San Antonio, Texas – Drivers across South-Central Texas may need to brace for a hot and stormy Thursday as fall begins with summer-like extremes. Dangerous heat combined with afternoon thunderstorms could bring slick roads, sudden delays, and power outages in parts of Bexar County.
According to the National Weather Service, San Antonio will heat up to near 95 degrees Thursday before storms develop after 1 p.m. A 40 percent chance of showers and thunderstorms could bring lightning and downpours, especially along I-35 and Loop 410. Motorists are urged to allow extra time for the evening commute and avoid flooded roadways.
Temperatures remain well above normal for late September, with heat index values climbing past 100 through Wednesday. A stronger storm push Wednesday night carries a 70 percent chance of widespread thunderstorms, raising risks for brief flooding and travel delays.
City crews warn residents to keep phones charged, clear drainage areas, and secure outdoor items before storms arrive. South and east winds near 10 mph may increase storm gusts to 20 mph during the afternoon.
Friday brings drier air and sunshine with highs around 90, continuing into Saturday as fall settles in with calmer weather. No significant cool down is expected yet, though early October could mark the first signs of cooler mornings.
Forecasters note storm chances taper by Thursday night, but unsettled conditions may return early next week. Updates will follow if new advisories are issued.
Five-Day Forecast for San Antonio, Texas
- Tuesday: Hot, high near 100. Mostly clear at night, low around 77.
- Wednesday: High near 95 with storms likely by late afternoon. Low near 72.
- Thursday: High near 88, scattered thunderstorms after 1 p.m. Low around 68.
- Friday: Sunny, high near 90. Mostly clear, low near 68.
- Saturday: Sunny and warm, high near 91. Calm winds.
