December weather in Martinez, CA
The average temperature in Martinez in December is 45.6°F (34.8°F–56.5°F). Average precipitation: 3.81 inches.
December is a winter month in Martinez, and is cooler than the annual average of 58.2°F. Daily temperatures swing about 21.7°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 9h 22m. For travel, December is cool.
Avg High
56.5°F
Avg Low
34.8°F
Precipitation
3.81 in
Daylight
9h 22m
December records in Martinez
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 70.0°F (1995) | 28.9°F (2006) | 1.74 in (1973) |
| December 2 | 73.9°F (2011) | 30.0°F (1990) | 1.89 in (2001) |
| December 3 | 70.0°F (1987) | 28.0°F (2013) | 1.83 in (2014) |
| December 4 | 69.1°F (1977) | 28.0°F (2004) | 1.28 in (1970) |
| December 5 | 70.0°F (1976) | 21.9°F (2013) | 0.83 in (1996) |
| December 6 | 66.0°F (1979) | 24.1°F (2013) | 0.83 in (1987) |
| December 7 | 72.0°F (1988) | 27.0°F (2011) | 1.07 in (1992) |
| December 8 | 71.1°F (1988) | 21.9°F (2013) | 0.75 in (1997) |
| December 9 | 66.0°F (2005) | 19.0°F (2013) | 1.06 in (1992) |
| December 10 | 66.9°F (1987) | 19.9°F (2013) | 0.86 in (1996) |
| December 11 | 66.9°F (1996) | 21.9°F (1972) | 1.04 in (1995) |
| December 12 | 64.0°F (1995) | 25.0°F (1972) | 3.10 in (2014) |
| December 13 | 64.9°F (1988) | 25.0°F (2013) | 1.02 in (2009) |
| December 14 | 66.9°F (1988) | 27.0°F (2013) | 1.62 in (2002) |
| December 15 | 64.0°F (1980) | 27.0°F (2013) | 1.08 in (2014) |
| December 16 | 66.9°F (1982) | 27.0°F (1971) | 1.97 in (2002) |
| December 17 | 66.9°F (2017) | 23.0°F (2008) | 0.97 in (1977) |
| December 18 | 64.0°F (1997) | 24.1°F (2006) | 2.00 in (2005) |
| December 19 | 73.9°F (1999) | 24.1°F (2006) | 1.09 in (2010) |
| December 20 | 66.9°F (1999) | 25.0°F (2006) | 1.49 in (1981) |
| December 21 | 70.0°F (1999) | 21.9°F (1990) | 1.10 in (1996) |
| December 22 | 68.0°F (1999) | 19.0°F (1990) | 1.40 in (1982) |
| December 23 | 64.0°F (2004) | 21.0°F (1990) | 1.18 in (1977) |
| December 24 | 64.9°F (2014) | 21.0°F (1990) | 1.42 in (1979) |
| December 25 | 66.0°F (2013) | 24.1°F (1990) | 1.83 in (1979) |
| December 26 | 64.0°F (1996) | 25.0°F (1990) | 0.73 in (2012) |
| December 27 | 68.0°F (1975) | 25.0°F (2015) | 0.85 in (1996) |
| December 28 | 68.0°F (1975) | 25.0°F (2013) | 1.24 in (2004) |
| December 29 | 66.9°F (1989) | 27.0°F (1990) | 1.22 in (1992) |
| December 30 | 66.0°F (1975) | 24.1°F (1990) | 1.82 in (2003) |
| December 31 | 68.0°F (1996) | 26.1°F (2015) | 3.68 in (2005) |