San Antonio - Recent September Temperatures and Rainfall





The numbers here describe what the September weather in San Antonio, Texas was like for every year since 2010. A series of tables gives September data by year for temperature and precipitation.

They begin with average maximum and minimum temperatures in degrees Fahrenheit and Celsius. That's followed by how many really hot days occurred each September. Then there's information on how much rain actually landed this month during recent years, as well as how often San Antonio had wet weather.

The climate data come from weather measurements made at San Antonio's International Airport.

Temperature Weather iconTemperature

September temperature averages by year in San Antonio
High °F Low °F Year High °C Low °C
94 70 2021 35 21
89 69 2020 32 20
97 75 2019 36 24
87 72 2018 30 22
89 70 2017 32 21
91 72 2016 33 22
94 73 2015 34 23
92 72 2014 33 22
94 72 2013 35 22
90 69 2012 32 20
96 70 2011 36 21
89 71 2010 32 22
Number of days in September when the temperature in San Antonio rose to at least 70 or 90 degrees Fahrenheit
Year 70 °F
21 °C
90 °F
32 °C
2021 30 24
2020 30 15
2019 30 30
2018 30 9
2017 30 17
2016 30 23
2015 30 30
2014 30 21
2013 30 25
2012 30 18
2011 30 28
2010 30 16

Rainy Weather iconRain

This table gives the total precipitation that fell on San Antonio during September in each year from 2010. The number of days with precipitation counts the days when rainfall amounted to 0.01 inches (0.3 millimeters) or more.

Total rainfall for September in San Antonio
Days Year Inches Milli­metres
6 2021 2.6 66
7 2020 3.1 78
5 2019 1.5 37
14 2018 16.9 428
6 2017 2.8 71
6 2016 6.3 160
3 2015 2.3 59
10 2014 1.8 45
9 2013 3.7 94
5 2012 7.3 186
4 2011 2.9 74
14 2010 9.4 238
Reference

Jay Lawrimore. 2016. Global Summary of the Month, Version 1.0. NOAA National Centers for Environmental Information. 

San Antonio - Recent Years
San Antonio - Extremes
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