September weather in Cary, NC
The average temperature in Cary in September is 71.6°F (61.7°F–81.5°F). Average precipitation: 5.27 inches.
September is a fall month in Cary, and is warmer than the annual average of 60.1°F. Daily temperatures swing about 19.8°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 12h 13m. For travel, September is a wet month.
Avg High
81.5°F
Avg Low
61.7°F
Precipitation
5.27 in
Daylight
12h 13m
September records in Cary
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 95.0°F (1993) | 59.0°F (2011) | 2.59 in (2020) |
| September 2 | 100.0°F (1993) | 57.0°F (2009) | 2.49 in (2024) |
| September 3 | 95.0°F (1993) | 57.0°F (1995) | 2.10 in (2016) |
| September 4 | 95.0°F (2010) | 55.9°F (1995) | 2.21 in (1998) |
| September 5 | 93.9°F (2023) | 48.9°F (1997) | 3.28 in (1999) |
| September 6 | 95.0°F (1993) | 48.9°F (1997) | 6.06 in (1996) |
| September 7 | 96.1°F (2023) | 53.1°F (1997) | 2.42 in (2011) |
| September 8 | 93.9°F (2023) | 53.1°F (2017) | 1.08 in (2004) |
| September 9 | 93.9°F (2016) | 52.0°F (1998) | 1.94 in (2012) |
| September 10 | 93.9°F (2007) | 51.1°F (1998) | 2.24 in (2023) |
| September 11 | 98.1°F (2007) | 53.1°F (2017) | 0.74 in (2022) |
| September 12 | 96.1°F (2007) | 50.0°F (1993) | 1.80 in (2020) |
| September 13 | 93.0°F (2019) | 50.0°F (1993) | 0.30 in (2024) |
| September 14 | 90.0°F (2000) | 48.9°F (2015) | 1.09 in (2024) |
| September 15 | 93.0°F (2010) | 48.9°F (2015) | 3.27 in (2018) |
| September 16 | 90.0°F (2005) | 50.0°F (2000) | 5.60 in (1999) |
| September 17 | 93.0°F (2005) | 46.9°F (2000) | 3.26 in (2024) |
| September 18 | 93.0°F (2005) | 46.9°F (2000) | 1.73 in (2004) |
| September 19 | 88.0°F (2016) | 51.1°F (2013) | 1.83 in (2003) |
| September 20 | 89.1°F (2010) | 50.0°F (2004) | 1.29 in (2016) |
| September 21 | 93.9°F (1997) | 48.0°F (2006) | 1.50 in (2005) |
| September 22 | 91.0°F (2022) | 46.0°F (2020) | 1.38 in (1999) |
| September 23 | 93.9°F (2022) | 46.0°F (1999) | 1.90 in (1995) |
| September 24 | 95.0°F (2010) | 45.0°F (1999) | 1.65 in (2023) |
| September 25 | 93.0°F (2010) | 48.0°F (2012) | 1.57 in (1997) |
| September 26 | 93.9°F (2010) | 43.0°F (2001) | 1.59 in (2000) |
| September 27 | 93.0°F (2019) | 44.1°F (2001) | 1.93 in (2010) |
| September 28 | 91.9°F (1998) | 44.1°F (1993) | 2.31 in (1999) |
| September 29 | 93.9°F (2017) | 44.1°F (1993) | 1.17 in (2012) |
| September 30 | 95.0°F (2019) | 45.0°F (1993) | 2.84 in (2010) |