December weather in Tracy, CA
The average temperature in Tracy in December is 46.4°F (36.4°F–56.3°F). Average precipitation: 2.32 inches.
December is a winter month in Tracy, and is cooler than the annual average of 61°F. Daily temperatures swing about 19.9°F between overnight low and afternoon high. Daylight averages about 9h 24m. For travel, December is cool.
Avg High
56.3°F
Avg Low
36.4°F
Precipitation
2.32 in
Daylight
9h 24m
December records in Tracy
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 73.0°F (1995) | 27.0°F (2015) | 0.64 in (2014) |
| December 2 | 70.0°F (2021) | 26.1°F (2022) | 0.81 in (1952) |
| December 3 | 69.1°F (1977) | 27.0°F (1957) | 1.16 in (1974) |
| December 4 | 73.0°F (1996) | 27.0°F (1988) | 0.61 in (1980) |
| December 5 | 69.1°F (1958) | 26.1°F (2013) | 1.01 in (1909) |
| December 6 | 71.1°F (1986) | 23.0°F (2013) | 0.64 in (1966) |
| December 7 | 70.0°F (1986) | 25.0°F (2009) | 0.90 in (1950) |
| December 8 | 72.0°F (1986) | 26.1°F (1960) | 0.80 in (1909) |
| December 9 | 71.1°F (2020) | 21.0°F (1972) | 1.09 in (1955) |
| December 10 | 66.9°F (1992) | 21.9°F (2009) | 0.87 in (1954) |
| December 11 | 69.1°F (2020) | 25.0°F (1972) | 1.05 in (1906) |
| December 12 | 70.0°F (1958) | 21.9°F (1972) | 2.33 in (2014) |
| December 13 | 70.0°F (1958) | 23.0°F (1972) | 0.44 in (1913) |
| December 14 | 69.1°F (1969) | 27.0°F (1967) | 0.84 in (1915) |
| December 15 | 66.0°F (1998) | 26.1°F (1980) | 0.60 in (2014) |
| December 16 | 66.0°F (1998) | 24.1°F (1978) | 1.77 in (2002) |
| December 17 | 68.0°F (1958) | 24.1°F (1967) | 0.98 in (2018) |
| December 18 | 64.9°F (1958) | 24.1°F (1965) | 0.40 in (2007) |
| December 19 | 66.0°F (1998) | 21.9°F (2016) | 0.83 in (1970) |
| December 20 | 69.1°F (1981) | 19.9°F (2012) | 0.93 in (2002) |
| December 21 | 66.0°F (1969) | 19.9°F (1990) | 0.55 in (1970) |
| December 22 | 68.0°F (2014) | 18.0°F (1990) | 0.73 in (1982) |
| December 23 | 71.1°F (1996) | 18.0°F (1998) | 1.40 in (1955) |
| December 24 | 64.9°F (1964) | 17.1°F (1998) | 1.55 in (2012) |
| December 25 | 70.0°F (1964) | 21.9°F (1990) | 0.68 in (1971) |
| December 26 | 64.9°F (1964) | 26.1°F (1990) | 0.58 in (1968) |
| December 27 | 66.9°F (1967) | 24.1°F (1990) | 1.15 in (1973) |
| December 28 | 68.0°F (1953) | 24.1°F (1998) | 0.80 in (2021) |
| December 29 | 66.9°F (1967) | 23.0°F (1962) | 1.44 in (2001) |
| December 30 | 66.9°F (2024) | 21.9°F (1978) | 0.71 in (1981) |
| December 31 | 68.0°F (1995) | 17.1°F (1978) | 1.04 in (2023) |