September weather in Hannibal, MO
The average temperature in Hannibal in September is 67.4°F (56.9°F–77.9°F). Average precipitation: 3.53 inches.
September is a fall month in Hannibal, and is warmer than the annual average of 53°F. Daily temperatures swing about 21°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 15m. For travel, September is one of the best months of the year to visit.
Avg High
77.9°F
Avg Low
56.9°F
Precipitation
3.53 in
Daylight
12h 15m
September records in Hannibal
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.9°F (2011) | 45.0°F (1949) | 4.89 in (2003) |
| September 2 | 102.0°F (2011) | 46.9°F (1946) | 4.10 in (1941) |
| September 3 | 100.0°F (2011) | 44.1°F (1974) | 1.70 in (1993) |
| September 4 | 100.9°F (1954) | 42.1°F (1974) | 1.95 in (1965) |
| September 5 | 100.0°F (1954) | 46.0°F (1962) | 2.19 in (2008) |
| September 6 | 100.0°F (1936) | 46.0°F (1988) | 2.55 in (2018) |
| September 7 | 98.1°F (1960) | 45.0°F (1956) | 1.47 in (1996) |
| September 8 | 98.1°F (1933) | 42.1°F (1986) | 1.68 in (2018) |
| September 9 | 98.1°F (1933) | 35.1°F (1999) | 2.82 in (1989) |
| September 10 | 98.1°F (1933) | 41.0°F (1999) | 5.07 in (2014) |
| September 11 | 100.9°F (1936) | 39.9°F (1940) | 2.63 in (2010) |
| September 12 | 96.1°F (1956) | 44.1°F (1940) | 2.97 in (1949) |
| September 13 | 98.1°F (1956) | 39.9°F (2014) | 3.76 in (1961) |
| September 14 | 97.0°F (1939) | 39.9°F (2014) | 3.57 in (2008) |
| September 15 | 97.0°F (1939) | 37.0°F (1999) | 0.87 in (1965) |
| September 16 | 96.1°F (1954) | 39.9°F (1937) | 1.99 in (1965) |
| September 17 | 96.1°F (1954) | 39.0°F (1943) | 1.52 in (1968) |
| September 18 | 96.1°F (1933) | 39.9°F (1973) | 1.35 in (2022) |
| September 19 | 93.9°F (1940) | 36.0°F (1991) | 2.66 in (2010) |
| September 20 | 95.0°F (1940) | 37.0°F (1991) | 1.08 in (1967) |
| September 21 | 93.9°F (2017) | 37.0°F (1983) | 1.80 in (1947) |
| September 22 | 96.1°F (1937) | 34.0°F (1995) | 3.08 in (1970) |
| September 23 | 91.9°F (1988) | 35.1°F (1983) | 2.04 in (1970) |
| September 24 | 93.9°F (1933) | 34.0°F (1942) | 2.97 in (1986) |
| September 25 | 91.0°F (2017) | 37.9°F (1942) | 1.79 in (1971) |
| September 26 | 93.0°F (1956) | 33.1°F (1984) | 1.60 in (1976) |
| September 27 | 89.1°F (1954) | 33.1°F (1942) | 2.01 in (1936) |
| September 28 | 98.1°F (1953) | 30.0°F (1942) | 1.26 in (1945) |
| September 29 | 100.0°F (1953) | 30.9°F (2003) | 1.43 in (1934) |
| September 30 | 93.0°F (1952) | 35.1°F (1939) | 1.11 in (1962) |