Darkening clouds could quickly replace this morning’s sunshine across South Texas as another round of showers and thunderstorms develops later today. Wet pavement, brief downpours, and reduced visibility could affect the afternoon commute, while muggy air keeps conditions feeling much warmer than the thermometer suggests.
San Antonio, Texas – According to the National Weather Service Austin/San Antonio, the metro area will see a 20% chance of storms early this afternoon, with thunderstorm coverage increasing tonight as rain chances climb to 60%. Temperatures will reach 91 degrees, while the heat index could peak near 101 degrees before storms provide temporary relief.
Drivers along Interstates 10, 35, 37, Loop 410, and Loop 1604 should prepare for rapidly changing conditions after lunchtime. Brief heavy rain may reduce visibility and create ponding on roadways, especially during heavier thunderstorms. Allow extra travel time and avoid driving through water-covered roads.
The broader weather pattern across the southern Plains continues to support daily thunderstorm development. National forecasters note an active setup capable of producing locally heavy rainfall across parts of the South. While the greatest severe weather threat remains north of San Antonio, any stronger storm could still produce gusty winds, frequent lightning, and torrential rain. An isolated tornado cannot be completely ruled out in stronger thunderstorms, though the local risk remains low.
Rain chances continue through midweek. Tuesday brings a 50% chance of showers and thunderstorms with a high near 87 degrees. Wednesday features another 60% chance of showers and thunderstorms, holding afternoon temperatures near 86 degrees. Additional scattered storms remain possible Thursday before a gradual warming trend returns late week.
Keep your phone charged if you’ll be outdoors, monitor weather alerts before traveling, and move indoors immediately when thunder is heard. Lightning can strike well ahead of the heaviest rain.
Long-range outlooks suggest temperatures trend above normal again beyond this five-day period as South Texas settles back into a more typical midsummer pattern.
Five-Day Forecast for San Antonio, Texas
- Today: Partly sunny with a slight chance of afternoon thunderstorms. High 91°F. Heat index near 101°F.
- Tuesday: Chance of showers and thunderstorms. High 87°F.
- Wednesday: Showers and thunderstorms likely. High 86°F.
- Thursday: Chance of showers and thunderstorms. High 87°F.
- Friday: Partly sunny. High 89°F.
