San Antonio

San Antonio Braces for Sweltering Heat Wave with Highs Nearing 100 Degrees

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Published on June 05, 2025
San Antonio Braces for Sweltering Heat Wave with Highs Nearing 100 DegreesSource: Google Street View

San Antonians can expect a series of warm days ahead, according to the latest weather forecast. Today's conditions are looking mostly sunny, with temperatures soaring to a high near 95 degrees, and heat index values edging up to a sweltering 102. The National Weather Service advises residents to prepare for a steady southeast wind moving at 5 to 10 mph.

Tonight, the skies will shift, bringing increasing clouds and a low settling around 76, while the wind picks up to an occasional 20 mph gust. The forecast for tomorrow doesn’t stray far from today's, with mostly cloudy skies early on that will clear up, giving way to sunny weather and highs near 95 degrees once again. Heat index values could climb a notch higher, to approximately 103.

The weekend promises a continuation of heat. Saturday is set to be mostly sunny with high temperatures nearing 98 degrees. Evening conditions are expected to stay mostly clear with lows around 77 degrees. A persistent south wind will blow at a mild 5 to 10 mph, with some stronger gusts at times. Sunday's temperatures will challenge the century mark, rising to a glaring high near 99 degrees, reminding residents of summer's immovable grip on the region.

Looking to the start of next week, Monday will maintain the sunny trend with highs hovering near 98 degrees. As the night encroaches, there's a shift forecasted; a 30 percent chance of showers and thunderstorms emerges, which might offer a brief respite from the intense heat. The possibility of rain and thunderstorms lingers into Tuesday and Wednesday, with a respective 40 and 30 percent chance of precipitation, according to the National Weather Service.