San Antonio, TX – Triple-digit heat will continue to grip San Antonio through at least Monday, with heat index values reaching up to 104°F and little overnight relief for residents. Highs near 101°F today and 99°F Saturday will keep the area dangerously hot, while lows struggle to dip below the upper 70s.
According to the National Weather Service, southeast winds may offer slight relief overnight, but the persistent sun will keep conditions oppressive through the weekend. Those working or exercising outdoors should take frequent breaks, hydrate often, and avoid peak afternoon hours. Key roadways like I-35, I-10, and neighborhoods on the city’s south and west sides will be especially hot, with little shade and heat lingering well after sunset.
By Monday, a 20 percent chance of afternoon thunderstorms could bring brief relief, but temperatures will still hover near 97°F. While any rainfall will help, the best shot at a cool-down looks to arrive Tuesday, when storm chances edge up slightly, though highs remain in the upper 90s.
Residents are urged to check on elderly neighbors, limit strenuous outdoor activities, and never leave children or pets in vehicles. Heat advisories could be extended if the weather pattern persists. Keep up with local alerts as conditions can change quickly.
Five Day San Antonio, TX Forecast:
- Friday: Sunny and hot, high near 101°F, low 77°F.
- Saturday: Sunny and hot, high near 99°F, low 76°F.
- Sunday: Sunny, still hot, high near 97°F, low 76°F.
- Monday: Sunny, slight chance of afternoon storms, high near 97°F, low 76°F.
- Tuesday: Hot with a 20% chance of storms after 1 p.m., high near 98°F, low 77°F.




