San Antonio

Heat Alert, San Antonio Braces for Sizzling Temperatures Nearing 100 Degrees This Week

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Published on July 21, 2025
Heat Alert, San Antonio Braces for Sizzling Temperatures Nearing 100 Degrees This WeekSource: Google Street View

Residents of San Antonio should brace themselves for a stretch of intense heat this week, as the city's forecast indicates temperatures will soar near the century mark. According to National Weather Service, the high for today is expected to be around 97 degrees, with heat index values climbing to a scorching 102 degrees. The accompanying south southeast wind blowing at 5 to 10 mph, and gusting as high as 20 mph, bringing little relief to the sizzling temperatures.

The sultry conditions are slated to continue into the evening, with increasing clouds and a low settling at a warm 77 degrees. The wind, not wanting to be left out, will be from the southeast, playing between 5 to 15 mph, with potential gusts up to 25 mph. Looking forward to Tuesday, the city is forecast to experience partly sunny skies, with the mercury nudging even higher to a near 98 degrees and heat index values peeking just above at 101, as reported by the National Weather Service.

The pattern of increasing clouds repeats itself Tuesday night, as the low dips slightly to a warm 76 degrees. Southeast winds will persist, hovering at 5 to 15 mph, with gusts towering as high as 20 mph. Come Wednesday, sunshine dominates again, urging temperatures to a near constant 98 degrees, while winds transition to a steady southern flow at a mild 5 to 10 mph, as stated by the National Weather Service.

Thursday will be sunny and very hot, with a high around 99 degrees—the hottest day of the week. Winds will be light, picking up slightly from the south in the afternoon. Thursday night will be partly cloudy, with temperatures dropping to a more comfortable 77 degrees. Light winds will shift from the east-southeast to the south after midnight, as noted by the National Weather Service.

The heat wave shows only signs of persisting into the weekend, with forecasts from Friday through Sunday suggesting mostly sunny conditions and highs teetering around 97 to 98 degrees. Nightfall brings only modest relief, with lows hovering persistently around the upper 70s, as per the National Weather Service. San Antonio's residents and visitors are advised to prepare for these prolonged toasty temperatures and to stay hydrated and cool as the city swelters under the Texas sun.