High pressure is drifting off to the northeast and an easterly surface wind flow will bring moisture and cloudiness to the Philadelphia area over the weekend. Areas to our east and the Jersey shore will have more clouds and areas to the west will have brighter skies. The models often have a tough time predicting the amount of cloudiness in the summer, so confidence in this forecast is a bit lower than past weeks.
No precipitation is expected.
Sat 7/19: Cloudy in the morning, some brightening skies during the afternoon. High 83.
Sun 7/20: Cloudy in the morning, some sun possible in the afternoon. High 82.
Our seemingly endless string of perfect weekend weather may be ending this coming weekend. Weak high pressure will allow a southwesterly flow of warm, humid air over us, as an upper air trough tries to build down from Canada late in the weekend.
The latest models have delayed the wet weather to Sunday evening.
Saturday looks to be nice hot summer day, as high pressure controls our weather. On Sunday, the upper trough approaches bringing clouds and showers early evening.
The trend of unsettled weather likely extends Monday into Tuesday.
Sat 7/12: Mostly sunny and very warm. High near 90.
Sun 7/13: Some sun early, then increasing cloudiness. It looks like showers wait until evening. High 86.
