A few strong storms are possible overnight
Rain chances peak tonight and Sunday night (Copyright KSAT-12 2026 – All Rights Reserved)
FORECAST HIGHLIGHTS
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MOSTLY CLOUDY TODAY: Small chance for rain, warmer
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STORM CHANCE TONIGHT: Scattered storms this evening through sunrise Saturday
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CLEARING SATURDAY: Turning mostly sunny, only a stray afternoon storm
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MOTHER’S DAY: Quiet and hot, storm chance returns after sunset
FORECAST
TODAY
Clouds will hold most of today, with a chance of isolated shower throughout the day. Despite cloud cover, temperatures will rebound into the upper-70s.
THIS EVENING/TONIGHT
An upper-low will bring scattered storms to the forecast. Initially, storms will develop along the Rio Grande and push east overnight. Severe weather is possible, especially south of Highway 90. Should a cluster of storms develop, heavy rainfall would also be possible.
Future radar at 10pm tonight (Copyright KSAT-12 2026 – All Rights Reserved)
SATURDAY
Storms will quickly clear the area, pushing east of I-35 by the morning. This will give us clearing skies and warm temperatures. By the afternoon, a stray storm can’t be ruled out, but the odds are low.
MOTHER’S DAY
The daytime hours will be quiet and hot. High temperatures should reach the low-90s, with mostly sunny skies. A cold front will sweep through after sunset on Sunday. This likely generates another round of storms. Any rain should clear the area by Monday morning.
Mother’s Day weekend forecast (Copyright KSAT-12 2026 – All Rights Reserved)Daily Forecast
KSAT meteorologists keep you on top of the ever-changing South Texas weather.
QUICK WEATHER LINKS
Copyright 2026 by KSAT – All rights reserved.
About the Author
Justin Horne headshot
Justin Horne
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.
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