Extreme Heat Warning is in effect for Thursday (Copyright KSAT-12 2026 - All Rights Reserved)
FORECAST HIGHLIGHTS
EXTREME HEAT THURSDAY: Highs mid 90s, heat index 108-111°
STORM CHANCE FRIDAY NIGHT: Next chance of rain is late Friday, Saturday
FORECAST
It won’t so much be the temperature tomorrow, instead, it’ll be the humidity. An afternoon high in the mid 90s is only about 3° above average and far from record challenging (104°), but the unusually high humidity will lead to heat index values up to 111° Thursday afternoon.
While we are no stranger to heat, we have not seen heat indices this high in a few years. If you work outdoors or plan to spend extended time outdoors tomorrow, you’ll want to be careful.
RAIN CHANCES RETURN FRIDAY INTO SATURDAY
Friday will be hot, too. Thankfully, a weak cold front will slide south into the area by Friday evening. The front likely washes out over the area, but not before cooling us down some and bringing a shot at storms. Plus, an area of low pressure over the Rio Grande may also aid in getting some storms going Friday night and into the day Saturday.
Heat index up to 110° Thursday, then storm chances return Friday and Saturday. (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.
Adam Caskey has been a meteorologist with KSAT's Weather Authority team since April 2014. He previously worked in North Dakota and Washington, D.C., where he earned the "Certified Broadcast Meteorologist" designation by the American Meteorological Association. A native Minnesotan, Adam loves to fish and enjoys the outdoors.