September weather in Willis, TX
The average temperature in Willis in September is 78.0°F (66.4°F–89.6°F). Average precipitation: 3.60 inches.
September is a fall month in Willis, and is warmer than the annual average of 67.7°F. Daily temperatures swing about 23.2°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 12h 10m. For travel, September is hot.
Avg High
89.6°F
Avg Low
66.4°F
Precipitation
3.60 in
Daylight
12h 10m
September records in Willis
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 107.1°F (2000) | 64.0°F (2023) | 1.38 in (2024) |
| September 2 | 106.0°F (2000) | 63.0°F (2009) | 1.00 in (2022) |
| September 3 | 107.1°F (2000) | 66.0°F (2009) | 1.01 in (2022) |
| September 4 | 109.9°F (2000) | 64.9°F (2005) | 0.85 in (2001) |
| September 5 | 107.1°F (2000) | 57.0°F (2011) | 0.82 in (1999) |
| September 6 | 102.9°F (2023) | 48.9°F (2011) | 0.79 in (2002) |
| September 7 | 104.0°F (2023) | 50.0°F (2011) | 1.72 in (2010) |
| September 8 | 107.1°F (2023) | 51.1°F (2011) | 1.17 in (2002) |
| September 9 | 98.1°F (2023) | 53.1°F (2011) | 2.50 in (2001) |
| September 10 | 97.0°F (2000) | 54.0°F (2012) | 1.45 in (2018) |
| September 11 | 100.9°F (2011) | 54.0°F (2021) | 5.12 in (1998) |
| September 12 | 102.0°F (2011) | 53.1°F (2017) | 1.26 in (2003) |
| September 13 | 102.9°F (2011) | 53.1°F (2015) | 1.17 in (2008) |
| September 14 | 100.0°F (2011) | 53.1°F (2015) | 1.75 in (2021) |
| September 15 | 99.0°F (2005) | 59.0°F (1999) | 1.12 in (2023) |
| September 16 | 96.1°F (2004) | 55.0°F (1999) | 1.21 in (2012) |
| September 17 | 98.1°F (2005) | 53.1°F (2000) | 0.64 in (2014) |
| September 18 | 98.1°F (2005) | 51.1°F (2000) | 3.20 in (2019) |
| September 19 | 97.0°F (2005) | 55.9°F (1999) | 11.18 in (2019) |
| September 20 | 99.0°F (2005) | 53.1°F (2012) | 3.49 in (2013) |
| September 21 | 102.0°F (2005) | 54.0°F (2012) | 0.78 in (2003) |
| September 22 | 100.9°F (2005) | 50.0°F (1999) | 2.80 in (2018) |
| September 23 | 97.0°F (2005) | 44.1°F (1999) | 0.86 in (2018) |
| September 24 | 97.0°F (2023) | 46.9°F (1999) | 0.34 in (2009) |
| September 25 | 100.0°F (2005) | 52.0°F (2000) | 0.13 in (2016) |
| September 26 | 100.9°F (2005) | 48.0°F (2000) | 0.34 in (2016) |
| September 27 | 100.9°F (2005) | 46.9°F (2000) | 1.33 in (1999) |
| September 28 | 98.1°F (2011) | 48.0°F (2000) | 1.59 in (2015) |
| September 29 | 98.1°F (2011) | 48.9°F (2020) | 1.67 in (2021) |
| September 30 | 93.9°F (1998) | 48.0°F (2020) | 0.27 in (2007) |