September weather in Gainesville, TX
The average temperature in Gainesville in September is 75.9°F (65.1°F–86.6°F). Average precipitation: 3.90 inches.
September is a fall month in Gainesville, and is warmer than the annual average of 63.2°F. Daily temperatures swing about 21.5°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 12h 12m. For travel, September is a comfortable month to visit.
Avg High
86.6°F
Avg Low
65.1°F
Precipitation
3.90 in
Daylight
12h 12m
September records in Gainesville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 109.0°F (2000) | 61.0°F (1987) | 2.75 in (1994) |
| September 2 | 109.9°F (2000) | 61.0°F (1987) | 4.45 in (2010) |
| September 3 | 111.0°F (2000) | 63.0°F (1987) | 2.83 in (1992) |
| September 4 | 111.9°F (2000) | 57.0°F (2010) | 2.56 in (2018) |
| September 5 | 111.9°F (2000) | 57.0°F (2010) | 2.00 in (2001) |
| September 6 | 105.1°F (2012) | 55.9°F (2011) | 1.24 in (2018) |
| September 7 | 102.0°F (1990) | 55.0°F (2011) | 0.32 in (1995) |
| September 8 | 108.0°F (2023) | 55.9°F (2004) | 1.73 in (2010) |
| September 9 | 109.9°F (2023) | 55.9°F (2004) | 4.44 in (2010) |
| September 10 | 97.0°F (2009) | 53.1°F (2020) | 1.56 in (2020) |
| September 11 | 102.0°F (2000) | 53.1°F (2020) | 2.45 in (1992) |
| September 12 | 102.9°F (2000) | 57.0°F (2017) | 2.16 in (2003) |
| September 13 | 102.9°F (2011) | 52.0°F (2014) | 2.63 in (2009) |
| September 14 | 105.1°F (2011) | 52.0°F (1989) | 4.02 in (1993) |
| September 15 | 100.0°F (1997) | 46.9°F (1993) | 2.01 in (1987) |
| September 16 | 98.1°F (1990) | 46.0°F (1993) | 2.10 in (1994) |
| September 17 | 99.0°F (1997) | 51.1°F (1993) | 0.86 in (2009) |
| September 18 | 100.0°F (1997) | 54.0°F (1993) | 3.57 in (1988) |
| September 19 | 99.0°F (2005) | 48.0°F (1987) | 0.93 in (1996) |
| September 20 | 99.0°F (2005) | 51.1°F (1991) | 0.62 in (2002) |
| September 21 | 100.0°F (2005) | 52.0°F (1991) | 3.46 in (2019) |
| September 22 | 99.0°F (2005) | 44.1°F (1995) | 1.18 in (2025) |
| September 23 | 102.0°F (2005) | 44.1°F (1995) | 0.71 in (2019) |
| September 24 | 100.0°F (2000) | 39.9°F (1989) | 1.88 in (1988) |
| September 25 | 99.0°F (2022) | 41.0°F (1989) | 2.18 in (2000) |
| September 26 | 100.9°F (2005) | 45.0°F (1989) | 1.09 in (2016) |
| September 27 | 96.1°F (2005) | 46.9°F (2000) | 0.79 in (2018) |
| September 28 | 96.1°F (2005) | 46.9°F (1996) | 0.45 in (1996) |
| September 29 | 100.9°F (2005) | 50.0°F (1989) | 1.54 in (2013) |
| September 30 | 102.0°F (2011) | 48.9°F (1996) | 1.23 in (2012) |