September weather in Sunset Valley, TX
The average temperature in Sunset Valley in September is 78.4°F (66.2°F–90.5°F). Average precipitation: inches.
September is a fall month in Sunset Valley, and is warmer than the annual average of 67.3°F. Daily temperatures swing about 24.3°F between overnight low and afternoon high. Daylight averages about 12h 10m. For travel, September is hot.
Avg High
90.5°F
Avg Low
66.2°F
Precipitation
in
Daylight
12h 10m
September records in Sunset Valley
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 102.9°F (2011) | 61.0°F (2017) | 0.35 in (2007) |
| September 2 | 102.0°F (2006) | 62.1°F (2017) | 0.00 in (2004) |
| September 3 | 102.0°F (2011) | 61.0°F (2004) | 0.34 in (2007) |
| September 4 | 102.0°F (2012) | 61.0°F (2004) | 0.44 in (2018) |
| September 5 | 104.0°F (2012) | 64.0°F (2017) | 1.41 in (2013) |
| September 6 | 100.9°F (2012) | 60.1°F (2011) | 0.14 in (2006) |
| September 7 | 100.9°F (2012) | 51.1°F (2017) | 0.68 in (2010) |
| September 8 | 102.0°F (2012) | 52.0°F (2017) | 4.10 in (2010) |
| September 9 | 97.0°F (2008) | 52.0°F (2017) | 0.48 in (2018) |
| September 10 | 96.1°F (2008) | 55.0°F (2012) | 1.65 in (2018) |
| September 11 | 97.0°F (2011) | 55.0°F (2012) | 1.05 in (2009) |
| September 12 | 100.9°F (2011) | 53.1°F (2017) | 2.30 in (2009) |
| September 13 | 104.0°F (2011) | 53.1°F (2017) | 2.73 in (2009) |
| September 14 | 102.9°F (2011) | 55.9°F (2017) | 0.45 in (2012) |
| September 15 | 100.9°F (2011) | 59.0°F (2006) | 1.17 in (2012) |
| September 16 | 99.0°F (2005) | 62.1°F (2008) | 0.18 in (2018) |
| September 17 | 100.0°F (2006) | 55.9°F (2008) | 1.57 in (2012) |
| September 18 | 99.0°F (2004) | 55.0°F (2008) | 1.40 in (2006) |
| September 19 | 98.1°F (2004) | 57.9°F (2008) | 0.08 in (2006) |
| September 20 | 98.1°F (2005) | 55.0°F (2006) | 0.13 in (2013) |
| September 21 | 98.1°F (2005) | 54.0°F (2006) | 1.35 in (2013) |
| September 22 | 100.0°F (2005) | 57.0°F (2012) | 2.35 in (2009) |
| September 23 | 100.9°F (2005) | 55.0°F (2013) | 0.61 in (2009) |
| September 24 | 98.1°F (2006) | 55.0°F (2013) | 0.21 in (2009) |
| September 25 | 98.1°F (2005) | 55.9°F (2011) | 0.23 in (2009) |
| September 26 | 107.1°F (2005) | 55.0°F (2006) | 1.02 in (2016) |
| September 27 | 106.0°F (2005) | 54.0°F (2006) | 1.63 in (2017) |
| September 28 | 100.9°F (2005) | 51.1°F (2010) | 0.11 in (2017) |
| September 29 | 106.0°F (2005) | 52.0°F (2010) | 1.96 in (2012) |
| September 30 | 98.1°F (2011) | 50.0°F (2016) | 0.40 in (2007) |