The strong seasonal and late season PV combined with the holly grail for cold, - AO, - NAO and a rising + PNA leads to this :
Saturday looks downright blustery, with cold air filtering into
the area with a strong northwest wind. Guidance is rather
concerning for this time frame, with model soundings showing
very deep mixing (likely above the 800-mb pressure level). Such
mixing would promote advisory-level winds across the area, and
likely some additional showers (at least in the northern CWA).
For now, kept mention of showers to areas near/north of I-80 but
would not be surprised to see some showers spread farther
south. Some snow showers may continue in the Poconos, especially
in the morning. Highs are expected to be around 20 degrees
below seasonal averages, with lows on Saturday night likely
reaching the freezing mark or lower in the Poconos and possibly
the Lehigh Valley (with winds possibly keeping things from
tanking to the freezing mark elsewhere).
Sunday looks only somewhat better, with winds diminishing to a
degree and temperatures a few degrees warmer. Nevertheless, it
will likely be breezy again, with highs about 10-15 degrees
below seasonal averages.
A weak system looks to affect the region early next week, but
models vary somewhat on timing and intensity. Have slight-chance
to chance PoPs Sunday night through Monday night given the
lingering uncertainty. With continued large-scale troughing
across the area in a rather blocky upper-level pattern, expect
temperatures to continue to be well below climatology.