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Weather San Antonio, TX

San Antonio Weather Today: Hot 94°F With Heat Index Near 105°F

Best Window Tuesday: 94°F, Mostly Cloudy
Rain Risk Elevated
What To Wear / Bring Rain layer, water-resistant shoes, and a backup indoor plan
Useful Links Local forecast, radar, and relevant planning links
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7-Day Forecast

Tue 94°Mostly Cloudy
Wed 89°Mostly Cloud...
Thu 84°Mostly Cloudy
Fri 80°Showers And ...
Sat 70°Partly Sunny
Sun 77°Sunny
Mon 84°Partly Sunny

San Antonio is waking up to a warm, humid Tuesday with a high near 94°F and heat index values climbing to around 105°F—so leave the heavy outdoor work for another day and stay cool.

Tonight into early Wednesday, the National Weather Service is tracking a pair of cold fronts moving through Texas, and while today stays mostly dry with only a 5% rain chance, conditions change dramatically mid-week. Our local forecasters note that low clouds may linger into early afternoon before scattering out, so don’t be fooled by the gloomy morning—it’ll heat up fast once the sun breaks through. Expect south-southeast winds at 5 to 10 mph, gusting to 20 mph.

If you’ve got the Spurs Rd 1 Game 5 against the Trail Blazers at the Frost Bank Center tonight (April 28), you’re in luck—it’s indoors and air-conditioned. The arena will be a perfect escape from the heat. Grab Official team gear on Fanatics to show your support, and if you’re tailgating beforehand in the parking lot, bring plenty of water and consider setting up a portable propane grill to cook before heading inside.

For golfers eyeing the links this week, today is borderline—the heat index is pushing 105°F, so early morning or late evening rounds are smarter. If you do venture out, invest in a golf glove men leather and golf shoes men waterproof to stay comfortable. Better yet, wait until Wednesday or Thursday when temperatures drop and rain chances increase; the cooler air will feel great.

Fishermen should note that conditions remain calm today with light winds—a solid fishing window at area lakes like Calaveras Lake or Medina Lake, though the heat will keep you seeking shade.

Mid-week outlook: Wednesday brings a slight chance of showers and thunderstorms after 1 PM CT, with only a 20% precipitation chance early on. However, the National Weather Service forecasters are watching a stronger system arrive Friday with the highest rainfall potential of the week. If you’re planning the iHeartCountry Festival at Moody Center ATX on May 2, or catching Romeo Santos & Prince Royce at the Frost Bank Center that same evening, keep an eye on the Friday rain—you may want to grab a hydration backpack and bandana face cover just in case. Get tickets on SeatGeek or Find tickets on StubHub for either event.

For tonight’s dinner, fire up the grill while you can—perfect grilling weather for burgers, steaks, or grilled chicken with corn on the cob. An instant-read meat thermometer and grill brush and scraper set will help you nail the cook. Need ingredients? You can order groceries on Amazon and have everything for tonight’s dinner delivered to your door.

By the weekend, expect drier conditions and a gradual warm-up heading into early next week. Stay hydrated, take breaks in the AC, and keep an eye on that Friday rain system.

Live Radar — San Antonio Area

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Live weather radar for San Antonio, TX

Radar data from the National Weather Service