Houston is starting Thursday near 80 degrees under clear skies, but the afternoon will bring mostly sunny conditions, a high near 95 and a heat index as high as 103. Most of the city should stay dry, although an isolated shower or thunderstorm could develop later, especially southwest of the metro area.
Thursday Forecast
Northeast winds will run around 5 to 10 mph as temperatures climb through the day, offering some movement in the air but not much relief from the heat. The Texas Commission on Environmental Quality has issued an Ozone Action Day for the Houston, Galveston and Brazoria areas through Thursday evening, adding an air-quality concern to the summerlike forecast.
Heat Can Vary Across Houston
According to Houston Advanced Research Center (HARC), afternoon readings during its August 10, 2024, H3AT mapping campaign differed by 14 degrees between the coolest and hottest areas surveyed. That past mapping result shows variation across the surveyed areas, not Thursday’s conditions; the reported finding alone does not identify the most vulnerable neighborhoods or populations.
Hoodline's September 20 Houston forecast covered Sunday and Monday, with heat continuing into midweek.
Looking Ahead
Friday should remain mostly sunny, with a high near 92 and an overnight low around 76. Saturday will be slightly cooler, near 91, but carries a 20% chance of showers and thunderstorms, while Sunday looks sunny with another high near 92.
The Coming Days
Scattered storm chances return Monday and become more noticeable Tuesday, when the forecast calls for a 40% chance of showers and thunderstorms after 1 p.m. Wednesday looks like the wettest day in the outlook, with showers and thunderstorms likely and a high near 87.
