San Antonio is in for another scorcher on Friday, June 12 — a high of 92°F with a heat index that could hit 100°F makes this a day to plan smart and hydrate constantly. Check your full San Antonio weather forecast and read on.
Today’s Setup
The National Weather Service is tracking a slight chance of scattered rain showers before 1 PM CT, with isolated thunderstorms possible through the afternoon and a 20% overall chance of precipitation. If you’re planning a River Walk lunch or an afternoon at Brackenridge Park, be ready to duck inside early — any storm that pops up could bring a fast burst of rain before tapering off near sunset. Southeast winds run 5 to 10 mph all day with no real relief from the humidity. The overnight low settles near 76°F with mostly clearing skies.
Heat and Flood Risk
NWS forecasters are emphasizing afternoon heat index values of 100 to near 105°F through Sunday — real heat stress territory. Anyone working outdoors near Lackland Air Force Base or Fort Sam Houston should limit exertion during peak hours (11 AM–4 PM CT). moisture wicking undershirts men are worth every penny in this humidity, and keeping an insulated tumbler 30oz filled with ice water on hand all day is a must. The Weather Prediction Center has flagged a Marginal Risk of excessive rainfall across the region today. San Antonio’s Flash Flood Alley reputation is earned — never drive through a low-water crossing, even if the water looks shallow.
NBA Finals Game 5: Spurs vs. Knicks Saturday
The whole city is locked in. The NBA Finals: New York Knicks at San Antonio Spurs Game 5 tips off Saturday, June 13 at Frost Bank Center. It’s an indoor arena, so the 92°F heat outside won’t follow you in — but if you’re gathering on the River Walk beforehand, isolated storms are possible after 1 PM CT, so plan to move inside before tip. Wear your San Antonio Spurs jersey proud, and if you still need a seat, Find tickets on StubHub before they’re gone.
Upcoming Shows at Frost Bank Center
The Don Toliver: Octane Tour hits Frost Bank Center on Monday, June 15 — right as a cold front sweeps through South Central Texas. Expect scattered showers that evening, but it’s an indoor show so the weather won’t spoil it. Grab a Don Toliver t-shirt and lock in your spot with Get tickets on SeatGeek.
Tonight’s Dinner
Skip the oven entirely — this heat is smoothie bowl weather. Blend a cold Thai noodle salad or fruit smoothie bowls with a high-powered blender and keep everything cold through the humid evening. Need ingredients? You can order groceries on Amazon and have everything for tonight’s dinner delivered to your door.
Next Few Days
Saturday: 92°F, heat index near 101°F, isolated storm chance after 1 PM CT. Sunday stays hot as the upper ridge holds. Then the big change: a rare June cold front pushes through South Central Texas on Monday, bringing scattered showers and thunderstorms and slightly cooler temperatures into early next week. The National Weather Service notes the severe storm threat looks low at this time, but stay updated as the front draws closer.
