September weather in St. Stephen, SC
The average temperature in St. Stephen in September is 76.7°F (67.4°F–86.0°F). Average precipitation: 5.82 inches.
September is a fall month in St. Stephen, and is warmer than the annual average of 66.1°F. Daily temperatures swing about 18.6°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 12h 12m. For travel, September is a wet month.
Avg High
86.0°F
Avg Low
67.4°F
Precipitation
5.82 in
Daylight
12h 12m
September records in St. Stephen
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 95.0°F (2018) | 59.0°F (1999) | 1.26 in (2006) |
| September 2 | 95.0°F (2013) | 60.1°F (2025) | 1.47 in (1949) |
| September 3 | 96.1°F (2020) | 59.0°F (2008) | 3.17 in (2016) |
| September 4 | 96.1°F (2020) | 57.9°F (2008) | 1.98 in (1998) |
| September 5 | 97.0°F (2020) | 55.9°F (2005) | 1.25 in (2019) |
| September 6 | 96.1°F (1999) | 57.9°F (2005) | 4.00 in (2006) |
| September 7 | 96.1°F (1999) | 45.0°F (2010) | 2.66 in (1950) |
| September 8 | 95.0°F (1999) | 60.1°F (2005) | 0.27 in (1950) |
| September 9 | 97.0°F (2019) | 57.0°F (1998) | 2.88 in (2021) |
| September 10 | 97.0°F (2019) | 52.0°F (1998) | 1.42 in (2021) |
| September 11 | 95.0°F (2007) | 52.0°F (1998) | 1.81 in (1996) |
| September 12 | 95.0°F (2016) | 57.9°F (1999) | 6.48 in (2017) |
| September 13 | 91.9°F (2011) | 57.9°F (1999) | 0.70 in (2007) |
| September 14 | 93.0°F (2011) | 48.9°F (2015) | 2.29 in (2006) |
| September 15 | 93.9°F (2007) | 52.0°F (1996) | 1.28 in (2018) |
| September 16 | 95.0°F (2008) | 27.0°F (1999) | 4.00 in (1999) |
| September 17 | 91.9°F (2009) | 54.0°F (2001) | 1.55 in (2008) |
| September 18 | 97.0°F (2005) | 52.0°F (2001) | 1.40 in (2023) |
| September 19 | 95.0°F (2005) | 52.0°F (2001) | 0.45 in (2024) |
| September 20 | 93.9°F (2005) | 51.1°F (1996) | 0.70 in (1998) |
| September 21 | 93.9°F (2010) | 54.0°F (2011) | 0.85 in (2011) |
| September 22 | 93.9°F (2010) | 48.9°F (1999) | 1.35 in (2010) |
| September 23 | 93.9°F (2022) | 45.0°F (1999) | 0.45 in (1951) |
| September 24 | 93.0°F (2024) | 45.0°F (1999) | 0.75 in (2011) |
| September 25 | 91.9°F (2006) | 48.9°F (1995) | 2.07 in (2015) |
| September 26 | 96.1°F (2019) | 50.0°F (2001) | 1.95 in (2009) |
| September 27 | 95.0°F (2019) | 51.1°F (2001) | 4.26 in (2010) |
| September 28 | 95.0°F (2018) | 48.0°F (2001) | 2.17 in (1948) |
| September 29 | 93.0°F (2017) | 54.0°F (2001) | 2.05 in (2020) |
| September 30 | 93.0°F (2019) | 50.0°F (2001) | 1.74 in (2010) |