Extended Forecast (Copyright KSAT-12 2026 - All Rights Reserved)
FORECAST HIGHLIGHTS
RECORD HIGH?: Should we hit 103° today, we’d tie a record
100s CONTINUE: Streak of triple digit days continues through midweek
FIRE CONCERNS: Grassfire threat, especially east of I-35 rising
RAIN CHANCE: Isolated showers & storms on Thursday
FORECAST
RECORD HIGH TODAY?
Those blazing hot temperatures we saw over the weekend will bleed over into today and tomorrow. Highs will be in the 102°-103° range. Should we hit 103° today, that would tie a record high for the date last set in 2013. Lower humidity levels during the afternoon will keep heat index values in check.
Highs today (8/24/26) (Copyright KSAT-12 2026 - All Rights Reserved)
CURRENT STREAKS
Current streaks as of Monday morning (8/24/26) (Copyright KSAT-12 2026 - All Rights Reserved)
FIRE CONCERNS
While we haven’t really talked much about grassfire potential due to July’s rainfall, it’s dried out enough that the threat is starting to return. This is especially true for those areas east of I-35. Here’s today’s fire danger forecast. San Antonio sits in a “high” threat, while North Texas will see an “extreme” fire threat.
Forecast Fire Danger for Monday (8/24/26) (Copyright KSAT-12 2026 - All Rights Reserved)
RAIN CHANCES
The heat high makes a move west by midweek. While subtle, it may be just enough to open the door for some energy moving north to south. Isolated showers and a storm or two will be possible Thursday afternoon. This may also help to drop high temps slightly.
Futurecast for Thursday (8/27/26) shows isolated showers and storms developing. (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.