Heavy rain and thunderstorms moving through San Antonio

Locally heavy rain possible tonight and tomorrow

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FORECAST HIGHLIGHTS

• TONIGHT: Scattered storms, locally heavy rain

• SATURDAY: Hit-or-miss storms, sunshine too

• FATHER’S DAY: Mostly sunny, warm and humid

FORECAST

TONIGHT

Scattered storms are moving into the San Antonio area, so you may be awakened by thunder and heavy rainfall. A Flash Flood Warning is in effect, with 2.5 inches of rain already reported in some areas.

This activity is expected to continue through sunrise, so please exercise caution if you are heading out Saturday morning.

THIS WEEKEND

It won’t be a washout this weekend, but you’ll want to keep an umbrella handy. Scattered, pop-up showers are possible Saturday.

Father’s Day Weekend Weather Planner (Copyright KSAT-12 2026 – All Rights Reserved)

Clouds and rain will help take the edge off the heat at times, but it’ll still be warm and steamy with heat index values near 100–105° in spots. By Sunday, rain chances end as drier air moves in, bringing more sunshine for Father’s Day.

EXTENDED FORECAST

Looking ahead, the heat and humidity build again early next week with mostly dry conditions.

Rain chances through Saturday, then a sunny and dry stretch of weather. (Copyright 2024 by KSAT – All rights reserved.)Daily Forecast

KSAT meteorologists keep you on top of the ever-changing South Texas weather.

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Copyright 2026 by KSAT – All rights reserved.

About the Authors

• Shelby Ebertowski headshot
  

  Shelby Ebertowski

  Shelby Ebertowski joined KSAT 12 News in January 2025. She came to San Antonio from Fargo, North Dakota via the University of North Dakota, where she learned the ropes as a weekend forecaster over two years at KVLY. Her love of weather love began after experiencing Hurricane Harvey in 2017.

• Leah Rodriguez headshot
  

  Leah Rodriguez

  Leah Rodriguez joined the Weather Authority Team in 2026 after watching KSAT 12 while growing up in Pearsall. She graduated with a Bachelor’s Degree in Meteorology from Texas A&M University and worked in Lubbock for two years.

  When she’s not watching the radar, Leah enjoys spending time with her family and her dog Luby.