The heat of the past four days will take a one day break thanks to clouds from a disturbance trying to pass through the region. This disturbance will bring some thunder to the region this evening and again tomorrow as it works through.
Temperatures tonight will be rather muggy -- in the 70's throughout the region with variably cloudy skies through the night. Any evening thunderstorms will taper off or move out of the region after sunset although a rogue shower or two may continue through the night.
Monday features temperatures in the mid and upper 80's through the region, warmest along I-95. While hitting 90 cannot be completely ruled out, there will be a good deal of cloud cover around the region and that should do just enough to prevent temperatures from breaking the 90 degree barrier. Humidity will still be pretty high but as the disturbance pushes through we should see dew point values trend a bit lower late in the day. Scattered storms will fire, mostly in the afternoon hours, with some storms producing heavy rain and gusty winds.
90's come back for Tuesday and Wednesday, with the latter the more humid and uncomfortable of the two days as heat index values push 100 again in peak afternoon heat. A frontal boundary pushes in from the west late Wednesday, crosses the region on Thursday, and slowly pulls away on Friday with threats for rain and thunder looming for the middle and latter portions of the week.