San Antonio is starting Tuesday partly sunny with a high near 86°F and a 50% chance of showers and thunderstorms — grab a compact travel umbrella before stepping out this morning.
Today’s Setup
A stalled front and a slow-moving tropical disturbance tracking north-northeastward from northern Mexico are keeping the atmosphere packed with deep tropical moisture. The National Weather Service has a Flood Watch in effect for portions of the Coastal Plains through this evening. While the heaviest rainfall should stay south of downtown San Antonio, any storm that fires up today can tap that moisture and produce brief but intense downpours. The River Walk — Paseo del Río — is a flash flood concern; heed any city flood advisories before strolling along the banks. Northeast wind 5 to 10 mph today.
Best Window To Be Outside
Your best outdoor window is early morning. Storm chances peak during the afternoon hours, then ease to around 30% before 7 PM CT tonight, with skies becoming partly cloudy overnight. If you’re headed to Brackenridge Park, Friedrich Wilderness Park, or out toward the Hill Country, try to wrap up activities by late morning. Tonight’s low settles near 74°F.
Rain and Flood Risk
The Weather Prediction Center has flagged a Moderate Risk of Excessive Rainfall for the Texas Gulf Coast today — and San Antonio sits at the northern edge of that threat. Flash Flood Alley earns its name: intense storms can briefly produce 2-to-3-inch hourly rainfall rates. Do NOT drive through flooded roadways — turn around, don’t drown. Pack a packable rain jacket and slip a waterproof phone pouch in your bag if you’ll be outside for any length of time.
What to Bring
Dress light and breathable — humidity is high. The compact travel umbrella is your MVP today for errands near the Alamo, the Pearl District, or anywhere downtown. Keep your eyes on local alerts throughout the afternoon.
Events This Week
Spurs fans, this is the one. The San Antonio Spurs host the New York Knicks in a potential NBA Finals Game 7 on June 19 at Frost Bank Center. It’s an indoor arena so weather is no factor — but lock down seats now. Find tickets on StubHub or Get tickets on SeatGeek before they vanish, and grab your Official team gear on Fanatics for the watch party at home or downtown.
Also on June 19, Kali Uchis brings her For The Girls Tour with special guest Mariah The Scientist to Germania Insurance Amphitheater — an outdoor venue. Rain chances return by Friday and linger into the weekend, so check the forecast again before heading out.
Rainy Day Dinner
Stormy San Antonio afternoons were made for slow-cooked comfort food. Load up a programmable slow cooker with a thick beef chili, or let an enameled cast iron Dutch oven do the work with a rich beef stew — either one fills the house with a smell that beats the rain outside. Need ingredients? You can order groceries on Amazon and have everything for tonight’s dinner delivered to your door.
Next Few Days
Wednesday brings a sharp turnaround: mostly sunny, high near 92°F, but the heat index could hit 103°F with nearly calm winds. Thursday is forecast to be the hottest day of the stretch, according to the National Weather Service Austin/San Antonio office — limit outdoor exposure during peak afternoon heat if you’re working near Lackland Air Force Base or Fort Sam Houston. Rain chances return Friday and continue into the weekend, so keep flexibility in any outdoor plans. Track it all at the San Antonio weather forecast and browse outdoor gear deals if you’re prepping for a weekend activity.
