San Antonio, Texas – Storm chances will build across San Antonio this weekend, with the National Weather Service calling for scattered showers Saturday and heavier rain likely by Sunday afternoon. While temperatures will hover near 90, high humidity and unstable air could bring downpours strong enough to slow travel on major roads including I-35 and Loop 410.
According to the National Weather Service, showers could start as early as Saturday morning, with storms most likely after 1 p.m. Rain chances rise sharply Sunday, with storms possible before dawn and continuing through evening hours. Northeast winds of 10 to 15 mph may push heavier bands of rain into Bexar County and surrounding Hill Country areas.
Localized flooding could develop in low-lying spots if storms stall, though widespread flooding is not expected at this time. Drivers are urged to allow extra time during downpours and avoid water-covered roadways. Outdoor events across downtown San Antonio and the River Walk may face weather interruptions through Sunday night.
Conditions should gradually improve Monday, though scattered storms may linger before skies clear by Tuesday. Sunshine and hotter afternoons are expected to return midweek.
Five Day Forecast for San Antonio, TX
- Saturday: High near 93, scattered afternoon thunderstorms.
- Sunday: Showers and storms likely, high near 91.
- Monday: Isolated storms, high near 90.
- Tuesday: Sunny, high near 94.
- Wednesday: Sunny, high near 96.
