December weather in Arlington, OR
The average temperature in Arlington in December is 35.5°F (29.9°F–41.1°F). Average precipitation: 1.66 inches. Average snowfall is 1.4 inches.
December is a winter month in Arlington, and is cooler than the annual average of 54.3°F. Daily temperatures swing about 11.2°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 8h 30m. For travel, December is cold.
Avg High
41.1°F
Avg Low
29.9°F
Precipitation
1.66 in
Snow
1.4 in
December records in Arlington
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 61.0°F (1972) | -5.1°F (1985) | 1.10 in (1897) |
| December 2 | 66.0°F (2021) | 10.0°F (1985) | 0.70 in (1980) |
| December 3 | 64.9°F (1982) | 12.0°F (1931) | 0.36 in (1987) |
| December 4 | 63.0°F (1975) | 10.0°F (1972) | 0.51 in (1943) |
| December 5 | 59.0°F (1925) | 5.0°F (1972) | 0.60 in (1996) |
| December 6 | 61.0°F (1933) | 7.0°F (2013) | 0.69 in (1933) |
| December 7 | 64.0°F (1938) | 3.0°F (2009) | 0.43 in (1973) |
| December 8 | 57.9°F (1893) | -5.1°F (1972) | 0.72 in (1996) |
| December 9 | 69.1°F (2015) | -7.1°F (1972) | 0.70 in (1987) |
| December 10 | 63.0°F (1987) | -7.1°F (1972) | 0.78 in (1937) |
| December 11 | 64.9°F (2025) | -7.1°F (1932) | 0.63 in (1977) |
| December 12 | 64.0°F (2014) | -0.9°F (1932) | 0.70 in (1995) |
| December 13 | 64.0°F (1924) | -0.9°F (1932) | 1.62 in (1977) |
| December 14 | 62.1°F (1924) | 0.0°F (1932) | 0.61 in (2006) |
| December 15 | 64.0°F (1939) | 0.0°F (2008) | 0.86 in (1981) |
| December 16 | 63.0°F (2025) | -0.9°F (2008) | 0.22 in (1973) |
| December 17 | 61.0°F (1933) | -7.1°F (1964) | 0.44 in (2025) |
| December 18 | 61.0°F (1936) | -5.1°F (1964) | 0.81 in (1929) |
| December 19 | 57.9°F (1933) | -5.1°F (1984) | 1.39 in (2025) |
| December 20 | 62.1°F (1933) | -0.9°F (1984) | 0.82 in (2021) |
| December 21 | 73.9°F (1933) | 3.0°F (1984) | 1.20 in (1964) |
| December 22 | 64.9°F (1933) | -9.0°F (1924) | 2.27 in (1964) |
| December 23 | 68.0°F (1936) | -9.0°F (1924) | 0.89 in (1964) |
| December 24 | 57.0°F (1899) | -2.0°F (1983) | 1.04 in (1964) |
| December 25 | 64.9°F (1957) | 5.0°F (1990) | 0.65 in (1980) |
| December 26 | 62.1°F (1957) | -11.9°F (1924) | 0.60 in (2012) |
| December 27 | 60.1°F (1949) | 6.1°F (1924) | 1.40 in (1998) |
| December 28 | 63.0°F (1937) | 9.0°F (1983) | 1.21 in (1945) |
| December 29 | 64.0°F (1937) | -7.1°F (1990) | 0.76 in (2005) |
| December 30 | 57.9°F (1958) | -5.1°F (1990) | 0.84 in (2005) |
| December 31 | 59.0°F (1958) | -2.9°F (1978) | 0.90 in (1902) |