Honestly, if you've ever spent a full week in Rowlett, you know the "Texas heat" stereotype is only half the story. People talk about the temperature in Rowlett TX like it’s a monolith of sweltering August afternoons, but the reality is much more chaotic. It’s the kind of place where you might start your morning scraping frost off a windshield and end it looking for a shaded patio and a cold drink.
Take today, Friday, January 16, 2026. Right now, it’s a crisp 44°F outside. Clear skies. It feels more like 39°F thanks to a northwest wind blowing at 9 mph. If you just moved here from up north, you're probably wearing a light hoodie. If you've been here a while, you’re likely digging out the heavy coat.
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Rowlett isn't just "hot." It’s a transition zone where the Great Plains meet the humid subtropical influences of the Gulf.
The Reality of Rowlett Seasons
Most folks think July and August are the only months that matter, but the "cool season" in Rowlett actually puts up a fight for about three months every year. Between late November and late February, the average daily high sits below 64°F.
January is technically the coldest month. We're seeing that right now. Today’s high hit 58°F, but tonight it’s dropping down to 36°F. Tomorrow, Saturday, January 17, is going to be even more of a reality check with a high of only 46°F and a low of 27°F.
That's a 31-degree swing in 24 hours. Basically, your wardrobe needs to be as flexible as your weekend plans.
Why the Lake Matters
Rowlett is uniquely positioned along the shores of Lake Ray Hubbard. Local experts and long-time residents will tell you that proximity to the water does weird things to the microclimate. In the summer, the humidity off the lake can make a 95°F day feel like a steam room.
In the winter? That moisture can turn a simple cold front into a "wintry mix" that shuts down the PGBT (President George Bush Turnpike) in record time. While Rowlett averages only about an inch of snow a year, the ice is what usually gets you.
Breaking Down the Yearly Averages
If you're planning a move or just trying to figure out when to host an outdoor wedding at Pecan Grove Park, you have to look at the "comfort windows."
- Spring (March–May): This is the sweet spot. Highs climb from 68°F in March to a lush 82°F in May. However, May is also the wettest month, averaging nearly 5 inches of rain.
- Summer (June–August): It’s a marathon. August is the peak, with average highs of 95°F and lows that rarely dip below 74°F.
- Fall (September–November): September starts hot at 88°F but drops fast. By October, you’re at a perfect 78°F.
The record books show how extreme things can get. The all-time high for the region (monitored at nearby DFW) is a blistering 113°F, while the record low is a bone-chilling -8°F. We aren't hitting those numbers this week, but they serve as a reminder that North Texas weather doesn't do "moderate" very well.
Humidity: The Silent Factor
It’s rarely just about the dry temperature in Rowlett TX. Humidity is the real boss here. In January, the relative humidity averages around 43% during the day, which keeps the air feeling "sharp" but dry.
Compare that to June or July. When the humidity spikes to 60% or higher, the "Feels Like" temperature (the heat index) can easily jump 10 degrees above the actual thermometer reading.
Looking Ahead: The Next 10 Days
If you're looking at the upcoming week, we’re in for a bit of a rollercoaster. After that 27°F dip tomorrow night, Sunday will bounce back to 58°F under sunny skies.
By Wednesday, January 21, the temperature in Rowlett TX is expected to hit 60°F, but it comes with a catch: light rain and a spike in humidity to 77%. Then, the following Sunday, January 25, brings a 75% chance of rain with a high of 53°F.
Practical Tips for Handling Rowlett Weather
Don't trust a single layer. Seriously.
If you are heading out to the Rowlett Community Centre or taking the dog to Scentral Bark, check the wind direction. A north wind in January, like the 17 mph gusts we had earlier today, changes everything.
Actionable Next Steps:
- Winterize your pipes: With lows hitting 27°F tomorrow and Sunday, make sure your outdoor faucets are covered.
- Plan outdoor events for October or April: These months offer the highest "comfortable weather" ratings with a mean temperature around 68°F.
- Watch the dew point: In the summer, if the dew point is over 65°F, limit your heavy outdoor exercise to before 8:00 AM.
- Check your tires: Drastic temperature swings like the 30-degree drop we’re seeing this weekend will cause your tire pressure light to pop on.