San Antonio is waking up warm and sticky on Wednesday, June 10, with a high near 93°F and a heat index that could reach 103°F by mid-afternoon — if you’re planning a River Walk stroll or time at Brackenridge Park, get out early or wait until evening.
Today’s Setup
The National Weather Service has an upper-level ridge parked over South-Central Texas, with a warm, moist southeast flow keeping dewpoints in the 70s since early morning. SSE winds of 5 to 10 mph won’t provide real relief once the sun gets going. Expect partly sunny skies through midday before clouds increase heading into the afternoon.
Storm Risk and Timing
The main window to watch is after 4 PM CT, when isolated showers and thunderstorms become possible mainly along and east of the I-35 and I-37 corridors — that zone includes downtown San Antonio, the Pearl District, and southeast-side neighborhoods. Precipitation chances hold at 20%, so most of the city stays dry. That said, this is Flash Flood Alley: a brief, intense storm can still produce rapid runoff near the San Antonio River and Salado Creek low-water crossings. Any lingering storms should clear well before 7 PM CT.
Best Window To Be Outside
Anything before 10 AM CT is your sweet spot. After that, heat index values climb fast toward 103°F and the sun gets relentless. Morning runners at McAllister Park or the Salado Creek Greenway have the right idea. Keep an insulated tumbler 30oz loaded with ice water on you all day — in a San Antonio June, that’s not optional.
What To Wear Or Bring
Light, breathable fabric is the call. A pair of men’s sport sandals works perfectly for anything from the Pearl Farmers Market to afternoon errands. Save the dark colors and heavy shoes for fall.
Upcoming Events
If you’re making the drive up I-35, the Charlie Puth: Whatever’s Clever! World Tour hits Moody Center ATX in Austin on Thursday, June 11 — dress light and grab tickets on SeatGeek before you go.
Back in the Alamo City: mark June 13 for NBA Finals Game 5 — the San Antonio Spurs host the New York Knicks at Frost Bank Center. It’s indoors, so the 93°F heat won’t affect tip-off, but pre-game parking lots will be full-on summer. Rep the silver and black with Official team gear on Fanatics. And on Sunday, June 14, Don Toliver’s Octane Tour rolls into Frost Bank Center — Find tickets on StubHub and pick up a Don Toliver t-shirt for the show.
Too Hot To Cook
Skip the stove tonight. Cold Thai noodle salad, a build-your-own wrap bar, or smoothie bowls are the move when the heat index is above 100°F. A high-powered blender knocks out smoothie bowls in under a minute. Need ingredients? You can order groceries on Amazon and have everything for tonight’s dinner delivered to your door.
Next Few Days
Thursday looks nearly identical: partly sunny, high near 93°F, heat index potentially reaching 105°F, and very low rain chances (under 10%). Overnight lows both tonight and Thursday night hold near 77°F with southeast gusts up to 25 mph. The National Weather Service expects the ridge to hold through the weekend before rain chances slowly climb into early next week as high pressure weakens. Keep an eye on the San Antonio weather forecast for updates as that timing firms up.
