Philly Weekend Weather Forecast

A warm front is moving through Friday evening and will be accompanied by showers and thunderstorms.  Some showers are expected as early as 8-9 PM tonight and continue through the early morning hours.   (The models are keeping most of the activity in NJ.)

For Saturday, the warm front slowly moves through. It will be cloudy in the morning.  Additional showers are expected in the morning and early afternoon.  The models have been inconsistent and unimpressive with the amounts of precipitation.   The heaviest showers are expected to be in NJ.

In the afternoon on Saturday, clouds may break for some bright spots and some sunshine, but an approaching cold front will bring the chance of a thunderstorm late in the afternoon.   Again, the models are showing scattered areas and exact placement of the heavier showers again appears to be from the Delaware river and eastward.

High pressure builds in for Sunday.  Mostly sunny skies and highs near 82.

Clouds moved in earlier than expected

Friday’s weekend forecast missed some of the salient details.  Moisture moved in earlier than expected today resulting in considerable mid level cloudiness today.  This also kept the temperatures from reaching the expected highs.

The models have been very consistent in predicting a significant rainstorm for Monday. Exact placement of the heaviest rain always difficult to nail down, but the GFS and NAM have 1-3 inches possible  by late night Monday.