Weather
San Antonio, TX Weather Oct. 16–20: Windy Friday, Cool Weekend
SAN ANTONIO, TX — A sharp October cooldown will bring gusty north winds and temperatures in the 50s to San Antonio beginning Friday, Oct. 16, ending a stretch of unusually hot weather before sunshine
By Caleb Mercer · 2026-10-14T09:38:27.786Z
SAN ANTONIO, TX — A sharp October cooldown will bring gusty north winds and temperatures in the 50s to San Antonio beginning Friday, Oct. 16, ending a stretch of unusually hot weather before sunshine and warmer afternoons return early next week.
According to the National Weather Service Austin/San Antonio office, temperatures will fall from a projected high of 90 degrees Thursday to just 77 degrees Friday, with north winds gusting as high as 35 mph.
The change follows Wednesday's expected high of 93 degrees, when heat index values could reach 102 degrees.
By Saturday, afternoon temperatures are expected to reach only 72 degrees, marking a 21 degree decline from Wednesday's projected high.
Strong Winds Bring Cooler Air Friday The most noticeable change arrives Friday as north winds increase to 20 to 25 mph, with gusts potentially reaching 35 mph.
Friday night could remain windy, with north winds of 15 to 20 mph and gusts reaching 40 mph.
Temperatures are expected to fall to approximately 56 degrees overnight, providing a substantial break from the warm nights earlier in the week.
NOAA's Weather Prediction Center has identified a broader pattern change across the central United States as strong high pressure moves south from Canada.
The national outlook indicates some locations could experience temperature drops of 20 to 25 degrees behind the advancing cold front.
For San Antonio, the local forecast supports a pronounced cooldown, although temperatures are expected to remain well above freezing.
Sunny Weekend Before Temperatures Rebound Saturday brings mostly sunny skies and a high near 72 degrees, with north northeast winds of 10 to 20 mph and gusts reaching 30 mph.
Saturday night temperatures should again fall to around 56 degrees under mostly clear skies.
Sunday begins a gradual warming trend, with afternoon temperatures climbing to approximately 77 degrees.
By Monday, San Antonio is expected to reach 83 degrees under partly sunny skies.
The warming continues Tuesday, when highs could reach 86 degrees, representing a 14 degree increase from Saturday's projected high.
A slight chance of showers and thunderstorms returns Tuesday, although the National Weather Service currently places precipitation chances at just 20%.
The five day outlook points toward a brief but noticeable taste of fall before warmer October weather returns.
Five Day Weather Outlook: Oct. 16–20 Temperatures below represent the National Weather Service forecast for San Antonio, Texas, approximately 2 miles south southeast of downtown. Conditions may vary elsewhere across South Central Texas.
Friday, Oct. 16: Mostly sunny and breezy, with a high near 77°F. North winds 20–25 mph, gusting up to 35 mph. Partly cloudy overnight, with a low around 56°F and gusts up to 40 mph. Saturday, Oct. 17: Mostly sunny and cooler, with a high near 72°F. North northeast winds 10–20 mph, gusting up to 30 mph. Mostly clear overnight, with a low around 56°F. Sunday, Oct. 18: Mostly sunny and warmer, with a high near 77°F. Partly cloudy overnight, with a low around 61°F. Monday, Oct. 19: Partly sunny, with a high near 83°F. Mostly cloudy overnight, with a low around 67°F. Tuesday, Oct. 20: Partly sunny and warmer, with a high near 86°F. A 20% chance of showers and thunderstorms.