Heat index values soar as high-pressure ridge intensifies
The latest forecast from Your Weather Authority (Copyright KSAT-12 2026 – All Rights Reserved)FORECAST HIGHLIGHTS
THIS WEEK: Each day will be sunny & hot with highs near or just above 100°
RAIN: Not likely this week, only spotty by weekend
NUECES: Finally receding near Cotulla, major flooding expected near Three Rivers & George West later this week
FORECAST
TURNING UP THE HEAT
Each day will feature abundant sunshine and hot weather, as a heat high settles over Texas. Temps will be near or just above 100° each afternoon.
Rain will only be very spotty over the weekend as the heat high moves west. Chance is a measly 10%-20% by the weekend.
NUECES RIVER FLOODING
Even though the weather is quiet, the torrential rain we saw 2 weeks ago is still moving downstream through the Nueces River.
River flooding continues along the Nueces from rains 2 weeks ago (Copyright KSAT-12 2026 – All Rights Reserved)
The Cotulla area is finally seeing the river recede, but communities in Live Oak County need to be on alert, as major flooding will begin from near Three Rivers to George West later this week.
The next area to flood along the Nueces is from Three Rivers to George West in Live Oak County. It will reach major flood stage by Thursday morning, and last through the weekend. (Copyright KSAT-12 2026 – 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 AuthorsSarah Spivey headshotSarah Spivey
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.
Shelby Ebertowski headshotShelby 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.