Texas begins the first Monday of 2026 wrapped in low clouds and pockets of dense fog across the San Antonio metro. Visibility drops sharply on some roadways early, and damp pavement reflects headlights as families return to school and work routines.
According to the National Weather Service, patchy dense fog lingers through mid-morning, especially south and east of downtown and along corridors like I-10, I-35, and Loop 410. Conditions gradually improve late morning as clouds thin and sunshine breaks through. Highs climb into the mid-70s today, well above seasonal norms.
Tonight stays mild, with fog redeveloping late and temperatures holding near the low 60s. Tuesday brings another warm jump. Afternoon highs push into the lower 80s after fog clears, making it feel more like late spring than winter across South Texas.
By Wednesday, the warm pattern holds. Sunshine dominates, and highs remain in the low 80s. South winds increase slightly, adding a humid edge to the air. To be fair, winter feels far away right now, but January patterns can shift quickly.
Thursday stays warm, near 80 degrees, with partly sunny skies and breezier conditions. Gusts near 20 mph may affect high-profile vehicles on elevated roadways. No rain or winter impacts are expected this week, but broader national patterns remain active.
Looking ahead toward the weekend, temperatures ease slightly, though conditions remain mild. Daylight continues to increase, adding noticeable evening light by the end of January as winter slowly loosens its grip.
Driving through fog this morning or noticing reduced visibility? Share what conditions look like where you are.
Five-Day Weather Outlook for San Antonio, Texas
Monday: Patchy dense fog early, then mostly sunny. High near 76.
Tuesday: Fog early, turning sunny and warm. High near 83.
Wednesday: Mostly sunny and mild. High near 82.
Thursday: Partly sunny and breezy. High near 80.
Friday: Mostly sunny, slightly cooler. High near 75.
