Philly Weekend Weather

Early cirrus clouds with approaching warm front
Cirrus clouds with approaching warm front

 

A southerly flow of warm humid air will affect our area over the weekend.  A series of frontal boundaries will move through. Exact timing of precipitation will be difficult to nail down, but most likely late Saturday afternoon into evening and similarly late Sunday into Sunday evening.

The NAM has more breaks of sun than the GFS on Saturday.

First, a warm front moves through Friday night and some light showers are possible before daybreak, then ending early morning Saturday.

On Saturday, the warm front barely clears our area.  The GFS has some sunshine breaking through in the mid morning, but has mostly cloudy by 2 PM with an increasing chance of showers in the late afternoon and evening.  High 82.  More humid.

There’s a chance of thunderstorms also Saturday evening as a weak cold front moves through.

The weak cold front is expected to remain near our area on Sunday as weak disturbances move along it, likely triggering some showers.  Sunday looks to be mostly cloudy with an increasing likelihood of showers towards evening.