December weather in American Canyon, CA
The average temperature in American Canyon in December is 47.5°F (37.6°F–57.3°F). Average precipitation: 3.82 inches.
December is a winter month in American Canyon, and is cooler than the annual average of 57.7°F. Daily temperatures swing about 19.7°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 9h 21m. For travel, December is cool.
Avg High
57.3°F
Avg Low
37.6°F
Precipitation
3.82 in
Daylight
9h 21m
December records in American Canyon
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 69.1°F (2011) | 19.9°F (2007) | 1.45 in (2005) |
| December 2 | 75.0°F (2011) | 24.1°F (2004) | 1.19 in (2012) |
| December 3 | 66.9°F (2020) | 28.0°F (2004) | 1.18 in (2014) |
| December 4 | 70.0°F (2020) | 21.9°F (2004) | 0.55 in (2014) |
| December 5 | 66.9°F (2023) | 16.2°F (2013) | 0.61 in (2010) |
| December 6 | 66.9°F (2024) | 20.1°F (2013) | 0.74 in (2007) |
| December 7 | 78.1°F (2020) | 21.9°F (2009) | 0.58 in (2004) |
| December 8 | 71.1°F (2020) | 19.0°F (2009) | 1.00 in (2004) |
| December 9 | 70.0°F (2012) | 19.2°F (2013) | 0.41 in (2002) |
| December 10 | 66.0°F (2017) | 21.2°F (2013) | 0.96 in (2022) |
| December 11 | 66.0°F (2017) | 25.2°F (2013) | 3.17 in (2014) |
| December 12 | 64.0°F (2018) | 26.2°F (2013) | 0.95 in (2021) |
| December 13 | 62.1°F (2023) | 24.1°F (2007) | 2.44 in (2002) |
| December 14 | 63.0°F (2017) | 24.1°F (2007) | 1.27 in (2024) |
| December 15 | 66.0°F (2023) | 26.1°F (2005) | 2.39 in (2016) |
| December 16 | 70.0°F (2023) | 28.0°F (2005) | 1.13 in (2002) |
| December 17 | 66.0°F (2000) | 24.1°F (2008) | 0.42 in (2010) |
| December 18 | 63.0°F (2017) | 21.0°F (2006) | 2.18 in (2005) |
| December 19 | 78.1°F (1999) | 21.0°F (2006) | 1.27 in (2002) |
| December 20 | 66.9°F (1999) | 25.0°F (2008) | 1.11 in (2010) |
| December 21 | 71.1°F (1999) | 21.0°F (1998) | 0.75 in (2015) |
| December 22 | 68.0°F (1999) | 19.0°F (1998) | 0.83 in (2005) |
| December 23 | 66.0°F (2004) | 19.9°F (2011) | 0.76 in (2021) |
| December 24 | 64.9°F (2013) | 19.0°F (1998) | 1.07 in (2025) |
| December 25 | 64.9°F (2013) | 24.1°F (1998) | 0.97 in (2010) |
| December 26 | 66.9°F (2013) | 24.1°F (2011) | 0.55 in (2024) |
| December 27 | 66.9°F (1999) | 25.2°F (2015) | 2.14 in (2004) |
| December 28 | 64.0°F (1999) | 24.3°F (2013) | 1.16 in (2010) |
| December 29 | 64.0°F (2013) | 25.2°F (2015) | 1.50 in (2003) |
| December 30 | 63.0°F (2013) | 26.2°F (2015) | 1.45 in (2005) |
| December 31 | 64.0°F (2020) | 24.3°F (2015) | 1.98 in (2005) |