The amazing weather is continuing throughout the weekend as high pressure is parked on top of the region and preventing any systems from affecting us. Saturday was pretty much on par with the average high and low for the first third of August; the high reached 86 just before 4pm after a morning low of 67(the average high for Philadelphia International Airport is 86 while the average low is 69). The day featured sunshine along with fair weather cumulus clouds in the afternoon once we reached the convective temperature(the estimated temperature that the surface must warm to in order for clouds to develop). There was also a sea breeze in the afternoon that just about jumped over the Delaware River and into Center City, but never did so; it was just in the lower 80s by the late afternoon east of I-95.
Overnight it will remain clear with lows in the lower 60s and a light wind(Center City may not get below 65 due to the urban heat island effect, but I am still hopeful!) while the suburbs will try and get back into the upper 50s. Sunday will feature sunshine and fair weather cumulus in the afternoon just like Saturday, BUT we'll have a southerly wind so although highs will be in the middle 80s it will feel a touch more humid(dewpoints still in the comfortable 60s, but you will notice it a little more than days past).
Come Monday high pressure is still in control of our weather, but it will be farther offshore so there will be an onshore wind with highs in the lower 80s, but on Tuesday we'll be back into that southerly flow with highs approaching the middle 80s. There will also be a cold front approaching from the west so there will be increasing clouds in the afternoon on Tuesday with showers and thunderstorms after sunset. Overnight lows will be in the upper 60s with showers and thunderstorms continuing until sunrise as the cold front passes through. We'll still have some clouds around Wednesday morning and it's not until the late afternoon once get a wind shift from out of the north so highs may reach the upper 80s before falling.
Behind the cold front there will be a short wave passing by to the north so on Thursday there will be some clouds in the afternoon, but we'll stay dry and unseasonably cool with highs just in the upper 70s! Ditto for Friday while Saturday we'll rebound into the lower 80s with continued sunshine and afternoon fair weather clouds popping up.
Don't forget that you can check out the 7-day forecast(as well as obtain radar and satellite maps) any time at www.scottderekwx.com/forecast.html.