Sunday was a bit warmer than Saturday and it was a little more humid as well thanks to the southeasterly wind; after a low of 67 at Philadelphia International Airport we reached a high of 88 shortly before 2:30 in the afternoon. This was before a sea breeze pushed westward and scaled temperatures back into the lower 80s east of the Delaware River. There were sunshine and fair weather cumulus clouds in the afternoon, but overnight the clouds will continue to dissipate with lows in the upper 60s and a light southerly wind.
Monday will feature sunshine and fair weather cumulus clouds with highs in the lower to middle 80s and a south wind around 10mph; this means that there will be a sea breeze along the shore in the afternoon coming off the mild middle 70-degree ocean. Overnight will feature a few clouds with lows in the middle to upper 60s while Tuesday will be in the upper 80s as a cold front approaches from the west. Clouds will increase by late morning and there will be showers and thunderstorms by the evening commute.
Overnight Tuesday lows will be in the lower 70s with continuing showers and thunderstorms, but the rain shall end by the morning commute. The clouds will exit by lunchtime, but we'll still reach the middle 80s before the front pushes through and the winds shift by the afternoon(temperatures may actually fall a few degrees).
Behind the cold front there will be an upper level low pinwheeling across Southern Canada so both Thursday and Friday will be unseasonably cool with highs in the upper 70s and there will be clouds popping up in the afternoon as well(isolated showers and thunderstorms should stay well to the north however).
Remember 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.