Today the Mid-Atlantic will be stuck between an area of high pressure over the Northeast and a low pressure system to our south. The high pressure system to the north kept the skies clear during the morning and early afternoon before clouds began to move in during the afternoon. Nevertheless, it should stay dry with only a 10% chance of rain or thunderstorms. Clouds in the afternoon should limit the high temperatures to the mid 80s, which is normal for this time of the year. Humidity will be on the low side today making for pleasant conditions. Mostly cloudy conditions will continue into the early evening with some clearing after 10 PM. Lows will be in the mid 60s with winds out of the south at 5-10 mph.
The high pressure currently to our north will begin to move off the Northeast coast on Tuesday. In response to the moving high pressure, the winds will begin to come out of the south at 10-15 mph. This will allow a more humid and warm air mass to move into our area during the day on Tuesday as a warm front moves through the area. Highs will be in the upper 80’s to near 90 in the urban areas. The increasing humid will make it feel warmer than Monday. Clouds will begin to increase during the today with a slight chance (30%) of thunderstorms during the afternoon especially after 3 PM. Cloudiness will continue with a stray thunderstorm possible during the early evening. Overnight lows will be in the mid 70s.
Wednesday and Beyond
The heat and humidity will begin to build on Wednesday and last through the remainder of the week. A hot and humid air mass will settle over the region by the end of the workweek, bringing highs into the low to mid 90s for Wednesday,Thursday and Friday. The high dew points will also help to push the heat index to near 100, making for some rather uncomfortable conditions.The humid air mass will also help spark scattered thunderstorms during the afternoon with heavy rain being the main threat.