December weather in Oreana, IL
The average temperature in Oreana in December is 32.4°F (25.2°F–39.7°F). Average precipitation: 2.12 inches.
December is a winter month in Oreana, and is cooler than the annual average of 53.1°F. Daily temperatures swing about 14.5°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 9h 11m. For travel, December is cold.
Avg High
39.7°F
Avg Low
25.2°F
Precipitation
2.12 in
Daylight
9h 11m
December records in Oreana
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 63.0°F (2012) | 12.0°F (2002) | 1.10 in (2023) |
| December 2 | 66.9°F (2012) | 14.2°F (2006) | 0.42 in (2007) |
| December 3 | 72.0°F (2012) | 14.2°F (2006) | 0.07 in (2023) |
| December 4 | 66.9°F (2001) | 1.0°F (2025) | 0.27 in (2012) |
| December 5 | 66.9°F (2001) | -0.9°F (2025) | 0.57 in (2014) |
| December 6 | 54.0°F (2004) | 7.0°F (2005) | 0.23 in (2004) |
| December 7 | 57.9°F (2023) | 1.0°F (2005) | 0.97 in (2004) |
| December 8 | 61.0°F (2024) | 4.1°F (2006) | 0.85 in (2009) |
| December 9 | 59.0°F (2020) | 7.0°F (2005) | 0.62 in (2008) |
| December 10 | 64.9°F (2021) | 6.3°F (2013) | 0.56 in (2021) |
| December 11 | 62.1°F (2021) | 6.3°F (2013) | 0.69 in (2000) |
| December 12 | 69.1°F (2015) | 1.9°F (2000) | 0.54 in (2001) |
| December 13 | 66.0°F (2015) | 1.0°F (2025) | 0.39 in (2009) |
| December 14 | 64.9°F (2015) | -14.1°F (2025) | 1.09 in (2022) |
| December 15 | 64.9°F (2021) | -11.9°F (2025) | 0.33 in (2012) |
| December 16 | 64.9°F (2021) | 6.1°F (2000) | 0.70 in (2023) |
| December 17 | 60.1°F (2006) | 1.9°F (2000) | 0.34 in (2001) |
| December 18 | 57.0°F (2002) | -0.8°F (2016) | 1.56 in (2002) |
| December 19 | 55.9°F (2002) | -1.8°F (2016) | 1.28 in (2008) |
| December 20 | 63.0°F (2013) | -2.9°F (2000) | 0.72 in (2012) |
| December 21 | 61.0°F (2015) | 1.2°F (2008) | 0.93 in (2013) |
| December 22 | 57.0°F (2006) | -7.8°F (2022) | 0.77 in (2003) |
| December 23 | 62.1°F (2015) | -8.9°F (2022) | 1.37 in (2015) |
| December 24 | 63.0°F (2021) | -4.0°F (2000) | 1.29 in (2009) |
| December 25 | 63.0°F (2019) | -6.0°F (2000) | 0.32 in (2023) |
| December 26 | 62.1°F (2019) | 2.1°F (2017) | 2.76 in (2015) |
| December 27 | 64.0°F (2008) | -1.8°F (2017) | 1.34 in (2008) |
| December 28 | 69.1°F (2025) | -2.0°F (2000) | 2.58 in (2015) |
| December 29 | 61.0°F (2006) | 7.2°F (2009) | 0.55 in (2024) |
| December 30 | 60.1°F (2002) | 1.2°F (2017) | 0.41 in (2022) |
| December 31 | 64.0°F (2004) | -3.8°F (2017) | 2.12 in (2018) |