Tonight will feature clear and calm conditions -- lows generally in the 40's in the coolest of burbs to our north and east, 50's in the city and along I-95. Clouds take over as the day progresses tomorrow, with slightly cooler temperatures the result.
Highs will range from the upper 50's at the Shore (midday highs, temperatures will drop back in the afternoon along the coast) to the 60's across New Jersey. Around the city, 70 for an early afternoon high is not out of the question -- we might start falling a bit towards dinner as the advancing sea breeze reaches the city. West of the city, despite less overall sunshine, you're going to deal with residual warmth and probably get to around 70 degrees give or take a couple of degrees on either side.
Showers are possible Thursday night, a steadier round of showers with perhaps a rumble of thunder are in the forecast for Friday. Friday looks to be relatively cool, especially north and east of the city, with highs that struggle to reach 60 in Philadelphia. We nudged our forecast a touch higher but there's a good bit of uncertainty on where a warm front in association with Friday's storm system ends up setting up -- climatology says south of city, a couple of optimistic computer models want to send the front through. For now, we'll side slightly with climatology.