San Antonio Braces for Weekend Weather Whiplash

Scorching heat Thursday gives way to storms, cooler temps on Saturday

Apr. 16, 2026 at 2:07pm

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A sweeping, atmospheric landscape painting depicting a stormy, cloudy sky over a flat, desolate plain, using deep perspective and dramatic lighting to convey the overwhelming scale of an approaching weather system.As a powerful cold front approaches, the vast, brooding skies over San Antonio foreshadow the dramatic weather shift to come.San Antonio Today

San Antonio is set to experience a dramatic shift in weather conditions over the next few days, with scorching heat on Thursday giving way to a chance of storms and much cooler temperatures by the weekend. Forecasters are warning residents to prepare for the potential of heavy downpours and gusty winds on Saturday as a cold front moves through the region.

Why it matters

Sudden changes in weather can disrupt daily routines, outdoor plans, and pose safety risks, especially for vulnerable populations. San Antonio's location makes it prone to rapid weather swings, and residents need to stay informed to plan accordingly.

The details

On Thursday, temperatures are expected to climb into the upper 80s to low 90s under partly sunny skies, with southerly winds adding to the warm, muggy feel. Overnight lows will only drop to the upper 60s, providing little relief. However, a cold front is forecast to arrive on Saturday, bringing a 40-50% chance of showers and thunderstorms, some potentially heavy. This will flip the winds to the north and significantly drop temperatures, with highs only reaching the upper 60s to around 80°F on Saturday and continuing into the mid-60s on Monday.

  • Thursday afternoon temperatures are expected to peak near 90°F.
  • The cold front is forecast to arrive on Saturday morning.
  • Gusty northerly winds up to 25-30 mph are likely Saturday night into Sunday.

The players

National Weather Service Austin/San Antonio

The local office of the National Weather Service that provides weather forecasts and warnings for the San Antonio region.

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What’s next

Residents should monitor the latest weather forecasts and be prepared to adjust their plans if severe storms or heavy rain develop on Saturday.

The takeaway

San Antonio's weather can change dramatically in a short period, and residents need to stay vigilant and flexible to safely navigate these rapid shifts in temperature, precipitation, and wind conditions.