Following storms on Tuesday, less humid air will push through the Northeast and dip into the South, prior to a warmer weekend.
A large high pressure area from the Midwest will expand through much of the Eastern states during the middle and latter part of the week.
The system will shave a few degrees off temperatures and will significantly lower humidity levels from New England and the mid-Atlantic to the interior South.
The only places where humidity levels will remain rather high are along the southern Atlantic and Gulf coasts. With the high humidity in these areas, there will be an ongoing risk of showers and thunderstorms with locally heavy rain on a daily basis.
According to AccuWeather Senior Meteorologist Dave Dombek, "From the central Appalachians to New England, cool air aloft will allow spotty showers and gusty thundershowers with small hail on Wednesday."
"The risk of the showers and storms in the Northeast will diminish as warmer, drier air moves in aloft on Thursday," Dombek said.
In much of the Northeast, temperatures will average near to slightly below normal from Wednesday through Friday. In the Southeast states, temperatures will average below normal for the same period.
Highs will generally range from the middle 70s F in the central Appalachians and northern New England to the middle 80s in the coastal mid-Atlantic to the southern Piedmont areas during Wednesday to Friday.
During the coming weekend, temperatures and humidity levels will climb. Areas from New York City to Atlanta can expect high temperatures close to 90 both days of the weekend. From Boston to Portland, Maine, highs will be in the 80s. AccuWeather RealFeel® Temperatures will be 5-10 degrees higher than the actual high during the afternoon hours, prior to any downpour.
A system dropping southeastward from the Great Lakes to the Northeast will produce spotty showers and thunderstorms this weekend.
"The speed of that system will determine which areas have the risk of a thunderstorm one or both days this weekend," Dombek said.
Even with the risk of a shower or storm in the Northeast and along the southern Atlantic and Gulf coasts, the weekend should not be a washout.
Summer Temperatures so Far and Forecast for Rest of August
With the summer season unofficially about two-thirds over, there is some good news for warm weather fans in the East.
From Philadelphia and Pittsburgh to Boston and Burlington, Vermont, temperatures have averaged close to normal so far this summer (June 1 to Aug. 10).
Farther south, many areas from Washington, D.C., to Atlanta and Pensacola, Florida, have had a warm summer thus far with temperatures averaging between 1.5 and 4.0 degrees Fahrenheit above normal.
According to AccuWeather Chief Long Range Meteorologist Paul Pastelok, "We expect some surges of heat or warmth into the Northeast during the second half of August."
This could translate to a day or two with temperatures approaching record high levels in the Interstate-95 corridor of the mid-Atlantic.
Areas from the central Appalachians to the western slopes of the mountains will have some days with very warm conditions and other days near near-average in terms of temperature.
"Farther south, areas along the Gulf and southern Atlantic coast are likely to have near to perhaps below average temperatures due to frequent showers and storms, while interior locations of the South, such as northern Georgia and the Carolinas, are likely to run above average with less storm activity," Pastelok said.