Cities from Boston to New York City; Philadelphia; Baltimore; Washington, D.C.; Norfolk, Virginia; and Raleigh, North Carolina, should experience a temperature drop by approximately 10 degrees Fahrenheit.
AccuWeather RealFeel® Temperatures will also lower. However, in the direct sunlight during the afternoon hours, it may still feel hot for many people.
The front will sink southward through the Northeast late this week and then in the mid-Atlantic region during this weekend.
Just ahead of the front will be spotty but locally heavy afternoon and evening thunderstorms.
In addition to lowering temperatures, the fresh air arriving from the north and east will result in lower humidity levels and a reduction in haze.
Even with the reduction in heat, temperatures will still average above normal.
Farther west, any cooling will be very limited or will not occur at all west of the Appalachians through much of the Midwest.
Rather than the backdoor front setting up a cool pattern for an extended period, heat will build back into the mid-Atlantic and New England from Labor Day through Wednesday of next week.