September weather in Sweetwater, TN
The average temperature in Sweetwater in September is 71.3°F (58.9°F–83.7°F). Average precipitation: 4.35 inches.
September is a fall month in Sweetwater, and is warmer than the annual average of 58.4°F. Daily temperatures swing about 24.8°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 12h 13m. For travel, September is a comfortable month to visit.
Avg High
83.7°F
Avg Low
58.9°F
Precipitation
4.35 in
Daylight
12h 13m
September records in Sweetwater
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 96.1°F (2011) | 52.0°F (1999) | 2.46 in (2021) |
| September 2 | 99.0°F (2011) | 53.1°F (1999) | 0.87 in (2024) |
| September 3 | 100.0°F (2011) | 54.0°F (1999) | 1.18 in (2022) |
| September 4 | 100.9°F (2011) | 50.0°F (2010) | 0.86 in (2003) |
| September 5 | 98.1°F (2007) | 44.1°F (2010) | 1.26 in (2011) |
| September 6 | 99.0°F (1998) | 44.1°F (2010) | 8.02 in (2011) |
| September 7 | 100.0°F (1998) | 44.1°F (2017) | 0.69 in (2011) |
| September 8 | 100.0°F (1998) | 44.1°F (2017) | 1.68 in (2004) |
| September 9 | 98.1°F (1999) | 45.0°F (1998) | 0.34 in (2008) |
| September 10 | 96.1°F (2007) | 44.1°F (1998) | 2.09 in (2015) |
| September 11 | 97.0°F (2002) | 43.0°F (1998) | 0.80 in (2015) |
| September 12 | 95.0°F (2019) | 46.0°F (1998) | 1.08 in (2014) |
| September 13 | 96.1°F (2019) | 46.9°F (2015) | 0.63 in (2006) |
| September 14 | 100.0°F (1998) | 44.1°F (2015) | 0.60 in (2007) |
| September 15 | 96.1°F (1998) | 43.0°F (2015) | 1.51 in (2007) |
| September 16 | 95.0°F (2016) | 44.1°F (2000) | 1.27 in (2005) |
| September 17 | 95.0°F (1998) | 41.0°F (1999) | 6.42 in (2004) |
| September 18 | 95.0°F (2019) | 41.0°F (1999) | 4.56 in (2012) |
| September 19 | 93.9°F (1998) | 42.1°F (1999) | 1.30 in (2016) |
| September 20 | 96.1°F (1998) | 44.1°F (2000) | 1.18 in (2001) |
| September 21 | 95.0°F (1997) | 42.1°F (2006) | 1.16 in (2009) |
| September 22 | 96.1°F (2010) | 39.9°F (2020) | 2.18 in (2013) |
| September 23 | 91.9°F (2010) | 35.1°F (1999) | 3.29 in (2003) |
| September 24 | 95.0°F (2010) | 35.1°F (1999) | 3.75 in (1997) |
| September 25 | 95.0°F (2007) | 37.0°F (2012) | 2.65 in (2000) |
| September 26 | 95.0°F (2016) | 35.1°F (2001) | 2.39 in (2018) |
| September 27 | 93.0°F (2019) | 35.1°F (2001) | 3.21 in (2024) |
| September 28 | 93.9°F (1998) | 37.0°F (2001) | 1.42 in (2018) |
| September 29 | 93.0°F (2019) | 37.0°F (2003) | 0.57 in (2020) |
| September 30 | 96.1°F (2019) | 37.0°F (2003) | 2.10 in (1998) |