September weather in Cottage Grove, TN
The average temperature in Cottage Grove in September is 70.6°F (58.9°F–82.3°F). Average precipitation: 3.91 inches.
September is a fall month in Cottage Grove, and is warmer than the annual average of 58°F. Daily temperatures swing about 23.4°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
82.3°F
Avg Low
58.9°F
Precipitation
3.91 in
Daylight
12h 13m
September records in Cottage Grove
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 102.9°F (1953) | 48.0°F (1967) | 2.56 in (2017) |
| September 2 | 104.0°F (1953) | 46.0°F (1949) | 2.00 in (1993) |
| September 3 | 102.0°F (1925) | 46.9°F (1949) | 3.20 in (1950) |
| September 4 | 104.0°F (1925) | 46.0°F (1952) | 0.91 in (1923) |
| September 5 | 106.0°F (1925) | 46.0°F (1974) | 2.89 in (1949) |
| September 6 | 106.0°F (1954) | 37.0°F (1986) | 1.71 in (1943) |
| September 7 | 105.1°F (1925) | 34.0°F (1986) | 1.63 in (2009) |
| September 8 | 104.0°F (1925) | 43.0°F (1988) | 1.23 in (1950) |
| September 9 | 100.0°F (1925) | 48.0°F (1956) | 1.86 in (1947) |
| September 10 | 99.0°F (1980) | 46.0°F (1956) | 1.30 in (1960) |
| September 11 | 97.0°F (1964) | 42.1°F (1940) | 2.69 in (1960) |
| September 12 | 99.0°F (1983) | 41.0°F (1940) | 1.93 in (1965) |
| September 13 | 97.0°F (1980) | 39.9°F (1940) | 3.18 in (1983) |
| September 14 | 99.0°F (1980) | 37.0°F (1964) | 3.68 in (1979) |
| September 15 | 96.1°F (1980) | 37.9°F (1964) | 1.59 in (2011) |
| September 16 | 96.1°F (1956) | 39.0°F (1961) | 2.43 in (1962) |
| September 17 | 100.0°F (1980) | 39.9°F (1961) | 1.75 in (1988) |
| September 18 | 100.0°F (1953) | 45.0°F (1951) | 1.45 in (1968) |
| September 19 | 100.9°F (1953) | 42.1°F (1956) | 2.63 in (2011) |
| September 20 | 97.0°F (1940) | 41.0°F (1991) | 1.37 in (1923) |
| September 21 | 97.0°F (1955) | 39.0°F (1962) | 2.66 in (1979) |
| September 22 | 99.0°F (2010) | 37.9°F (1983) | 4.20 in (1990) |
| September 23 | 96.1°F (1941) | 37.9°F (1974) | 1.98 in (2006) |
| September 24 | 96.1°F (2010) | 35.1°F (1983) | 1.12 in (1955) |
| September 25 | 93.0°F (1959) | 35.1°F (1965) | 3.10 in (1977) |
| September 26 | 91.9°F (1923) | 36.0°F (1965) | 1.55 in (1985) |
| September 27 | 93.0°F (1923) | 37.0°F (2001) | 7.76 in (2002) |
| September 28 | 95.0°F (1953) | 24.1°F (1940) | 2.88 in (2024) |
| September 29 | 97.0°F (1953) | 35.1°F (1942) | 1.14 in (1964) |
| September 30 | 100.9°F (1953) | 35.1°F (1949) | 1.95 in (1955) |