January weather in Wheaton, MO
The average temperature in Wheaton in January is 34.0°F (23.9°F–44.1°F). Average precipitation: 2.47 inches. Average snowfall is 2.4 inches.
January is a winter month in Wheaton, and is cooler than the annual average of 56.8°F. Daily temperatures swing about 20.2°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 9h 45m. For travel, January is cold.
Avg High
44.1°F
Avg Low
23.9°F
Precipitation
2.47 in
Snow
2.4 in
January records in Wheaton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 69.1°F (2005) | -5.1°F (1974) | 1.06 in (2021) |
| January 2 | 70.0°F (2006) | -4.0°F (1979) | 0.81 in (1999) |
| January 3 | 73.9°F (2023) | 3.9°F (2014) | 1.13 in (2023) |
| January 4 | 73.0°F (2004) | -0.9°F (1999) | 1.04 in (1998) |
| January 5 | 61.0°F (1984) | -2.0°F (2010) | 3.32 in (2005) |
| January 6 | 68.0°F (2008) | -9.9°F (2014) | 0.61 in (1991) |
| January 7 | 70.0°F (2008) | -9.0°F (2014) | 0.86 in (2021) |
| January 8 | 68.0°F (2026) | -9.9°F (1979) | 4.86 in (2008) |
| January 9 | 66.9°F (2006) | -5.1°F (1977) | 0.85 in (1993) |
| January 10 | 70.0°F (1990) | -13.0°F (1982) | 0.94 in (1991) |
| January 11 | 69.1°F (1995) | -9.0°F (1977) | 2.96 in (2020) |
| January 12 | 71.1°F (2017) | -2.9°F (1997) | 1.73 in (2019) |
| January 13 | 69.1°F (1983) | -6.0°F (1997) | 2.12 in (2007) |
| January 14 | 68.0°F (2026) | -9.9°F (1979) | 0.48 in (2017) |
| January 15 | 69.1°F (1996) | -5.1°F (1979) | 1.46 in (2007) |
| January 16 | 64.9°F (2006) | -8.0°F (2018) | 1.10 in (1990) |
| January 17 | 66.9°F (2012) | -7.1°F (2018) | 1.81 in (1990) |
| January 18 | 66.0°F (1974) | -6.0°F (1984) | 2.48 in (1996) |
| January 19 | 63.0°F (2006) | -7.1°F (1984) | 2.41 in (1990) |
| January 20 | 73.9°F (1986) | -16.1°F (1985) | 1.12 in (1973) |
| January 21 | 66.0°F (2005) | -6.0°F (1984) | 0.66 in (1973) |
| January 22 | 69.1°F (2018) | 3.9°F (2025) | 1.47 in (2018) |
| January 23 | 69.1°F (2009) | 1.0°F (2003) | 0.49 in (2024) |
| January 24 | 71.1°F (2002) | 1.9°F (2003) | 0.45 in (2010) |
| January 25 | 69.1°F (2017) | 1.9°F (2026) | 2.07 in (2021) |
| January 26 | 68.0°F (2005) | -9.9°F (2026) | 0.64 in (1998) |
| January 27 | 68.0°F (1975) | 0.0°F (2026) | 0.51 in (2009) |
| January 28 | 66.0°F (1975) | -0.9°F (1977) | 0.50 in (2009) |
| January 29 | 71.1°F (2002) | -5.1°F (1979) | 1.41 in (2001) |
| January 30 | 72.0°F (2011) | 6.1°F (1985) | 2.66 in (1982) |
| January 31 | 66.9°F (2016) | -6.0°F (1979) | 1.08 in (2002) |