September weather in San Augustine, TX
The average temperature in San Augustine in September is 76.4°F (64.3°F–88.5°F). Average precipitation: 4.18 inches.
September is a fall month in San Augustine, and is warmer than the annual average of 65.4°F. Daily temperatures swing about 24.2°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 12h 11m. For travel, September is hot.
Avg High
88.5°F
Avg Low
64.3°F
Precipitation
4.18 in
Daylight
12h 11m
September records in San Augustine
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 102.0°F (2011) | 53.1°F (1915) | 3.03 in (1981) |
| September 2 | 100.0°F (2011) | 55.0°F (1915) | 1.05 in (1994) |
| September 3 | 100.9°F (2023) | 64.0°F (1915) | 2.73 in (1994) |
| September 4 | 99.0°F (2013) | 63.0°F (1915) | 2.16 in (1991) |
| September 5 | 100.0°F (1912) | 59.0°F (2003) | 1.40 in (1917) |
| September 6 | 100.0°F (2013) | 54.0°F (2011) | 1.15 in (2024) |
| September 7 | 99.0°F (1909) | 52.0°F (2011) | 1.43 in (1986) |
| September 8 | 102.0°F (2023) | 55.9°F (2011) | 1.60 in (2018) |
| September 9 | 100.0°F (1909) | 54.0°F (2011) | 2.03 in (1977) |
| September 10 | 102.0°F (1909) | 52.0°F (2021) | 2.25 in (1989) |
| September 11 | 100.9°F (1909) | 51.1°F (2018) | 3.28 in (1998) |
| September 12 | 102.0°F (1909) | 53.1°F (2017) | 1.20 in (1998) |
| September 13 | 100.9°F (2011) | 53.1°F (2015) | 4.61 in (1913) |
| September 14 | 102.0°F (2011) | 54.0°F (2015) | 7.51 in (1978) |
| September 15 | 99.0°F (2019) | 52.0°F (2015) | 2.00 in (1912) |
| September 16 | 99.0°F (2005) | 52.0°F (2015) | 1.81 in (1987) |
| September 17 | 97.0°F (1911) | 57.9°F (1910) | 1.40 in (2012) |
| September 18 | 98.1°F (2004) | 50.0°F (1916) | 0.96 in (2012) |
| September 19 | 97.0°F (1909) | 48.9°F (1910) | 3.82 in (1996) |
| September 20 | 97.0°F (1911) | 53.1°F (1916) | 3.96 in (1979) |
| September 21 | 100.0°F (2005) | 45.0°F (1913) | 3.69 in (2013) |
| September 22 | 98.1°F (1909) | 46.0°F (1913) | 2.00 in (1984) |
| September 23 | 97.0°F (2005) | 50.0°F (2021) | 1.51 in (2000) |
| September 24 | 97.0°F (2019) | 51.1°F (1914) | 1.06 in (2006) |
| September 25 | 96.1°F (2013) | 48.0°F (1909) | 2.45 in (2000) |
| September 26 | 97.0°F (2005) | 50.0°F (2001) | 6.45 in (1913) |
| September 27 | 97.0°F (2011) | 48.0°F (2001) | 1.10 in (2018) |
| September 28 | 97.0°F (1911) | 42.1°F (1909) | 1.80 in (1976) |
| September 29 | 97.0°F (2011) | 37.9°F (1909) | 2.97 in (2013) |
| September 30 | 97.0°F (2011) | 36.0°F (2014) | 2.61 in (2012) |