Philadelphia Area Weather Forecasts

WEEKEND WEATHER FORECAST

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Saturday Update: The period from January 16th through January 20th continues to show a strong signal for coastal low development and possible snow.

Low pressure that brought clouds on Friday will move east and away from us on Saturday.  High pressure will build in on Saturday with mostly sunny skies, but occasional cloudiness from the upper air trough may move in late Saturday—

GFS Forecast 2 PM Saturday  (Click on image for a larger view.)

Saturday—

The upper flow briefly becomes a slight ridge on Sunday.   Skies on Sunday remain mostly sunny here as a low pressure system develops near the Gulp of Mexico—

GFS Forecast Sunday 2 PM

 

(Seasonal averages this week—  high 40º  low 24º  Blue Bell)

Sunday—

• After early morning clouds, mostly sunny,
• High temperature 41.9º sd 1.9º (NBM model) Blue Bell.
• Light winds from the NW

The low pressure system developing on Saturday will pass to our south Monday into Tuesday.  Most models (except the Canadian and German ICON) have the light snow shield missing us. The trend has been for the light snow/flurries shield to be a bit further north.