San Antonio kicks off Thursday at a pleasant 87°F with a slight chance of afternoon showers and thunderstorms — but don’t let that mild start fool you, because rain chances ramp up significantly heading into the weekend.
Today’s Setup
The National Weather Service says a 20% precipitation chance lingers through the daytime hours, with the best early window for showers before 10 AM CT. Daytime heating will likely fire up isolated storms again in the afternoon. Storms that do develop could be slow-moving, producing locally heavy rainfall, gusty winds, and lightning. Most of San Antonio will stay dry today, but toss a compact travel umbrella in your bag if you’re headed to the River Walk or the Pearl District.
Best Window To Be Outside
Aim for late morning — roughly 10 AM to 1 PM CT — for errands, a walk along the San Antonio River Walk, or time at Brackenridge Park. Afternoon storm odds creep up as temperatures peak, so outdoor plans are best finished before 3 PM.
Flash Flood Risk — Take It Seriously
This is the part worth paying attention to: NWS forecasters in Austin/San Antonio are flagging locally heavy rainfall possible late Thursday night into early Friday morning across the Rio Grande plains and southern Edwards Plateau. Precipitable water values near 2 inches will be in place — a lot of moisture for slow-moving storms. San Antonio sits firmly in Flash Flood Alley, and the River Walk can rise fast. Avoid low-water crossings after dark and stay alert to any flood warnings.
NBA Finals Game 2 — Spurs vs. Knicks, Friday June 5
The Alamo City is buzzing for NBA Finals Game 2 as the San Antonio Spurs host the New York Knicks on Friday, June 5 at Frost Bank Center. The arena is indoors, so no worries once you’re inside — but getting there is the challenge. Friday’s forecast carries a 50% chance of showers and thunderstorms, so leave early and bring a packable rain jacket. Represent in a San Antonio Spurs jersey or stay warm in a San Antonio Spurs hoodie when the AC hits full blast. Still need seats? Get tickets on SeatGeek or Find tickets on StubHub.
What To Wear and Bring
- Light breathable layers for the 87°F afternoon heat
- A packable rain jacket for any outdoor time after 2 PM
- waterproof hiking boots if you’re planning a Hill Country trail run this weekend
- compact travel umbrella for downtown and game-day parking lot walks
Rainy Day Dinner Idea
With storms rolling in tonight and Friday, it’s a perfect excuse for slow-cooker chili or a hearty beef stew. Load up your programmable slow cooker in the morning and let it do the work. Or go old-school with an enameled cast iron Dutch oven for a big pot of soup. Need ingredients? You can order groceries on Amazon and have everything for tonight’s dinner delivered to your door.
Next Few Days
Friday is the wettest day of the stretch — 50% daytime storms, then a jump to 75% Friday night as an upper low and surge of moisture push east from Mexico. Saturday maintains rain chances before the pattern shifts more toward the Hill Country and east of I-35 on Sunday. Early next week turns drier and warmer. Keep an eye on the San Antonio weather forecast and check outdoor gear deals before your next adventure.
