December weather in Benicia, CA
The average temperature in Benicia in December is 49.8°F (42.0°F–57.6°F). Average precipitation: 4.49 inches.
December is a winter month in Benicia, and is cooler than the annual average of 61.6°F. Daily temperatures swing about 15.6°F between overnight low and afternoon high. Daylight averages about 9h 22m. For travel, December is a comfortable month to visit.
Avg High
57.6°F
Avg Low
42.0°F
Precipitation
4.49 in
Daylight
9h 22m
December records in Benicia
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 66.0°F (2021) | 37.0°F (2000) | 1.02 in (2003) |
| December 2 | 69.1°F (2002) | 34.0°F (2022) | 0.54 in (2019) |
| December 3 | 69.1°F (2025) | 39.0°F (1999) | 2.00 in (2001) |
| December 4 | 68.0°F (2023) | 33.1°F (1998) | 0.36 in (2022) |
| December 5 | 69.1°F (2017) | 30.9°F (1998) | 0.46 in (2018) |
| December 6 | 68.0°F (2024) | 32.0°F (2005) | 0.23 in (1998) |
| December 7 | 75.0°F (2020) | 30.9°F (1998) | 0.47 in (2023) |
| December 8 | 73.0°F (2020) | 30.0°F (1998) | 0.37 in (2016) |
| December 9 | 69.1°F (2024) | 36.0°F (1998) | 0.54 in (1999) |
| December 10 | 64.9°F (2020) | 34.0°F (1999) | 1.02 in (1999) |
| December 11 | 66.0°F (2023) | 37.9°F (1998) | 0.35 in (2022) |
| December 12 | 66.0°F (2023) | 36.0°F (2001) | 0.74 in (2022) |
| December 13 | 69.1°F (2005) | 35.1°F (2022) | 1.97 in (2021) |
| December 14 | 64.9°F (2018) | 35.1°F (2005) | 1.05 in (2024) |
| December 15 | 64.9°F (1998) | 33.1°F (2003) | 0.93 in (2016) |
| December 16 | 66.9°F (1998) | 32.0°F (1999) | 0.93 in (2021) |
| December 17 | 66.0°F (1998) | 33.1°F (2001) | 1.52 in (2001) |
| December 18 | 66.0°F (2000) | 33.1°F (2016) | 0.39 in (2019) |
| December 19 | 77.0°F (1999) | 34.0°F (2016) | 0.23 in (2015) |
| December 20 | 68.0°F (1999) | 34.0°F (1998) | 1.80 in (2002) |
| December 21 | 66.9°F (1999) | 23.0°F (1998) | 1.01 in (2015) |
| December 22 | 69.1°F (1999) | 24.1°F (1998) | 0.64 in (2025) |
| December 23 | 66.9°F (1999) | 24.1°F (1998) | 1.16 in (2021) |
| December 24 | 64.9°F (1999) | 25.0°F (1998) | 0.82 in (2021) |
| December 25 | 64.0°F (1999) | 26.1°F (1998) | 0.86 in (2025) |
| December 26 | 64.9°F (2017) | 32.0°F (1998) | 0.37 in (2025) |
| December 27 | 63.0°F (2005) | 33.1°F (1998) | 1.03 in (2022) |
| December 28 | 66.9°F (1999) | 34.0°F (2015) | 1.40 in (2005) |
| December 29 | 62.1°F (2020) | 32.0°F (2025) | 1.60 in (2005) |
| December 30 | 64.0°F (2016) | 36.0°F (1998) | 3.00 in (2022) |
| December 31 | 64.0°F (2019) | 34.0°F (2015) | 2.00 in (2022) |