December weather in Louisville, CO
The average temperature in Louisville in December is 33.7°F (21.1°F–46.3°F). Average precipitation: 0.81 inches. Average snowfall is 13.0 inches.
December is a winter month in Louisville, and is cooler than the annual average of 51.5°F. Daily temperatures swing about 25.2°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 9h 10m. For travel, December is cool.
Avg High
46.3°F
Avg Low
21.1°F
Precipitation
0.81 in
Snow
13.0 in
December records in Louisville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 72.0°F (2021) | -5.1°F (1985) | 0.65 in (1929) |
| December 2 | 72.0°F (2021) | -9.0°F (1919) | 1.10 in (1933) |
| December 3 | 70.0°F (1926) | -2.0°F (1919) | 0.66 in (2025) |
| December 4 | 75.0°F (1965) | -0.9°F (1909) | 1.42 in (1913) |
| December 5 | 71.1°F (2012) | -11.9°F (1972) | 1.47 in (1913) |
| December 6 | 69.1°F (1981) | -16.1°F (1972) | 0.37 in (1964) |
| December 7 | 68.0°F (1984) | -15.0°F (1927) | 0.77 in (1988) |
| December 8 | 71.1°F (1940) | -9.0°F (1932) | 0.50 in (1919) |
| December 9 | 73.9°F (1957) | -20.0°F (1919) | 0.80 in (1985) |
| December 10 | 70.0°F (1915) | -11.9°F (1932) | 0.39 in (1938) |
| December 11 | 71.1°F (1934) | -18.0°F (1932) | 0.35 in (2007) |
| December 12 | 68.0°F (2017) | -18.9°F (1932) | 1.04 in (1937) |
| December 13 | 73.9°F (1921) | -9.9°F (1926) | 0.50 in (1902) |
| December 14 | 69.1°F (1924) | -11.0°F (1901) | 0.55 in (1925) |
| December 15 | 70.0°F (2006) | -15.0°F (2008) | 0.76 in (1988) |
| December 16 | 69.1°F (1941) | -7.1°F (2008) | 0.50 in (1909) |
| December 17 | 75.9°F (1980) | -9.0°F (1964) | 0.40 in (2016) |
| December 18 | 69.1°F (1979) | -14.1°F (1909) | 0.38 in (1973) |
| December 19 | 70.0°F (2025) | -17.0°F (1924) | 0.52 in (1913) |
| December 20 | 70.0°F (1954) | -16.1°F (1924) | 1.13 in (2006) |
| December 21 | 66.0°F (1982) | -20.0°F (1990) | 0.57 in (2006) |
| December 22 | 72.0°F (2025) | -24.0°F (1990) | 0.93 in (2011) |
| December 23 | 71.1°F (1955) | -14.1°F (2022) | 0.79 in (1924) |
| December 24 | 71.1°F (2025) | -18.0°F (1924) | 1.14 in (1982) |
| December 25 | 70.0°F (2025) | -9.9°F (1983) | 0.36 in (2007) |
| December 26 | 70.0°F (1947) | -6.0°F (1916) | 0.56 in (1922) |
| December 27 | 73.9°F (1980) | -9.9°F (1916) | 0.98 in (1987) |
| December 28 | 66.9°F (1980) | -8.0°F (1924) | 0.44 in (1979) |
| December 29 | 69.1°F (1965) | -13.0°F (1990) | 1.26 in (2022) |
| December 30 | 71.1°F (1980) | -11.0°F (1990) | 0.52 in (1951) |
| December 31 | 66.0°F (1904) | -18.0°F (1923) | 0.32 in (1994) |