7:00 AM | Another frontal passage to deal with tomorrow night

6-Day Philadelphia Forecast

Today

Mainly sunny, warm, highs in the mid-to-upper 70’s

Tonight

Mainly clear, mild, patchy fog towards morning, lows near 60 degrees

Thursday

Partly sunny, quite warm, more humid, chance for mid-to-late afternoon scattered showers and thunderstorms, lower 80’s for afternoon highs

Thursday Night

Evening showers and thunderstorms possible, clearing and turning cooler after midnight, upper 50's for late night lows

Friday

Mainly sunny, cooler, less humid, near 70 degrees

Saturday

Partly sunny, comfortably cool, upper 60's

Sunday

Partly sunny, nice, mid-to-upper 70’s

Monday

Mainly sunny, pleasant, upper 70’s

Discussion

A cold front passed through the region last night with scattered strong thunderstorms, but temperatures will not change all that much here today and with plenty of sunshine, afternoon highs should reach well up in the 70's. Another frontal system will arrive in the area tomorrow night and it can bring us more scattered showers and thunderstorms. Following that frontal passage, temperatures will indeed trend downward for Friday and Saturday with afternoon highs on both days likely at 70 degrees or below. Looking ahead, it looks like high pressure ridging will persist across the NE US and SE Canada for much of next week and this will prevent any cold air from Canada to head in our direction through at least the middle of the month. In addition, strong and persistent high pressure ridging to the northeast of here this time of year always raises a red flag for any potential tropical systems to “slide underneath” towards the US. Therefore, we’ll need to keep a close eye on the Caribbean Sea, southwestern Atlantic, and Gulf of Mexico during the next couple of weeks.

Meteorologist Paul Dorian
Perspecta, Inc.
perspectaweather.com