September weather in Seneca, SC
The average temperature in Seneca in September is 72.8°F (63.5°F–82.0°F). Average precipitation: 3.68 inches.
September is a fall month in Seneca, and is warmer than the annual average of 61.4°F. Daily temperatures swing about 18.5°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
82.0°F
Avg Low
63.5°F
Precipitation
3.68 in
Daylight
12h 12m
September records in Seneca
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 96.1°F (2011) | 66.0°F (2002) | 2.23 in (2006) |
| September 2 | 100.0°F (2011) | 61.0°F (2017) | 0.89 in (2001) |
| September 3 | 96.1°F (2011) | 59.0°F (2017) | 1.30 in (2001) |
| September 4 | 95.0°F (2007) | 61.0°F (2017) | 3.26 in (2022) |
| September 5 | 95.0°F (2007) | 57.0°F (2010) | 3.45 in (2022) |
| September 6 | 95.0°F (2016) | 61.0°F (2000) | 0.36 in (2017) |
| September 7 | 96.1°F (2016) | 55.9°F (2017) | 5.38 in (2004) |
| September 8 | 97.0°F (2016) | 55.9°F (2017) | 0.89 in (2015) |
| September 9 | 97.0°F (2016) | 57.0°F (2025) | 2.07 in (2015) |
| September 10 | 96.1°F (2007) | 55.0°F (2025) | 0.76 in (2022) |
| September 11 | 95.0°F (2007) | 57.9°F (2017) | 1.07 in (2017) |
| September 12 | 96.1°F (2019) | 60.1°F (2003) | 0.73 in (2020) |
| September 13 | 95.0°F (2019) | 55.9°F (2015) | 1.61 in (2006) |
| September 14 | 95.0°F (2016) | 53.1°F (2015) | 2.30 in (2002) |
| September 15 | 96.1°F (2016) | 55.9°F (2015) | 2.78 in (2002) |
| September 16 | 93.0°F (2019) | 52.0°F (2001) | 0.54 in (2009) |
| September 17 | 102.0°F (2014) | 52.0°F (2000) | 4.15 in (2020) |
| September 18 | 91.0°F (2010) | 55.0°F (2001) | 0.52 in (2002) |
| September 19 | 93.9°F (2010) | 55.9°F (2004) | 0.37 in (2001) |
| September 20 | 96.1°F (2010) | 51.1°F (2020) | 0.59 in (2009) |
| September 21 | 95.0°F (2010) | 51.1°F (2020) | 2.77 in (2009) |
| September 22 | 93.9°F (2024) | 48.9°F (2020) | 2.34 in (2003) |
| September 23 | 93.0°F (2010) | 51.1°F (2021) | 1.34 in (2011) |
| September 24 | 96.1°F (2016) | 51.1°F (2021) | 1.39 in (2024) |
| September 25 | 95.0°F (2010) | 51.1°F (2001) | 1.31 in (2013) |
| September 26 | 93.9°F (2019) | 46.0°F (2001) | 5.24 in (2024) |
| September 27 | 93.0°F (2019) | 48.0°F (2000) | 2.94 in (2004) |
| September 28 | 91.9°F (2017) | 46.9°F (2022) | 0.24 in (2015) |
| September 29 | 93.0°F (2019) | 46.9°F (2003) | 0.90 in (2005) |
| September 30 | 93.0°F (2019) | 46.0°F (2003) | 0.35 in (2012) |