The latest forecast from Your Weather Authority (Copyright KSAT-12 2026 - All Rights Reserved)
FORECAST HIGHLIGHTS
HOT & HUMID: Feeling like 100°+ through the weekend
MOISTURE + FRONT: These two combine to bring best rain chances Monday through Tuesday
FORECAST
THURSDAY AND FRIDAY
Mornings will start overcast with a few spotty showers possible for areas within the Coastal Plains. Skies will clear up by the afternoon and high temperatures will push into the low and mid 90s with heat indexes feeling like the low 100s. Chances for showers are less likely in the afternoon. Friday will follow the same layout.
WEEKEND
On Saturday, deep tropical moisture will surge back into South Texas at all layers of the atmosphere. This will allow for downpours to make a comeback. Coverage should be isolated on Saturday, with a few more scattered showers on Sunday. It won’t be a washout, but some could see brief, heavy rainfall.
Flooding is possible next week (Copyright KSAT-12 2026 - All Rights Reserved)
MONDAY & TUESDAY
By Monday, good moisture will be in place when a weak frontal boundary shifts south through Texas. These two features will result in our best chances for rain on Monday, Monday night, and Tuesday. Heavy rainfall with flooding would be possible, so this is your early heads up! We’re still waiting on exact locations, timing, and amounts. Continue to check back!
Very high moisture and a cool front will combine to allow for storm chances to increase Monday and Tuesday of next week (Copyright KSAT-12 2026 - 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.