South Texas Heat Index to Reach 102°F This Week
South Texas Heat Index to Reach 102°F This Week
US · Published Oct 12, 2026
• South Texas is bracing for a late-season heat wave, with temperatures expected to feel more like mid-June than October.
• High temperatures in San Antonio are forecast to reach 91°F (32.8°C) on Monday, with heat index values climbing to 99°F (37.2°C).

Impact & Risks

The high heat and humidity pose risks for outdoor workers and those spending extended time outside. Heat index values exceeding 100°F (37.8°C) can lead to heat-related illnesses if precautions are not taken. Residents are advised to stay hydrated, wear light clothing, and take frequent breaks. While isolated showers and storms may develop early in the week, rain chances are low at 20%. The anticipated cold front on Friday could bring scattered thunderstorms, some of which may be strong, along with cooler temperatures. However, the exact impacts of the front are still uncertain.

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