Floodwaters could disrupt travel across San Antonio this Labor Day morning as heavy showers linger under a Flood Watch until noon. Drivers should avoid low-water crossings along I-35 and surrounding roadways where creeks and streams may quickly overflow.
According to the National Weather Service in Austin/San Antonio, one to two inches of rain may fall before storms move out by midday. Excessive runoff could flood poor drainage areas and urban streets, with warnings possible if rainfall intensifies. Officials urge residents to turn around at flooded crossings and monitor alerts through the morning.
By afternoon, drier skies and rising temperatures will take over. San Antonio will reach highs near 91 today, with a return to hot and mostly sunny conditions Tuesday as Meteorological Fall begins. Temperatures will climb into the mid to upper 90s through midweek, bringing typical late-summer heat back to the region.
Nationally, attention shifts skyward tonight as NOAA’s Space Weather Prediction Center reports the Northern Lights may stretch into the Midwest and New England through Tuesday morning. While Texas won’t see the display, residents in states from Virginia to Colorado could spot rare aurora activity if skies remain clear.
For San Antonio, the week ahead turns quieter and hotter, with another chance of storms returning by the weekend.
Five Day Forecast for San Antonio, TX
- Tuesday: Sunny, high near 96, low 75
- Wednesday: Sunny, high near 98, low 73
- Thursday: Mostly sunny, high near 98, low 73
- Friday: Mostly sunny, high near 96, low 76
- Saturday: 20% chance thunderstorms, high near 92, low 75
