Overnight: Mostly cloudy. Low: 27
Monday: Mostly cloudy (coastal low brushes NJ with snow). High: 42
Monday Night: Cloudy with some snow at times, especially late. Low: 27
After a mild afternoon on Sunday, temperatures will turn much colder by the end of next week. Overnight, expect mostly cloudy skies and temperatures to drop into the upper 20s, so continue to watch for black ice into tomorrow morning.
We've been watching a coastal low to the south that will ride up the coast. At this point, it looks like that system is likely a miss for our area. However, it could brush the New Jersey coast with some snow late tonight into tomorrow morning, so the western edge of that precipitation shield is something we'll continue to monitor closely. It does look like most locations in our viewing area won't see anything until later on Monday.
A powerful trough will dig down and interact with some moisture and energy from that coastal storm. This interaction could transfer energy to a second developing coastal low. This setup has the potential to bring accumulating snow to the region on Tuesday. With this storm on Tuesday, we have to monitor the potential for heavier snow bands setting up. With all these moving parts and this system, we are analyzing the specifics through Monday, so we will bring you more details as they become fine tuned.
For now, here is the timing and thinking. Monday watch for possible snow, especially areas south and east including New Jersey early, SE Pennsylvania and eastern Pennsylvania counties. This chance can be at any point in the day, but the better chance for the entire area will be at night. Also for everyone, Tuesday will mostly likely have snow and then a flurry or snow shower on Wednesday and Thursday.
Here are the probabilities for snow potential from Monday night through Wednesday morning:
60% likelihood of 1-3"
30% likelihood of 3-6"
10% likelihood of 6"+
After these systems move through, the temperatures for the second half of next week and next weekend will actually be below normal, with highs struggling to get out of the 20s.