Expect beautiful weather for Wednesday afternoon with warmer temperatures and higher humidity levels.
The setup is a warm, mostly dry stretch through Thursday, followed by a cold front and a cooler, more seasonable pattern heading into the weekend.
Thursday will be mostly sunny and warm with highs in the low to mid-80s, while a few scattered showers or an isolated thunderstorm could develop during the afternoon, mainly north and west of Philadelphia.
Friday turns quieter behind the front with partly to mostly sunny skies and highs in the lower 80s, while cooler air begins to settle in.

Saturday will be more seasonable with comfortable temperatures, but humidity starts to increase ahead of a warm front moving through Saturday night.
Sunday looks unsettled with showers and thunderstorms becoming more widespread, along with the potential for locally heavy rain.