AUSTIN/SAN ANTONIO, TX – A challenging stretch of summer heat will grip the San Antonio area this week. Dangerous heat index values will mark the beginning of the work week. Residents will see heat indices climb as high as 104°F on Monday. These conditions create a significant health risk. People should limit strenuous outdoor activities. Staying hydrated is critical for safety.
According to the National Weather Service, Monday will feature decreasing clouds. The high temperature will be near 95 degrees. Winds will remain light from the south at 5 to 10 mph. The relentless heat continues into the middle of the week. Tuesday and Wednesday promise sunny skies and highs near 95 degrees. However, winds will become a factor for drivers.
Commuters along major corridors like I-35 and Loop 410 should prepare for gusty conditions. Southerly winds will increase to 10 to 15 mph on Tuesday. Gusts could reach as high as 20 mph. By Wednesday, those gusts may strengthen to 25 mph. These winds can make handling high-profile vehicles more difficult. Securing loose items outdoors is also advised.
A potential shift in the weather pattern arrives just in time for the Juneteenth holiday. A chance of showers and thunderstorms returns to the picture on Thursday afternoon. The day will be partly sunny with a high near 91 degrees. This could bring much-needed relief from the oppressive heat that will define the week. Residents should monitor for any watches or advisories as the week progresses.
Your Five-Day San Antonio Weather Outlook:
- Sunday: Partly sunny with a chance of thunderstorms. High near 95. Heat index values as high as 105.
- Monday: Mostly cloudy, then gradually becoming sunny. High near 95. Heat index values as high as 104.
- Tuesday: Sunny and hot. High near 95 with wind gusts up to 20 mph.
- Wednesday: Sunny and breezy. High near 95 with wind gusts reaching 25 mph.
- Thursday (Juneteenth): Partly sunny with a chance of afternoon thunderstorms. High near 91.
