6:15 AM | ***Severe thunderstorm threat later this afternoon and evening...tropical downpours can cause flash flooding conditions...unsettled pattern continues second half of the week***

6-Day forecast for the Philadelphia, PA metro region

Today

Sun followed by clouds, very warm and humid, good chance of PM showers and thunderstorms, some of the storms can be severe, tropical downpours can cause flash flooding, highs in the low-to-mid 90’s; W winds around 5-10 mph

Tonight

Mainly cloudy, mild, good chance of showers and thunderstorms, some of the storms can be severe, tropical downpours can cause flash flooding, lows not far from 70 degrees

Wednesday

Partly sunny, quite warm, humid, chance of PM showers and thunderstorms, some of the storms can be strong-to-severe, tropical downpours can cause flash flooding, near 90 degrees for afternoon highs

Wednesday Night             

Mainly cloudy, mild, chance of showers and thunderstorms, some of the storms can be strong-to-severe, tropical downpours can cause flash flooding, upper 60’s for late night lows

Thursday

Mainly cloudy, warm, humid, chance of showers and thunderstorms, some of the rain can be heavy, mid-to-upper 80’s

Friday

Mainly cloudy, warm, humid, chance of showers and thunderstorms, mid-to-upper 80’s

Saturday

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

Sunday

Partly sunny, warm, humid, chance of showers and thunderstorms, middle 80’s

Discussion

Tropical air is in place across the region and an upper-level trough of low pressure will combine with a slow-moving surface frontal system to enhance upward motion during the afternoon and evening hours. This combination of ingredients can lead to severe thunderstorms for later today and early tonight and tropical downpours can cause flash flooding given the already well saturated grounds. The unsettled weather pattern will continue through the second half of the week with a daily shot at additional showers and thunderstorms and some of that rain is likely to be heavy at times. .

As far as temperatures are concerned, today could turn out to be the hottest day of the week with afternoon highs in the low-to-mid 90’s. The heat today combined with the high humidity will make for very uncomfortable conditions all along the DC-to-Philly-to-NYC corridor. The remainder of the week is likely to feature temperatures a tad more limited compared to today with afternoon highs generally in the 95-90 degree range.

Meteorologist Paul Dorian
Arcfield Weather