San Antonio

San Antonio Braces for a Blend of Summer Heat and Storms, Temperatures to Hit Near 100 Degrees

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Published on August 13, 2025
San Antonio Braces for a Blend of Summer Heat and Storms, Temperatures to Hit Near 100 DegreesSource: Google Street View

As the summer settles in over San Antonio, the city braces for a mix of sunny skies and potential storms. According to the National Weather Service, today boasts a 30 percent chance of showers and thunderstorms picking up after 1 pm. The heat will not shy away, as temperatures are expected to soar near 96 degrees, with the heat index pushing a sweltering 102.

The evening forecast offers a slight reprieve with a drop to a 20 percent chance of rain before 10 pm. Tonight, temperatures in the city will dip to around 76 degrees, accompanied by a light east-southeast breeze. The heat wave will persist through the coming days, with Thursday’s high expected to reach 98 degrees and a heat index near 104.

As the week draws to an end, Friday's conditions mirror those of the previous days—mostly sunny with highs back at 97 degrees. The promise of gusts as high as 20 mph accompanied by the South southeast wind should offer some solace. However, nighttime carries the possibility of more showers and thunderstorms after 1 am, with a 20 percent chance of precipitation setting the stage, as detailed by the National Weather Service.

The weekend holds a steady rhythm, mixing rays and rain—a slight chance of showers on Saturday, turning to a 30 percent chance of showers and thunderstorms come afternoon. The trend of partly sunny with highs in the mid-90s holds firm. And as Sunday rolls in, it ushers in heights of near 98 degrees, with the workweek beginning on a similarly scorching note.

To wrap the forecast, Tuesday teases with a 20 percent chance of showers and thunderstorms among an expanse of mostly sunny skies, and highs once again teasing that 98-degree mark. San Antonians will need to take heed of heat safety measures during this stretch, as the relentless sun bears down on the city. For a full look at the extended forecast, visit the National Weather Service website.