The overall weather pattern for Philadelphia over the next two weeks is for below average temperatures (average high about 49) with at least one 3 day warmup occurring over the coming weekend.
Low pressure will bring a southwesterly flow of mild air for Saturday and especially Sunday. The statistical EKDMOS has a high of 60 for Sunday while the NBM shows a high of 58!
Unfortunately, there’s a high probability of rain for Saturday, but Sunday afternoon may be dry. Too soon to be sure. Stay tuned.