Currently we have a large Canadian high pressure in place over the region and its presence is certainly known with well below average temperatures for the time of year over the past several days.
This high pressure will remain in control through Saturday morning with temperatures moderating to near normal to perhaps slightly above normal levels as the high pressure weakens and moves east, and winds will shift to the west-southwest Thursday than shift southwest on Friday/Saturday ahead of a cold front, temperatures today will remain below average with highs in the mid 60s NE PA to lower 70s along the coast and lows tonight dropping into the 40s for most , lower 50s along the coast , then moderating to lower 70s NE PA and mid to upper 70s for the rest of the region Thursday through Saturday and low temperatures will also gradually moderate to the mid 50s to low 60s Thursday night then eventually middle 60s for many Friday/Saturday night with increasing clouds and humidity
A cold front will come east starting Saturday with increasing clouds and eventually the chance for rain in the afternoon for western sections than slowly spreading east with scattered showers Saturday night into Sunday , as of now the front is expected to stall along the immediate coast line which will keep overcast skies and scattered showers a threat all day Sunday and into Monday along with a raw easterly wind and high temperatures returning to below average levels, in the mid 60s to low 70s , not expecting a washout during this period and as a matter of fact most locations will not have significant rain, just a nuisance and some nasty weather
It could become a bit more interesting as we head later on Monday and into Tuesday depending on exactly where the front stalls out , a tropical entity is expected to develop in the Gulf this weekend and it could potentially ride the stalled cold front, and if the front does indeed stall along the immediate coast, the result would be a heavy rain and wind event, but if it stalls out just a bit farther east the heaviest rain would stay off the coast and just lead to more cloudy, showery weather rather than a significant rain event, either way this low isn’t expected to get particularly strong but it definitely could lead to some problems next week especially with a tight pressure gradient in between the low pressure and the negative NAO block to our north strong easterly winds would most likely cause the most issues if this was to track close to the coast as seen on the wind map in the left bottom corner above. It could also cut off from the main flow and just sit off our coast line for a while but again it’s so far out that we are just advertising possibilities.
We will be tracking this storm threat through the week, nothing is certain yet and we probably wont know for sure until Saturday/Sunday when the cold front comes through the area.