San Antonio, TX – Residents in San Antonio should prepare for a hot and humid Wednesday with temperatures rising to 97°F and a heat index nearing 102°F. A Flood Watch remains in effect through 1 p.m. Tuesday, signaling potential flooding due to slow-moving thunderstorms in the region. Stay alert for localized street flooding, especially near low-lying roads like portions of Loop 410.
According to the National Weather Service, scattered showers are expected early Wednesday, gradually clearing by midday. Southeast winds will gust up to 20 mph, making afternoon travel challenging on wet or slick roads. Local authorities urge drivers to avoid non-essential travel during heavy rain periods and to monitor flood-prone areas closely.
Through Wednesday night, skies will clear with lows around 74°F, but the heat will return quickly Thursday with highs near 96°F. This summer weather alert extends into the weekend, with mostly sunny and hot conditions through Monday, reaching highs around 99 to 100°F.
San Antonio residents should stay hydrated, limit outdoor activities during peak heat, and check emergency kits for weather preparedness. Power outages could occur if storms intensify, so charge devices ahead of time. The Flood Watch expires Tuesday afternoon, but heat advisories are expected to continue throughout the week.
5-Day Forecast for San Antonio, TX
- Wednesday: High 97°F, increasing clouds early, gradual clearing by afternoon. Heat index up to 102°F.
- Wednesday Night: Mostly clear, low 74°F, southeast winds 5-10 mph.
- Thursday: Mostly sunny, high near 96°F.
- Thursday Night: Partly cloudy, low 75°F.
- Friday: Mostly sunny, high near 95°F, calm winds shifting southeast.
- Weekend Preview: Mostly sunny and hot Saturday through Monday with highs from 97°F to 100°F.
Warnings remain in effect through Tuesday afternoon. Stay tuned for updates and avoid flood-prone areas.
