December weather in Lone Tree, CO
The average temperature in Lone Tree in December is 31.4°F (18.8°F–44.0°F). Average precipitation: 0.35 inches.
December is a winter month in Lone Tree, and is cooler than the annual average of 50.2°F. Daily temperatures swing about 25.2°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 9h 13m. For travel, December is cold.
Avg High
44.0°F
Avg Low
18.8°F
Precipitation
0.35 in
Daylight
9h 13m
December records in Lone Tree
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 71.1°F (1998) | 10.0°F (2005) | 0.06 in (2011) |
| December 2 | 73.0°F (2021) | 2.1°F (2006) | 0.07 in (2006) |
| December 3 | 68.0°F (2010) | 0.1°F (2006) | 0.34 in (2005) |
| December 4 | 69.1°F (2007) | -7.8°F (2013) | 0.13 in (2013) |
| December 5 | 69.1°F (2012) | -12.8°F (2013) | 0.12 in (2019) |
| December 6 | 70.0°F (2023) | -12.8°F (2013) | 0.12 in (2009) |
| December 7 | 64.0°F (2008) | -11.0°F (2005) | 0.01 in (2009) |
| December 8 | 70.0°F (2020) | -7.8°F (2009) | 0.25 in (2007) |
| December 9 | 68.0°F (2020) | -12.8°F (2009) | 0.10 in (2008) |
| December 10 | 64.9°F (2015) | 3.0°F (1998) | 0.05 in (2020) |
| December 11 | 69.1°F (2004) | -0.9°F (2000) | 0.05 in (2007) |
| December 12 | 68.0°F (2014) | 1.0°F (2000) | 0.09 in (2001) |
| December 13 | 64.0°F (2021) | 5.0°F (2000) | 0.06 in (2023) |
| December 14 | 66.9°F (2025) | -4.9°F (2008) | 0.11 in (2014) |
| December 15 | 69.1°F (2025) | -8.9°F (2008) | 0.09 in (2015) |
| December 16 | 64.9°F (2025) | -2.7°F (2008) | 0.21 in (2001) |
| December 17 | 69.1°F (2025) | -4.9°F (2016) | 0.19 in (2016) |
| December 18 | 64.9°F (2013) | -3.8°F (2016) | 0.05 in (2008) |
| December 19 | 69.1°F (2025) | -2.0°F (1998) | 0.05 in (2011) |
| December 20 | 66.9°F (2024) | -2.9°F (1998) | 0.88 in (2006) |
| December 21 | 66.9°F (2025) | -11.0°F (1998) | 0.27 in (2006) |
| December 22 | 75.9°F (2025) | -15.9°F (2022) | 0.13 in (2011) |
| December 23 | 73.0°F (2025) | -14.1°F (1998) | 0.14 in (2009) |
| December 24 | 69.1°F (2025) | -9.0°F (1998) | 0.07 in (2023) |
| December 25 | 71.1°F (2025) | 2.1°F (2012) | 0.07 in (2014) |
| December 26 | 66.9°F (2025) | 2.1°F (2012) | 0.19 in (2023) |
| December 27 | 63.0°F (2022) | 1.2°F (2014) | 0.15 in (2007) |
| December 28 | 61.0°F (2002) | -0.8°F (2007) | 0.81 in (2006) |
| December 29 | 62.1°F (2017) | 0.1°F (2014) | 0.19 in (2022) |
| December 30 | 64.0°F (2016) | -12.8°F (2014) | 0.01 in (2007) |
| December 31 | 64.0°F (2005) | -11.7°F (2014) | 0.10 in (2021) |