December weather in Congerville, IL
The average temperature in Congerville in December is 30.7°F (22.8°F–38.6°F). Average precipitation: 2.04 inches. Average snowfall is 5.2 inches.
December is a winter month in Congerville, and is cooler than the annual average of 52.1°F. Daily temperatures swing about 15.8°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 9h 6m. For travel, December is cold.
Avg High
38.6°F
Avg Low
22.8°F
Precipitation
2.04 in
Snow
5.2 in
December records in Congerville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 60.1°F (2012) | 12.0°F (2002) | 1.47 in (2006) |
| December 2 | 61.0°F (2012) | 3.0°F (2006) | 0.30 in (1993) |
| December 3 | 69.1°F (2012) | 10.0°F (2024) | 0.98 in (1990) |
| December 4 | 70.0°F (2012) | 3.0°F (2006) | 0.41 in (2010) |
| December 5 | 72.0°F (1998) | -5.1°F (2025) | 1.52 in (1999) |
| December 6 | 66.9°F (2001) | 3.9°F (2005) | 0.38 in (2004) |
| December 7 | 54.0°F (1998) | -7.1°F (2005) | 1.59 in (1994) |
| December 8 | 59.0°F (2023) | -7.1°F (2005) | 0.09 in (2012) |
| December 9 | 61.0°F (2024) | 1.9°F (2006) | 0.84 in (2009) |
| December 10 | 57.0°F (2021) | -2.0°F (2013) | 0.53 in (2007) |
| December 11 | 61.0°F (2021) | 3.9°F (2009) | 1.26 in (2021) |
| December 12 | 57.9°F (2015) | -4.0°F (2000) | 0.72 in (2007) |
| December 13 | 66.9°F (2015) | -11.9°F (2000) | 0.50 in (2001) |
| December 14 | 62.1°F (2015) | -7.1°F (2025) | 1.12 in (2022) |
| December 15 | 57.9°F (2006) | -9.9°F (2025) | 1.63 in (2011) |
| December 16 | 66.9°F (2021) | 1.9°F (2008) | 0.91 in (1992) |
| December 17 | 57.0°F (2024) | 6.1°F (2008) | 0.31 in (1994) |
| December 18 | 55.9°F (2002) | -5.1°F (2000) | 0.76 in (2002) |
| December 19 | 55.9°F (1998) | -5.1°F (2016) | 0.94 in (2008) |
| December 20 | 55.9°F (1997) | -9.9°F (2000) | 0.82 in (2012) |
| December 21 | 52.0°F (2015) | -6.0°F (2008) | 0.88 in (2006) |
| December 22 | 59.0°F (2015) | -7.1°F (2000) | 0.51 in (2013) |
| December 23 | 55.9°F (2015) | -13.0°F (2022) | 0.60 in (2014) |
| December 24 | 60.1°F (2025) | -6.0°F (2000) | 1.45 in (1996) |
| December 25 | 61.0°F (2023) | -18.0°F (2000) | 0.50 in (2005) |
| December 26 | 64.9°F (2019) | -15.0°F (2000) | 0.41 in (2016) |
| December 27 | 64.9°F (2019) | -9.9°F (2017) | 1.24 in (2015) |
| December 28 | 62.1°F (2008) | -8.0°F (2000) | 0.54 in (2008) |
| December 29 | 63.0°F (2025) | -0.9°F (2009) | 1.52 in (1990) |
| December 30 | 60.1°F (2006) | -0.9°F (1998) | 0.65 in (1990) |
| December 31 | 61.0°F (2002) | -6.0°F (1998) | 1.59 in (2010) |