Broad high pressure over the Tennessee Valley and Appalachians will expand north into the eastern Great Lakes through Labor Day. This will lead to blast of summer heat.
This high pressure will remain in control through the mid week.
A cold front approaches the area Wednesday and cross the region Thursday. This will bring shower and thunderstorm chances by Wednesday evening with off and on showers and storms possible through Thursday.
A trough will linger over the area Friday leading to cool temperatures and perhaps a few spotty rain showers.