December weather in Washington, IN
The average temperature in Washington in December is 36.5°F (28.4°F–44.7°F). Average precipitation: 3.68 inches. Average snowfall is 3.1 inches.
December is a winter month in Washington, and is cooler than the annual average of 56.3°F. Daily temperatures swing about 16.3°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 9h 18m. For travel, December is cold.
Avg High
44.7°F
Avg Low
28.4°F
Precipitation
3.68 in
Snow
3.1 in
December records in Washington
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 66.9°F (1941) | 6.1°F (1964) | 1.40 in (2018) |
| December 2 | 75.0°F (1982) | 8.1°F (1942) | 1.70 in (1905) |
| December 3 | 73.0°F (2012) | 0.0°F (1929) | 2.55 in (1982) |
| December 4 | 72.0°F (1998) | 8.1°F (1991) | 1.26 in (1922) |
| December 5 | 71.1°F (2001) | 10.0°F (2024) | 1.97 in (2011) |
| December 6 | 73.0°F (1998) | 6.1°F (2002) | 1.85 in (1953) |
| December 7 | 71.1°F (1998) | 5.0°F (2013) | 1.60 in (1922) |
| December 8 | 68.0°F (1946) | 1.0°F (1917) | 1.73 in (2007) |
| December 9 | 70.0°F (1897) | -9.9°F (1917) | 1.53 in (2008) |
| December 10 | 70.0°F (1897) | -11.0°F (1917) | 1.13 in (1999) |
| December 11 | 73.9°F (1931) | -8.0°F (1917) | 1.48 in (2000) |
| December 12 | 71.1°F (2015) | -6.0°F (1962) | 1.94 in (2006) |
| December 13 | 68.0°F (1929) | -2.0°F (1962) | 2.80 in (1901) |
| December 14 | 69.1°F (1984) | -9.0°F (1901) | 1.23 in (1907) |
| December 15 | 70.0°F (1933) | -8.0°F (1901) | 2.01 in (2018) |
| December 16 | 75.0°F (2007) | -9.9°F (1989) | 2.57 in (2024) |
| December 17 | 69.1°F (1984) | -2.9°F (1901) | 2.50 in (2001) |
| December 18 | 66.9°F (2006) | -5.1°F (1989) | 1.14 in (1990) |
| December 19 | 61.0°F (2008) | -9.0°F (1963) | 1.50 in (2002) |
| December 20 | 66.9°F (1949) | -6.0°F (1989) | 1.10 in (1973) |
| December 21 | 66.9°F (1967) | -8.0°F (1989) | 1.69 in (1984) |
| December 22 | 63.0°F (1949) | -18.9°F (1989) | 1.22 in (1920) |
| December 23 | 66.0°F (2025) | -18.9°F (1989) | 1.40 in (1921) |
| December 24 | 66.9°F (2023) | -9.0°F (1983) | 1.50 in (2008) |
| December 25 | 66.9°F (2019) | -11.9°F (2004) | 2.81 in (1982) |
| December 26 | 70.0°F (1942) | -2.9°F (1948) | 1.57 in (2007) |
| December 27 | 71.1°F (2008) | -4.0°F (1935) | 2.04 in (1904) |
| December 28 | 71.1°F (2008) | -11.9°F (1924) | 1.33 in (1954) |
| December 29 | 71.1°F (1984) | -2.0°F (1961) | 1.85 in (2024) |
| December 30 | 70.0°F (1964) | -8.0°F (1983) | 2.27 in (1990) |
| December 31 | 69.1°F (1951) | -4.0°F (1976) | 1.83 in (1978) |