San Antonio, TX Weather – December Warmup Hits Upper 70s Before Weekend Shift in Winds

Expect highs in the upper 70s with cooler mornings and patchy clouds returning late Sunday

0
weather alert windy high winds
-Advertisement-

TEXAS – The crisp, golden sunrise across south-central Texas this morning sets the tone for another stretch of pleasant December weather. After a string of chilly mornings, San Antonio will climb into the upper 60s and mid-70s by late week — a comfortable warmup ahead of a mild weekend cooldown.

According to the National Weather Service in Austin/San Antonio, Thursday and Friday will stay sunny and calm, with light north winds turning south through the day. Highs reach near 69°F Thursday and around 76°F Friday, with clear skies and light evening breezes ideal for outdoor errands or early holiday decorating.

The weather pattern shifts slightly by Saturday afternoon, when north-northeast winds usher in cooler, drier air. Highs dip back into the mid-70s Saturday and lower 60s Sunday, while lows fall into the 40s — still mild, but noticeably cooler at dawn.

For now, rain chances remain near zero, giving travelers and weekend planners a dry, easy window before a stronger front early next week may bring cloud cover and a few light showers to central Texas.

5-Day Outlook (Dec. 11–15):

  • Friday: Mostly sunny, high 76°F, low 59°F.
  • Saturday: Partly sunny, high 75°F, low 56°F.
  • Sunday: Sunny, high 63°F, low 45°F.
  • Monday: Mostly cloudy, high 61°F.
  • Tuesday: Mostly sunny, high 68°F.