South Texas Heat Index to Reach 102°F This Week
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). Tuesday and Wednesday will be the hottest days, with highs around 93°F (33.9°C) and heat indices between 101°F (38.3°C) and 103°F (39.4°C). Overnight lows will remain warm, hovering in the mid-70s (23.9°C). Humidity levels will be high, contributing to the muggy conditions. A cold front is expected to arrive by Friday, potentially bringing cooler temperatures and scattered thunderstorms. However, the timing and strength of the front remain uncertain. Sunday offers a brief respite, with cooler morning temperatures in the upper 60s (20°C) in San Antonio and even cooler lows in the Hill Country.
