San Antonio, TX Weather: Fall Heat Wave Tops Mid-80s by Midweek

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SAN ANTONIO, Texas – Golden sunlight and calm air greet South Texas this morning as temperatures climb quickly after dawn. What begins cool and crisp near 50°F will feel more like late September by midweek, with highs pushing well into the 80s under full, steady sun.

According to the National Weather Service in Austin–San Antonio, a warming trend will dominate through at least Thursday as south winds strengthen slightly each afternoon. Tuesday’s high near 80°F will rise further by Wednesday, peaking near 84°F in the city and mid-80s along I-10 toward Seguin and Kerrville. Skies remain clear, humidity modest, and rain chances virtually zero — perfect for early travel, Veterans Day parade preparations, or leaf cleanup before the next front later in the month.

While no severe weather threats are expected this week, fire danger may tick upward in drier rangeland areas west of Bexar County. The NWS advises residents to avoid open burning and to secure loose outdoor decorations as breezes increase slightly late Wednesday. Early holiday travelers will find excellent driving conditions across South-Central Texas through Friday, though late-week warmth could fade by the weekend as a cooler pattern approaches from the north.

The mild stretch also offers a good window to check heating systems, clean gutters, and ready homes for the region’s first real cold push — likely closer to mid-November as national models hint at a widespread cooldown and possible frost farther north.


Five-Day Forecast for San Antonio, TX:
Mon: 79/54 – Sunny; calm winds, crisp morning.
Tue: 80/58 – Sunny; light south breeze.
Wed: 84/60 – Mostly sunny; warm, breezy afternoon.
Thu: 85/62 – Sunny; dry, unseasonably warm.
Fri: 88/62 – Clear and hot for November; cooler air nearing late.