December weather in Denver, CO
The average temperature in Denver in December is 31.8°F (17.7°F–45.9°F). Average precipitation: 0.47 inches. Average snowfall is 6.6 inches.
December is a winter month in Denver, and is cooler than the annual average of 51.4°F. Daily temperatures swing about 28.2°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 9h 12m. For travel, December is cool.
Avg High
45.9°F
Avg Low
17.7°F
Precipitation
0.47 in
Snow
6.6 in
December records in Denver
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 73.9°F (2021) | -6.0°F (1985) | 0.18 in (1978) |
| December 2 | 72.0°F (1998) | 1.0°F (1991) | 0.24 in (1973) |
| December 3 | 69.1°F (2008) | 3.0°F (2006) | 0.47 in (1973) |
| December 4 | 71.1°F (2017) | 1.9°F (1955) | 0.57 in (1960) |
| December 5 | 72.0°F (2007) | -15.0°F (1972) | 0.40 in (2008) |
| December 6 | 71.1°F (1981) | -17.0°F (1972) | 0.14 in (1960) |
| December 7 | 71.1°F (2023) | -8.0°F (2013) | 0.35 in (1988) |
| December 8 | 69.1°F (1996) | -9.9°F (1978) | 0.16 in (1961) |
| December 9 | 71.1°F (1957) | -14.1°F (1972) | 0.31 in (2003) |
| December 10 | 68.0°F (1975) | -18.0°F (1972) | 0.44 in (1989) |
| December 11 | 68.0°F (1990) | -11.0°F (1963) | 0.31 in (1949) |
| December 12 | 71.1°F (2004) | -11.9°F (1961) | 0.25 in (1958) |
| December 13 | 71.1°F (2017) | -11.9°F (1961) | 0.29 in (1951) |
| December 14 | 66.9°F (1969) | -9.9°F (1963) | 0.30 in (1988) |
| December 15 | 68.0°F (2025) | -15.0°F (2008) | 0.41 in (2015) |
| December 16 | 70.0°F (1980) | -13.0°F (2008) | 0.23 in (1996) |
| December 17 | 73.0°F (1980) | -8.0°F (1964) | 0.48 in (2016) |
| December 18 | 71.1°F (2025) | -15.0°F (2016) | 0.60 in (1973) |
| December 19 | 68.0°F (2013) | -9.9°F (1989) | 0.09 in (1993) |
| December 20 | 73.0°F (2025) | -16.1°F (1983) | 0.13 in (1998) |
| December 21 | 66.9°F (2024) | -20.9°F (1983) | 1.43 in (2006) |
| December 22 | 70.0°F (1955) | -25.1°F (1990) | 0.44 in (2011) |
| December 23 | 75.9°F (2025) | -17.0°F (1990) | 1.23 in (1973) |
| December 24 | 70.0°F (1955) | -16.1°F (1983) | 2.00 in (1982) |
| December 25 | 69.1°F (2025) | -9.9°F (1983) | 0.16 in (2007) |
| December 26 | 73.0°F (2025) | -5.1°F (1982) | 0.41 in (1967) |
| December 27 | 75.0°F (1980) | -4.0°F (1967) | 0.54 in (1987) |
| December 28 | 64.0°F (2022) | -11.9°F (1983) | 0.18 in (2007) |
| December 29 | 66.9°F (1965) | -15.0°F (1983) | 0.83 in (2022) |
| December 30 | 71.1°F (1980) | -8.0°F (1990) | 0.14 in (2014) |
| December 31 | 64.9°F (1996) | -13.0°F (2014) | 0.29 in (1975) |