September weather in St. James, MO
The average temperature in St. James in September is 69.6°F (58.9°F–80.4°F). Average precipitation: 4.00 inches.
September is a fall month in St. James, and is warmer than the annual average of 56.3°F. Daily temperatures swing about 21.5°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 14m. For travel, September is a comfortable month to visit.
Avg High
80.4°F
Avg Low
58.9°F
Precipitation
4.00 in
Daylight
12h 14m
September records in St. James
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 102.0°F (1913) | 45.0°F (1915) | 2.91 in (1981) |
| September 2 | 102.0°F (1913) | 46.0°F (1949) | 4.30 in (1936) |
| September 3 | 102.0°F (1913) | 44.1°F (1974) | 2.90 in (1993) |
| September 4 | 105.1°F (1913) | 45.0°F (1974) | 4.41 in (2008) |
| September 5 | 104.0°F (1954) | 46.0°F (1950) | 1.51 in (1965) |
| September 6 | 102.0°F (1925) | 45.0°F (1950) | 1.09 in (1942) |
| September 7 | 102.9°F (1947) | 44.1°F (1988) | 2.00 in (1930) |
| September 8 | 104.0°F (1947) | 45.0°F (1956) | 2.77 in (2007) |
| September 9 | 100.9°F (1925) | 46.0°F (1943) | 2.15 in (1984) |
| September 10 | 98.1°F (1947) | 46.0°F (1924) | 2.05 in (2010) |
| September 11 | 95.0°F (1919) | 39.0°F (1940) | 1.98 in (1920) |
| September 12 | 97.0°F (1939) | 41.0°F (1917) | 1.84 in (1949) |
| September 13 | 100.0°F (1956) | 43.0°F (2014) | 2.14 in (1903) |
| September 14 | 98.1°F (1939) | 43.0°F (2014) | 4.04 in (2008) |
| September 15 | 99.0°F (1971) | 42.1°F (1916) | 4.01 in (1914) |
| September 16 | 100.0°F (1956) | 39.0°F (1916) | 1.59 in (1911) |
| September 17 | 98.1°F (1954) | 41.0°F (1918) | 4.40 in (1905) |
| September 18 | 100.0°F (1953) | 42.1°F (1918) | 1.16 in (1986) |
| September 19 | 98.1°F (1925) | 37.9°F (1991) | 2.97 in (1905) |
| September 20 | 100.9°F (1954) | 36.0°F (1918) | 2.18 in (2009) |
| September 21 | 96.1°F (2022) | 37.0°F (1918) | 1.88 in (1925) |
| September 22 | 95.0°F (1937) | 34.0°F (1995) | 2.32 in (1945) |
| September 23 | 96.1°F (1956) | 33.1°F (1995) | 4.60 in (1970) |
| September 24 | 93.0°F (1939) | 34.0°F (1942) | 3.49 in (1941) |
| September 25 | 96.1°F (1933) | 33.1°F (1950) | 2.33 in (1993) |
| September 26 | 90.0°F (1916) | 36.0°F (1928) | 0.98 in (1935) |
| September 27 | 91.9°F (1953) | 33.1°F (1942) | 2.64 in (1920) |
| September 28 | 99.0°F (1956) | 32.0°F (1942) | 2.32 in (2020) |
| September 29 | 100.9°F (1953) | 33.1°F (1916) | 1.71 in (1906) |
| September 30 | 100.9°F (1953) | 33.1°F (1916) | 2.81 in (1986) |