Weather
South Texas Weather Alert: 40° Temperature Swing Oct 15-18
San Antonio, TX – A major change in temperatures will sweep through the San Antonio area heading into the weekend, replacing Thursday's 92 degree warmth with gusty north winds, cooler afternoons and n
By Grant Holloway · 2026-10-15T08:13:42.086Z
San Antonio, TX – A major change in temperatures will sweep through the San Antonio area heading into the weekend, replacing Thursday's 92 degree warmth with gusty north winds, cooler afternoons and nighttime temperatures near 50 degrees. The National Weather Service expects temperatures to fall substantially between Thursday and early Sunday, creating a 42 degree difference between the warmest afternoon and coolest nighttime readings. Wind gusts reaching 40 mph Friday could make the transition especially noticeable for residents traveling or spending time outdoors.
According to the National Weather Service Austin/San Antonio office, Thursday will remain mostly sunny and unusually warm for mid October, with afternoon highs near 92 degrees. Southeast winds of 5 to 10 mph will accompany the warmth before a change in weather patterns brings cooler air into South Central Texas. A 40% chance of showers develops after 4 a.m. Friday, with temperatures falling toward 66 degrees by daybreak.
Strong Winds Accompany Friday's Temperature Drop Friday brings the most noticeable transition as temperatures struggle to reach 72 degrees, approximately 20 degrees below Thursday's projected high. North winds of 20 to 25 mph could produce gusts as high as 40 mph, creating breezy conditions across San Antonio and surrounding portions of Bexar County. The National Weather Service also forecasts a 30% chance of showers before 7 a.m., followed by partly sunny skies.
The stronger winds could be particularly noticeable along exposed roadways, elevated highway ramps and open areas throughout the metropolitan region. Drivers using Interstate 10, Interstate 35, Interstate 37 and Loop 1604 may encounter gusty crosswinds, especially during Friday's peak wind periods. High profile vehicles could be more sensitive to those conditions, although the supplied forecast does not indicate specific highway closures or confirmed travel disruptions.
Weekend Brings Cooler Mornings and Sunshine By Friday night, skies become partly cloudy as temperatures drop toward 52 degrees. North winds of 15 to 20 mph could continue producing gusts up to 40 mph, extending the breezy conditions into the evening. Residents attending outdoor events or traveling after sunset should prepare for temperatures considerably cooler than those experienced Thursday afternoon.
Saturday offers improving conditions with sunny skies and afternoon highs near 70 degrees. North northeast winds of 10 to 15 mph could still gust as high as 30 mph, keeping conditions somewhat breezy despite the sunshine. Temperatures fall again Saturday night, reaching approximately 50 degrees under mostly clear skies. That reading marks the coolest point in the supplied weekend outlook for the San Antonio forecast location.
Temperatures Recover Early Next Week Sunday brings sunny skies and a modest recovery, with afternoon highs near 73 degrees. North northeast winds of 5 to 10 mph gradually become easterly during the afternoon, providing a calmer finish to the weekend. Sunday night temperatures settle around 55 degrees under partly cloudy skies.
The warming trend continues Monday, with highs near 78 degrees, followed by approximately 83 degrees Tuesday and 87 degrees Wednesday. Mostly sunny conditions are expected through the middle of next week, suggesting that the weekend cooldown will be relatively brief.
The forecast does not indicate freezing temperatures or winter weather, but the combination of gusty winds and falling temperatures will create a noticeable shift from Thursday's warmth.
Will the cooler weekend temperatures change your outdoor plans, or are you looking forward to a break from the 90 degree heat?
Five Day Weather Outlook Thursday 10/15: Mostly sunny skies and warm temperatures bring afternoon highs near 92 degrees, with southeast winds of 5 to 10 mph. Clouds increase overnight, with a 40% chance of showers developing after 4 a.m. and lows around 66 degrees.
Friday 10/16: A noticeable cooldown arrives with highs near 72 degrees and north winds gusting up to 40 mph. Showers are possible before 7 a.m., with a 30% precipitation chance, followed by partly sunny skies and nighttime lows near 52 degrees.
Saturday 10/17: Sunny skies return with afternoon highs near 70 degrees, although north northeast winds could gust as high as 30 mph. Mostly clear conditions Saturday night allow temperatures to fall toward 50 degrees.
Sunday 10/18: Sunshine continues across San Antonio, with highs near 73 degrees and north northeast winds gradually becoming easterly during the afternoon. Partly cloudy skies develop Sunday night, with lows around 55 degrees.
Monday 10/19: Mostly sunny conditions and warmer temperatures bring afternoon highs near 78 degrees. Partly cloudy skies are expected Monday night, with temperatures falling to approximately 60 degrees as the warming trend continues.
Extended Outlook: October 20 21 Tuesday is expected to bring mostly sunny skies and afternoon highs near 83 degrees, followed by partly cloudy conditions and nighttime lows around 65 degrees.
Wednesday continues the warming trend, with mostly sunny skies and highs approaching 87 degrees.