September weather in Cynthiana, KY
The average temperature in Cynthiana in September is 67.9°F (55.3°F–80.4°F). Average precipitation: 3.53 inches.
September is a fall month in Cynthiana, and is warmer than the annual average of 54.8°F. Daily temperatures swing about 25.1°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 12h 14m. For travel, September is a comfortable month to visit.
Avg High
80.4°F
Avg Low
55.3°F
Precipitation
3.53 in
Daylight
12h 14m
September records in Cynthiana
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 97.0°F (1983) | 46.0°F (1987) | 4.88 in (1965) |
| September 2 | 97.0°F (2011) | 45.0°F (1987) | 1.73 in (2003) |
| September 3 | 98.1°F (1984) | 45.0°F (1987) | 2.80 in (1922) |
| September 4 | 98.1°F (2011) | 44.1°F (1982) | 1.35 in (1933) |
| September 5 | 93.9°F (2015) | 43.0°F (1982) | 2.20 in (1991) |
| September 6 | 97.0°F (2007) | 43.0°F (1982) | 1.10 in (1921) |
| September 7 | 97.0°F (2002) | 41.0°F (1988) | 0.71 in (2024) |
| September 8 | 98.1°F (2002) | 45.0°F (2024) | 2.10 in (1917) |
| September 9 | 98.1°F (2002) | 43.0°F (2024) | 3.49 in (2018) |
| September 10 | 96.1°F (2002) | 41.0°F (1987) | 1.28 in (1960) |
| September 11 | 100.0°F (1983) | 44.1°F (1998) | 2.46 in (2000) |
| September 12 | 98.1°F (1983) | 45.0°F (1980) | 1.60 in (2006) |
| September 13 | 93.9°F (1999) | 45.0°F (1985) | 1.88 in (1929) |
| September 14 | 97.0°F (1984) | 39.9°F (1985) | 3.35 in (1979) |
| September 15 | 93.9°F (1998) | 41.0°F (1985) | 1.71 in (1956) |
| September 16 | 91.0°F (1991) | 37.9°F (1984) | 1.42 in (1956) |
| September 17 | 93.0°F (2016) | 41.0°F (1985) | 1.35 in (1989) |
| September 18 | 90.0°F (2005) | 36.0°F (1989) | 0.97 in (1942) |
| September 19 | 93.0°F (1983) | 36.0°F (1989) | 0.90 in (1949) |
| September 20 | 93.0°F (2025) | 39.9°F (1982) | 3.55 in (1954) |
| September 21 | 93.0°F (2024) | 39.9°F (1982) | 3.30 in (1924) |
| September 22 | 93.0°F (1984) | 36.0°F (1982) | 4.00 in (1979) |
| September 23 | 93.9°F (2007) | 33.1°F (1982) | 1.15 in (1989) |
| September 24 | 95.0°F (2007) | 33.1°F (1983) | 3.82 in (2018) |
| September 25 | 93.0°F (2007) | 34.0°F (1981) | 2.34 in (2018) |
| September 26 | 89.1°F (1986) | 37.0°F (1985) | 1.99 in (2002) |
| September 27 | 91.9°F (1986) | 37.9°F (1982) | 1.87 in (1970) |
| September 28 | 93.0°F (2019) | 37.0°F (1991) | 2.08 in (1996) |
| September 29 | 93.0°F (2019) | 35.1°F (1981) | 1.39 in (1964) |
| September 30 | 93.9°F (2019) | 35.1°F (1981) | 3.16 in (1955) |