An area of surface high pressure will nose into the region from the west Friday night into Saturday, delivering a great start to the weekend with plenty of sunshine and temperatures in the middle 80s. By Sunday, high pressure will slide east off the coast, allowing for a southerly flow to return to the region. We will also be watching an area of low pressure to our southeast that could take on some tropical characteristics. As of now, it still looks like a pretty nice day with some sunshine but we will see enough of an increase in moisture allowing for some more clouds than today.
By early next week, an upper level and accompanied surface low will intensify across the midwest, dragging a cold front across that region Sunday night. Ahead of it around our region, it will get briefly more humid Monday with temperatures into the upper 80s. The front will approach by late in the day, with some increasing clouds and some showers and thunderstorms late in the afternoon or evening. This should also push whatever low that is to our southeast, out to sea.
The front will slow significantly for Tuesday, allowing for a shower or storm east of BWI Marshall across the DelMarVa. BWI Marshall westward looks to remain dry, so it is just a mention at this point.
Behind the front for Wednesday and beyond, it looks seasonable with much lower humidity. Temperatures will be mainly in the lower to middle 80s each afternoon, with lows in the 50s for most suburbs (60s closer to the city).