Brief afternoon showers possible but unlikely to bring lasting relief
We settle in to a continued hot, 100°+ streak. (Copyright 2026 KSAT 12 — ALL RIGHTS RESERVED)FORECAST HIGHLIGHTS
SATURDAY: Hot with highs reaching near 102° again
SUNDAY: Around 100° or hotter, mostly dry
HEAT ADVISORY: Heat Advisory in effect through Sunday for heat indices reaching 108°+.
NEXT WEEK: The August heat wave isn’t going anywhere anytime soon with little rain relief
FORECAST
THIS WEEKEND
San Antonio hit the hottest afternoon this summer at 103°!
San Antonio hit the hottest temperature of the summer this afternoon. (Copyright 2026 by KSAT – All rights reserved.)
Sunday will bring more of the same, with temperatures again expected to reach 100° or higher. Lower humidity in the afternoon keeps heat index values similar to air temperatures, but the extreme heat continues to pose a significant safety risk for outdoor activities.
HEAT STICKS AROUND
The unrelenting heat wave is set to continue, as high pressure maintains triple-digit temperatures throughout the coming week with minimal precipitation expected to provide any cooling.
Extended forecast (Copyright 2026 by KSAT – All rights reserved.)Daily Forecast
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About the AuthorsShelby 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.
Leah Rodriguez headshotLeah 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.