San Antonio, January 3, 2026
In 2025, San Antonio faced severe weather challenges, recording its second-hottest year with an average temperature of 72.6°F. The city witnessed unprecedented heatwaves, including 162 days above 90°F, and significant flash flooding in June resulting in 13 fatalities. Responding to extreme heat conditions, the city implemented public safety measures to protect residents. As climate patterns shift, San Antonio continues to adapt to these growing challenges.
San Antonio’s 2025 Weather: A Record-Breaking Year
San Antonio, Texas – In 2025, San Antonio experienced its second-hottest year on record, with an average annual temperature of 72.6°F, just below the 2024 record of 73.3°F.
Consistent Warmth Throughout the Year
Throughout 2025, San Antonio maintained consistently warm temperatures, with 10 of the 12 months recording above-average temperatures. Notably, the city experienced 162 days with highs of at least 90°F, setting a new record for the most 90°F days in a year.
Record-Breaking Heatwaves
The year was marked by significant heatwaves, with temperatures reaching up to 105°F in parts of Texas, including San Antonio. These extreme conditions led to heat advisories and increased health risks for residents.
June Flash Flooding
In June 2025, San Antonio faced severe flash flooding, resulting in 13 fatalities. The area received over 7 inches of rain in three hours, qualifying as a 100-year event and marking the city’s highest daily rainfall in over a decade.
City’s Response to Extreme Heat
In response to the extreme heat, the City of San Antonio urged residents to prepare by staying in air-conditioned spaces, wearing lightweight clothing, and staying hydrated. The city also provided resources such as cooling centers and outreach programs for vulnerable populations.
Looking Ahead
As San Antonio continues to experience warmer temperatures, residents are encouraged to stay informed about weather conditions and take necessary precautions during extreme heat events.
Frequently Asked Questions
What was San Antonio’s average annual temperature in 2025?
San Antonio’s average annual temperature in 2025 was 72.6°F, making it the second-hottest year on record.
How many days did San Antonio experience temperatures of at least 90°F in 2025?
San Antonio experienced 162 days with highs of at least 90°F in 2025, setting a new record for the most 90°F days in a year.
What was the cause of the June 2025 flash flooding in San Antonio?
The June 2025 flash flooding in San Antonio was caused by over 7 inches of rain falling in three hours, qualifying as a 100-year event and resulting in 13 fatalities.
What measures did the City of San Antonio take in response to extreme heat in 2025?
In response to extreme heat, the City of San Antonio urged residents to stay in air-conditioned spaces, wear lightweight clothing, and stay hydrated. The city also provided resources such as cooling centers and outreach programs for vulnerable populations.
Key Features of San Antonio’s 2025 Weather
| Feature | Details |
|---|---|
| Average Annual Temperature | 72.6°F (second-hottest year on record) |
| Record 90°F Days | 162 days |
| June Flash Flooding | Over 7 inches of rain in three hours; 13 fatalities |
| City’s Response | Cooling centers, outreach programs, heat advisories |
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Author: STAFF HERE SAN ANTONIO WRITER
The SAN ANTONIO STAFF WRITER represents the experienced team at HERESanAntonio.com, your go-to source for actionable local news and information in San Antonio, Bexar County, and beyond. Specializing in "news you can use," we cover essential topics like product reviews for personal and business needs, local business directories, politics, real estate trends, neighborhood insights, and state news affecting the area—with deep expertise drawn from years of dedicated reporting and strong community input, including local press releases and business updates. We deliver top reporting on high-value events such as Fiesta San Antonio, San Antonio Stock Show & Rodeo, and Dia de los Muertos. Our coverage extends to key organizations like the Greater San Antonio Chamber of Commerce and United Way of San Antonio and Bexar County, plus leading businesses in retail, insurance, and energy that power the local economy such as H-E-B, USAA, and Valero Energy. As part of the broader HERE network, including HEREAustinTX.com, HERECollegeStation.com, HEREDallas.com, and HEREHouston.com, we provide comprehensive, credible insights into Texas's dynamic landscape.
