San Antonio Braces for Triple-Digit Heat and High Humidity This Weekend

San Antonio, TX, August 22, 2026 —

San Antonio residents are set to endure another sweltering weekend as temperatures are projected to soar, with highs expected to hover between 100°F and 102°F.

The National Weather Service has issued a Heat Advisory for the region, which will remain in effect through Sunday. During this period, heat index values, often referred to as ‘feels like’ temperatures, could reach or exceed 108°F. This combination of high temperatures and humidity poses a significant risk of heat-related illnesses for individuals exposed to the heat for extended periods.

Officials are advising residents to take precautions to stay safe. These typically include staying hydrated by drinking plenty of fluids, seeking air-conditioned environments, avoiding strenuous outdoor activities during the hottest parts of the day, and wearing lightweight, light-colored clothing.

The current heat wave shows no signs of immediate relief. Forecasters indicate that the trend of excessively warm weather is expected to persist into the upcoming week. Furthermore, there is a low probability of rainfall, offering little respite from the dry and hot conditions.

Residents are encouraged to monitor local weather updates for any changes in advisories or forecasts. As the heat continues, particular attention should be paid to vulnerable populations, including the elderly, young children, and those with chronic health conditions, who are more susceptible to the adverse effects of extreme heat.

Story summarized from the original created by Shelby Ebertowski, Leah Rodriguez on www.ksat.com, see more information here.

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