San Antonio is looking at a mostly sunny, scorcher of a day with a high near 95°F and heat index values climbing as high as 101, so if you’ve got outdoor plans, front-load them before lunch. South wind stays light at 0 to 10 mph, and while a few stray coastal-moisture showers could sneak in south of Highway 90 per the National Weather Service, most of the Alamo City stays dry today.
Today’s Setup
The NWS Austin/San Antonio office notes a weak shear axis stretched between lows over Mexico and the mid-Mississippi Valley is squeezing out a little more rain coverage than expected south of Highway 90, but for most of the metro — River Walk, Alamo Plaza, Southtown — it’s a mostly sunny, low-humidity-relief kind of day with only a 10% rain chance. Tonight stays mostly clear and warm, dropping to around 75°F with south-southeast wind gusting to 20 mph.
Best Window To Be Outside
Get your River Walk stroll, Brackenridge Park jog, or Fort SamHam/Lackland base errands done before 11 AM CT, while temps are still climbing. By early afternoon the heat index near 101 makes prolonged sun exposure rough on kids, pets, and anyone working outside. Evening after 7 PM CT, once the sun angle drops, is your second-best window.
Rain, Heat, Or Flood Risk
Today and Thursday stay mostly rain-free with heat as the dominant story — Thursday holds near 94°F with heat index again up to 100. The bigger shift, per the AFD, is rain chances increasing again Friday through the weekend as a disturbance moves in (Friday’s forecast already shows a 30% chance). With San Antonio’s flash-flood-alley reputation and River Walk low points, it’s worth watching that trend as the weekend nears, even though nothing severe is flagged for today.
What To Wear Or Bring
Light, breathable clothing and constant hydration are the move. An insulated tumbler 30oz keeps water cold through a hot commute or Spurs practice-facility parking lot wait, and if you’re headed to a pool or the river, a Yeti hopper soft cooler holds up better than a bag in this heat. For anyone doing yardwork, an outdoor yoga mat makes stretch breaks in the shade more comfortable.
If you’re catching the Dude Perfect - Squad Games Tour 2026 show at Moody Center ATX this Thursday, July 9, expect a warm evening commute — grab tickets on SeatGeek and gear up with a Dude Perfect t-shirt, Dude Perfect hoodie, or Dude Perfect hat for the crowd.
Helpful Links
For more outdoor gear picks in this heat, check our outdoor gear deals page, including the 2-Person Intex Floating Lounge with Cooler — a solid way to beat the heat index if you’ve got pool or river access this weekend.
Dinner Tonight
With heat index near 101, skip the stove — a cold Thai noodle salad, build-your-own wrap bar, or smoothie bowls made with a high-powered blender are the smart call tonight. Need ingredients? You can order groceries on Amazon and have everything for tonight’s dinner delivered to your door.
Next Few Days
Expect the same sunny, hot pattern Thursday near 94°F, before rain chances tick up Friday into the weekend as a disturbance approaches — a welcome change of pace, but one worth watching given San Antonio’s flood-prone low spots.
