December weather in Philomath, OR
The average temperature in Philomath in December is 37.2°F (28.3°F–46.1°F). Average precipitation: 13.42 inches. Average snowfall is 0.9 inches.
December is a winter month in Philomath, and is cooler than the annual average of 49.8°F. Daily temperatures swing about 17.8°F between overnight low and afternoon high. Expect about 21 days with precipitation. Daylight averages about 8h 39m. For travel, December is a wet month.
Avg High
46.1°F
Avg Low
28.3°F
Precipitation
13.42 in
Snow
0.9 in
December records in Philomath
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 57.9°F (2021) | 17.1°F (1969) | 2.67 in (2001) |
| December 2 | 60.1°F (2021) | 17.1°F (1969) | 3.58 in (1941) |
| December 3 | 55.0°F (1975) | 17.1°F (2009) | 4.32 in (1987) |
| December 4 | 57.9°F (2007) | 17.1°F (1972) | 3.94 in (1975) |
| December 5 | 61.0°F (2007) | 12.9°F (2013) | 3.10 in (1951) |
| December 6 | 59.0°F (1982) | 12.9°F (2013) | 4.05 in (1981) |
| December 7 | 57.9°F (1965) | 10.0°F (2013) | 2.75 in (2015) |
| December 8 | 59.0°F (2015) | 1.9°F (1972) | 2.34 in (2004) |
| December 9 | 60.1°F (2015) | 1.9°F (1972) | 2.48 in (1939) |
| December 10 | 57.9°F (1993) | 1.9°F (1972) | 2.80 in (1968) |
| December 11 | 59.0°F (2025) | 3.0°F (2009) | 2.81 in (1995) |
| December 12 | 57.9°F (2010) | 7.0°F (2009) | 4.30 in (1969) |
| December 13 | 59.0°F (2010) | 12.9°F (1972) | 2.98 in (1973) |
| December 14 | 57.9°F (1977) | 19.0°F (1967) | 3.23 in (2001) |
| December 15 | 57.0°F (2004) | 15.1°F (2008) | 3.02 in (1981) |
| December 16 | 61.0°F (2025) | 10.9°F (2008) | 3.15 in (1982) |
| December 17 | 59.0°F (1974) | 6.1°F (1964) | 2.60 in (1961) |
| December 18 | 57.0°F (1979) | 8.1°F (1964) | 4.50 in (2018) |
| December 19 | 59.0°F (1999) | 15.1°F (1984) | 4.63 in (2025) |
| December 20 | 57.0°F (1972) | 9.0°F (1990) | 3.15 in (2021) |
| December 21 | 60.1°F (1973) | 1.9°F (1990) | 3.30 in (1964) |
| December 22 | 57.9°F (1964) | 1.9°F (1990) | 4.34 in (1964) |
| December 23 | 59.0°F (1964) | 6.1°F (1983) | 1.86 in (1936) |
| December 24 | 57.9°F (1967) | 5.0°F (1983) | 4.28 in (1964) |
| December 25 | 59.0°F (1980) | 9.0°F (1990) | 4.30 in (1980) |
| December 26 | 60.1°F (1980) | 14.0°F (2009) | 5.37 in (1937) |
| December 27 | 57.0°F (1972) | 14.0°F (2009) | 3.79 in (1937) |
| December 28 | 55.9°F (1980) | 18.0°F (1985) | 5.51 in (1998) |
| December 29 | 55.0°F (2011) | 12.0°F (1978) | 5.10 in (1937) |
| December 30 | 55.9°F (1980) | 9.0°F (1978) | 2.86 in (2005) |
| December 31 | 60.1°F (1980) | 9.0°F (1990) | 2.81 in (1970) |