Weather
South-Central Texas Weather Update: Heat Index 102° Oct. 12
SAN ANTONIO, TX – October sunshine will bring summerlike heat to San Antonio this week, with Monday's heat index potentially reaching 102 degrees and afternoon temperatures remaining in the 90s throug
By Miles Carter · 2026-10-11T06:32:18.523Z
SAN ANTONIO, TX – October sunshine will bring summerlike heat to San Antonio this week, with Monday's heat index potentially reaching 102 degrees and afternoon temperatures remaining in the 90s through Wednesday.
The prolonged warmth could affect outdoor workers, students participating in afternoon activities and residents spending extended periods outside during the Columbus Day holiday.
According to the National Weather Service, Monday, Oct. 12, will bring partly sunny skies and a high near 94 degrees. Heat index values could reach 102 degrees, making conditions feel considerably hotter than the actual temperature.
Residents planning outdoor activities should drink water regularly, take breaks in shaded areas and avoid prolonged exposure during the hottest afternoon hours.
Sunday, Oct. 11, begins the warming stretch with decreasing clouds and temperatures reaching approximately 93 degrees. South southeast winds could gust to 25 mph.
Monday's temperatures climb another degree, with southeast winds around 5 to 10 mph.
The heat continues Tuesday, Oct. 13, when mostly sunny skies push afternoon temperatures near 95 degrees. Southeast winds could gust to 20 mph.
Wednesday, Oct. 14, brings another high near 95 degrees, extending the unusually warm pattern across the San Antonio area.
Relief begins arriving Wednesday night, when temperatures fall near 76 degrees. A 20% chance of showers and thunderstorms develops after 1 a.m. Thursday.
Five Day Outlook: Thursday, Oct. 15, brings a 40% chance of showers and thunderstorms, with temperatures reaching approximately 91 degrees.
Friday turns slightly cooler, with a 20% chance of showers and highs near 85 degrees.
Saturday, Oct. 17, brings mostly sunny skies and a high near 79 degrees.
While no official heat advisory appears in the supplied forecast, residents should remain mindful of the prolonged afternoon warmth and monitor updated weather information as rain chances increase later this week.