December weather in Aspen, CO
The average temperature in Aspen in December is 21.1°F (10.3°F–31.9°F). Average precipitation: 2.00 inches. Average snowfall is 27.5 inches.
December is a winter month in Aspen, and is cooler than the annual average of 40.6°F. Daily temperatures swing about 21.6°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 9h 15m. For travel, December is cold.
Avg High
31.9°F
Avg Low
10.3°F
Precipitation
2.00 in
Snow
27.5 in
December records in Aspen
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 62.1°F (1999) | -9.9°F (2006) | 0.82 in (2007) |
| December 2 | 61.0°F (1998) | -2.0°F (2004) | 1.16 in (2007) |
| December 3 | 55.9°F (1998) | -5.1°F (2006) | 0.71 in (2005) |
| December 4 | 62.1°F (2017) | -8.0°F (2009) | 1.05 in (2013) |
| December 5 | 55.0°F (1998) | -14.1°F (2013) | 0.55 in (1983) |
| December 6 | 51.1°F (2015) | -13.0°F (2013) | 0.64 in (1996) |
| December 7 | 55.0°F (2003) | -6.0°F (1992) | 0.61 in (2007) |
| December 8 | 53.1°F (1981) | -5.1°F (1992) | 0.57 in (2007) |
| December 9 | 52.0°F (1981) | -15.0°F (2005) | 0.79 in (2012) |
| December 10 | 55.0°F (1981) | -11.9°F (1986) | 1.30 in (2021) |
| December 11 | 50.0°F (1990) | -6.0°F (1986) | 0.51 in (2000) |
| December 12 | 50.0°F (1992) | -4.0°F (1985) | 0.75 in (1984) |
| December 13 | 52.0°F (2004) | -5.1°F (1985) | 0.31 in (2015) |
| December 14 | 50.0°F (2014) | -6.0°F (1993) | 0.98 in (2008) |
| December 15 | 50.0°F (2021) | -8.0°F (1987) | 0.60 in (2003) |
| December 16 | 51.1°F (2025) | -7.1°F (2007) | 0.36 in (2010) |
| December 17 | 55.0°F (1980) | -14.1°F (1996) | 1.48 in (2016) |
| December 18 | 55.0°F (1980) | -23.1°F (1996) | 0.40 in (2002) |
| December 19 | 50.0°F (1980) | -13.0°F (1996) | 0.52 in (1990) |
| December 20 | 55.0°F (2025) | -11.0°F (1992) | 0.60 in (1983) |
| December 21 | 48.0°F (1985) | -11.9°F (2012) | 0.82 in (1998) |
| December 22 | 55.0°F (2025) | -15.0°F (1998) | 1.02 in (2014) |
| December 23 | 55.9°F (2025) | -18.9°F (1990) | 0.92 in (2008) |
| December 24 | 54.0°F (2025) | -20.9°F (1990) | 0.81 in (2021) |
| December 25 | 54.0°F (2025) | -8.0°F (1990) | 0.85 in (2021) |
| December 26 | 46.9°F (2025) | -5.1°F (1982) | 0.40 in (1988) |
| December 27 | 48.9°F (2005) | -9.9°F (1988) | 0.60 in (1981) |
| December 28 | 52.0°F (1980) | -11.9°F (1988) | 0.55 in (1983) |
| December 29 | 48.0°F (1985) | -11.9°F (1982) | 0.49 in (2020) |
| December 30 | 46.9°F (1999) | -11.9°F (1982) | 0.80 in (2004) |
| December 31 | 51.1°F (1980) | -9.0°F (2019) | 0.65 in (1981) |