6:15 AM | ***Philly reaches 101 degrees...one more day of high heat and humidity...70's by Friday following back door cool frontal passage...scattered showers and strong storms between now and then***

6-Day forecast for the Philadelphia, PA metro region

Today

Mainly sunny, very hot, humid, scattered late day showers and thunderstorms, any storm can be strong-to-severe, highs in the middle 90’s; Calm in the morning; NW winds around 5 mph during the afternoon

Tonight

Partly cloudy, mild, scattered showers and thunderstorms, any storm can be strong-to-severe, lows in the low-to-mid 70’s

Thursday

Partly sunny, not nearly as hot, humid, chance of showers and thunderstorms, any storm can be strong-to-severe, mid-to-upper 80’s for afternoon highs

Thursday Night             

Mainly cloudy, mild, chance of showers and thunderstorms, low-to-mid 60’s for late night lows

Friday

Mainly cloudy, cooler, chance of showers, maybe a thunderstorm, low-to-mid 70’s

Saturday

Mainly cloudy, warmer, humid, chance of showers and thunderstorms, low-to-mid 80’s

Sunday

Partly sunny, quite warm, humid, chance of showers and thunderstorms, mid-to-upper 80’s

Monday

Partly sunny, quite warm, humid, chance of showers and thunderstorms, near 90 degrees

Discussion

The official high temperature yesterday recorded at Philly International Airport (PHL) was 101 degrees which broke a record for the date and was the first triple-digit reading since July 2012. The very strong upper-level ridge of high pressure parked overhead during the past couple of days will begin to break down later today and also shift slowly to the south. At the same time, surface high pressure will build across southeastern Canada and the combination of these two systems will allow for the formation of a back door cool front that will push southwestward from northern New England over the next couple of days. As a result, relief is in sight here in terms of temperatures (70’s on Friday) and precipitation chances will be on the rise. There can be scattered shower and thunderstorm activity later today and early tonight and that threat of rain should increase some on Thursday. Any storm that forms either late today or on Thursday in the Mid-Atlantic region can reach strong-to-severe levels. Unsettled weather conditions will continue on Friday, Saturday, and Sunday and a look ahead to next week suggests temperatures could be quite reasonable as the calendar shifts from June to July.

Meteorologist Paul Dorian
Arcfield Weather