San Antonio is in for a classic South Texas scorcher this Sunday, with partly sunny skies, a high near 94°F, and a heat index climbing to 101°F by afternoon, according to the National Weather Service. If you’ve got outdoor plans, knock them out before mid-morning or wait until evening — this isn’t a day to be caught outside at 2 p.m. without water.
Today’s Setup
NWS forecasters in Austin/San Antonio say a broad subtropical ridge is expanding over the region through Monday, pushing temperatures back to near or slightly above normal for mid-July. South southeast winds stay light at 5 to 10 mph, offering little relief. Rain chances today sit at just 1%, and the dry pattern holds through the start of next week.
Best Window To Be Outside
Get outside early. Sunrise temperatures are still in the mid-70s, and the heat index doesn’t spike into triple digits until later in the day, so a 7 or 8 a.m. run, walk, or tee time is your best bet — golf conditions are calm and dry with that light SSE breeze. Anglers should aim for the same early window; pack a live bait aerator bucket to keep bait fresh, and it’s a good time to score Strike King crankbaits from $6 at Bass Pro Shops before heading out.
Heat, Flood, And Rain Risk
Heat is today’s real hazard — 94°F air temperature with a heat index up to 101°F this afternoon, and Sunday night only cools to near 73°F with the heat index still near 100°F after dark. Separately, the NWS reports river flooding continues along the Nueces, Frio, San Antonio, and Rio Grande basins as floodwaters recede from earlier rain. No new rain is expected, but avoid any high water near the San Antonio River or River Walk corridor, and never drive through a flooded road.
What To Wear Or Bring
Light, breathable clothing and steady hydration are the priority — quick dry swim trunks are a smart call if your afternoon involves a pool or the river. A 2-Person Intex Floating Lounge with Cooler makes a calm-water afternoon a lot more bearable once temperatures peak, and a portable bluetooth speaker helps pass the time on a shaded porch.
Gameday, Concerts & Weekend Plans
Grupo Frontera brings the Triste Pero Bien C*bron Tour to Frost Bank Center tonight. Still need seats? Get tickets on SeatGeek or Find tickets on StubHub before doors open, and grab a Grupo Frontera t-shirt or Grupo Frontera hat to wear to the show. Looking ahead, AC/DC’s POWER UP TOUR rolls into the Alamodome on July 24, and Hot Wheels Monster Trucks Live Glow-N-Fire hits Frost Bank Center on July 25.
Tonight’s heat makes this ideal grilling weather — burgers, steaks, or grilled chicken with corn on the cob all work well once the sun starts dropping. Keep an instant-read meat thermometer and grill brush and scraper set handy, and you can order groceries on Amazon if you need to stock up first.
Helpful Links
Check the full San Antonio weather forecast for updates, and browse outdoor gear deals to gear up for the heat.
Next Few Days
Monday looks nearly identical — sunny, a high near 95°F, heat index around 100°F, and light winds. Monday night cools to near 72°F under clear skies. The hot, dry pattern holds through the start of next week, so keep the hydration routine going.
