7:00 AM | ***Thick fog today...heavy rain event from late tonight into tomorrow night...strong winds, possible thunderstorms as well...cold blast to follow for Thursday and Friday***

6-Day forecast for the Philadelphia, PA metro region

Today

Thick fog today with occasional light rain or drizzle, mild, highs in the lower 50’s; Calm conditions this morning; SE winds around 5-10 mph in the afternoon

Tonight

Mainly cloudy, mild, occasional rain that becomes steadier in the late night hours, maybe an overnight thunderstorm, temperatures rising through the 50’s in the overnight hours

Wednesday

Mainly cloudy, becoming quite windy and unseasonably mild, rain, heavy at times, maybe a thunderstorm or two, low-to-mid 60’s for afternoon highs

Wednesday Night             

Mainly cloudy, windy, and mild during the early evening hours with lingering rain showers likely, turning sharply colder and continued windy during the late evening and overnight hours with a possible snow shower, late night lows in the mid-to-upper 20’s

Thursday

Mainly sunny, windy, quite cold, low-to-mid 30’s with much lower wind chills

Friday

Mainly sunny, breezy, still quite cold, low-to-mid 30’s

Saturday

Partly sunny, not as cold, lower 40’s

Sunday

Mainly cloudy, mild, chance of rain, mid-to-upper 40’s

Discussion

There was some welcome rainfall yesterday in the Philly metro region, but it didn’t amount to all that much as the system involved was a rather quick mover. After a damp and foggy day on Tuesday, another rain event is on the way and this one will be much more significant than yesterday’s with more than 2 inches on the table between late tonight and tomorrow night. In addition to the rain, the winds might become quite strong both ahead of the advancing cold front on Wednesday from a southerly direction and also on its backside on Wednesday night from a northwesterly direction. The combination of a strong surface cold front, plenty of available moisture, and a deep upper-level trough that becomes “negatively-tilted” will lead to the heavy rain event. A cold blast will follow the passage of the cold front with temperatures on both Thursday and Friday well below-normal for this time of year.

Meteorologist Paul Dorian
Arcfield Weather