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Fiesta week: Daily storm chances start Wednesday in San Antonio

Parades *could* be impacted, but it depends on a late week cool front

The latest 7 Day Forecast from Your Weather Authority (Copyright 2025 by KSAT - All rights reserved.)

FORECAST HIGHLIGHTS

  • TONIGHT: A few spotty showers
  • TUESDAY: Muggy and mild
  • RAIN CHANCES INCREASE: Wednesday through Saturday
  • IMPACT TO PARADES: Possible, but don’t cancel any plans

FORECAST

We’re entering into what may be busy weather pattern, but that doesn’t mean it’ll rain everyday, all day. In fact, some of us could avoid storms all together. With that said, it’s Fiesta time, so let’s discuss what may lie ahead.

OVERNIGHT & TUESDAY

A few spotty showers and even a rumble of thunder will be possible overnight.

Tuesday, expect partly to mostly cloudy skies and highs in the upper-80s. In the evening, we’ll be watching storms develop out west. They’ll likely fizzle out, but they may have enough energy to make it to San Antonio. Much better rain chances by the middle of the week...

INCREASING RAIN CHANCE WEDNESDAY

Fiesta weather headlines. (Copyright 2025 by KSAT - All rights reserved.)

An area of low pressure will arrive Wednesday. This will bring rain chances up, with a few showers and drizzle early in the day, and a chance for a storm or two in the afternoon and evening. While the odds of seeing a storm are low, any storm that develops could become severe.

THURSDAY THROUGH SATURDAY

During this timeframe, we’ll be watching a weak front sliding into the area. It’s along this front that storms may develop. The odds look to be highest Friday into Saturday, but these fronts are notoriously tricky and the timing could change. Obviously, we’ve got two big parades Friday and Saturday, and we’ll be finetuning this forecast as we get closer.

The latest 7 Day Forecast from Your Weather Authority (Copyright 2025 by KSAT - All rights reserved.)

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About the Authors
Justin Horne headshot

Justin Horne is a meteorologist and reporter for KSAT 12 News. When severe weather rolls through, Justin will hop in the KSAT 12 Storm Chaser to safely bring you the latest weather conditions from across South Texas. On top of delivering an accurate forecast, Justin often reports on one of his favorite topics: Texas history.

Sarah Spivey headshot

Sarah Spivey is a San Antonio native who grew up watching KSAT. She has been a proud member of the KSAT Weather Authority Team since 2017. Sarah is a Clark High School and Texas A&M University graduate. She previously worked at KTEN News. When Sarah is not busy forecasting, she enjoys hanging out with her husband and cat, and playing music.

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