San Antonio, TX – Residents should prepare for a significant surge in heat and humidity this week as temperatures climb into the high 90s. The sweltering conditions will create dangerous heat index values, peaking on Wednesday afternoon and posing a health risk to those without adequate cooling.
According to the National Weather Service, Wednesday will become mostly sunny with a high near 97 degrees. Southerly winds of 10 to 15 mph, with gusts as high as 25 mph, will offer little relief as the heat index is expected to reach a blistering 104 degrees. Conditions will remain warm and muggy into the evening, with a low of around 77 degrees.
The intense heat continues into the Juneteenth holiday on Thursday, with partly sunny skies and a high temperature of 94 degrees. Health officials urge residents to take precautions against heat-related illness. Stay hydrated by drinking plenty of water, avoid strenuous activities during the hottest part of the day, and check on elderly family members and neighbors. Never leave children or pets unattended in vehicles.
Friday will bring mostly sunny skies and a high near 94 before a slight pattern change arrives for the weekend. A 20 percent chance of showers and thunderstorms enters the picture on Saturday afternoon, continuing into Sunday and Monday. Despite the chance for rain, high temperatures will remain in the low to mid-90s.
The possibility of rain offers a small sign of relief, though the heat remains the primary concern through the end of the week.
Five-Day San Antonio Forecast:
- Wednesday: Becoming sunny with a high near 97°F. Heat index values as high as 104.
- Thursday (Juneteenth): Mostly sunny with a high near 94°F.
- Friday: Mostly sunny with a high near 94°F.
- Saturday: A 20 percent chance of showers and thunderstorms after 1 p.m. Mostly sunny, with a high near 94°F.
- Sunday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94°F.
