San Antonio is heading into a furnace of a weekend. Temperatures were near 79 degrees under clear skies before sunrise Saturday, but the afternoon high is expected to reach 103 with a heat index near 107. The overnight low will only fall to about 77, offering limited relief.
The National Weather Service has a Heat Advisory in effect through 7 p.m. Sunday for San Antonio and nearby portions of the I-35 corridor. The broader advisory area could see temperatures up to 105 and heat index values as high as 111, while Sunday is expected to bring another high near 103 and a heat index around 106, according to NWS Austin/San Antonio.
Saturday Stays Mostly Sunny And Mostly Dry
Skies should remain mostly sunny Saturday, with light winds generally staying between 0 and 5 mph. Rain chances in San Antonio are only a few percent, although an isolated shower or brief storm could develop farther north toward the Hill Country and Austin area during the afternoon.
Triple-Digit Heat Lingers All Week
The heat wave is not packing its bags after Sunday. Highs are expected to reach about 102 degrees Monday through Thursday and 101 on Friday, while overnight lows remain in the upper 70s; south winds could gust up to 25 mph Monday and Tuesday nights.
Plan Outdoor Time Early Or Late
The National Weather Service advises residents to drink plenty of fluids, stay in air conditioning or shade, wear lightweight clothing and limit strenuous activity during the hottest part of the day. Outdoor workers should take frequent breaks in shaded or air-conditioned areas, and anyone showing signs of heat stroke should be moved to a cool location while 911 is called.
San Antonio’s hot-weather guidance also points residents toward local heat resources and 311 for help finding places to stay cool. Checking on neighbors, older adults and anyone without reliable air conditioning could be especially important during this extended stretch of near-100-degree afternoons.
