We flirted with the 90 degree mark this afternoon at Philly International Airport before there were some showers and thunderstorms within the metro area(as of the 5pm climate report); we still haven't reached 90 yet this year! To me that's insane(although I'm not complaining)! We won't come close within the next seven days either.
Overnight we'll have some scattered showers and thunderstorms with clearing after Midnight as lows drop down to the upper 60s. Wednesday will feature whatever leftover clouds there are to be replaced with sunshine and fair weather cumulus as highs will be in the lower 80s. There will be a northerly wind shifting to the west by the afternoon. Overnight lows will be in the middle 60s as we'll cloud up ahead of a Mesoscale Convective System; an MCS is basically a line of thunderstorms that remain intact for hundreds of miles and can also contain strong gusty winds as well. I feel that right now the morning commute may be dicey with heavy rain and strong winds as the decaying system pushes through. Highs will be in the middle and upper 70s, but it will be humid and overcast throughout the day.
We'll finally dry out and have highs just in the lower 70s for Friday despite plenty of sunshine, but we'll rebound back into the seasonable 80-degree range by Saturday still dominated with sunshine thanks to high pressure parked on top of the region.
You can check out the rest of the 7-day forecast(any time) at www.scottderekwx.com/forecast.html.