December weather in Seneca, OR
The average temperature in Seneca in December is 23.4°F (11.1°F–35.7°F). Average precipitation: 1.82 inches.
December is a winter month in Seneca, and is cooler than the annual average of 40.5°F. Daily temperatures swing about 24.6°F between overnight low and afternoon high. Expect about 13 days with precipitation. Daylight averages about 8h 42m. For travel, December is cold.
Avg High
35.7°F
Avg Low
11.1°F
Precipitation
1.82 in
Daylight
8h 42m
December records in Seneca
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 59.0°F (1969) | -14.1°F (1931) | 0.62 in (1980) |
| December 2 | 55.9°F (1940) | -16.1°F (1931) | 0.51 in (2012) |
| December 3 | 55.0°F (1959) | -15.0°F (1992) | 0.45 in (1966) |
| December 4 | 55.0°F (1956) | -20.9°F (1992) | 0.30 in (1972) |
| December 5 | 51.1°F (1936) | -32.1°F (1992) | 0.79 in (1966) |
| December 6 | 55.9°F (1938) | -22.0°F (1992) | 0.60 in (1953) |
| December 7 | 59.0°F (2008) | -27.9°F (2013) | 0.49 in (1983) |
| December 8 | 54.0°F (1938) | -36.0°F (1972) | 0.37 in (1997) |
| December 9 | 57.9°F (1942) | -40.0°F (1972) | 0.62 in (1987) |
| December 10 | 53.1°F (1940) | -36.9°F (1972) | 0.53 in (1937) |
| December 11 | 55.0°F (1950) | -35.0°F (1972) | 0.71 in (1937) |
| December 12 | 52.0°F (2017) | -29.0°F (1972) | 0.65 in (1995) |
| December 13 | 48.9°F (1988) | -23.1°F (1967) | 0.33 in (1966) |
| December 14 | 50.0°F (1939) | -36.0°F (1931) | 0.57 in (1983) |
| December 15 | 61.0°F (1999) | -38.0°F (1931) | 0.84 in (1977) |
| December 16 | 52.0°F (1980) | -27.9°F (1967) | 0.52 in (2009) |
| December 17 | 53.1°F (1939) | -33.0°F (1964) | 0.58 in (1972) |
| December 18 | 51.1°F (1955) | -25.1°F (1964) | 0.33 in (1940) |
| December 19 | 55.0°F (1942) | -22.0°F (1984) | 0.79 in (1981) |
| December 20 | 52.0°F (1950) | -23.1°F (1984) | 0.92 in (2014) |
| December 21 | 52.0°F (1940) | -34.1°F (1990) | 0.50 in (2008) |
| December 22 | 54.0°F (1933) | -36.0°F (1990) | 1.00 in (2008) |
| December 23 | 52.0°F (1950) | -47.9°F (1983) | 0.82 in (1964) |
| December 24 | 50.0°F (1950) | -32.1°F (1983) | 0.42 in (1964) |
| December 25 | 63.0°F (1964) | -15.0°F (1912) | 0.61 in (1980) |
| December 26 | 55.9°F (1964) | -18.0°F (1954) | 0.44 in (1940) |
| December 27 | 50.0°F (1932) | -22.0°F (1954) | 0.61 in (1931) |
| December 28 | 51.1°F (1958) | -17.0°F (1982) | 0.46 in (1957) |
| December 29 | 52.0°F (1956) | -34.1°F (1978) | 0.44 in (2010) |
| December 30 | 55.0°F (1980) | -41.1°F (1978) | 0.54 in (2012) |
| December 31 | 51.1°F (1980) | -35.0°F (1978) | 1.16 in (1996) |