September weather in Watertown, TN
The average temperature in Watertown in September is 71.6°F (59.6°F–83.6°F). Average precipitation: 3.85 inches.
September is a fall month in Watertown, and is warmer than the annual average of 59.1°F. Daily temperatures swing about 24°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 12h 13m. For travel, September is a comfortable month to visit.
Avg High
83.6°F
Avg Low
59.6°F
Precipitation
3.85 in
Daylight
12h 13m
September records in Watertown
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.0°F (1924) | 50.0°F (1967) | 2.53 in (2017) |
| September 2 | 100.0°F (1913) | 44.1°F (1987) | 1.23 in (1916) |
| September 3 | 102.0°F (1925) | 50.0°F (1995) | 2.40 in (2014) |
| September 4 | 107.1°F (1925) | 48.0°F (1997) | 5.75 in (1986) |
| September 5 | 107.1°F (1925) | 39.9°F (1997) | 3.25 in (2011) |
| September 6 | 108.0°F (1925) | 39.9°F (1924) | 1.95 in (2012) |
| September 7 | 109.0°F (1925) | 42.1°F (1988) | 0.82 in (2018) |
| September 8 | 102.9°F (1925) | 45.0°F (1994) | 0.60 in (1920) |
| September 9 | 105.1°F (1925) | 41.0°F (1998) | 2.92 in (1974) |
| September 10 | 98.1°F (1931) | 39.0°F (1924) | 1.49 in (1959) |
| September 11 | 99.0°F (1925) | 39.0°F (1976) | 1.98 in (1955) |
| September 12 | 98.1°F (1983) | 39.0°F (1976) | 1.43 in (2009) |
| September 13 | 95.0°F (1925) | 43.0°F (1975) | 2.70 in (2020) |
| September 14 | 99.0°F (1998) | 36.0°F (1975) | 6.51 in (1979) |
| September 15 | 98.1°F (2001) | 37.0°F (1975) | 1.33 in (1977) |
| September 16 | 96.1°F (1991) | 37.0°F (1916) | 2.50 in (2009) |
| September 17 | 98.1°F (1931) | 39.9°F (1961) | 4.20 in (2009) |
| September 18 | 100.0°F (1931) | 41.0°F (1961) | 1.92 in (2012) |
| September 19 | 102.0°F (1925) | 37.9°F (1916) | 3.04 in (2021) |
| September 20 | 100.0°F (1931) | 39.0°F (1916) | 2.02 in (2001) |
| September 21 | 100.0°F (1931) | 37.0°F (1918) | 2.85 in (1954) |
| September 22 | 100.0°F (1931) | 34.0°F (1983) | 2.19 in (1979) |
| September 23 | 99.0°F (1931) | 35.1°F (1983) | 3.03 in (1989) |
| September 24 | 95.0°F (1961) | 33.1°F (1983) | 2.42 in (1975) |
| September 25 | 99.0°F (1931) | 37.0°F (1990) | 1.61 in (1997) |
| September 26 | 95.0°F (1925) | 36.0°F (2001) | 2.13 in (1985) |
| September 27 | 95.0°F (1998) | 37.0°F (1991) | 2.15 in (1917) |
| September 28 | 97.0°F (1998) | 37.0°F (1991) | 2.30 in (1979) |
| September 29 | 95.0°F (1986) | 34.0°F (1967) | 1.88 in (1964) |
| September 30 | 96.1°F (2019) | 36.0°F (1967) | 1.95 in (1915) |