Watching for a weak cold front next week
A few showers should pass through San Antonio Thursday and Friday, but most of it will be west and closer to the Rio Grande. (Copyright KSAT-12 2026 – All Rights Reserved)FORECAST HIGHLIGHTS
TODAY & TOMORROW: Only light, spotty rain
THURSDAY & FRIDAY: Light rain possible for San Antonio, but heavy and more impactful rain likely west (Rio Grande)
HALLOWEEN: Still looking nice, mild, likely quiet. Only a stray shower possible.
FORECAST
OVERNIGHT AND WEDNESDAY
A few stray sprinkles are possible tonight along with just a few isolated showers tomorrow. Accumulations would be minimal.
RAIN CHANCES ON THURSDAY/FRIDAY
Thursday, moisture from Tropical Storm Vance will surge north ahead of a storm system. This will set up a corridor of heavier rain along the Rio Grande, mainly west of San Antonio. Still, San Antonio has a chance to see some passing showers from Thursday through late Friday. As of now, rainfall totals in San Antonio will likely stay below half an inch. Those along the Rio Grande could see totals of 1-3″.
Potential rainfall accumulation over the next 5 days. The best odds for 1″+ rainfall will be east of I-35. (Copyright KSAT-12 2026 – All Rights Reserved)
HALLOWEEN UPDATE
By Halloween, a quieter pattern will be taking over. While we can’t rule out a shower, the odds of rain are low. More sunshine will push highs above 80 during the afternoon. By trick-or-treat time, much of the area will be in the 70s, making for comfortable conditions.
Halloween forecast preview (Copyright KSAT-12 2026 – All Rights Reserved)Daily Forecast
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About the AuthorsSarah Spivey headshot
Sarah Spivey
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.
Justin Horne headshot
Justin Horne
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.