December weather in Pacifica, CA
The average temperature in Pacifica in December is 52.5°F (46.2°F–58.8°F). Average precipitation: 6.64 inches.
December is a winter month in Pacifica, and is cooler than the annual average of 57.4°F. Daily temperatures swing about 12.6°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 9h 25m. For travel, December is a wet month.
Avg High
58.8°F
Avg Low
46.2°F
Precipitation
6.64 in
Daylight
9h 25m
December records in Pacifica
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 64.9°F (1989) | 43.0°F (1984) | 1.48 in (2005) |
| December 2 | 68.0°F (2011) | 42.1°F (1990) | 1.34 in (1984) |
| December 3 | 64.9°F (2007) | 43.0°F (1996) | 1.07 in (1983) |
| December 4 | 64.9°F (1989) | 42.1°F (1983) | 0.99 in (1987) |
| December 5 | 66.0°F (2006) | 39.0°F (1983) | 1.17 in (1996) |
| December 6 | 66.0°F (2006) | 41.0°F (1998) | 1.19 in (1987) |
| December 7 | 66.0°F (2006) | 39.9°F (1998) | 2.70 in (2004) |
| December 8 | 66.0°F (2006) | 39.0°F (1994) | 1.95 in (2004) |
| December 9 | 64.9°F (1990) | 37.9°F (1994) | 1.45 in (1992) |
| December 10 | 64.9°F (2000) | 39.0°F (2009) | 2.33 in (1996) |
| December 11 | 64.9°F (2008) | 37.9°F (1985) | 3.70 in (1995) |
| December 12 | 64.9°F (1988) | 36.0°F (1985) | 3.12 in (1995) |
| December 13 | 62.1°F (1988) | 36.0°F (1985) | 3.67 in (2002) |
| December 14 | 63.0°F (1988) | 37.9°F (1987) | 2.72 in (2002) |
| December 15 | 61.0°F (1998) | 41.0°F (1984) | 1.05 in (1984) |
| December 16 | 73.0°F (1998) | 39.0°F (1990) | 2.83 in (2002) |
| December 17 | 73.0°F (1998) | 39.9°F (1984) | 1.30 in (2005) |
| December 18 | 73.9°F (1998) | 37.0°F (1992) | 2.03 in (2005) |
| December 19 | 68.0°F (1999) | 37.9°F (1990) | 1.80 in (2002) |
| December 20 | 70.0°F (1999) | 35.1°F (1990) | 1.32 in (2007) |
| December 21 | 70.0°F (1999) | 26.1°F (1990) | 2.35 in (1996) |
| December 22 | 69.1°F (1999) | 23.0°F (1990) | 1.75 in (2005) |
| December 23 | 69.1°F (1999) | 27.0°F (1990) | 0.32 in (2003) |
| December 24 | 66.9°F (2000) | 30.9°F (1990) | 1.38 in (1983) |
| December 25 | 66.9°F (2006) | 35.1°F (1984) | 2.25 in (1983) |
| December 26 | 66.9°F (2010) | 34.0°F (2000) | 1.03 in (2005) |
| December 27 | 66.0°F (2010) | 37.9°F (1988) | 5.00 in (2004) |
| December 28 | 68.0°F (1999) | 33.1°F (2000) | 1.50 in (2010) |
| December 29 | 68.0°F (1999) | 28.0°F (2000) | 3.88 in (2003) |
| December 30 | 64.0°F (1998) | 21.9°F (2000) | 0.85 in (2004) |
| December 31 | 64.0°F (1998) | 30.9°F (2000) | 3.40 in (2005) |