Nws discussion says they are uncertain about this weekend:
LONG TERM /SATURDAY THROUGH TUESDAY/...
By the weekend, another storm will approach the northeast,
though considerable uncertainty remains. An initial burst of
snow appears likely on Saturday as a weak disturbance moves
through ahead of the main system. The latest EPS mean surface
low track across Southeast PA, along with lack of a blocking
high to the northeast, would point to a mostly rain event.
However, there remains plenty of uncertainty and a slight
southward shift could result in significant snow for parts of
the area. It is worth noting that the deterministic guidance has
shifted slightly southward today and indicated the potential
for snow across the northern tier of Central PA.
Although the specifics of the weekend storm remain uncertain,
there is greater certainty in blustery and cold conditions
arriving late Sunday into Monday, as the strengthening surface
low passes east of PA. Mean EPS 2m temps currently support temps
falling into the single digits Sunday night over the NW Mtns,
along with wind chills well below zero.