storm, a strong high pressure off to the west will build and usher in below average temperatures for the state. Winds out of the north Saturday may provide lake effect snow showers for the north western parts of the commonwealth. Sunday will feature average like temperatures and calm winds.