September weather in Hartsville, SC
The average temperature in Hartsville in September is 74.0°F (63.1°F–84.8°F). Average precipitation: 4.92 inches.
September is a fall month in Hartsville, and is warmer than the annual average of 62.4°F. Daily temperatures swing about 21.7°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 12m. For travel, September is a comfortable month to visit.
Avg High
84.8°F
Avg Low
63.1°F
Precipitation
4.92 in
Daylight
12h 12m
September records in Hartsville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 98.1°F (2018) | 54.0°F (1999) | 2.62 in (2004) |
| September 2 | 98.1°F (2014) | 55.0°F (1999) | 0.77 in (2013) |
| September 3 | 99.0°F (2014) | 55.0°F (2021) | 3.37 in (2016) |
| September 4 | 97.0°F (2010) | 54.0°F (2021) | 4.00 in (1998) |
| September 5 | 96.1°F (2014) | 46.0°F (1997) | 2.40 in (2000) |
| September 6 | 95.0°F (2018) | 46.9°F (1997) | 2.57 in (2008) |
| September 7 | 97.0°F (2023) | 54.0°F (1997) | 0.31 in (2024) |
| September 8 | 95.0°F (2018) | 53.1°F (2017) | 8.34 in (2004) |
| September 9 | 95.0°F (2019) | 52.0°F (1998) | 1.79 in (2014) |
| September 10 | 93.9°F (2007) | 50.0°F (1998) | 1.15 in (2018) |
| September 11 | 93.9°F (2007) | 51.1°F (1998) | 0.76 in (2018) |
| September 12 | 96.1°F (2002) | 54.0°F (1998) | 2.60 in (1996) |
| September 13 | 95.0°F (2019) | 53.1°F (1999) | 0.91 in (2023) |
| September 14 | 93.0°F (2019) | 50.0°F (2015) | 2.46 in (2006) |
| September 15 | 93.0°F (2010) | 46.9°F (2015) | 1.22 in (2020) |
| September 16 | 95.0°F (2010) | 48.0°F (2015) | 6.33 in (2018) |
| September 17 | 91.9°F (2019) | 44.1°F (2001) | 4.00 in (2018) |
| September 18 | 96.1°F (2005) | 48.0°F (2001) | 3.43 in (2020) |
| September 19 | 93.9°F (2005) | 50.0°F (2001) | 1.73 in (1994) |
| September 20 | 91.9°F (2025) | 53.1°F (2004) | 0.05 in (2014) |
| September 21 | 96.1°F (1997) | 52.0°F (2006) | 1.58 in (2001) |
| September 22 | 93.0°F (2010) | 52.0°F (1999) | 1.87 in (2021) |
| September 23 | 97.0°F (2022) | 43.0°F (1999) | 2.48 in (2000) |
| September 24 | 93.9°F (2007) | 43.0°F (1999) | 1.06 in (2011) |
| September 25 | 93.9°F (2025) | 44.1°F (1999) | 1.95 in (2005) |
| September 26 | 93.0°F (2009) | 43.0°F (2001) | 2.54 in (2020) |
| September 27 | 97.0°F (2019) | 46.0°F (2001) | 1.61 in (2024) |
| September 28 | 93.0°F (2007) | 44.1°F (2001) | 2.01 in (2004) |
| September 29 | 95.0°F (2017) | 46.0°F (2003) | 0.92 in (1999) |
| September 30 | 96.1°F (2019) | 43.0°F (2003) | 2.54 in (2010) |