December weather in Lancaster, CA
The average temperature in Lancaster in December is 43.7°F (29.7°F–57.7°F). Average precipitation: 1.11 inches.
December is a winter month in Lancaster, and is cooler than the annual average of 62.1°F. Daily temperatures swing about 28°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 9h 41m. For travel, December is cool.
Avg High
57.7°F
Avg Low
29.7°F
Precipitation
1.11 in
Daylight
9h 41m
December records in Lancaster
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 75.9°F (2021) | 15.1°F (2004) | 0.09 in (1998) |
| December 2 | 75.0°F (2017) | 17.1°F (2004) | 1.14 in (2014) |
| December 3 | 78.1°F (1977) | 17.1°F (1989) | 0.17 in (1983) |
| December 4 | 75.9°F (1977) | 12.0°F (2006) | 1.09 in (1974) |
| December 5 | 75.9°F (2007) | 12.9°F (2006) | 1.00 in (1997) |
| December 6 | 79.0°F (1977) | 16.0°F (2011) | 1.46 in (2018) |
| December 7 | 71.1°F (1979) | 12.9°F (2011) | 1.88 in (1992) |
| December 8 | 72.0°F (1983) | 10.9°F (1978) | 0.34 in (1991) |
| December 9 | 79.0°F (2015) | 12.0°F (1994) | 0.23 in (2006) |
| December 10 | 73.9°F (1975) | 14.2°F (2013) | 0.31 in (2009) |
| December 11 | 71.1°F (1975) | 15.3°F (2013) | 0.46 in (2022) |
| December 12 | 70.0°F (1988) | 10.9°F (1989) | 1.19 in (2014) |
| December 13 | 75.0°F (2019) | 18.0°F (1989) | 0.22 in (2015) |
| December 14 | 77.0°F (1977) | 17.1°F (1989) | 0.72 in (2021) |
| December 15 | 72.0°F (1981) | 18.0°F (1975) | 0.51 in (2008) |
| December 16 | 75.0°F (1998) | 14.0°F (1975) | 0.76 in (1988) |
| December 17 | 73.9°F (1980) | 17.1°F (1975) | 0.39 in (1977) |
| December 18 | 75.0°F (2025) | 16.2°F (2016) | 1.54 in (1984) |
| December 19 | 78.1°F (2025) | 14.2°F (2016) | 1.36 in (1984) |
| December 20 | 73.9°F (2025) | 10.2°F (2016) | 0.95 in (2010) |
| December 21 | 75.0°F (2025) | 10.0°F (2012) | 0.42 in (2010) |
| December 22 | 75.9°F (2005) | 3.0°F (1990) | 0.97 in (2010) |
| December 23 | 72.0°F (2005) | 3.0°F (1990) | 0.56 in (2016) |
| December 24 | 72.0°F (2005) | 1.9°F (1984) | 2.11 in (2025) |
| December 25 | 73.0°F (2005) | 5.0°F (1990) | 1.84 in (1983) |
| December 26 | 72.0°F (1980) | 12.0°F (1984) | 1.89 in (2019) |
| December 27 | 70.0°F (2005) | 12.9°F (1990) | 1.41 in (1977) |
| December 28 | 73.9°F (2013) | 12.9°F (1990) | 2.46 in (2004) |
| December 29 | 75.0°F (2024) | 18.0°F (1988) | 0.95 in (2004) |
| December 30 | 75.9°F (2011) | 14.2°F (2015) | 1.17 in (2021) |
| December 31 | 72.0°F (2017) | 10.9°F (1990) | 0.53 in (2022) |