An easterly to southeasterly flow ahead of a warm front will bring clouds to the Philadelphia area on Saturday. Most models have light precipitation mostly confined to areas in NJ on Saturday, but a brief sprinkle is possible late morning.
The warm front moves north of our area, bringing very mild temperatures and clearing for late Saturday and Sunday.
It should be noted that the Canadian models show highs on Sunday in the mid 60s!
Temperatures drop significantly on Monday with light rain.