THIS WEEKEND San Antonio faces a potential record-breaking Saturday as temperatures climb to an estimated 102 degrees-103 degrees.

While a slight afternoon drop in humidity may provide a marginal reprieve for heat index values, the extreme heat poses a significant safety risk for outdoor activities, making precautions essential.

There's a 10%-20% chance of isolated afternoon showers or thunderstorms in parts of the Hill Country, with brief heavy rain, lightning, and gusty winds possible.