San Antonio, Texas – Locally heavy rain is creating a dangerous mix of flash flood threats and steamy summer heat for San Antonio and surrounding cities, with drivers along I-35 urged to remain cautious through Sunday evening and into Monday. Roads already soaked by up to 4 inches of rain could become hazardous again, as another round of showers and thunderstorms arrives to start the workweek.
According to the National Weather Service in Austin/San Antonio, a Flood Watch stays in effect until 7 p.m. Sunday for Bexar, Comal, and surrounding counties. Meteorologists warn that rainfall totals could reach 9 inches in isolated spots, especially along flood-prone creeks and low-lying areas. Commuters on I-35 and city roadways may face flooded intersections and fast-changing conditions, particularly during Monday morning’s drive.
San Marcos, New Braunfels, and suburban neighborhoods across the metro area should prepare for street flooding, rising streams, and possible power outages. With saturated ground from overnight storms, it will take less rain to trigger dangerous runoff. Emergency managers recommend avoiding water-covered roads, keeping mobile devices charged, and staying informed through local alerts.
On Monday, expect scattered thunderstorms, a high near 94°F, and muggy conditions that could push heat index values above 100°F. Slight rain chances linger into Monday night, but drier weather returns by Tuesday, followed by a warmup.
Summer weather hazards remain a risk through Sunday night. More storms are possible Monday, but midweek will bring a shift to hotter, mostly sunny days. Stay alert for updated advisories, especially if living near creeks or flood-prone roads.
Five-Day Forecast for San Antonio:
- Monday [July 14]: Chance of showers and thunderstorms, mainly after 10 a.m. High 94°F. Humid.
- Monday Night: 30% chance of storms before 7 p.m., then mostly cloudy, low near 76°F.
- Tuesday: Mostly sunny, slight rain chance. High 96°F.
- Tuesday Night: Mostly cloudy, low 77°F.
- Wednesday: Mostly sunny, hot. High 97°F.
- Thursday: Partly cloudy, low 75°F, high 97°F.
- Friday: Mostly sunny, high near 97°F.
Warnings remain in effect through Sunday. Continue to check for local updates as San Antonio shifts from wet roads to a hot and humid summer week.
