September weather in Maryville, TN
The average temperature in Maryville in September is 71.8°F (61.1°F–82.5°F). Average precipitation: 3.49 inches.
September is a fall month in Maryville, and is warmer than the annual average of 59.5°F. Daily temperatures swing about 21.4°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
82.5°F
Avg Low
61.1°F
Precipitation
3.49 in
Daylight
12h 13m
September records in Maryville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.0°F (1951) | 50.0°F (1946) | 1.10 in (1982) |
| September 2 | 98.1°F (1953) | 48.0°F (1987) | 1.72 in (1986) |
| September 3 | 98.1°F (1925) | 50.0°F (1987) | 1.19 in (2013) |
| September 4 | 100.9°F (1954) | 51.1°F (1952) | 1.31 in (2025) |
| September 5 | 102.9°F (1954) | 50.0°F (2010) | 5.49 in (2011) |
| September 6 | 100.9°F (1925) | 46.9°F (1984) | 1.33 in (1981) |
| September 7 | 102.0°F (1925) | 46.9°F (1984) | 2.52 in (1977) |
| September 8 | 96.1°F (1925) | 46.0°F (1984) | 1.28 in (2008) |
| September 9 | 100.0°F (1925) | 46.0°F (1984) | 1.42 in (1968) |
| September 10 | 97.0°F (2019) | 48.0°F (1924) | 1.23 in (1960) |
| September 11 | 96.1°F (1925) | 46.9°F (1976) | 1.74 in (2010) |
| September 12 | 93.9°F (1931) | 45.0°F (1940) | 1.10 in (1987) |
| September 13 | 97.0°F (1998) | 46.9°F (1940) | 1.85 in (1957) |
| September 14 | 96.1°F (1998) | 45.0°F (1985) | 1.30 in (1945) |
| September 15 | 96.1°F (1927) | 41.0°F (1985) | 3.31 in (1989) |
| September 16 | 96.1°F (1927) | 43.0°F (1985) | 2.46 in (1962) |
| September 17 | 95.0°F (1927) | 45.0°F (1985) | 2.94 in (2012) |
| September 18 | 98.1°F (1931) | 46.0°F (1985) | 3.16 in (2012) |
| September 19 | 98.1°F (1925) | 43.0°F (1984) | 1.90 in (1969) |
| September 20 | 97.0°F (1925) | 45.0°F (1918) | 1.75 in (1932) |
| September 21 | 95.0°F (1931) | 42.1°F (1918) | 2.41 in (2002) |
| September 22 | 96.1°F (1931) | 37.9°F (1983) | 2.47 in (1924) |
| September 23 | 96.1°F (1931) | 39.9°F (1983) | 3.04 in (2006) |
| September 24 | 93.0°F (2007) | 37.0°F (1983) | 2.03 in (2020) |
| September 25 | 93.9°F (2016) | 39.9°F (1983) | 2.30 in (2024) |
| September 26 | 89.1°F (1933) | 41.0°F (2001) | 3.04 in (2009) |
| September 27 | 91.9°F (2019) | 42.1°F (1928) | 2.10 in (2018) |
| September 28 | 93.0°F (1939) | 37.0°F (1985) | 1.32 in (1967) |
| September 29 | 95.0°F (2019) | 37.0°F (1942) | 4.17 in (1944) |
| September 30 | 95.0°F (2019) | 36.0°F (1967) | 1.99 in (1915) |