September weather in Loudon, TN
The average temperature in Loudon in September is 71.9°F (60.2°F–83.5°F). Average precipitation: 4.25 inches.
September is a fall month in Loudon, and is warmer than the annual average of 59.1°F. Daily temperatures swing about 23.3°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 13m. For travel, September is a comfortable month to visit.
Avg High
83.5°F
Avg Low
60.2°F
Precipitation
4.25 in
Daylight
12h 13m
September records in Loudon
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 95.0°F (1998) | 52.0°F (1968) | 3.56 in (2021) |
| September 2 | 97.0°F (2011) | 52.0°F (1987) | 1.34 in (1982) |
| September 3 | 99.0°F (2011) | 53.1°F (1987) | 0.80 in (1986) |
| September 4 | 98.1°F (2011) | 54.0°F (2010) | 3.70 in (2003) |
| September 5 | 97.0°F (1975) | 51.1°F (1974) | 4.40 in (2011) |
| September 6 | 98.1°F (1998) | 52.0°F (1974) | 4.18 in (2011) |
| September 7 | 98.1°F (1998) | 48.9°F (2017) | 0.55 in (1975) |
| September 8 | 97.0°F (1998) | 52.0°F (1984) | 2.20 in (1977) |
| September 9 | 96.1°F (2016) | 48.9°F (2017) | 0.46 in (1987) |
| September 10 | 96.1°F (2016) | 48.9°F (1998) | 1.40 in (1973) |
| September 11 | 98.1°F (2002) | 42.1°F (1976) | 3.19 in (1978) |
| September 12 | 98.1°F (2002) | 26.1°F (2001) | 1.37 in (1965) |
| September 13 | 93.9°F (2019) | 46.0°F (1968) | 1.20 in (1990) |
| September 14 | 98.1°F (1998) | 48.0°F (1968) | 1.75 in (2020) |
| September 15 | 96.1°F (1998) | 45.0°F (1964) | 1.61 in (2007) |
| September 16 | 95.0°F (2019) | 46.9°F (1964) | 2.42 in (1993) |
| September 17 | 93.9°F (2016) | 46.0°F (1984) | 5.02 in (2004) |
| September 18 | 95.0°F (2016) | 42.1°F (1981) | 6.12 in (2012) |
| September 19 | 93.0°F (1998) | 43.0°F (1981) | 1.08 in (1968) |
| September 20 | 95.0°F (1997) | 42.1°F (1981) | 1.97 in (1969) |
| September 21 | 93.9°F (1997) | 43.0°F (1981) | 1.40 in (2002) |
| September 22 | 95.0°F (2010) | 37.9°F (1983) | 3.30 in (2002) |
| September 23 | 93.9°F (2024) | 39.0°F (1983) | 2.03 in (2003) |
| September 24 | 93.9°F (2007) | 37.0°F (1983) | 5.85 in (2006) |
| September 25 | 93.9°F (2016) | 39.0°F (1963) | 2.39 in (2020) |
| September 26 | 95.0°F (2016) | 41.0°F (2001) | 1.17 in (1989) |
| September 27 | 91.0°F (1986) | 43.0°F (1964) | 3.03 in (2009) |
| September 28 | 91.0°F (1986) | 42.1°F (1962) | 1.64 in (1967) |
| September 29 | 91.9°F (1986) | 42.1°F (1962) | 1.02 in (1989) |
| September 30 | 91.9°F (2019) | 33.1°F (1967) | 1.64 in (1972) |