Waking up in the Texas Hill Country usually means one of two things: it’s either going to be a perfect day for a patio lunch or you’re about to experience three different seasons before dinner. Honestly, that’s just how it goes here. If you’ve lived here long enough, you know the drill, but if you’re just passing through or new to the area, the weather forecast Boerne TX can feel like a riddle wrapped in a mystery.
Right now, as of Saturday, January 17, 2026, we are staring down some seriously crisp conditions. It’s sunny, sure, but don’t let that Texas sun fool you into thinking it’s t-shirt weather.
The Reality of January in the Hill Country
Most people think "Texas" and think "desert heat." Boerne isn’t the desert. We’re sitting on the edge of the Edwards Plateau, and that elevation matters. Today, the high is hitting exactly 52°F. That sounds manageable, right? But with a northeast wind kicking at 13 mph, it actually feels more like 47°F.
That’s the "feels like" factor that catches people off guard. You step out onto Main Street thinking you're fine, and then that gust hits you as you're walking toward the Cibolo Creek.
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Why the Humidity Matters (Even When It's Low)
We are currently sitting at a bone-dry 14% humidity. In the summer, humidity is the enemy because it makes 95 degrees feel like 105. In the winter, this low humidity combined with the wind is what dries out your skin and makes the air feel "sharper." It’s a different kind of cold than what you get in Houston or even San Antonio.
It’s also why we have a Red Flag Warning in effect today. When the air gets this dry and the wind picks up, the fire danger goes through the roof. It’s basically a tinderbox out there. If you were planning on burning some cedar brush in the backyard today, just... don’t. It’s not worth the risk of a runaway fire.
Tonight’s Deep Freeze
If you think the daytime is chilly, just wait until the sun goes down. The weather forecast Boerne TX for tonight is calling for a low of 26°F. That is a hard freeze.
- The Plants: If you haven’t moved your potted succulents or those "almost-hardy" hibiscus inside, do it now.
- The Pipes: It’s that time of year where we start talking about dripping faucets. Most modern homes in Boerne are built for this, but those historic limestone beauties near the town square might need a little extra love.
- The Pets: 26 degrees is no joke for an outside dog. Bring them in.
The sky will be completely clear, which is why the temperature drops so fast. Without cloud cover to trap the day's heat, it all just radiates back into space. It’ll be beautiful for stargazing, but you’ll want a heavy coat and maybe a thermos of something hot.
What Most People Get Wrong About Boerne Weather
A lot of folks look at a San Antonio forecast and assume Boerne will be the same. That is a mistake. Because of our elevation—roughly 1,400 feet—we are consistently 3 to 5 degrees cooler than San Antonio. When San Antonio gets a cold rain, Boerne is the place that might actually see a stray snowflake or some sleet.
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We also deal with "Mountain Cedar" season (technically Ashe Juniper). Today’s pollen levels are high. Between the dry air and the cedar pollen blowing in on those 13 mph winds, "Boerne crud" is a real thing. If your eyes are itchy and you’re sneezing, it’s likely the weather working against you.
Looking Ahead to Tomorrow
Sunday, January 18, looks a bit more forgiving. We’re expecting a high of 58°F with the winds shifting to the west-southwest. It’s a slow climb back to "mild," but we’re still looking at a cold start in the morning.
Basically, the "Boerne Uniform" for the next 48 hours is layers. You need a base layer for the 26-degree morning, a light jacket for the 52-degree afternoon, and a heavy parka the second the sun dips behind the hills.
Next Steps for Boerne Residents:
Check your outdoor faucets and ensure they are covered before 8:00 PM tonight. Given the 14% humidity and northeast winds, keep an eye on any outdoor heat sources and strictly adhere to the burn ban during the Red Flag Warning period. If you’re heading out to the Hill Country Mile for some shopping, dress for the 47°F wind chill rather than the 52-degree high.