Philadelphia Area Weather Forecasts

WEEKEND WEATHER FORECAST

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Sun 5:23 PM —Forecast Review —We had less cloudiness than forecast on Saturday and even more surprising, we had more cloudiness than forecast on Sunday. Sunday’s cloudiness resulted from a weak front stalling with a band of clouds remaining from just north of Philadelphia and extending over the city into S. Jersey. Areas further north had blue skies!
Visible Satellite at 1:51 PM. (Click on image for a larger view.)

Originally Posted Fri 5:21 PM —Cold air is moving in on some very strong winds. Gusts are in the 45-50 mph range, according the RTMA, and I think there have been even a few stronger gusts to near 55-60 mph.

High pressure builds in for Saturday, but aloft, temperatures warm up a bit, and some mid level clouds form by afternoon with a southerly flow. Another cold front moves through Saturday night into Sunday, again with windy conditions and temperatures colder again.

The new model- the AIGFS forecast for 1 PM Saturday. Noted the red, lavender and yellow lines are north of our area, indicating a warmer lower half of the atmosphere. The white line is the 32º line (Click on image for a larger view.)

Our next chance of precipitation, likely rain (but briefly beginning as some wet snow or sleet) will be Monday night into Tuesday.

Saturday Forecast

Sunny in the morning, becoming cloudy by noon. Sunshine returns by 4 PM. Winds lighten up.

NBM high temperatures: Blue Bell, PA 38º Philadelphia, PA 40º
Close to average uncertainty (based on standard deviation): ± 1.8º

Sunday Forecast

Clouds in the early morning, then mostly sunny. Windy again.

NBM high temperatures: Blue Bell, PA 44º Philadelphia, PA 46º
Slightly Above Average uncertainty (based on standard deviation): ± 2.1º