September weather in Friendswood, TX
The average temperature in Friendswood in September is 81.1°F (72.3°F–89.9°F). Average precipitation: 5.40 inches.
September is a fall month in Friendswood, and is warmer than the annual average of 71.3°F. Daily temperatures swing about 17.6°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 12h 10m. For travel, September is a wet month.
Avg High
89.9°F
Avg Low
72.3°F
Precipitation
5.40 in
Daylight
12h 10m
September records in Friendswood
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 104.0°F (2000) | 68.0°F (2004) | 2.26 in (2003) |
| September 2 | 104.0°F (2000) | 68.0°F (2009) | 1.70 in (2001) |
| September 3 | 105.1°F (2000) | 70.0°F (2009) | 1.71 in (2018) |
| September 4 | 108.0°F (2000) | 72.0°F (1998) | 1.41 in (2024) |
| September 5 | 107.1°F (2000) | 66.9°F (2011) | 0.27 in (2024) |
| September 6 | 102.9°F (2023) | 60.1°F (2011) | 1.37 in (2010) |
| September 7 | 104.0°F (2023) | 61.0°F (2011) | 1.73 in (2010) |
| September 8 | 105.1°F (2023) | 60.1°F (2011) | 2.26 in (2002) |
| September 9 | 99.0°F (2023) | 61.0°F (2011) | 0.73 in (2001) |
| September 10 | 98.1°F (2023) | 66.0°F (2011) | 2.86 in (1998) |
| September 11 | 98.1°F (2023) | 64.9°F (2012) | 3.04 in (1998) |
| September 12 | 100.0°F (2023) | 62.1°F (2017) | 1.09 in (2007) |
| September 13 | 98.1°F (2011) | 63.0°F (2015) | 3.62 in (2000) |
| September 14 | 96.1°F (2011) | 63.0°F (2015) | 2.76 in (2021) |
| September 15 | 97.0°F (2020) | 64.0°F (1999) | 3.00 in (2023) |
| September 16 | 97.0°F (2004) | 61.0°F (1999) | 0.62 in (1998) |
| September 17 | 97.0°F (2004) | 60.1°F (2000) | 6.04 in (2019) |
| September 18 | 99.0°F (2016) | 57.0°F (2000) | 1.92 in (2014) |
| September 19 | 99.0°F (2016) | 60.1°F (1999) | 1.93 in (2019) |
| September 20 | 97.0°F (1999) | 60.1°F (2012) | 1.05 in (2003) |
| September 21 | 100.0°F (2005) | 60.1°F (2012) | 5.67 in (2020) |
| September 22 | 99.0°F (2022) | 59.0°F (1999) | 3.15 in (2020) |
| September 23 | 96.1°F (2022) | 51.1°F (1999) | 1.37 in (2001) |
| September 24 | 96.1°F (2023) | 53.1°F (1999) | 0.89 in (2006) |
| September 25 | 96.1°F (2013) | 57.9°F (2000) | 0.41 in (2016) |
| September 26 | 96.1°F (2005) | 50.0°F (2000) | 2.67 in (2016) |
| September 27 | 98.1°F (2005) | 53.1°F (2000) | 0.27 in (2015) |
| September 28 | 96.1°F (2011) | 53.1°F (2000) | 0.54 in (2012) |
| September 29 | 95.0°F (1998) | 52.0°F (2000) | 1.41 in (2007) |
| September 30 | 93.9°F (1998) | 55.0°F (1999) | 0.73 in (2021) |