Knoxville will see a hot, mostly sunny Labor Day with a chance of afternoon thunderstorms. The heat builds Tuesday and Wednesday before wetter weather returns Thursday and Friday.

Memphis will hit 97 degrees under sunny skies Monday, with another round of upper-90s heat Tuesday and Wednesday before storms return late Thursday.

Pittsburgh gets a sunny, comfortable Labor Day before temperatures rise and thunderstorms return Wednesday night. Thursday could bring heavy rain and isolated flooding.

About 23,000 Coatesville-area customers must skip lawn watering and car washes as storm runoff overwhelms treatment filters.

NASA astronaut Don Pettit's orbital snapshots, taken 13 years apart, show Miami-Dade's streets shifting from sodium-orange to a patchwork of LED hues.

Greenville faces a wet, cooler Labor Day with showers, fog and gusty winds before sunny skies and rising heat return Tuesday.

Charlotte gets a cooler Labor Day after a stormy weekend, but the heat returns quickly. Storm chances rise again late this week.

Boston gets a sunny Labor Day near 78 degrees, but beachgoers face dangerous rip currents. Showers and possible thunderstorms return late this week.

Cleveland gets a sunny Labor Day, but an 88-degree Wednesday and late-day storms are already lining up.

Kansas City faces a 99-degree day and heat index near 105 before thunderstorms bring cooler weather Wednesday.

Louisville gets a sunny Labor Day with an 89-degree high, but midweek heat peaks Wednesday before thunderstorms arrive Thursday.

Jacksonville’s Labor Day forecast calls for afternoon thunderstorms, cooler temperatures and localized flooding concerns. More rain is expected through midweek.

Detroit gets a sunny Labor Day with a high near 79 before warmer weather and midweek storm chances arrive.