Philly Weekend Weather Forecast

The anomalously warm southerly flow of air will be displaced by a strong cold front passage Saturday late afternoon into evening as the jet stream allows a more seasonably cold air influx into our region.

Saturday will start with cloudiness and a moderately strong southerly wind.  Some sun is expected to break through mid day and early afternoon before the frontal passage.  High temperatures around 72, higher if we get more sun.

The front is expected to move through early evening Saturday, but showers and some locally strong thunderstorms will move through ahead of the front anytime between 3-5 pm.

(The high resolution HRRR suggests that a preliminary brief line of showers may move through earlier, about noon.)

Following the frontal passage strong winds from the northwest will move in during the evening , with temperatures dropping.

Sunday will have a mix of sun and instability clouds. It will be windy and more seasonable, with highs about 45.

 

Philly Weekend Weather Forecast

High pressure will move off to our east on Saturday.   Sunny skies and very mild temperatures for Saturday, with highs near 60 as the jet stream retreats well north of our area.

Some mid level cloudiness moves in late Saturday afternoon as a weak front moves through Saturday evening. There’s a chance of a brief sprinkle.  Strictly speaking, it’s a cold front, but temperatures will actually be higher on Sunday due to the fact that the air mass moving in is a continental airmass instead of an airmass from Canada.

Sunday will be mostly sunny and unseasonably mild.  High temperatures in the low 60s.