San Antonio wakes up to a hot, mostly sunny Thursday with a high near 99°F and a heat index climbing to 108°F by afternoon — the kind of day where getting your outdoor plans done early and ducking into the shade or A/C after lunch is the smart move.
Today’s Setup
The National Weather Service’s Austin/San Antonio office says a subtropical ridge parked near the Four Corners is steering southeasterly flow across South-Central Texas, keeping the air mass hot and moist. Rain chances sit at just 2% today, so it stays dry around the Alamo City, while a few spots out toward the Coastal Plains could briefly brush Heat Advisory criteria this afternoon. San Antonio should stay just under that mark, but 108°F still demands real caution.
Best Window To Be Outside
Mornings are the play. South-southeast winds stay light at 5 to 10 mph, and temperatures are far more bearable before 10 AM CT, whether you’re walking a stretch of the River Walk or getting a round in. Golfers should grab a sunrise tee time — a golf club set complete and a pair of breathable golf shorts men make an early nine far more comfortable. Anglers heading toward Hill Country waters should also fish the first couple hours of daylight before the bite shuts down with the heat.
Heat Risk
This is a heat story, not a storm one. Overnight lows only fall to around 77°F with the heat index still near 105°F, so there’s little relief after dark. Stay hydrated, check on elderly neighbors and pets, and never leave anyone in a parked car — worth remembering with Lackland AFB and Fort Sam Houston families out and about this week. A portable misting fan on the patio and firing up the propane gas grill instead of the stove will make evening cookouts far more bearable.
What To Wear And Bring
Light, breathable clothing, sunscreen, and water bottles are non-negotiable. Hosting a backyard hangout? A rolling cooler with wheels makes hauling drinks out easy, and a citronella candle set keeps the bugs off once the sun goes down.
This Weekend Around Town
Hamilton (Touring) hits the Majestic Theatre San Antonio on August 9, and the Don Toliver concert — his Octane World Tour — plays Moody Center ATX that same night, with NE-YO and Akon’s Nights Like This Tour following on August 11. Expect hot, dry conditions for arrivals both nights. Grab tickets on SeatGeek, and pick up a Don Toliver t-shirt before the show.
Dinner Tonight
This is prime grilling weather — burgers, steaks, or grilled chicken with corn on the cob cook up perfectly tonight. Use an instant-read meat thermometer to pull steaks at the right temp and a grill brush and scraper set to keep the grates clean between courses. Need ingredients? You can order groceries on Amazon and have everything for tonight’s dinner delivered to your door.
Next Few Days
Friday eases back just slightly to a high near 97°F with a heat index near 104°F, and the upper ridge holds near the Four Corners into next week, meaning Saturday through Wednesday stay hot and close to normal with humidity trending a bit lower. Track updates at the San Antonio weather forecast and browse outdoor gear deals to stay ready for the heat.
