December weather in Mendota, CA
The average temperature in Mendota in December is 46.9°F (37.6°F–56.3°F). Average precipitation: 1.82 inches.
December is a winter month in Mendota, and is cooler than the annual average of 63.3°F. Daily temperatures swing about 18.7°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 9h 30m. For travel, December is cool.
Avg High
56.3°F
Avg Low
37.6°F
Precipitation
1.82 in
Daylight
9h 30m
December records in Mendota
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 73.9°F (2014) | 27.0°F (2004) | 0.93 in (2019) |
| December 2 | 73.0°F (2021) | 27.0°F (2004) | 0.49 in (2014) |
| December 3 | 75.0°F (2014) | 26.2°F (2011) | 0.57 in (2022) |
| December 4 | 69.1°F (2014) | 24.3°F (2013) | 0.13 in (2019) |
| December 5 | 69.1°F (2020) | 19.2°F (2013) | 0.26 in (2003) |
| December 6 | 73.9°F (2023) | 24.3°F (2013) | 0.24 in (2007) |
| December 7 | 68.0°F (2014) | 28.2°F (2011) | 0.62 in (2007) |
| December 8 | 75.9°F (2006) | 25.2°F (2013) | 0.39 in (2016) |
| December 9 | 68.0°F (2006) | 21.2°F (2013) | 0.25 in (2006) |
| December 10 | 66.9°F (2010) | 21.2°F (2013) | 0.48 in (2022) |
| December 11 | 64.9°F (2014) | 26.2°F (2013) | 0.56 in (2009) |
| December 12 | 68.0°F (2019) | 24.3°F (2013) | 1.32 in (2014) |
| December 13 | 64.9°F (2016) | 26.2°F (2013) | 0.34 in (2002) |
| December 14 | 68.0°F (2016) | 28.0°F (1999) | 0.35 in (2008) |
| December 15 | 68.0°F (2023) | 28.2°F (2013) | 0.79 in (2016) |
| December 16 | 70.0°F (2023) | 28.9°F (1999) | 0.67 in (2002) |
| December 17 | 66.9°F (2023) | 28.2°F (2011) | 0.53 in (2010) |
| December 18 | 64.9°F (2013) | 28.2°F (2006) | 0.77 in (2007) |
| December 19 | 70.0°F (2023) | 27.1°F (2012) | 0.60 in (2010) |
| December 20 | 69.1°F (2005) | 25.2°F (2013) | 0.61 in (2023) |
| December 21 | 68.0°F (2025) | 19.0°F (1998) | 0.46 in (2009) |
| December 22 | 68.0°F (2005) | 21.0°F (1998) | 0.68 in (2015) |
| December 23 | 70.0°F (2024) | 19.0°F (1998) | 0.51 in (2012) |
| December 24 | 66.9°F (2025) | 19.9°F (1998) | 0.66 in (2025) |
| December 25 | 66.9°F (2013) | 24.1°F (1998) | 0.54 in (2010) |
| December 26 | 66.9°F (2013) | 25.2°F (2011) | 0.49 in (2005) |
| December 27 | 69.1°F (1999) | 25.2°F (2011) | 0.52 in (2022) |
| December 28 | 70.0°F (2023) | 27.0°F (1998) | 0.83 in (2010) |
| December 29 | 69.1°F (2023) | 28.0°F (1998) | 0.41 in (2010) |
| December 30 | 64.0°F (2013) | 25.0°F (2000) | 0.45 in (2004) |
| December 31 | 66.9°F (2017) | 26.2°F (2014) | 1.02 in (2004) |