December weather in Monument, CO
The average temperature in Monument in December is 28.9°F (14.6°F–43.2°F). Average precipitation: 0.47 inches.
December is a winter month in Monument, and is cooler than the annual average of 46.7°F. Daily temperatures swing about 28.6°F between overnight low and afternoon high. Daylight averages about 9h 16m. For travel, December is cold.
Avg High
43.2°F
Avg Low
14.6°F
Precipitation
0.47 in
Daylight
9h 16m
December records in Monument
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 63.0°F (2011) | 3.0°F (2010) | 0.00 in (2009) |
| December 2 | 66.9°F (2021) | 10.0°F (2016) | 0.02 in (2009) |
| December 3 | 68.0°F (2021) | 1.9°F (2009) | 0.05 in (2009) |
| December 4 | 63.0°F (2010) | -11.0°F (2009) | 0.01 in (2009) |
| December 5 | 60.1°F (2015) | -9.0°F (2009) | 0.16 in (2013) |
| December 6 | 66.0°F (2012) | -16.1°F (2013) | 0.01 in (2009) |
| December 7 | 57.9°F (2020) | -15.0°F (2013) | 0.13 in (2016) |
| December 8 | 60.1°F (2020) | -6.0°F (2009) | 0.00 in (2009) |
| December 9 | 61.0°F (2020) | -18.9°F (2009) | 0.00 in (2010) |
| December 10 | 61.0°F (2015) | -18.0°F (2009) | 0.18 in (2012) |
| December 11 | 62.1°F (2015) | -2.0°F (2009) | 0.00 in (2009) |
| December 12 | 57.9°F (2015) | 1.0°F (2012) | 0.00 in (2009) |
| December 13 | 64.0°F (2021) | 3.0°F (2020) | 0.14 in (2020) |
| December 14 | 64.0°F (2010) | 3.0°F (2020) | 0.08 in (2017) |
| December 15 | 63.0°F (2021) | 5.0°F (2016) | 0.39 in (2015) |
| December 16 | 64.0°F (2016) | 1.9°F (2020) | 0.27 in (2019) |
| December 17 | 60.1°F (2013) | -5.1°F (2016) | 0.16 in (2016) |
| December 18 | 57.0°F (2018) | -17.0°F (2016) | 0.00 in (2009) |
| December 19 | 62.1°F (2013) | -4.0°F (2016) | 0.00 in (2009) |
| December 20 | 57.0°F (2013) | -0.9°F (2012) | 0.28 in (2011) |
| December 21 | 62.1°F (2017) | 5.0°F (2011) | 0.03 in (2015) |
| December 22 | 62.1°F (2017) | 3.0°F (2017) | 0.00 in (2009) |
| December 23 | 64.9°F (2019) | -2.9°F (2011) | 0.12 in (2009) |
| December 24 | 60.1°F (2021) | -5.1°F (2017) | 0.07 in (2009) |
| December 25 | 55.0°F (2016) | -0.9°F (2017) | 0.13 in (2016) |
| December 26 | 55.0°F (2020) | 1.9°F (2011) | 0.00 in (2009) |
| December 27 | 57.9°F (2020) | 1.0°F (2017) | 0.00 in (2009) |
| December 28 | 55.9°F (2013) | -0.9°F (2015) | 0.05 in (2012) |
| December 29 | 57.0°F (2017) | -5.1°F (2018) | 0.18 in (2013) |
| December 30 | 64.0°F (2017) | -5.1°F (2018) | 0.00 in (2009) |
| December 31 | 64.9°F (2017) | -4.0°F (2010) | 0.24 in (2010) |