San Antonio, TX – The morning overcast is quickly burning off as a surge of unseasonable heat pushes South Texas temperatures toward a blistering 90°F by this afternoon. Residents stepping outside will feel a dramatic shift from the morning humidity to a dry, windy heat that mimics mid-summer rather than late March.
According to the National Weather Service, San Antonio and the surrounding Bexar County region are under a significant warming trend as an upper-level ridge shifts across the Plains. While the morning started with 77% humidity and gray skies, south winds will increase to 15 mph, with gusts reaching 20 to 25 mph by the midday commute. These dry, gusty conditions can heighten fire risks across open fields and increase turbulence for high-profile vehicles on I-10 and Loop 1604.
The immediate concern for locals is the rapid 20-degree jump in temperature within just a few hours. This “summer tease” brings heat intensity nearly 25 degrees above the seasonable average for March. Health officials recommend hydrating early, especially for those working outdoors or preparing for Spring Break travel.
As we look toward the weekend, the heat holds steady through Friday before a cold front arrives to reset the region. By Saturday, daytime highs will drop to a much more comfortable 82°F under mostly sunny skies. Drivers should remain alert for shifting wind patterns through Thursday night, as gusts remain active even after the sun sets. For now, enjoy the warmth but keep the AC ready as the 90-degree mark stays in play through tomorrow afternoon.
Five Day Forecast for San Antonio, TX
- Thursday: Mostly cloudy then gradual clearing, high near 90°F. Windy with gusts to 20 mph.
- Friday: Mostly cloudy morning, becoming sunny with a high near 90°F.
- Saturday: Mostly sunny and cooler, high near 82°F. North winds gusting to 20 mph.
- Sunday: Mostly sunny and pleasant, high near 86°F.
- Monday: Partly sunny with a high near 89°F.
