Monthly Archives: July 2019

Philadelphia Weather Outlook

WEEKEND WEATHER OUTLOOK

We’re entering the climatologically hottest summer period for Philadelphia this week and weekend;  the current GFS forecast appears on track to support that climate statistic.

The remnants of Tropical Storm Barry are expected to bring heavy rains Wednesday night, although the exact placement is always difficult to determine.  The current GFS bullseye is right over Philadelphia.

After that time, oppressive heat and humidity is expected for much of the end of the coming week.  Temperatures and heat indices get possibly extreme on Saturday, where temperatures in some areas may approach 100, according the latest GFS.  (That’s temperature, not the Heat Index. Heat indices will be higher. )

Here’s the current GFS forecast for Saturday afternoon, about 2:45 PM:

Current GFS forecast for Saturday afternoon 2:45 PM

The forecast specifics may change, but the weather will likely be very hot and humid for Thursday, Friday and especially Saturday.

A front may move through Sunday, reducing temps and humidity.

Philadelphia Area Weather Forecasts

WEEKEND WEATHER FORECAST

[su_note note_color=”#d9f2da”]Last night’s models moved today’s predicted high temperatures downward a degree or two and moved up the dew points a bit. High temp 87-89, dew points in the more uncomfortable mid 60s for Saturday.

EKDMOS Forecast High Temps

[/su_note]

From last night…

This weekend’s forecast is unusually straightforward and hasn’t changed appreciably from last night’s posted “outlook”.

High pressure will build in for Saturday and Sunday.  Sunny skies and above average temperatures expected.  Daytime highs near and above 90 in the city, a degree or so less in the northern and western suburbs.

Here’s the latest EKDMOS high temperature probabilities for the coming several days for KPHL, Philadelphia Airport.

Ensemble Kernal Density Model Output Statistics (EKDMOS) High Temps