San Antonio

Sunny Skies and Soaring Temps with Heat Index Over 100 Expected in San Antonio’s Week Ahead

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Published on August 10, 2025
Sunny Skies and Soaring Temps with Heat Index Over 100 Expected in San Antonio’s Week AheadSource: Google Street View

San Antonio is set for mostly sunny skies and hot conditions in the week ahead, with occasional showers and thunderstorms, according to the National Weather Service. Temperatures will linger in the upper 90s, with heat index values expected to climb into the low 100s.

Starting today, there's a "20 percent chance of showers and thunderstorms after 4pm," with a high temperature nearing 98 degrees and a heat index possibly rising as high as 103. The wind is expected to remain mild, turning east southeast in the afternoon. For those planning evening outings, the skies will be mostly clear as the chance of rain slightly drops before sunset, as per the National Weather Service.

Monday’s forecast shows a similar trend, with a small chance of showers early in the afternoon, followed by the possibility of showers and thunderstorms later. Skies will be mostly sunny, with highs near 97 and heat index values possibly reaching 102. The evening is expected to stay mostly clear, with lows around 76.

The rest of the week maintains a similar pattern. Tuesday and Wednesday each have a 20 percent chance of afternoon showers and thunderstorms. Thursday is forecast to be sunny and hot, with a high near 99, and clear conditions are expected to continue into the night. Weekend temperatures are projected to remain high, with Saturday likely reaching the upper 90s.