December weather in Irondale, MO
The average temperature in Irondale in December is 34.9°F (26.4°F–43.4°F). Average precipitation: 2.97 inches. Average snowfall is 2.4 inches.
December is a winter month in Irondale, and is cooler than the annual average of 54.8°F. Daily temperatures swing about 17°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 9h 23m. For travel, December is cold.
Avg High
43.4°F
Avg Low
26.4°F
Precipitation
2.97 in
Snow
2.4 in
December records in Irondale
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 69.1°F (2014) | 8.1°F (1893) | 3.03 in (2006) |
| December 2 | 68.0°F (1995) | 9.0°F (1985) | 1.30 in (1950) |
| December 3 | 73.9°F (2021) | 1.0°F (1895) | 0.33 in (1897) |
| December 4 | 77.0°F (2021) | -4.0°F (1893) | 1.23 in (1983) |
| December 5 | 68.0°F (2001) | -4.0°F (1895) | 0.41 in (1996) |
| December 6 | 72.0°F (1998) | 7.0°F (2002) | 2.05 in (2014) |
| December 7 | 69.1°F (1998) | 1.9°F (2013) | 1.53 in (1987) |
| December 8 | 66.0°F (1980) | 1.9°F (2013) | 1.60 in (1901) |
| December 9 | 61.0°F (2015) | 3.9°F (1898) | 0.67 in (2009) |
| December 10 | 69.1°F (2020) | 0.0°F (1995) | 1.53 in (1897) |
| December 11 | 72.0°F (2020) | 1.9°F (2000) | 1.23 in (1983) |
| December 12 | 66.9°F (1984) | 3.9°F (1989) | 0.76 in (2020) |
| December 13 | 71.1°F (1980) | 1.9°F (2010) | 2.70 in (1901) |
| December 14 | 63.0°F (1984) | -4.0°F (1901) | 1.52 in (1987) |
| December 15 | 66.0°F (1995) | -15.0°F (1901) | 1.73 in (2018) |
| December 16 | 69.1°F (1984) | -9.9°F (1989) | 2.30 in (2001) |
| December 17 | 69.1°F (1984) | -11.0°F (1989) | 1.53 in (1897) |
| December 18 | 64.0°F (2006) | -15.0°F (1901) | 2.32 in (2021) |
| December 19 | 61.0°F (1997) | -7.1°F (1981) | 2.90 in (1995) |
| December 20 | 64.9°F (1997) | -26.0°F (1901) | 0.86 in (2012) |
| December 21 | 66.0°F (1894) | -11.9°F (1901) | 2.20 in (1949) |
| December 22 | 64.9°F (2015) | -20.0°F (1989) | 0.94 in (1988) |
| December 23 | 66.9°F (1893) | -20.0°F (1989) | 1.20 in (1981) |
| December 24 | 64.0°F (1901) | -18.9°F (1989) | 1.49 in (2015) |
| December 25 | 69.1°F (2021) | -14.1°F (1983) | 1.45 in (2009) |
| December 26 | 66.9°F (2019) | -2.0°F (1899) | 1.25 in (1987) |
| December 27 | 66.0°F (2015) | 0.0°F (2017) | 2.86 in (2015) |
| December 28 | 72.0°F (1984) | -5.1°F (1894) | 2.57 in (2015) |
| December 29 | 69.1°F (1984) | -2.9°F (1983) | 1.57 in (2015) |
| December 30 | 64.9°F (2002) | -5.1°F (1899) | 2.15 in (1984) |
| December 31 | 64.9°F (2008) | -9.0°F (2000) | 1.65 in (1947) |