We have gone from the "bake" setting to "broil" after near 100-degree temperatures Tuesday and Wednesday. Relief is on the way in the form of a cold front, a rather potent one, that'll bring strong to severe thunderstorms Wednesday afternoon into the overnight. The Storm Prediction Center has placed the area under a slight risk for Wednesday. After the storms pass, the humidity also will clear out and we'll be left with a nice weekend, with the possibility of temperatures actually below normal, for a change. Until then, the Philadelphia metro is under an Excessive Heat Warning until Thursday morning.
Another humid night on tap for tonight, with no real heat relief as night falls. Temperatures in the upper 70's in the metro and south and east, in the lower to mid-70's north and west. The heat pump still out of the southwest at 5 to 10 mph. Tomorrow, another blazing hot day. Temperatures in the upper 90's to 100-degrees in some spots. The cold front will start dropping south-southeast in the afternoon. Thunderstorms may be strong to even severe, with high winds hail and heavy rains possible. Winds still from the southwest ahead of the cold front, to northwest behind it.
Thursday, behind the cold front, it'll feel less humid, but the temperature is still hovering near the 90-degree mark. Our heat wave may end Thursday but definitely on Friday. Scattered storm and showers are still around Thursday as well. Friday, the warmth is gone, with highs in the lower 80's. For the most part, skies will be partly cloudy, but an isolated shower or thunderboomer is possible. Saturday, high will be in the mid-80's with partly cloudy to mostly sunny skies and a great start to the weekend. Sunday looks like it's much of the same as Saturday. Highs in the middle 80's under partly sunny skies. Temperatures this weekend actually look like they'll be below normal, a rarity it seems this year. The start of the next work week looks warmer, but average. Both Monday and Tuesday's highs will be up near 90-degrees under partly cloudy skies. A spotty thundershower is possible Monday.