High pressure is in control Monday squashing any clouds from forming while keeping temps seasonal in the low 80s. Winds are out of the NW, thus grabbing dry air, so humidity is not a concern. Tuesday the high pressure shifts to our east, so our winds change. Winds now will be out of the SE bringing the humidity up... turning sticky. But the most humid day comes Wednesday, that will also be the same day that temps peak in the upper 80s. Thus it feel like the low 90s.
So, if you like it seasonal (near 80) and dry... Monday is a winner!
If we look further in the week, some models think that moisture from Tropical Storm Cristobal could reach Maryland Friday bringing us a few showers. A little too far out to go with that thought, but as we get closer models will have a better idea if the moisture pulls away from the center of the storm (which is traveling to Canada) and makes it in to Maryland with the help of a cold front.