This post was revised
Best chance of showers and thunderstorms today, Sunday, will be starting around 4 to 6 PM according to the GFS LAMP and between 6 and 8 PM according to the HRRR.
This post was revised
The big change will be in the dewpoints. Expect some sun both Saturday and Sunday. Still unclear how much rain we’ll see
Philly Labor Day Weekend Weather Forecast
This post was revised
High pressure slowly moves off the coast. A southeasterly flow of moisture on Saturday will herald the approach of a warm front that moves through Saturday night. Warm and very humid conditions return late Saturday night through Monday.
A southwesterly flow of moisture will cause showers late Sunday through most of Monday, but the shower activity will be scattered.
It will not be very wet this weekend, but clear blue skies will be in short supply– expect considerable cloudiness from late Saturday through most of Monday with warm and humid conditions.
A chance of a shower is possible any time from Sunday afternoon through Monday.
Saturday 8/30: Sunshine giving way to increasing cloudiness during the day. Becoming more humid. High 83
Sunday 8/31: Considerable cloudiness with some sun, increasing chance of showers during the late afternoon. Very humid. High 86
Monday 9/1 : Considerable cloudiness, some sun, very warm and very humid. Chance of scattered showers. High 88
Philly Labor Day Weekend Weather Outlook
This post was revised
A warm front moves through late Saturday, wth warm and very humid conditions returning Saturday night through Monday. A weak front tries to pass through late Sunday into Monday.
Not a very wet weekend but considerable cloudiness expected each day, especially Sunday afternoon.
Details still uncertain about timing and amounts of precipitation. Will try to pin it down tomorrow.