Weather By Day

September Weather In San Antonio  
September San Antonio Weather
Record High: 105°F
Normal High: 90°F
Normal Low: 69°F
Record Low: 46°F
Avg Monthly Rain: 3"
Rec 1 Day Rain: 6.54"

San Antonio Weather In September

The highest recorded temperature for San Antonio Texas for the past 69 years in September was 105 degrees Fahrenheit, measured on September 21, 2005, while the standard high temperature is 90. The lowest reported temperature in September for San Antonio for the past 69 years was 46 most recently encountered on September 22, 1983, while the normal low measured temperature is 69.

US National Weather Service San Antonio September Weather data records that on September 22, 1995, the high temperature did not exceed 63 degrees Fahrenheit, the lowest high measured in San Antonio in the past 69 years. Weather Service records additionally indicate that on September 16, 2006, the low for the day was not measured below 80 degrees, the highest low temperature recorded in San Antonio in the last 69 years.

According to the National Weather Service, the high temperature in San Antonio in September on the first day of the month averages 94 degrees and the high on the last day of the month averages 86 degrees. The average daily low temperature in San Antonio on September First is 73 degrees Fahrenheit and the average low on the last day of September is 62 degrees.

San Antonio usually receives an average of 3 inches of precipitation during September. The most precipitation recorded on a single day in September, according to September San Antonio Weather data, was 6.54 inches on September 26, 1973.