San Antonio Weather Records

San Antonio, Texas weather averages and records from 1893–2024 based on data made available by the NOAA.
All-Time Recorded High
The highest temperature ever recorded in San Antonio, Texas was 111 °F which occurred on September 5, 2000.
Highest Temperatures: All-Time By Year
All-Time Recorded Low
The lowest temperature ever recorded in San Antonio, Texas was 0 °F which occurred on January 31, 1949.
Lowest Temperatures: All-Time By Year
San Antonio Weather by Month
Averages based on the years 1991–2020
Month Average (°F) Record (°F) Average (inches)
High ☀️ Low 🌙 High ☀️ Low 🌙 Precipitation 💧 Snow ❄️
January 63.8 41.4 93 0 2.0 0.0
February 68.2 45.6 100 5 1.7 0.1
March 74.3 52.2 100 17 2.3 0.0
April 81.0 58.9 101 29 2.4 0.0
May 87.4 67.1 105 39 4.4 0.0
June 92.9 73.2 108 47 3.3 0.0
July 95.5 75.3 108 60 2.4 0.0
August 96.7 75.4 110 58 2.2 0.0
September 90.9 70.0 111 41 3.9 0.0
October 82.8 60.7 110 24 3.8 0.0
November 72.2 50.4 101 15 2.1 0.0
December 65.2 43.0 90 6 2.0 0.1
Entire year 81.0 59.5 111 0 32.4 0.1
More San Antonio Weather Records
1893–2024
Highest daily low 82 °F August 21, 2023
Lowest daily high 22 °F January 12, 1909
Greatest daily range
(Difference of high and low)
56 °F December 21, 1990
Greatest difference in daily high
over two conscutive days
56 °F Dec 21–22, 1990
Most daily precipitation 11.3 inches October 17, 1998
Most monthly precipitation 18.1 inches October 1998
Most yearly precipitation 52.3 inches 1973
Most yearly days with precipitation 129 1919
Earliest snow in season November 23 1957
Latest snow in season March 10 1932
Most daily snow 13.2 inches January 12, 1985
Most monthly snow 15.9 inches January 1985
Most yearly snow 15.9 inches 1985
Most snow in a winter 15.9 inches 1984–1985
Greatest snow accumulation 9.0 inches January 13, 1985
Earliest freeze October 30 1917
Earliest day ≥ 100 °F February 21 1996
Latest freeze April 4 1920
Latest day ≥ 100 °F November 9 1904
Most days in a year < 32 °F 36 1966
Most days in a year ≥ 80 °F 248 1933
Most days in a year ≥ 90 °F 155 2022
Most days in a year ≥ 100 °F 75 2023
Most days in a year ≥ 110 °F 1 2011
San Antonio Weather Streaks
Most consecutive days...
With precipitation 10 days Sep 17–26, 2010
Without precipitation 71 days Jun 23 – Sep 1, 1924
High temperature at or
below freezing
5 days Dec 19–23, 1909
High temperature ≥ 80 °F 186 days Apr 23 – Oct 25, 1897
High temperature ≥ 90 °F 119 days Jun 8 – Oct 4, 2023
High temperature ≥ 100 °F 23 days Jul 30 – Aug 21, 2023
Plant Hardiness Zone
9A
San Antonio is in plant hardiness zone 9A
based on average yearly minimum temperature from 1991–2020
Facts About San Antonio Weather
San Antonio Weather by Year
More San Antonio Weather
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Weather Station Details
Years Station Coordinates
1947–2024 San Antonio International Airport location
1893–1946 San Antonio Nursery location