October weather in St. Charles, MO
The average temperature in St. Charles in October is 57.3°F (45.7°F–68.8°F). Average precipitation: 3.50 inches.
October is a fall month in St. Charles, and is warmer than the annual average of 55.5°F. Daily temperatures swing about 23.1°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 10h 57m. For travel, October is a comfortable month to visit.
Avg High
68.8°F
Avg Low
45.7°F
Precipitation
3.50 in
Daylight
10h 57m
October records in St. Charles
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 93.9°F (1901) | 33.1°F (1958) | 1.61 in (1911) |
| October 2 | 97.0°F (1953) | 30.0°F (1974) | 1.63 in (1926) |
| October 3 | 93.9°F (1922) | 30.9°F (1974) | 1.92 in (1902) |
| October 4 | 91.9°F (1938) | 32.0°F (1935) | 3.39 in (1986) |
| October 5 | 93.0°F (1938) | 30.0°F (1979) | 3.61 in (1910) |
| October 6 | 93.9°F (1939) | 30.0°F (1979) | 1.83 in (1949) |
| October 7 | 95.0°F (1939) | 26.1°F (1952) | 1.88 in (1990) |
| October 8 | 93.9°F (1938) | 28.0°F (1987) | 2.19 in (1977) |
| October 9 | 91.9°F (1938) | 28.9°F (1915) | 4.01 in (2009) |
| October 10 | 93.0°F (1963) | 27.0°F (1979) | 1.66 in (2001) |
| October 11 | 91.9°F (1963) | 28.0°F (1964) | 1.20 in (1954) |
| October 12 | 89.1°F (1928) | 28.0°F (1909) | 3.19 in (1969) |
| October 13 | 91.0°F (1899) | 26.1°F (1909) | 2.14 in (1931) |
| October 14 | 93.0°F (1938) | 24.1°F (1979) | 1.97 in (1970) |
| October 15 | 91.9°F (1938) | 24.1°F (1979) | 1.50 in (1914) |
| October 16 | 91.0°F (1938) | 30.9°F (1969) | 1.32 in (1899) |
| October 17 | 90.0°F (1938) | 28.0°F (1966) | 1.72 in (2006) |
| October 18 | 89.1°F (1953) | 27.0°F (1948) | 6.21 in (1905) |
| October 19 | 90.0°F (1953) | 25.0°F (1972) | 1.75 in (2025) |
| October 20 | 88.0°F (1953) | 24.1°F (1972) | 2.47 in (1983) |
| October 21 | 86.0°F (1947) | 24.1°F (1982) | 1.07 in (1993) |
| October 22 | 88.0°F (1979) | 21.0°F (1982) | 1.59 in (1913) |
| October 23 | 93.0°F (1939) | 21.9°F (1982) | 2.72 in (2009) |
| October 24 | 88.0°F (1940) | 21.9°F (1982) | 2.01 in (1976) |
| October 25 | 89.1°F (1940) | 21.9°F (1942) | 2.19 in (1934) |
| October 26 | 88.0°F (1927) | 21.9°F (1942) | 2.65 in (2022) |
| October 27 | 89.1°F (1927) | 21.9°F (1914) | 2.00 in (1919) |
| October 28 | 89.1°F (1927) | 21.9°F (1925) | 1.34 in (1921) |
| October 29 | 89.1°F (1937) | 21.9°F (1910) | 1.73 in (1991) |
| October 30 | 91.0°F (1950) | 19.0°F (1925) | 2.98 in (1942) |
| October 31 | 93.0°F (1900) | 24.1°F (1923) | 1.23 in (1941) |