December weather in Sebastopol, CA
The average temperature in Sebastopol in December is 47.2°F (36.8°F–57.7°F). Average precipitation: 8.34 inches.
December is a winter month in Sebastopol, and is cooler than the annual average of 57.9°F. Daily temperatures swing about 20.9°F between overnight low and afternoon high. Expect about 13 days with precipitation. Daylight averages about 9h 20m. For travel, December is a wet month.
Avg High
57.7°F
Avg Low
36.8°F
Precipitation
8.34 in
Daylight
9h 20m
December records in Sebastopol
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 75.0°F (2013) | 21.9°F (2007) | 3.64 in (1951) |
| December 2 | 75.9°F (2013) | 25.0°F (1990) | 2.80 in (1926) |
| December 3 | 81.0°F (2011) | 25.0°F (1929) | 5.32 in (1950) |
| December 4 | 73.9°F (1927) | 23.0°F (2013) | 3.94 in (1970) |
| December 5 | 77.0°F (1929) | 19.9°F (2013) | 2.53 in (1996) |
| December 6 | 75.0°F (1934) | 19.9°F (2013) | 2.32 in (1955) |
| December 7 | 77.0°F (2020) | 25.0°F (1956) | 3.72 in (1952) |
| December 8 | 73.9°F (2020) | 19.0°F (2009) | 3.31 in (2004) |
| December 9 | 75.0°F (1988) | 15.1°F (1972) | 3.12 in (1992) |
| December 10 | 80.1°F (1926) | 16.0°F (1972) | 4.40 in (1937) |
| December 11 | 75.0°F (1958) | 16.0°F (1972) | 3.15 in (1995) |
| December 12 | 77.0°F (1958) | 17.1°F (1972) | 5.83 in (1995) |
| December 13 | 70.0°F (1956) | 17.1°F (1932) | 4.20 in (2021) |
| December 14 | 70.0°F (1942) | 18.0°F (1932) | 4.25 in (2002) |
| December 15 | 68.0°F (1988) | 19.9°F (1932) | 3.25 in (1977) |
| December 16 | 71.1°F (1998) | 24.1°F (1978) | 2.18 in (2002) |
| December 17 | 72.0°F (2011) | 23.0°F (2008) | 2.55 in (1972) |
| December 18 | 70.0°F (1996) | 24.1°F (2006) | 2.58 in (1940) |
| December 19 | 70.0°F (1929) | 21.9°F (2006) | 6.70 in (1981) |
| December 20 | 77.0°F (1999) | 19.9°F (1967) | 3.73 in (1969) |
| December 21 | 71.1°F (1999) | 16.0°F (1990) | 3.20 in (1940) |
| December 22 | 75.0°F (1999) | 14.0°F (1990) | 5.20 in (1955) |
| December 23 | 72.0°F (1999) | 14.0°F (1990) | 3.26 in (1942) |
| December 24 | 71.1°F (2013) | 16.0°F (1990) | 4.46 in (1979) |
| December 25 | 75.0°F (2013) | 21.0°F (1990) | 2.85 in (1983) |
| December 26 | 78.1°F (1967) | 23.0°F (1962) | 2.53 in (1936) |
| December 27 | 73.9°F (1967) | 23.0°F (2015) | 4.28 in (1945) |
| December 28 | 73.0°F (1967) | 24.1°F (1990) | 3.50 in (2005) |
| December 29 | 75.0°F (2013) | 21.9°F (1990) | 3.40 in (1933) |
| December 30 | 70.0°F (1967) | 18.0°F (1990) | 1.85 in (2003) |
| December 31 | 68.0°F (1956) | 19.0°F (1990) | 4.48 in (2005) |