September weather in Keytesville, MO
The average temperature in Keytesville in September is 68.0°F (55.9°F–80.0°F). Average precipitation: 3.73 inches.
September is a fall month in Keytesville, and is warmer than the annual average of 54°F. Daily temperatures swing about 24.1°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 12h 15m. For travel, September is one of the best months of the year to visit.
Avg High
80.0°F
Avg Low
55.9°F
Precipitation
3.73 in
Daylight
12h 15m
September records in Keytesville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.9°F (1953) | 44.1°F (1949) | 2.90 in (2003) |
| September 2 | 100.0°F (1984) | 45.0°F (1949) | 3.25 in (1982) |
| September 3 | 97.0°F (1960) | 42.1°F (1974) | 2.96 in (1961) |
| September 4 | 100.0°F (1947) | 39.0°F (1974) | 3.61 in (1991) |
| September 5 | 99.0°F (1954) | 44.1°F (1974) | 1.57 in (1994) |
| September 6 | 100.0°F (1959) | 35.1°F (1988) | 1.53 in (2018) |
| September 7 | 100.0°F (1947) | 39.9°F (1956) | 1.34 in (1969) |
| September 8 | 102.9°F (1947) | 34.0°F (1986) | 2.43 in (1962) |
| September 9 | 100.0°F (1947) | 44.1°F (1986) | 2.00 in (1989) |
| September 10 | 100.0°F (2013) | 39.9°F (1976) | 1.70 in (2014) |
| September 11 | 98.1°F (2013) | 42.1°F (1959) | 3.38 in (1983) |
| September 12 | 99.0°F (1956) | 37.9°F (1955) | 1.67 in (1977) |
| September 13 | 100.0°F (1956) | 37.9°F (2014) | 6.12 in (1961) |
| September 14 | 97.0°F (2025) | 37.0°F (1974) | 3.35 in (1998) |
| September 15 | 93.9°F (1948) | 37.0°F (2007) | 1.67 in (1982) |
| September 16 | 98.1°F (1956) | 37.0°F (2007) | 2.48 in (1991) |
| September 17 | 98.1°F (1953) | 41.0°F (1980) | 2.03 in (1964) |
| September 18 | 96.1°F (1953) | 39.0°F (1981) | 0.69 in (1991) |
| September 19 | 96.1°F (1947) | 35.1°F (1991) | 1.84 in (1966) |
| September 20 | 98.1°F (2022) | 35.1°F (1991) | 1.31 in (1967) |
| September 21 | 98.1°F (2022) | 36.0°F (1982) | 3.59 in (1947) |
| September 22 | 95.0°F (1956) | 33.1°F (1995) | 4.82 in (1970) |
| September 23 | 93.9°F (2005) | 30.9°F (1989) | 2.90 in (1993) |
| September 24 | 91.9°F (2007) | 27.0°F (1989) | 3.78 in (1986) |
| September 25 | 91.9°F (2017) | 28.0°F (1989) | 1.49 in (1971) |
| September 26 | 95.0°F (1956) | 30.0°F (1984) | 1.05 in (2007) |
| September 27 | 95.0°F (1956) | 28.9°F (1984) | 1.24 in (1955) |
| September 28 | 102.0°F (1953) | 34.0°F (1951) | 2.40 in (1999) |
| September 29 | 98.1°F (1953) | 28.0°F (1984) | 1.05 in (1999) |
| September 30 | 91.9°F (1952) | 25.0°F (1984) | 4.71 in (1986) |