Front and lower dew point air have been slow to progress southward and eastward early Saturday morning as mid and upper level flow remains west to east. Additionally, we see the showers well to the west coming eastward and it looks as though a little piece of energy crossing Pa. Saturday morning and midday will probably not dry out before bringing a shower to parts of the area in the morning and perhaps into early afternoon. However, behind that departing disturbance, some drier air will sink in Saturday afternoon and the the front stalls far enough to the south that we should be dry in the evening.
The front will be stalling close enough to our south and a weak wave will ripple along the front Sunday. This will bring a shower/t-storm to at least parts of the area, though we think the higher chance for more significant showers and thunderstorms will be farther south and west.
Monday is kind of an ambiguous day on the weather map with pretty much zonal flow mid and upper levels before the deepening trough through the Great Lakes sends a front our way Tuesday afternoon into Tuesday night.