Texas – Warm air brushes past early risers as porch lights click off and dry pavement hints at an unusually gentle start to January. It feels calm now, but temperatures are already on the move as the first full week of 2026 builds across South Texas.
According to the National Weather Service in Austin/San Antonio, sunshine dominates today with highs climbing into the low 70s. Light northeast winds shift southeast by afternoon, helping pull in even warmer air. Patchy fog develops later tonight and lingers into Monday morning, especially in low spots and along rural roads.
Across San Antonio, today stays bright and comfortable, ideal for outdoor errands. Drivers should stay alert early Monday, when fog may reduce visibility along I-10, I-35, and Loop 410. Use low beams and allow extra following distance where haze thickens.
The warm-up accelerates Monday afternoon. Highs push into the mid-70s, then surge further Tuesday. By Tuesday afternoon, temperatures approach the low 80s, a sharp contrast to winter norms. Nights stay mild, with lows holding in the low 60s, limiting any freeze risk.
Wednesday remains warm and partly sunny, again topping out near 82. To be fair, winter is still on the calendar, but this pattern feels more like early spring. Residents should stay hydrated and dress in layers, as mornings stay cool while afternoons turn warm fast.
Late week brings a subtle shift. Clouds increase Wednesday night, and breezy conditions develop Thursday. No significant rain or winter weather is expected locally, though changing winds may make it feel cooler by evening.
Looking ahead, meteorologists continue watching stronger winter systems later this month across the Midwest and Great Lakes, while Texas remains warmer than average. Daylight steadily improves too. By late January, San Antonio gains close to 40 extra minutes of sunlight.
Feeling the warmth already? Tell us how this January compares to past winters for you.
Five-Day Outlook for San Antonio, Texas
- Today: Sunny, high near 72°F
- Monday: Patchy fog early, mostly sunny, high near 75°F
- Tuesday: Mostly sunny, high near 82°F
- Wednesday: Partly sunny, high near 82°F
- Thursday: Mostly sunny, high near 78°F
