Philly Weekend Weather

A cold front is moving through tonight as another dip in the jet stream affects our area for the weekend.

For Saturday, partly to mostly cloudy, but with skies brighter than today.  High temps near 50.

For Sunday, noticeably cooler, and mostly sunny with high temps near 47.

A change in weather pattern for next week, as a deep low pressure in the middle of the country brings a southwesterly flow of moisture and warmth.  An eventual large scale amplification in the jet stream will bring colder weather by the end of next week.

Philly Thanksgiving Weather Forecast Update

Update Thursday 8 AM: The GFS cranks out only 0.03 inches water between 11 AM and 1 PM.  Both the NAM-based HRRR and the GFS-based LAMPS also show a chance of light showers mid-day.

There’s uncertainty about whether we’ll have showers on Thanksgiving day.  (Previously, it appeared that the day would be dry.)

The latest HRRR model has showers moving through midday.  The GFS LAMPS has showers possible in the afternoon while the MOS forecasts and NAM and  GFS have it still essentially dry.

So I’m  going with the HRRR – some light showers midday. I’ll update if things change or clarify.

Philly Thanksgiving Day Weather- Cloudy and Seasonable

High pressure that has moved in Tuesday and the early Wednesday will move offshore as a weakening low pressure system and associated weak cold front approaches late Wednesday.  Clouds will increase Wednesday afternoon, but the lack of upper air support will cause the low to weaken. Expect little precipitation.

A light shower is expected Wednesday night and possibly some light spits early Thursday morning, Thanksgiving Day.

Later Thursday morning into afternoon, it will be mostly cloudy, but some clearing possible late afternoon.  High temps near a seasonable average of 51-53.

Outlook for the weekend- A new dip in the jet stream will cause low pressure to develop and intensify Friday evening and night with some very light showers.   The low departs Saturday morning, with the Saturday being  partly sunny/cloudy and a bit colder and breezy.

Sunday- sunny and high near 49.