7:00 AM | *Warmer today and then an extra surge of warmth on Wednesday with the chance of PM showers and thunderstorms*

6-Day forecast for the Philadelphia, Pennsylvania metro region

Today

Mainly cloudy, becoming noticeably warmer, highs in the mid 70’s; S winds at 5-10 mph

Tonight

Mainly cloudy, mild, patchy fog possible late, lows in the lower 60’s

Wednesday

Partly sunny, very warm, chance of PM showers and thunderstorms, near 90 degrees for afternoon highs

Wednesday Night

Mainly cloudy, mild, chance of evening showers and thunderstorms, near 65 degrees for late night lows

Thursday

Mainly sunny, comfortably warm, low-to-mid 80’s

Friday

Mainly cloudy, cooler, good chance of some beneficial rain, near 70 degrees

Saturday

Mainly cloudy, quite cool, good chance of showers, low-to-mid 60’s

Sunday

Becoming partly sunny, cool, maybe a shower or two, upper 60's

Discussion

After the much cooler weather of yesterday, warmer air will begin to push northeastward today on a change of wind direction to southerly from Monday's onshore flow and then a surge of unseasonably warm air is likely to arrive here on Wednesday. The surge of warmth on Wednesday will follow the passage of a northward-moving warm front and temperatures later tomorrow are likely to end up near 90 degrees with the threat of PM showers and thunderstorms. A cold front will drop to the southeast on Thursday from the Great Lakes region and high pressure will begin to build into southeastern Canada. As a result, temperatures will begin a downward trend late in the week as onshore flow forms in the Mid-Atlantic region and low pressure is likely to result in a chilly rain event from Friday into Saturday. Improving conditions are possible later this holiday weekend although it'll stay on the cool side.

Meteorologist Paul Dorian
Peraton
peratonweather.com