The current cool and moist weather pattern most of Pennsylvania has experienced over the last several days will continue this week into Monday and Tuesday with partly to mostly cloudy skies, scattered rain showers, and high temperatures staying below eighty degrees. This pattern will finally break Tuesday night as a strong cold front moves through the region, bringing periods of rain and thunderstorms to Pennsylvania from Tuesday afternoon into Wednesday morning. Behind the front on Wednesday, high pressure from the west will start to take control. Wednesday will feature partly cloudy skies, decreasing humidity, and high temperatures ranging from the mid-eighties in the southeastern portion of the Commonwealth to upper-sixties in the northwestern portion. High pressure will strengthen on Thursday and Friday, resulting in low humidity, mostly sunny skies, and temperatures in the seventies.