December weather in Cary, IL
The average temperature in Cary in December is 27.6°F (19.3°F–35.9°F). Average precipitation: 1.94 inches. Average snowfall is 8.2 inches.
December is a winter month in Cary, and is cooler than the annual average of 48.6°F. Daily temperatures swing about 16.6°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 8h 56m. For travel, December is cold.
Avg High
35.9°F
Avg Low
19.3°F
Precipitation
1.94 in
Snow
8.2 in
December records in Cary
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 59.0°F (1998) | 10.9°F (2024) | 0.67 in (2015) |
| December 2 | 55.9°F (2012) | 7.0°F (2006) | 0.93 in (2007) |
| December 3 | 63.0°F (2012) | 1.9°F (2006) | 0.52 in (1978) |
| December 4 | 66.9°F (2012) | 0.0°F (2025) | 0.34 in (2011) |
| December 5 | 64.0°F (1998) | -2.9°F (2025) | 1.26 in (1999) |
| December 6 | 68.0°F (2001) | -6.0°F (2007) | 0.55 in (1950) |
| December 7 | 54.0°F (1998) | -6.0°F (2005) | 1.25 in (1998) |
| December 8 | 51.1°F (2023) | -5.1°F (2005) | 0.72 in (1980) |
| December 9 | 54.0°F (2023) | -6.0°F (1995) | 0.86 in (2009) |
| December 10 | 51.1°F (1999) | -9.0°F (2013) | 1.70 in (2003) |
| December 11 | 57.0°F (2015) | -2.9°F (1995) | 0.77 in (1949) |
| December 12 | 48.9°F (2015) | -7.1°F (2013) | 1.04 in (2020) |
| December 13 | 59.0°F (2015) | -13.0°F (2000) | 0.58 in (2001) |
| December 14 | 60.1°F (2015) | -4.0°F (2025) | 0.65 in (1948) |
| December 15 | 54.0°F (2011) | -6.0°F (2010) | 1.25 in (1987) |
| December 16 | 64.9°F (2021) | -2.9°F (2010) | 0.65 in (1992) |
| December 17 | 52.0°F (2006) | 1.9°F (2013) | 0.30 in (2008) |
| December 18 | 48.0°F (1997) | -6.0°F (2000) | 0.28 in (1949) |
| December 19 | 50.0°F (1998) | -16.1°F (2016) | 0.87 in (2008) |
| December 20 | 52.0°F (2018) | -8.0°F (2000) | 1.08 in (1949) |
| December 21 | 44.1°F (2015) | -8.0°F (2008) | 0.80 in (2012) |
| December 22 | 51.1°F (1994) | -11.9°F (2000) | 0.92 in (2006) |
| December 23 | 53.1°F (2019) | -11.9°F (2000) | 0.61 in (2023) |
| December 24 | 57.0°F (2015) | -9.9°F (2022) | 0.61 in (2015) |
| December 25 | 54.0°F (2019) | -18.9°F (2000) | 1.10 in (2009) |
| December 26 | 57.0°F (2019) | -15.0°F (2000) | 0.23 in (2023) |
| December 27 | 61.0°F (2019) | -11.9°F (2017) | 0.69 in (1988) |
| December 28 | 57.9°F (2008) | -9.0°F (2000) | 0.93 in (2008) |
| December 29 | 54.0°F (2019) | -2.9°F (2009) | 1.42 in (2015) |
| December 30 | 57.0°F (2022) | -9.0°F (2017) | 0.96 in (2020) |
| December 31 | 54.0°F (2004) | -7.1°F (2013) | 0.60 in (1992) |