September weather in Gravois Mills, MO
The average temperature in Gravois Mills in September is 68.7°F (58.5°F–78.8°F). Average precipitation: 4.27 inches.
September is a fall month in Gravois Mills, and is warmer than the annual average of 55.8°F. Daily temperatures swing about 20.3°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
78.8°F
Avg Low
58.5°F
Precipitation
4.27 in
Daylight
12h 14m
September records in Gravois Mills
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 102.0°F (2000) | 39.9°F (1967) | 2.65 in (1936) |
| September 2 | 100.0°F (1954) | 45.0°F (1952) | 1.22 in (1991) |
| September 3 | 105.1°F (1939) | 43.0°F (1974) | 1.62 in (1993) |
| September 4 | 100.9°F (1954) | 37.9°F (1974) | 3.74 in (2008) |
| September 5 | 98.1°F (1936) | 44.1°F (1935) | 3.24 in (1994) |
| September 6 | 100.9°F (1936) | 42.1°F (1988) | 1.00 in (1905) |
| September 7 | 100.9°F (1936) | 36.0°F (1956) | 2.37 in (1969) |
| September 8 | 102.0°F (1939) | 39.9°F (1986) | 1.70 in (2016) |
| September 9 | 100.0°F (1939) | 46.9°F (1956) | 3.80 in (2016) |
| September 10 | 99.0°F (1938) | 42.1°F (1976) | 1.76 in (1992) |
| September 11 | 100.9°F (1936) | 39.0°F (1940) | 5.61 in (1975) |
| September 12 | 99.0°F (1936) | 37.9°F (1955) | 1.96 in (1934) |
| September 13 | 100.0°F (1936) | 39.9°F (1964) | 4.81 in (1961) |
| September 14 | 100.9°F (1939) | 39.9°F (1979) | 4.06 in (2008) |
| September 15 | 100.9°F (1939) | 37.0°F (1961) | 2.40 in (1905) |
| September 16 | 99.0°F (1939) | 37.9°F (1937) | 4.03 in (1969) |
| September 17 | 95.0°F (1933) | 41.0°F (1981) | 5.50 in (1905) |
| September 18 | 96.1°F (1933) | 37.9°F (1981) | 1.38 in (1986) |
| September 19 | 99.0°F (1954) | 35.1°F (1991) | 2.17 in (1975) |
| September 20 | 93.9°F (1935) | 34.0°F (1962) | 1.61 in (1992) |
| September 21 | 96.1°F (1935) | 35.1°F (1983) | 3.35 in (1968) |
| September 22 | 100.9°F (1937) | 30.9°F (1995) | 3.12 in (1970) |
| September 23 | 96.1°F (1935) | 33.1°F (1983) | 3.96 in (1933) |
| September 24 | 95.0°F (1938) | 30.9°F (1989) | 2.75 in (1993) |
| September 25 | 93.0°F (1939) | 35.1°F (2001) | 1.45 in (1993) |
| September 26 | 96.1°F (1938) | 35.1°F (1984) | 1.19 in (1959) |
| September 27 | 91.9°F (1956) | 34.0°F (1934) | 2.64 in (1936) |
| September 28 | 93.9°F (1939) | 30.9°F (1908) | 2.00 in (1906) |
| September 29 | 93.0°F (1952) | 33.1°F (1967) | 2.35 in (1934) |
| September 30 | 91.9°F (1938) | 30.0°F (1984) | 1.48 in (1986) |