Here is the Philadelphia forecast. Looks like possible rain for Wednesday.
Wednesday: A chance of rain. Mostly cloudy, with a high near 67. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch possible.
Wednesday Night: A chance of rain. Mostly cloudy, with a low around 52. Chance of precipitation is 30%.
Friday: Sunny, with a high near 72.
Friday Night: Mostly clear, with a low around 50.