San Antonio Weather Update: Scattered Showers Move West with Overnight Rainfall Possible

Residents across San Antonio and South Central Texas should prepare for overnight showers and isolated thunderstorms, especially in areas west of the city. While not everyone will see rain, some spots could pick up 1 to 2 inches, particularly closer to the Edwards Plateau and Rio Grande Plains.

Heaviest Rain Shifts West Overnight

The National Weather Service in Austin-San Antonio reports that rain chances increase late Tuesday night into early Wednesday, but the heaviest showers are expected west of San Antonio, especially in:

Uvalde

Del Rio

Eagle Pass

Cities farther north and east, like Austin, New Braunfels, and Georgetown, will see lower chances of measurable rainfall as most of the activity remains scattered and westward.

Quick rain outlook:

Up to 2 inches possible in isolated areas

Rain most likely late tonight into early Wednesday

Scattered, not widespread, but brief downpours may occur

Travel Alert: Wet Roads Possible Overnight

Even though widespread flooding is not expected, brief, heavy showers could lead to ponding on roadways, especially in low-lying spots. Drivers on U.S. 90 and I-35 should be extra cautious overnight.

Road safety reminders:

Don’t drive through water-covered roads

Slow down during rain and increase following distance

Watch for slick patches and reduced visibility

Also, keep phones charged and flashlights handy, as isolated thunderstorms could cause brief power interruptions in some areas.

Temperatures: Mild and Humid Overnight

Temperatures across South Central Texas will stay warm but slightly cooler overnight thanks to increased cloud cover and rain chances.

Overnight lows:

Hill Country: Upper 60s

San Antonio and I-35 Corridor: Mid-70s

Along Rio Grande Plains: Mid to upper 70s

Humidity levels will remain high, with a sticky feel to the air continuing through midweek.

More Rain Midweek?

The rain won’t stop with tonight’s round. Lingering moisture could bring another chance of showers and storms as the week continues. While no major systems are expected, scattered rain remains in the forecast.

Three-Day Forecast for San Antonio, TX

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