December weather in Jefferson, OR
The average temperature in Jefferson in December is 40.1°F (34.3°F–46.0°F). Average precipitation: 8.50 inches.
December is a winter month in Jefferson, and is cooler than the annual average of 52.8°F. Daily temperatures swing about 11.7°F between overnight low and afternoon high. Expect about 21 days with precipitation. Daylight averages about 8h 38m. For travel, December is a wet month.
Avg High
46.0°F
Avg Low
34.3°F
Precipitation
8.50 in
Daylight
8h 38m
December records in Jefferson
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 61.0°F (1958) | 19.0°F (1976) | 1.61 in (1994) |
| December 2 | 64.0°F (1958) | 19.0°F (1985) | 1.75 in (1980) |
| December 3 | 62.1°F (1958) | 21.0°F (1985) | 3.50 in (1987) |
| December 4 | 63.0°F (1989) | 21.0°F (2013) | 2.73 in (1968) |
| December 5 | 63.0°F (1989) | 15.1°F (1972) | 1.82 in (1996) |
| December 6 | 61.0°F (2007) | 15.1°F (2013) | 2.37 in (1981) |
| December 7 | 59.0°F (1957) | 6.1°F (1972) | 1.51 in (2015) |
| December 8 | 60.1°F (1957) | -7.1°F (1972) | 1.61 in (1996) |
| December 9 | 63.0°F (2014) | 1.0°F (1972) | 1.80 in (2015) |
| December 10 | 66.0°F (1993) | -2.0°F (1972) | 1.47 in (1992) |
| December 11 | 61.0°F (2014) | 3.9°F (1972) | 1.59 in (1993) |
| December 12 | 63.0°F (1960) | 12.0°F (2009) | 1.25 in (2021) |
| December 13 | 63.0°F (1995) | 17.1°F (2013) | 1.65 in (1977) |
| December 14 | 63.0°F (2002) | 18.0°F (1972) | 2.71 in (2003) |
| December 15 | 63.0°F (2002) | 18.0°F (1972) | 1.89 in (1981) |
| December 16 | 60.1°F (2006) | 16.0°F (2008) | 2.13 in (2002) |
| December 17 | 61.0°F (1957) | 7.0°F (1964) | 1.32 in (1973) |
| December 18 | 63.0°F (1979) | 12.0°F (1964) | 2.39 in (2025) |
| December 19 | 59.0°F (1953) | 14.0°F (1984) | 2.20 in (1957) |
| December 20 | 63.0°F (1994) | 6.1°F (1990) | 2.42 in (1973) |
| December 21 | 64.0°F (1994) | 1.9°F (1990) | 2.45 in (1964) |
| December 22 | 63.0°F (1980) | 6.1°F (1990) | 2.17 in (1964) |
| December 23 | 60.1°F (1967) | 6.1°F (1983) | 1.40 in (1964) |
| December 24 | 59.0°F (1989) | 9.0°F (1983) | 1.55 in (2007) |
| December 25 | 64.0°F (2005) | 14.0°F (1990) | 1.78 in (1980) |
| December 26 | 63.0°F (1980) | 17.1°F (1985) | 2.18 in (1967) |
| December 27 | 61.0°F (1980) | 0.0°F (2002) | 1.54 in (1974) |
| December 28 | 59.0°F (1980) | 16.0°F (1978) | 2.19 in (1998) |
| December 29 | 57.9°F (1952) | 10.9°F (1978) | 1.67 in (2010) |
| December 30 | 57.9°F (1958) | 9.0°F (1968) | 2.05 in (2005) |
| December 31 | 66.0°F (1980) | 8.1°F (1968) | 1.54 in (2005) |