It was an overcast and dreary day with some mist as well; officially at Philly International Airport just a trace of rain was reported. The record high was 72 set at 1am before the frontal boundary pushed southward and temperatures throughout the day held into the middle 60s with an easterly wind.
Overnight it will remain overcast with lows in the middle 60s and there will be some fog as well; this will stabilize the atmosphere and prevent any severe weather from getting through the region. Thursday will remain overcast and humid with showers and thunderstorms in the afternoon as the frontal boundary pushes northward as a warm front. Highs will be around 80 in Center City, but 20 miles north toward Reading it may just hold in the middle 70s as there will be a VERY SHARP temperature gradient thanks to the front.
Showers and thunderstorms will continue overnight with lows around 70(some fog is possible as well) and more will be on tap on Friday with highs in the lower 80s. It finally clears out overnight into early Saturday morning and as drier air works in the humidity levels drop for the day on Saturday. Highs will be in the middle 80s; ditto for Sunday and then we get a more southerly flow on Monday the humidity will creep up and we may FINALLY hit 90 degrees for the first time this year!
You can check out the rest of the 7-day forecast(any time) at www.scottderekwx.com/forecast.html.