Austin, Texas – A surge of intense heat is building across Central and South Texas this Saturday, creating potentially dangerous outdoor conditions by the afternoon. Along the busy I-35 corridor, residents and workers are being urged to take precautions as the heat index climbs close to triple digits.
According to the National Weather Service in Austin-San Antonio, the heat index — or “feels like” temperature — is expected to rise between 98°F and 102°F from around 3 p.m. to 6 p.m. Cities like Austin and San Antonio will experience the most noticeable impact, with high humidity making the air feel significantly hotter than actual temperatures in the upper 80s to mid-90s.
Why It Feels Hotter Than Usual
Recent rainfall across the region has increased moisture in the air, which plays a major role in raising the heat index. When humidity is high, sweat does not evaporate as efficiently, making it harder for the body to cool down. This can quickly lead to fatigue, dehydration, and in severe cases, heat-related illnesses.
Areas Most Affected
Communities along and around the I-35 corridor — including New Braunfels, San Marcos, Georgetown, and Del Rio — are expected to face similar or even higher “feels like” temperatures, potentially reaching up to 104°F in some spots through early next week.
Major roadways such as I-35 and I-10 could also see indirect impacts. Prolonged exposure to extreme heat can increase the likelihood of vehicle overheating and breakdowns, especially during peak afternoon hours.
Storm Threat Adds Another Layer of Risk
While the heat dominates the forecast, there is also a chance of isolated thunderstorms developing after 2 p.m., mainly east of the I-35 corridor. These storms may bring sudden hazards, including strong wind gusts exceeding 60 mph, hail, and lightning. Even brief storms could disrupt travel plans and outdoor activities.
Safety Tips for the Weekend
Officials advise residents to limit outdoor activity during the hottest part of the day. Staying hydrated is critical — drinking water every 20 minutes can help prevent heat exhaustion. People are also encouraged to check on elderly family members, children, and anyone without access to proper cooling.
If thunderstorms begin to develop, it’s important to move indoors immediately, as lightning and strong winds can become dangerous within minutes.
What to Expect Next
The combination of high heat and storm chances is expected to continue through Sunday evening. While some gradual relief may arrive early next week, the weekend will remain challenging for outdoor work, travel, and events across Central Texas.
Authorities continue to monitor conditions and urge residents to stay alert as weather patterns shift throughout the day.
