Weather in San Antonio in September
San Antonio temperatures in September range from 20 to 33 and there is an average of 10 days of rain.
Avg Temp
20° - 33°
Avg Rainy Days
10
Avg Dry Days
20
Avg Snow Days
0
Weather Facts - San Antonio in September
* The warmest temperature recorded in in September is 44°C
* The coldest temperature recorded in San Antonio in September is 9°C
* The average rainfall in San Antonio in September is 78 mm