December weather in Hayden, CO
The average temperature in Hayden in December is 20.4°F (9.5°F–31.3°F). Average precipitation: 1.66 inches. Average snowfall is 23.8 inches.
December is a winter month in Hayden, and is cooler than the annual average of 43.7°F. Daily temperatures swing about 21.8°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 9h 7m. For travel, December is cold.
Avg High
31.3°F
Avg Low
9.5°F
Precipitation
1.66 in
Snow
23.8 in
December records in Hayden
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 57.9°F (1998) | -15.0°F (1991) | 1.34 in (2007) |
| December 2 | 60.1°F (2021) | -15.0°F (1967) | 0.60 in (1913) |
| December 3 | 66.0°F (1941) | -7.1°F (2009) | 0.46 in (2023) |
| December 4 | 60.1°F (1939) | -18.0°F (1927) | 0.66 in (1954) |
| December 5 | 64.0°F (1939) | -20.9°F (2013) | 0.65 in (2019) |
| December 6 | 64.0°F (1939) | -23.1°F (1972) | 1.02 in (1966) |
| December 7 | 57.9°F (1939) | -20.9°F (2005) | 0.72 in (2007) |
| December 8 | 61.0°F (1940) | -26.0°F (1978) | 0.75 in (2003) |
| December 9 | 62.1°F (1939) | -25.1°F (1951) | 0.23 in (1936) |
| December 10 | 63.0°F (1939) | -25.1°F (1923) | 0.50 in (1942) |
| December 11 | 61.0°F (1939) | -20.9°F (1923) | 0.80 in (2016) |
| December 12 | 57.0°F (1921) | -29.9°F (1932) | 0.42 in (1937) |
| December 13 | 55.0°F (1929) | -41.1°F (1932) | 0.52 in (2009) |
| December 14 | 54.0°F (1929) | -32.1°F (1932) | 0.55 in (2019) |
| December 15 | 57.9°F (1929) | -29.0°F (1932) | 0.46 in (1989) |
| December 16 | 59.0°F (1939) | -24.0°F (1931) | 0.45 in (1933) |
| December 17 | 57.9°F (1980) | -20.9°F (1933) | 0.40 in (2002) |
| December 18 | 61.0°F (1980) | -33.0°F (1927) | 0.64 in (2012) |
| December 19 | 57.0°F (2025) | -25.1°F (1945) | 0.50 in (2005) |
| December 20 | 52.0°F (1980) | -18.9°F (1927) | 0.73 in (2010) |
| December 21 | 48.9°F (1941) | -22.0°F (1990) | 0.60 in (1921) |
| December 22 | 60.1°F (2025) | -29.0°F (1990) | 0.75 in (1974) |
| December 23 | 61.0°F (2025) | -33.0°F (1990) | 1.02 in (1987) |
| December 24 | 62.1°F (2025) | -25.1°F (1952) | 0.97 in (2021) |
| December 25 | 57.0°F (2025) | -25.1°F (1962) | 0.73 in (1983) |
| December 26 | 52.0°F (1980) | -29.9°F (1962) | 0.62 in (1967) |
| December 27 | 57.9°F (1980) | -27.0°F (1961) | 0.41 in (2025) |
| December 28 | 53.1°F (1980) | -31.0°F (1939) | 0.89 in (1964) |
| December 29 | 55.0°F (1980) | -27.0°F (1969) | 1.12 in (1927) |
| December 30 | 55.0°F (1980) | -18.9°F (1990) | 1.82 in (1951) |
| December 31 | 57.9°F (1980) | -29.0°F (1927) | 0.74 in (2022) |