Philly Memorial Day Weekend Forecast


As mentioned in my “Outlook” post a few days ago, the models were maintaining a nose of high pressure that seemed to block shower activity from reaching our area.  However, the trend was for this high pressure blocking  to be decreasing.  Such is the case today, as high pressure is now expected to retreat eastward, allowing showers to move in as early as Sunday afternoon.

For Saturday, mostly sunny and hot, with a  slight chance of a scattered thundershower later in the afternoon.  High 89

Significant moisture from a semitropical system off the southeast coast will move in on Sunday giving us an increasing chance of showers in the afternoon.  Sunshine in the morning with clouds, showers and thunderstorms likely during the afternoon.  High 82 and much more humid.

Monday looks to be cloudy with rain, possibly heavy.  Warm and quite humid. High 78

Note- The forecast has changed considerably over the past two days.  The effects of a tropical system will throw another monkey wrench into this current forecast.  Expect further changes.