COASTAL FLOODING: Heaviest rain stays relegated to coast, flooding likely. A tropical depression or storm may develop soon.
VERY HOT THURSDAY: Heat index could soar above 110°
MORE RAIN CHANCES: Friday & Saturday
FORECAST
TODAY
A few spotty downpours around San Antonio this afternoon, as an area of low pressure is sweeping across South Texas and into the Gulf today. This low could even briefly take on tropical characteristics, and perhaps become a tropical storm as it hugs the coast. However, the result is the same: scattered rain and the risk of flash flooding along the Gulf Coast.
Even if the disturbance along the Gulf Coast gets a title and name, it doesn't change the minimal impacts of the system. (Copyright 2024 by KSAT - All rights reserved.)
HEAT KICKS UP
In the wake of this low, stable air will fill in over the area. This will limit clouds and allow temperatures to soar. By Thursday, highs could reach the mid to upper-90s. Meantime, at the surface, we’ll still have humid conditions. That means heat index values could be near 110° on Thursday afternoon!
Temperatures will soar on Thursday, with heat index values near 110°. (Copyright KSAT-12 2026 - All Rights Reserved)
MORE RAIN CHANCES
By Friday, another front will make a run for South Texas. This could kick up more showers & storms for the area. Rain chances will continue on Saturday and some heavy rainfall will be possible. Rain chances fall again by Sunday.
High heat index Thursday, storm chances return Friday afternoon. (Copyright 2024 by KSAT - All rights reserved.)
Daily Forecast
KSAT meteorologists keep you on top of the ever-changing South Texas weather.
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 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.