Sarah Spivey, KSAT Weather Authority Meteorologist
San Antonio rain chances through Monday 4/13/26. (Copyright 2024 by KSAT - All rights reserved.)
FORECAST HIGHLIGHTS
TOMORROW: Morning mist. Quiet in San Antonio, but a few storms near the border
WEDNESDAY: Warm and humid. Slight rain chance (20%)
WEEKEND: Cool front brings rain chances, cooler temps. NOT A WASH OUT
FORECAST
TUESDAY & WEDNESDAY
Tuesday will play out very similar to Monday, with any storms staying west of San Antonio. That said, any storm that develops along the Rio Grande or in the Hill Country could quickly become strong to severe.
Severe weather risk on Tuesday (Copyright KSAT-12 2026 - All Rights Reserved)
By Wednesday, an upper-level storm system may push showers and storms a little closer to San Antonio. Still, our odds of rain remains fairly low (20%). Temperatures will stay warm.
FIESTA
The start of Fiesta on Thursday is forecast to be quiet, but warm. Highs will be pushing 90 both Thursday and Friday.
Fiesta Event planner (Copyright 2026 by KSAT - All rights reserved.)
WEEKEND
A cold front is expected to slide through on Saturday bringing scattered showers. It’ll also cool us down nicely for the second half of the weekend. In fact, lows in the 50s are likely Sunday morning, while highs will fall back into the 70s.
Highest rain chances Saturday and Monday. Cold front drops temperatures for the weekend and early next week. (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.
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.