September weather in Duncanville, TX
The average temperature in Duncanville in September is 78.7°F (68.2°F–89.3°F). Average precipitation: 2.95 inches.
September is a fall month in Duncanville, and is warmer than the annual average of 66.9°F. Daily temperatures swing about 21.1°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
89.3°F
Avg Low
68.2°F
Precipitation
2.95 in
Daylight
12h 11m
September records in Duncanville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 106.0°F (2000) | 62.1°F (2004) | 1.16 in (2010) |
| September 2 | 107.1°F (2000) | 66.0°F (2004) | 0.51 in (2020) |
| September 3 | 108.0°F (2000) | 64.9°F (2004) | 0.84 in (2007) |
| September 4 | 109.0°F (1998) | 62.1°F (2010) | 1.32 in (2006) |
| September 5 | 104.0°F (2012) | 64.9°F (2005) | 2.42 in (2007) |
| September 6 | 105.1°F (2012) | 57.9°F (2011) | 0.49 in (2004) |
| September 7 | 107.1°F (2023) | 55.9°F (2003) | 1.22 in (2010) |
| September 8 | 109.0°F (2023) | 57.9°F (2004) | 4.52 in (2010) |
| September 9 | 99.0°F (2014) | 55.0°F (2024) | 1.89 in (2007) |
| September 10 | 100.9°F (2014) | 55.0°F (2024) | 0.49 in (2020) |
| September 11 | 100.0°F (2000) | 61.0°F (2016) | 2.90 in (2009) |
| September 12 | 104.0°F (2011) | 59.0°F (2001) | 1.77 in (2009) |
| September 13 | 108.0°F (2011) | 57.0°F (2014) | 5.33 in (2009) |
| September 14 | 100.0°F (2011) | 60.1°F (2003) | 1.98 in (2009) |
| September 15 | 97.0°F (2019) | 57.9°F (2008) | 0.27 in (1998) |
| September 16 | 97.0°F (2013) | 53.1°F (2008) | 1.20 in (1998) |
| September 17 | 97.0°F (2005) | 53.1°F (2008) | 0.63 in (2014) |
| September 18 | 98.1°F (2013) | 55.9°F (2000) | 1.58 in (2003) |
| September 19 | 100.9°F (2016) | 55.0°F (2012) | 0.97 in (2013) |
| September 20 | 100.9°F (2021) | 57.0°F (2003) | 1.50 in (2013) |
| September 21 | 99.0°F (2005) | 57.9°F (2002) | 2.01 in (2018) |
| September 22 | 100.0°F (2005) | 48.0°F (1999) | 2.50 in (2018) |
| September 23 | 99.0°F (2023) | 51.1°F (1999) | 2.29 in (2024) |
| September 24 | 100.0°F (2023) | 54.0°F (2014) | 1.07 in (2023) |
| September 25 | 100.9°F (2005) | 48.0°F (2000) | 1.22 in (2010) |
| September 26 | 99.0°F (2005) | 44.1°F (2000) | 1.05 in (2016) |
| September 27 | 97.0°F (2005) | 48.9°F (2000) | 0.04 in (2006) |
| September 28 | 102.0°F (2005) | 52.0°F (2001) | 1.04 in (2013) |
| September 29 | 100.9°F (2011) | 53.1°F (2000) | 3.34 in (2012) |
| September 30 | 95.0°F (1998) | 46.0°F (1999) | 0.20 in (2012) |