Austin will hit 99 degrees Tuesday, with heat indexes near 104 before storm chances return after lunch. Rain risks increase Wednesday through Friday, but the heat sticks around through Labor Day.

Knoxville is headed for a hot, sunny stretch with highs near 100 through Friday. Limited storm chances return this weekend.

Memphis is heading into a Heat Advisory with a 99-degree high and heat indexes near 107. The oppressive pattern is expected to continue through the weekend.

Nashville’s heat ramps up fast, with temperatures near 101 degrees and heat indexes reaching 110 by Thursday. Slight storm chances offer only limited weekend relief.

A 92-degree Tuesday brings heat index values near 100, then a potentially rough round of storms. Cooler, less humid weather arrives for Labor Day weekend.

D.C. reaches 93 Tuesday with a heat index near 100 before storm chances ramp up later in the week. A cooler holiday weekend is on the way.

Pittsburgh heats up to 93 degrees Wednesday, but storms are lining up for late Wednesday and Thursday. The weekend should bring cooler temperatures and more manageable outdoor conditions.

Cincinnati faces three days of near-100-degree heat, with a Heat Advisory through Thursday and relief arriving by Labor Day.

Columbus faces a Heat Advisory through Thursday, with highs near 95 and heat indexes reaching 104. Storm chances rise before a cooler Labor Day weekend.

Orlando’s mostly clear morning gives way to strong thunderstorms, heavy rain and triple-digit heat indexes Tuesday.

Indianapolis faces a three-day Heat Advisory, with heat indexes reaching 105 before cooler air and storm chances arrive for Labor Day weekend.

Miami's heat and humidity return Tuesday, but afternoon storms are waiting in the wings. Rain chances rise through Labor Day weekend.

Detroit climbs to 92 degrees Tuesday with a heat index near 100 and storm chances returning late in the day. A cooler, unsettled Labor Day weekend follows.