Monthly Archives: July 2019

Philadelphia Weather Outlook

WEEKEND WEATHER OUTLOOK

With things being so quiet weather-wise, this “outlook” could easily be the final forecast for this weekend.

High pressure will be in control for the entire weekend.  Sunny skies and increasingly warm temperatures for Saturday and Sunday.  Based on the EKDMOS, high temps for Philadelphia 89-91, running about two degrees less in the suburbs to the north and west.

Some localized instability may cause very widely isolated thundershowers  Sunday late afternoon.  Most areas will be dry.  The NAM and GFS are also showing some very localized areas  of clouds for periods Sunday afternoon.  Most areas will be sunny.

Weather Updates

WEEKEND WEATHER UPDATE

Today’s official high temperature was 97 and the high heat index was 106.

The global GFS overshot the temperature forecast. The mesoscale models (NAM, WRF, HIREF) did better with the temperatures but over-forecast the pop-up showers in a big way.

Tonight’s models, just becoming available, are predicting a hotter day on Sunday than Saturday. Highs are coming in at 98-100. Thunderstorms move in from the northwest after 8PM Sunday evening.