Rain chances gradually rising until they peak Monday into Monday night. (Copyright 2024 by KSAT - All rights reserved.)
FORECAST HIGHLIGHTS
HOT & HUMID: Heat index near 100°
WEEKEND: Isolated rain Saturday, scattered rain around Coastal Plains Sunday
MONDAY-TUESDAY: Heavy rain for some, street flooding possible
FORECAST
TODAY & FRIDAY
Temperatures will rise into the lowers 90s but heat index values will peak near 100°-104° Friday afternoon. Also, a few pop up showers are possible at any moment throughout the day.
WEEKEND
A surge of deeper moisture will slowly arrive throughout the day. This will help produce isolated downpours in the afternoon hours on Saturday (30%). Temperatures return to the 90s.
Sunday, the atmosphere becomes saturated. This will allow for downpours to become more widespread (40%). These downpours will produce heavy rainfall for some.
Highest rainfall accumulations at the end of the weekend will be east of San Antonio.
Estimated rainfall totals through Monday evening. (Copyright 2026 by KSAT - All rights reserved.)
MONDAY & TUESDAY
These are days we’ll be monitoring closely. By Monday, the entire atmosphere will be saturated as a weak front will shift into the area, helping to wring out some of that moisture. Widespread heavy downpours are expected (60%). This will continue into Monday night and potentially into the first half of Tuesday. Street flooding is a concern during this timeframe.
Rain chances gradually rising until they peak Monday into Monday night. (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.
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.