Cold Morning Bites as Winter Sun Takes the Stage Across San Antonio

Bracing for a Frigid Start

San Antonio residents are waking up to some of the coldest air of the season this Saturday, January 31, 2026. As of early this morning, temperatures have hovered near the freezing mark, but the wind chill is the real story for early risers. A Cold Weather Advisory remains in effect until 10:00 AM today, specifically targeting areas along and north of the I-10 and U.S. Highway 90 corridor. Local forecasters report that while actual lows are bottoming out between 20 and 30 degrees, gusty winds are making it feel significantly harsher, with wind chill values plummeting into the 13 to 20-degree range.

Afternoon Thaw Under Clear Skies

Despite the biting cold at daybreak, the San Antonio skyline will remain remarkably clear. As the morning advisory expires, the sun will take center stage, providing much-needed relief from the arctic air. We are expecting a high of approximately 49°F by mid-afternoon. While the sunshine will be bright, the air will remain crisp with humidity levels dropping to around 41%. Unlike the turbulent winter weather seen earlier this month, there is a 0% chance of precipitation today, meaning umbrellas can stay tucked away in favor of heavy coats and layers.

The 4Ps: Staying Safe in the Cold

With a hard freeze expected again tonight, officials from the National Weather Service are urging the community to continue practicing the '4Ps' of winter safety:

• People: Check on elderly neighbors and minimize time outdoors during the morning's peak cold.
• Pets: Bring all outdoor animals inside and ensure their water sources have not frozen over.
• Plants: Cover cold-sensitive vegetation or move potted plants into a garage or shed.
• Pipes: Ensure outdoor faucets are insulated and cabinets are open to allow warm air to reach indoor plumbing.

Evening Outlook and Sunday Preview

As the sun sets this evening, San Antonio will experience a rapid temperature drop. Clear skies will allow for efficient cooling, sending the mercury back down to a low of 28°F overnight. Winds are expected to calm slightly, but the freeze will be sustained through the early hours of Sunday morning. Looking ahead, a gradual warming trend is expected to begin tomorrow, but for today, the Alamo City remains firmly in winter's grip. Stay warm, stay safe, and enjoy the winter sunshine while it lasts.