December weather in Concord, CA
The average temperature in Concord in December is 49.5°F (40.7°F–58.2°F). Average precipitation: 3.18 inches.
December is a winter month in Concord, and is cooler than the annual average of 62°F. Daily temperatures swing about 17.5°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 9h 23m. For travel, December is a comfortable month to visit.
Avg High
58.2°F
Avg Low
40.7°F
Precipitation
3.18 in
Daylight
9h 23m
December records in Concord
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 71.1°F (2021) | 33.1°F (2004) | 0.78 in (2005) |
| December 2 | 75.0°F (2011) | 32.0°F (2004) | 1.76 in (2012) |
| December 3 | 66.9°F (2007) | 34.0°F (2004) | 1.22 in (2014) |
| December 4 | 70.0°F (2014) | 29.1°F (2013) | 0.31 in (2019) |
| December 5 | 68.0°F (2014) | 25.2°F (2013) | 0.50 in (2010) |
| December 6 | 68.0°F (2014) | 26.2°F (2013) | 0.45 in (2013) |
| December 7 | 73.9°F (2020) | 31.1°F (2013) | 0.68 in (2019) |
| December 8 | 69.1°F (2024) | 28.2°F (2013) | 0.64 in (2010) |
| December 9 | 68.0°F (2015) | 27.0°F (2009) | 0.40 in (2002) |
| December 10 | 70.0°F (2020) | 24.3°F (2013) | 0.98 in (2003) |
| December 11 | 66.9°F (2014) | 27.1°F (2013) | 2.75 in (2014) |
| December 12 | 66.0°F (2017) | 28.2°F (2013) | 0.57 in (2009) |
| December 13 | 64.9°F (2023) | 30.2°F (2013) | 2.04 in (2021) |
| December 14 | 66.9°F (2017) | 30.2°F (2013) | 0.95 in (2002) |
| December 15 | 64.0°F (2016) | 29.1°F (2013) | 1.03 in (2016) |
| December 16 | 66.9°F (2017) | 30.9°F (1999) | 2.12 in (2002) |
| December 17 | 66.9°F (2025) | 30.0°F (2008) | 0.43 in (2010) |
| December 18 | 64.9°F (2013) | 28.0°F (2006) | 1.95 in (2005) |
| December 19 | 73.9°F (1999) | 27.0°F (2006) | 1.47 in (2010) |
| December 20 | 69.1°F (1999) | 28.0°F (2012) | 0.54 in (2001) |
| December 21 | 69.1°F (1999) | 28.9°F (2011) | 0.48 in (2006) |
| December 22 | 70.0°F (1999) | 28.9°F (2007) | 0.84 in (2012) |
| December 23 | 66.9°F (2014) | 28.9°F (2011) | 0.71 in (2021) |
| December 24 | 66.9°F (2013) | 26.1°F (2011) | 0.40 in (2025) |
| December 25 | 64.0°F (1999) | 27.0°F (2011) | 0.66 in (2025) |
| December 26 | 64.9°F (2006) | 28.9°F (2011) | 0.29 in (2006) |
| December 27 | 64.0°F (2017) | 28.2°F (2015) | 1.15 in (2004) |
| December 28 | 66.9°F (1999) | 30.9°F (2003) | 1.24 in (2001) |
| December 29 | 66.0°F (2023) | 32.0°F (2000) | 1.51 in (2003) |
| December 30 | 64.0°F (2016) | 30.0°F (2006) | 0.91 in (2004) |
| December 31 | 64.9°F (2019) | 29.1°F (2015) | 3.04 in (2022) |