September weather in San Antonio, FL
The average temperature in San Antonio in September is 79.8°F (71.1°F–88.4°F). Average precipitation: 6.63 inches.
September is a fall month in San Antonio, and is warmer than the annual average of 71.9°F. Daily temperatures swing about 17.3°F between overnight low and afternoon high. Expect about 13 days with precipitation. Daylight averages about 12h 10m. For travel, September is a wet month.
Avg High
88.4°F
Avg Low
71.1°F
Precipitation
6.63 in
Daylight
12h 10m
September records in San Antonio
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 96.1°F (1963) | 66.0°F (1906) | 4.73 in (1985) |
| September 2 | 96.1°F (1963) | 66.0°F (1934) | 5.76 in (2016) |
| September 3 | 96.1°F (1944) | 64.0°F (1934) | 3.67 in (1945) |
| September 4 | 97.0°F (1944) | 66.9°F (1969) | 5.64 in (1935) |
| September 5 | 96.1°F (1925) | 64.0°F (1909) | 8.78 in (1933) |
| September 6 | 97.0°F (1989) | 64.9°F (1997) | 7.49 in (1950) |
| September 7 | 98.1°F (1925) | 66.0°F (1984) | 2.98 in (2011) |
| September 8 | 99.0°F (1925) | 66.0°F (1984) | 6.09 in (1929) |
| September 9 | 96.1°F (1990) | 64.9°F (1997) | 2.71 in (1912) |
| September 10 | 96.1°F (1925) | 64.9°F (1896) | 5.50 in (1964) |
| September 11 | 97.0°F (1925) | 64.9°F (1956) | 5.20 in (1960) |
| September 12 | 97.0°F (1989) | 64.9°F (1946) | 3.23 in (1903) |
| September 13 | 96.1°F (1989) | 64.9°F (1946) | 3.40 in (2003) |
| September 14 | 96.1°F (1989) | 59.0°F (2001) | 4.02 in (2001) |
| September 15 | 96.1°F (1984) | 62.1°F (1976) | 2.80 in (1901) |
| September 16 | 96.1°F (1927) | 61.0°F (1976) | 2.97 in (1922) |
| September 17 | 97.0°F (1999) | 63.0°F (1895) | 2.62 in (2000) |
| September 18 | 96.1°F (1925) | 60.1°F (1910) | 4.58 in (1947) |
| September 19 | 95.0°F (1945) | 55.0°F (1981) | 2.83 in (1943) |
| September 20 | 97.0°F (2000) | 53.1°F (1981) | 5.10 in (1897) |
| September 21 | 97.0°F (1925) | 57.9°F (1897) | 3.08 in (1927) |
| September 22 | 95.0°F (1925) | 50.0°F (1897) | 2.00 in (1993) |
| September 23 | 95.0°F (1900) | 57.0°F (1897) | 3.60 in (2013) |
| September 24 | 97.0°F (1925) | 55.9°F (1990) | 3.14 in (1928) |
| September 25 | 95.0°F (1925) | 59.0°F (1990) | 3.43 in (1908) |
| September 26 | 95.0°F (2009) | 61.0°F (1903) | 4.44 in (2004) |
| September 27 | 95.0°F (1980) | 57.9°F (1956) | 5.67 in (1949) |
| September 28 | 95.0°F (1944) | 57.9°F (1931) | 4.00 in (2015) |
| September 29 | 96.1°F (1972) | 57.0°F (1931) | 3.60 in (1960) |
| September 30 | 96.1°F (2004) | 57.9°F (1947) | 1.74 in (1920) |