San Antonio Weekend Weather Forecast: January 2026

Okay, picture this: it’s January 2026, and I’m standing on my porch in San Antonio, clutching a lukewarm cup of coffee that I swear I just poured. The sun is peeking out, a timid little thing, and I’m wearing a light sweater. A light sweater, mind you, because, well, it’s San Antonio in January, right? I’m already mentally picturing the Riverwalk strolls, maybe even an outdoor brunch without turning into a popsicle. Then, my neighbor, bless his over-prepared heart, ambles out, already bundled in a parka and muttering about “polar vortexes” and “unprecedented cold snaps.” My coffee suddenly feels a whole lot colder.
And that, my friends, is the perpetual mystery and mild anxiety of a San Antonio winter forecast. We’re a city that loves its sunshine, and when winter rolls around, we’re all just kind of… hoping for the best. We’ve got a reputation for being a bit chilly, but then BAM! Spring decides to show up in December. So, as we cast our hopeful eyes towards January 2026, let’s dive into what the crystal ball (or, you know, meteorological data) is telling us about those precious weekend days. Because, let’s be honest, planning anything outdoors hinges on this information! We’re not talking about predicting lottery numbers here, but a good guess is pretty darn close to winning the weekend lottery when you live in a place like this.
San Antonio Weekend Weather: January 2026 - A Peek into the Crystal Ball
So, you’re probably wondering, just like I am, what’s the vibe going to be like for those coveted January 2026 weekends in San Antonio? Will we be basking in glorious, crisp sunshine, perfect for exploring The Alamo without breaking a sweat? Or will we be huddled indoors, contemplating the existential dread of a surprisingly frigid morning? It’s the eternal question for us Texans, isn't it? We like our weather to be predictable, but that’s often a foreign concept when it comes to a San Antonio winter.
First off, let’s acknowledge the elephant in the room: January in San Antonio is a bit of a wild card. We rarely get the deep, bone-chilling freezes that our northern neighbors endure. But we also don't typically escape entirely unscathed. The key is understanding the range of possibilities. Think of it like a really good Tex-Mex buffet – there’s always a little bit of everything, and you’re not quite sure what you’ll end up piling on your plate until you get there.
Weekend 1: January 3rd - 4th, 2026 - A Gentle Welcome?
Looking at the early days of January 2026, the initial projections are… well, they’re not screaming “arctic blast.” We’re likely looking at temperatures that are going to feel pleasantly mild. Expect highs to hover somewhere in the high 60s to low 70s. Seriously, if you’re thinking about an outdoor activity, this weekend might be your golden ticket.
Mornings, though? Those will still have a bit of a bite. Think crisp, perhaps in the low to mid-40s. So, that light sweater I mentioned earlier? Yeah, that’s probably going to be your best friend for that early morning coffee run. Or, if you’re like me and prone to forgetting to check the actual temperature, you might find yourself regretting those shorts a little bit as you step out the door. Been there, done that, bought the extra pair of socks.
The sunshine is predicted to be pretty generous. We’re talking clear skies, maybe a few wispy clouds that just add to the picturesque San Antonio scenery. This is the kind of weather that makes you want to wander through the historic missions, take a leisurely stroll along the Riverwalk, or even pack a picnic and head to Brackenridge Park. Just remember sunscreen, even in January! I know, I know, it sounds crazy, but trust me on this one. That Texas sun has a sneaky way of sneaking up on you.

Probability-wise, this looks like a fairly stable pattern. No major fronts expected to slam-dunk the region. It’s the kind of weekend that makes you breathe a sigh of relief and think, “Okay, this is the January I was hoping for.” It’s the perfect introduction to the new year, a gentle nudge rather than a forceful shove into whatever the rest of the month has in store.
Weekend 2: January 10th - 11th, 2026 - A Subtle Shift?
Now, as we move into the second weekend of January 2026, things might start to get a tad more interesting. We’re still not talking about a full-blown winter storm, but there’s a possibility of a slight dip in temperatures. Think highs nudging down into the mid-60s. Still perfectly pleasant for most outdoor activities, but you might want to layer up a little more than the previous weekend.
The mornings could also be a bit cooler, potentially dipping into the upper 30s to low 40s. This is where that second layer becomes your best friend. Maybe a fleece or a slightly heavier jacket. And, for those of you who are particularly sensitive to the cold (like my aforementioned neighbor), you might even be contemplating those stylish winter hats. Don’t worry, you’re not alone. San Antonio winters are a fashion show of denial for some of us.
The sunshine might be a little more intermittent this weekend. We could see a mix of sun and clouds. It’s the kind of weather where you might get a glorious burst of sunshine followed by a brief, cooler period. This isn’t the kind of thing that will ruin your plans, but it’s good to be aware of. It’s like that one friend who’s always a little unpredictable – you love them, but you know to expect the unexpected.

There’s a chance of a weak cold front making its way through. This is what would cause that slight temperature drop and potentially introduce those patchy clouds. Nothing dramatic, mind you, but enough to make you think twice about that sleeveless top. It’s the subtle nudge that reminds you that it is still winter, even if it doesn’t always feel like it.
Weekend 3: January 17th - 18th, 2026 - The Coolest Contender?
Okay, buckle up, buttercups, because this third weekend of January 2026 is where we might see the coolest temperatures of the month. The forecast is hinting at highs struggling to get out of the low 60s, perhaps even dipping into the high 50s on one of the days. This is where my neighbor might start to look smug and I might start to question my life choices for not investing in a truly robust winter coat.
Mornings are almost certainly going to be chilly. We could be looking at temperatures in the low to mid-30s. Yes, you read that right. This is the weekend where you might need to seriously consider that scarf and gloves combo. The kind of cold that makes you appreciate the warmth of a good breakfast taco and a steaming mug of coffee. Priorities, people!
The sunshine might be playing hide-and-seek a bit more aggressively this weekend. There’s a higher probability of cloud cover, and while it’s unlikely to be a full-on washout, you might not get those extended periods of brilliant sunshine. This is the weekend to embrace the cozy. Think art museums, browsing those cute little boutiques on the King William Historic District, or enjoying a hearty meal at a local restaurant. If you do plan an outdoor activity, make sure you dress in layers – and I mean proper layers.

This is the weekend where a more significant cold front is more likely to make its presence felt. It’s the kind of front that reminds us that we are, in fact, still in Texas and winter can indeed be… well, winter-y. It’s not a guarantee of ice and snow (let’s be realistic here, that’s a rare bird in San Antonio), but it’s enough to bring out the warmer attire and maybe even prompt a few people to cancel their outdoor plans in favor of indoor pursuits. Your mileage may vary, as they say!
Weekend 4: January 24th - 25th, 2026 - A Return to Normalcy (Whatever That Is)?
As we wrap up January 2026, the fourth weekend’s forecast is starting to look like a bit of a return to what we consider “normal” for a San Antonio winter. The projections are suggesting a warming trend, with highs climbing back into the upper 60s and low 70s. Ah, sweet relief! My neighbor might be starting to sweat a little under that parka.
Mornings will likely still be cool, but probably not as biting as the previous weekend. Expect them to be in the mid-40s to low 50s. That light sweater will likely be making a comeback, and you might even be able to ditch the heavier jacket for a stroll. It’s a welcome return to that pleasant, crisp air that’s perfect for enjoying the city’s charms.
The sunshine is predicted to be pretty consistent once again. Clear skies and comfortable temperatures are on the menu. This is your chance to revisit any outdoor activities you might have missed or simply enjoy the beauty of San Antonio under a clear, blue sky. It’s like the month is saying, “Okay, I’ve had my little chilly moment, now let’s get back to being pleasant.”

This weekend is likely to be influenced by a ridge of high pressure building back into the region, which typically brings us those lovely clear and mild conditions. It’s a stable pattern, and honestly, after the potential chill of the third weekend, it’s the kind of forecast that makes everyone in San Antonio breathe a collective sigh of relief. Time to dust off those walking shoes!
A Few San Antonio Winter Weather Tips, Just in Case!
So, there you have it, a sneak peek into what January 2026 might hold for our San Antonio weekends. Remember, this is just a forecast, and as any seasoned San Antonian knows, things can change on a dime. The best approach is always to be prepared for a little bit of everything. Layers are your best friend. Seriously, invest in a few versatile pieces that you can easily add or remove.
Don’t forget about those unexpected sunny days. Even when it’s cooler, the Texas sun can pack a punch. So, even if you’re just heading out for a short walk, a little sunscreen is always a good idea. And speaking of essentials, always have a reliable umbrella and a light jacket handy. You never know when a brief shower might pop up, or when that slight breeze might turn into something a little more insistent.
Most importantly, stay flexible. If the weather decides to throw you a curveball, don’t let it ruin your weekend. San Antonio has so much to offer, both indoors and outdoors. If it’s too chilly for a Riverwalk cruise, perhaps it’s the perfect time to explore the San Antonio Museum of Art or catch a show at The Majestic Theatre. The city is always ready to entertain, rain or shine (or, you know, mild chill).
I’ll be out there, coffee in hand, checking the latest updates, and probably still getting caught out by the morning chill every now and then. It’s all part of the San Antonio charm, isn’t it? Embrace the unpredictability, plan loosely, and get ready for whatever January 2026 decides to bring. Here’s to a fantastic and hopefully, mostly sunny, start to the new year!
