January weather in St. Charles, MO
The average temperature in St. Charles in January is 30.7°F (21.9°F–39.5°F). Average precipitation: 2.74 inches. Average snowfall is 4.3 inches.
January is a winter month in St. Charles, and is cooler than the annual average of 55.5°F. Daily temperatures swing about 17.6°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 9h 34m. For travel, January is cold.
Avg High
39.5°F
Avg Low
21.9°F
Precipitation
2.74 in
Snow
4.3 in
January records in St. Charles
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 69.1°F (2005) | -9.9°F (1974) | 1.85 in (1948) |
| January 2 | 70.0°F (1965) | -8.0°F (1974) | 1.64 in (1999) |
| January 3 | 72.0°F (1939) | -5.1°F (1904) | 2.14 in (1897) |
| January 4 | 71.1°F (2023) | -5.1°F (1919) | 3.94 in (1950) |
| January 5 | 71.1°F (1997) | -13.0°F (1924) | 2.66 in (2005) |
| January 6 | 72.0°F (1907) | -9.0°F (2014) | 1.13 in (1962) |
| January 7 | 72.0°F (2008) | -22.0°F (1912) | 1.05 in (1913) |
| January 8 | 73.9°F (1965) | -7.1°F (1968) | 1.91 in (2008) |
| January 9 | 82.0°F (2006) | -5.1°F (1970) | 1.56 in (1998) |
| January 10 | 64.0°F (2002) | -9.9°F (1962) | 1.18 in (1905) |
| January 11 | 75.0°F (1911) | -18.9°F (1982) | 2.90 in (2020) |
| January 12 | 69.1°F (2017) | -20.0°F (1918) | 1.91 in (1916) |
| January 13 | 69.1°F (2005) | -18.0°F (1912) | 1.80 in (2005) |
| January 14 | 72.0°F (1928) | -8.0°F (2024) | 2.00 in (1995) |
| January 15 | 69.1°F (1901) | -13.0°F (1979) | 1.09 in (1937) |
| January 16 | 69.1°F (1990) | -15.0°F (1977) | 1.41 in (1907) |
| January 17 | 73.9°F (1990) | -17.0°F (1977) | 0.70 in (1953) |
| January 18 | 69.1°F (1951) | -20.0°F (1930) | 1.77 in (2020) |
| January 19 | 73.9°F (1952) | -14.1°F (1940) | 1.57 in (1949) |
| January 20 | 73.0°F (1906) | -9.9°F (1940) | 2.40 in (1913) |
| January 21 | 70.0°F (1906) | -9.9°F (1970) | 1.89 in (1974) |
| January 22 | 73.9°F (1986) | -16.1°F (1930) | 0.93 in (1896) |
| January 23 | 77.0°F (1909) | -11.9°F (1930) | 1.00 in (1906) |
| January 24 | 75.9°F (1950) | -14.1°F (1894) | 2.00 in (1914) |
| January 25 | 75.0°F (1950) | -17.0°F (1894) | 1.00 in (1904) |
| January 26 | 71.1°F (1911) | -25.1°F (1894) | 1.46 in (1967) |
| January 27 | 69.1°F (1914) | -15.0°F (1936) | 0.70 in (1911) |
| January 28 | 68.0°F (2002) | -13.0°F (1936) | 0.96 in (1909) |
| January 29 | 73.9°F (1970) | -9.9°F (1966) | 1.09 in (1916) |
| January 30 | 68.0°F (2008) | -9.0°F (1936) | 2.37 in (1916) |
| January 31 | 66.0°F (1911) | -9.0°F (1936) | 1.86 in (2002) |