San Antonio is facing a hot, muggy Saturday, June 6 — temperatures will climb to near 90°F with a heat index that could feel like 101°F by early afternoon, making this a day to plan carefully around the heat. A brief early-morning storm chance clears before 7 AM CT, leaving most of the city with a partly sunny but sweltering afternoon.
Today’s Setup
According to the National Weather Service Austin/San Antonio office, any lingering rain chances today stay mostly east of the I-35/I-37 corridor — think areas closer to Seguin or Gonzales, not downtown or the Hill Country. An isolated shower or storm can’t be ruled out along the I-35 corridor, but for most San Antonio neighborhoods expect a mostly dry, partly sunny afternoon with south-southeast winds of 0 to 10 mph. Don’t let the cloud cover fool you — that heat index near 101°F is real. Lather up with SPF 50 sunscreen before stepping outside.
Best Window To Be Outside
Get out early. Whether you’re running the San Antonio River Walk, taking the kids to Brackenridge Park, or knocking out yardwork, try to wrap up by 10 AM CT. After that, the heat index ramps up fast and the humidity gets punishing. Carry an insulated tumbler 30oz filled with water and keep sipping — San Antonio’s June heat doesn’t negotiate.
Heat & Humidity Risk
With heat index values near 101°F, today is serious June heat. Outdoor workers — including personnel at Lackland AFB and Fort Sam Houston — should prioritize shade breaks and hydration during the 11 AM–5 PM CT window. If you’re spending time near the River Walk or the city’s green spaces, toss some mosquito repellent spray in your bag too; the sticky humidity has the bugs out in force along the water.
Events This Weekend
Monster Jam is at Moody Center ATX today (June 6) — an indoor venue, so no heat worries inside. Madison Beer brings her locket tour to Moody Center ATX on June 8; Find tickets on StubHub while they last, and pick up a Madison Beer t-shirt to wear to the show. The Charlie Puth Whatever’s Clever! World Tour rolls into Moody Center ATX on June 11 — Get tickets on SeatGeek now before the weekend rush.
Skip The Oven Tonight
It’s too hot to cook — cold Thai noodle salad, smoothie bowls, or a build-your-own wrap bar are exactly right for a 90°F day. Blend everything up in a high-powered blender and keep drinks ice-cold all day. Need ingredients? You can order groceries on Amazon and have everything for tonight’s dinner delivered to your door.
Next Few Days
Sunday brings more of the same: mostly cloudy, high near 91°F, heat index up to 102°F, and SSE winds 5–15 mph with gusts near 20 mph. Rain chances Sunday are minimal at around 7%. Slip into a pair of men’s sport sandals to stay comfortable through another scorcher. The National Weather Service expects warmer and drier conditions heading into next week, with most of San Antonio staying rain-free. Stay updated with the San Antonio weather forecast and check out outdoor gear deals to stay prepared for the heat ahead.
