December weather in Arvada, CO
The average temperature in Arvada in December is 33.8°F (22.8°F–44.7°F). Average precipitation: 0.72 inches. Average snowfall is 9.0 inches.
December is a winter month in Arvada, and is cooler than the annual average of 51.5°F. Daily temperatures swing about 21.9°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 9h 11m. For travel, December is cold.
Avg High
44.7°F
Avg Low
22.8°F
Precipitation
0.72 in
Snow
9.0 in
December records in Arvada
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 64.9°F (2003) | 7.0°F (2006) | 0.51 in (1986) |
| December 2 | 71.1°F (1998) | 9.0°F (2011) | 0.34 in (1978) |
| December 3 | 70.0°F (1998) | 3.9°F (2006) | 0.43 in (2025) |
| December 4 | 66.9°F (1998) | 1.0°F (2009) | 0.41 in (1999) |
| December 5 | 66.0°F (1998) | -7.1°F (2013) | 0.18 in (2011) |
| December 6 | 68.0°F (2012) | -9.0°F (2013) | 0.37 in (1978) |
| December 7 | 82.0°F (2002) | -9.0°F (2013) | 0.19 in (1978) |
| December 8 | 62.1°F (2008) | -7.1°F (2005) | 0.53 in (1988) |
| December 9 | 62.1°F (2020) | -9.0°F (2009) | 0.55 in (2003) |
| December 10 | 66.0°F (2015) | -2.0°F (2013) | 0.35 in (1998) |
| December 11 | 63.0°F (2015) | 1.9°F (2000) | 0.33 in (1989) |
| December 12 | 66.9°F (2004) | 1.9°F (2000) | 0.10 in (2007) |
| December 13 | 66.9°F (2014) | 1.9°F (2000) | 0.20 in (2015) |
| December 14 | 63.0°F (2010) | 1.0°F (2008) | 0.32 in (2007) |
| December 15 | 66.0°F (2025) | -14.1°F (2008) | 0.65 in (1988) |
| December 16 | 66.0°F (2025) | -14.1°F (2008) | 0.41 in (2015) |
| December 17 | 61.0°F (2023) | -4.0°F (2016) | 0.58 in (2016) |
| December 18 | 68.0°F (2025) | -6.0°F (2016) | 0.15 in (1989) |
| December 19 | 64.9°F (2013) | -6.0°F (2016) | 0.06 in (2012) |
| December 20 | 69.1°F (2025) | -5.1°F (1998) | 0.38 in (2012) |
| December 21 | 64.0°F (2003) | -9.0°F (1998) | 1.52 in (2006) |
| December 22 | 64.9°F (2025) | -15.0°F (2022) | 0.70 in (2011) |
| December 23 | 72.0°F (2025) | -13.0°F (2022) | 0.28 in (1979) |
| December 24 | 64.0°F (2021) | -9.0°F (1998) | 0.77 in (1982) |
| December 25 | 70.0°F (2025) | -2.0°F (2009) | 0.74 in (1982) |
| December 26 | 69.1°F (2025) | 0.0°F (2009) | 0.49 in (2024) |
| December 27 | 62.1°F (2005) | 0.0°F (2009) | 0.76 in (1987) |
| December 28 | 63.0°F (2022) | 3.0°F (2015) | 0.53 in (1979) |
| December 29 | 64.0°F (2002) | 7.0°F (2018) | 1.57 in (2022) |
| December 30 | 61.0°F (1999) | -5.1°F (2014) | 0.19 in (2014) |
| December 31 | 62.1°F (2017) | -11.9°F (2014) | 0.31 in (2010) |