September weather in Boone, NC
The average temperature in Boone in September is 61.3°F (50.3°F–72.2°F). Average precipitation: 5.73 inches.
September is a fall month in Boone, and is warmer than the annual average of 50.2°F. Daily temperatures swing about 21.9°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 12h 13m. For travel, September is a wet month.
Avg High
72.2°F
Avg Low
50.3°F
Precipitation
5.73 in
Daylight
12h 13m
September records in Boone
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 84.0°F (2010) | 39.9°F (1986) | 2.10 in (2021) |
| September 2 | 82.9°F (2010) | 39.9°F (1999) | 1.47 in (1986) |
| September 3 | 86.0°F (2011) | 42.1°F (1999) | 1.08 in (2004) |
| September 4 | 82.9°F (2020) | 37.0°F (1997) | 0.89 in (1988) |
| September 5 | 84.0°F (2019) | 36.0°F (1997) | 0.87 in (1996) |
| September 6 | 86.0°F (2023) | 36.0°F (1997) | 4.30 in (2011) |
| September 7 | 86.0°F (1998) | 42.1°F (1988) | 1.29 in (1987) |
| September 8 | 84.0°F (1998) | 39.9°F (1988) | 7.64 in (2004) |
| September 9 | 82.9°F (1998) | 37.0°F (2025) | 2.00 in (2004) |
| September 10 | 84.0°F (2019) | 37.0°F (2025) | 1.32 in (2009) |
| September 11 | 82.9°F (2002) | 37.9°F (2025) | 2.30 in (1997) |
| September 12 | 82.9°F (2019) | 39.9°F (1999) | 3.13 in (2017) |
| September 13 | 84.9°F (2019) | 44.1°F (2002) | 1.72 in (2020) |
| September 14 | 84.9°F (2019) | 37.9°F (2015) | 1.70 in (1991) |
| September 15 | 84.0°F (1998) | 33.1°F (1985) | 1.42 in (2007) |
| September 16 | 84.0°F (1998) | 36.0°F (2001) | 1.06 in (1981) |
| September 17 | 84.0°F (2019) | 33.1°F (2000) | 5.00 in (2018) |
| September 18 | 84.0°F (2019) | 32.0°F (2000) | 3.23 in (2012) |
| September 19 | 79.0°F (1998) | 32.0°F (2000) | 1.20 in (2012) |
| September 20 | 81.0°F (2010) | 36.0°F (2020) | 0.97 in (2009) |
| September 21 | 81.0°F (2005) | 34.0°F (2020) | 1.77 in (2015) |
| September 22 | 82.9°F (2022) | 30.9°F (1991) | 1.12 in (2021) |
| September 23 | 82.0°F (2010) | 34.0°F (1983) | 2.40 in (1989) |
| September 24 | 82.9°F (2005) | 30.0°F (1983) | 1.40 in (1997) |
| September 25 | 82.9°F (2016) | 32.0°F (1983) | 2.53 in (2011) |
| September 26 | 84.0°F (1986) | 34.0°F (2012) | 2.00 in (2015) |
| September 27 | 80.1°F (1998) | 35.1°F (2000) | 7.65 in (2024) |
| September 28 | 81.0°F (1998) | 32.0°F (2022) | 7.07 in (2024) |
| September 29 | 82.0°F (1998) | 32.0°F (2022) | 1.40 in (1996) |
| September 30 | 81.0°F (2019) | 32.0°F (1992) | 1.56 in (2015) |