After overnight showers and thunderstorms it was mostly cloudy until the late afternoon once some drier air pushed in from the north; we reached 87 degrees at Philly International this afternoon by 4pm after the clouds dissipated. Overnight there will be a few clouds as lows will be in the upper 60s with a backdoor front pushing through and a northeasterly wind.
Come Friday we'll have high pressure on top of the region, but with an onshore wind coming off of the lower 70-degree ocean. Highs will be into the lower 80s, but the humidity shall be lower than the past couple of days. There will also be a threat of a passing shower by the evening commute thanks to some instability due to a short wave pushing on though; once we reach our convective temperature(the estimated temperature that the surface must warm to for clouds to develop) clouds will bubble up and there will be enough moisture aloft as well.
We'll clear out overnight with lows in the lower 60s while Saturday will be sun filled with highs once again in the lower 80s with continued low humidity. Come Sunday the humidity will creep up just a little bit, but we'll be seasonable into the middle 80s while it's not until Monday as a warm front progresses northward as we become muggy again with a threat of a shower or thunderstorms in the afternoon; highs will be into the upper 80s and overnight lows will be near 70 with some fog possible while Tuesday's hot and humid with highs into the lower 90s and a thunderstorm threat into the afternoon.
Don't forget that you can check out the rest of the 7-day forecast(any time) at www.scottderekwx.com/forecast.html.