Chicago is waking up to partly cloudy skies and warm, humid air Wednesday, with temperatures expected to climb toward 93 degrees. A heat advisory takes effect at noon as the afternoon heat index reaches 100 to 105, making this another day to take the heat seriously.
Heat Advisory Runs Through Wednesday Evening
The advisory covers Chicago and surrounding parts of Cook County from noon until 9 p.m. Southwest winds will run 5 to 15 mph, becoming breezier during the afternoon as the hottest conditions settle in.
The National Weather Service advises wearing lightweight, loose-fitting clothing, limiting strenuous outdoor activity and watching for signs of heat exhaustion or heat stroke. The forecast calls for a low near 76 Wednesday night, with a slight chance of showers and thunderstorms after 1 a.m., according to the National Weather Service.
Storm Chances Rise Thursday Through Saturday
Thursday brings a high near 90 and a 40% chance of showers and thunderstorms, followed by a 50% chance Thursday night. Friday should be cooler, with a high near 83 and storms possible before 1 p.m., while Saturday stays unsettled with a high near 82 and another 50% chance of rain and thunderstorms.
The broader pattern could bring several rounds of thunderstorms through Saturday, and some storms may become severe. A cooler break is expected to develop early next week, with highs near 80 on Labor Day and Tuesday and overnight lows falling into the upper 60s.
