San Antonio, TX – The air starts cool and calm across the Alamo City this morning, with temperatures in the upper 40s and skies perfectly clear — the kind of early December day that feels more like October. Sunshine is set to rule the skies this week, with afternoon highs climbing into the mid- to upper 70s by Thursday before mild nights settle back into the 40s and 50s.
According to the National Weather Service in Austin/San Antonio, Monday brings light north winds shifting east by afternoon, keeping highs near 64°F under full sun. By Tuesday and Wednesday, high pressure will anchor across Central Texas, allowing a steady warm-up — highs near 67°F Tuesday and around 78°F by midweek. Southwest breezes remain gentle, and humidity stays comfortable, making this stretch one of the region’s most pleasant early-December spells.
Travelers and commuters will find ideal driving weather across I-35 and Loop 410, with no precipitation expected and excellent visibility through at least Friday. Mornings will feel crisp, but by afternoon, short sleeves may return.
By the weekend, clouds could thicken slightly as Gulf moisture starts to edge north, but temperatures remain well above average — mid-80s possible by Sunday.
Meteorologists note this warm spell could break briefly next week as colder air from the Plains slides south — a reminder that winter isn’t far behind, even in Texas.
