September weather in Atlanta, GA
The average temperature in Atlanta in September is 73.5°F (63.0°F–83.9°F). Average precipitation: 3.36 inches.
September is a fall month in Atlanta, and is warmer than the annual average of 62.3°F. Daily temperatures swing about 20.9°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 12h 12m. For travel, September is a comfortable month to visit.
Avg High
83.9°F
Avg Low
63.0°F
Precipitation
3.36 in
Daylight
12h 12m
September records in Atlanta
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 93.0°F (2011) | 57.9°F (1999) | 4.20 in (2000) |
| September 2 | 96.1°F (2011) | 57.9°F (1999) | 0.49 in (2013) |
| September 3 | 95.0°F (2011) | 57.9°F (2017) | 1.01 in (2001) |
| September 4 | 97.0°F (2019) | 57.9°F (2017) | 0.57 in (2014) |
| September 5 | 97.0°F (1999) | 53.1°F (2010) | 0.66 in (2011) |
| September 6 | 97.0°F (1999) | 54.0°F (2010) | 0.16 in (2011) |
| September 7 | 96.1°F (2019) | 51.1°F (2017) | 2.10 in (2004) |
| September 8 | 96.1°F (2019) | 51.1°F (2017) | 0.45 in (2008) |
| September 9 | 99.0°F (2019) | 55.0°F (2011) | 0.27 in (1999) |
| September 10 | 97.0°F (2019) | 54.0°F (2011) | 0.90 in (2019) |
| September 11 | 96.1°F (2010) | 51.1°F (1999) | 3.35 in (2017) |
| September 12 | 97.0°F (2019) | 57.9°F (2012) | 0.39 in (2014) |
| September 13 | 97.0°F (2019) | 52.0°F (2015) | 1.29 in (2006) |
| September 14 | 93.9°F (2018) | 48.0°F (2015) | 1.94 in (2003) |
| September 15 | 93.9°F (2016) | 52.0°F (2015) | 0.56 in (2021) |
| September 16 | 95.0°F (2019) | 48.9°F (2001) | 3.25 in (2004) |
| September 17 | 96.1°F (2019) | 48.0°F (1999) | 3.53 in (2020) |
| September 18 | 93.0°F (2010) | 53.1°F (1999) | 1.90 in (2002) |
| September 19 | 93.9°F (2018) | 52.0°F (2004) | 1.06 in (2021) |
| September 20 | 95.0°F (2010) | 51.1°F (2006) | 2.61 in (2009) |
| September 21 | 95.0°F (2010) | 48.0°F (2006) | 4.96 in (2009) |
| September 22 | 95.0°F (2024) | 48.9°F (1999) | 1.30 in (2003) |
| September 23 | 93.9°F (2024) | 42.1°F (1999) | 1.10 in (2011) |
| September 24 | 91.9°F (2016) | 45.0°F (1999) | 1.02 in (2001) |
| September 25 | 93.0°F (2010) | 46.0°F (2008) | 2.18 in (2024) |
| September 26 | 93.9°F (2019) | 42.1°F (2001) | 4.66 in (2024) |
| September 27 | 95.0°F (2019) | 42.1°F (2001) | 3.31 in (2004) |
| September 28 | 91.0°F (2017) | 44.1°F (2022) | 0.19 in (2018) |
| September 29 | 93.0°F (2019) | 45.0°F (2003) | 0.56 in (1999) |
| September 30 | 96.1°F (2019) | 43.0°F (2003) | 1.14 in (2012) |