If you’ve been feeling like summer has arrived early in San Antonio, you’re not alone. This week’s heat wave has shattered records, with temperatures soaring well above the usual March average. But don’t worry—a cold front is on the way, bringing much-needed relief just in time for the weekend.
With fire danger increasing, near-record temperatures, and big changes ahead, here’s everything you need to know to stay prepared.
Near-Record Heat Blazes Through San Antonio
San Antonio is no stranger to warm weather, but this week’s heat is exceptional for March. On Wednesday, March 12, temperatures hit a scorching 91°F, well above the normal 73°F for this time of year. By Thursday, March 13, things got even hotter, soaring to 95°F, breaking the previous record of 93°F set in 1971.
Why so hot? A strong high-pressure system over South Texas has been pushing in dry, warm air from Mexico, making it feel like early June instead of March. This pattern has also contributed to dangerously dry conditions, which brings us to the next big concern: fire danger.
Fire Risk Soars with Hot, Dry, and Windy Conditions
While many San Antonians love the warm weather, it comes with a serious downside—extreme fire risk.
The National Weather Service has issued a Red Flag Warning, meaning the conditions are ripe for wildfires to start and spread quickly. Here’s why:
- Hot Temperatures – The heat dries out grass, brush, and trees, turning them into fire fuel.
- Low Humidity – Dropping as low as 12% to 20%, the dry air makes it even easier for fires to ignite.
- Strong Winds – Gusts up to 35 mph could spread any fire rapidly.
Areas near and west of I-35, including Bexar County, are at the highest risk. If you live in these areas, avoid any outdoor burning, be cautious with grilling, and don’t discard cigarettes carelessly.
A Cold Front Brings Weekend Relief
Good news! A weak Pacific cold front is set to roll through Friday evening, bringing:
- Cooler temperatures – Highs dropping into the upper 70s on Saturday.
- Crisp nights – Lows dipping into the upper 40s by Sunday night.
- Breezy conditions – Winds will shift, making things feel fresher and more comfortable.
This will finally break the heat wave and bring temperatures closer to normal March weather.
How to Stay Safe This Week
- Stay Hydrated – It’s still hot out there, so drink plenty of water.
- Avoid Peak Heat – The hottest part of the day is 2 PM to 5 PM. Stay indoors when possible.
- Be Fire Aware – Don’t burn anything outdoors and be mindful of dry, windy conditions.
- Plan for the Cool Down – If you’re heading out over the weekend, a light jacket may be a good idea for the cooler mornings and evenings.
Final Thoughts
San Antonio’s March heat wave has been one for the record books, but relief is right around the corner. Enjoy the warmer weather while it lasts, but be mindful of the fire risks. And get ready—a comfortable, cooler weekend is on the way!
Stay safe, stay cool, and stay tuned for more updates!