December weather in Washington, UT
The average temperature in Washington in December is 40.4°F (27.9°F–53.0°F). Average precipitation: 0.86 inches.
December is a winter month in Washington, and is cooler than the annual average of 62.7°F. Daily temperatures swing about 25.1°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 9h 28m. For travel, December is cool.
Avg High
53.0°F
Avg Low
27.9°F
Precipitation
0.86 in
Daylight
9h 28m
December records in Washington
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 70.0°F (1973) | 7.0°F (1911) | 1.85 in (2007) |
| December 2 | 69.1°F (1941) | 10.0°F (1911) | 0.45 in (1955) |
| December 3 | 75.0°F (1941) | 12.9°F (1894) | 0.39 in (1908) |
| December 4 | 70.0°F (1977) | 8.1°F (1898) | 0.55 in (1906) |
| December 5 | 73.0°F (1977) | 12.0°F (1896) | 0.38 in (1951) |
| December 6 | 71.1°F (1901) | 15.1°F (1895) | 0.58 in (1966) |
| December 7 | 70.0°F (2023) | 10.9°F (1898) | 0.70 in (2009) |
| December 8 | 66.9°F (1938) | 12.0°F (1895) | 0.40 in (1947) |
| December 9 | 70.0°F (1893) | 10.9°F (1895) | 0.75 in (1931) |
| December 10 | 70.0°F (1950) | 9.0°F (1899) | 0.79 in (1965) |
| December 11 | 69.1°F (1939) | 8.1°F (1898) | 0.44 in (1984) |
| December 12 | 70.0°F (1950) | 3.0°F (1898) | 0.71 in (1940) |
| December 13 | 69.1°F (1958) | 5.0°F (1898) | 0.95 in (1933) |
| December 14 | 66.0°F (1942) | 5.0°F (1899) | 0.65 in (1934) |
| December 15 | 68.0°F (1950) | 3.9°F (1940) | 0.35 in (1895) |
| December 16 | 68.0°F (1977) | 3.0°F (1940) | 0.57 in (1908) |
| December 17 | 68.0°F (1980) | 8.1°F (1895) | 0.74 in (1940) |
| December 18 | 66.0°F (2025) | 5.0°F (1895) | 0.40 in (2008) |
| December 19 | 66.0°F (1901) | 3.0°F (1897) | 0.57 in (1949) |
| December 20 | 66.0°F (1893) | 1.9°F (1897) | 0.60 in (1984) |
| December 21 | 66.9°F (2023) | 3.9°F (1897) | 1.13 in (2010) |
| December 22 | 66.9°F (2023) | 5.0°F (1898) | 0.50 in (1965) |
| December 23 | 75.0°F (1955) | 3.0°F (1990) | 0.61 in (2010) |
| December 24 | 69.1°F (1955) | 3.9°F (1895) | 0.51 in (1940) |
| December 25 | 66.9°F (1955) | -4.0°F (1909) | 1.01 in (1942) |
| December 26 | 70.0°F (1980) | -4.0°F (1909) | 0.46 in (1921) |
| December 27 | 69.1°F (1955) | -4.0°F (1909) | 0.90 in (1936) |
| December 28 | 68.0°F (1917) | 0.0°F (1909) | 0.90 in (2004) |
| December 29 | 68.0°F (1980) | 0.0°F (1895) | 0.62 in (1911) |
| December 30 | 68.0°F (1917) | 1.0°F (1895) | 1.00 in (2010) |
| December 31 | 70.0°F (1995) | 1.0°F (1898) | 0.39 in (2016) |