December weather in DuPont, WA
The average temperature in DuPont in December is 40.9°F (36.2°F–45.5°F). Average precipitation: 5.81 inches.
December is a winter month in DuPont, and is cooler than the annual average of 51.9°F. Daily temperatures swing about 9.3°F between overnight low and afternoon high. Expect about 20 days with precipitation. Daylight averages about 8h 19m. For travel, December is a wet month.
Avg High
45.5°F
Avg Low
36.2°F
Precipitation
5.81 in
Daylight
8h 19m
December records in DuPont
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 55.0°F (2012) | 24.3°F (2014) | 0.66 in (2001) |
| December 2 | 55.9°F (2003) | 25.2°F (2022) | 1.56 in (2007) |
| December 3 | 57.0°F (2007) | 31.1°F (2009) | 2.21 in (2007) |
| December 4 | 66.0°F (2006) | 25.2°F (2013) | 1.27 in (2023) |
| December 5 | 69.1°F (2006) | 26.2°F (2013) | 2.55 in (2023) |
| December 6 | 54.0°F (2015) | 26.2°F (2013) | 0.25 in (2014) |
| December 7 | 54.0°F (2024) | 21.2°F (2013) | 1.07 in (2015) |
| December 8 | 57.9°F (2015) | 20.1°F (2009) | 2.04 in (2025) |
| December 9 | 60.1°F (2014) | 18.1°F (2009) | 0.99 in (2010) |
| December 10 | 66.9°F (2014) | 19.2°F (2009) | 1.33 in (2025) |
| December 11 | 57.9°F (2014) | 21.2°F (2009) | 1.37 in (2010) |
| December 12 | 60.1°F (2002) | 25.2°F (2009) | 1.54 in (2010) |
| December 13 | 53.1°F (2002) | 27.1°F (2011) | 1.89 in (2001) |
| December 14 | 61.0°F (2002) | 24.3°F (2008) | 1.49 in (2006) |
| December 15 | 57.0°F (2025) | 24.3°F (2008) | 1.84 in (1999) |
| December 16 | 55.0°F (2025) | 23.2°F (2008) | 1.63 in (2001) |
| December 17 | 57.9°F (2024) | 24.3°F (2016) | 1.29 in (2024) |
| December 18 | 57.9°F (2024) | 25.2°F (2008) | 0.81 in (2015) |
| December 19 | 54.0°F (2024) | 22.1°F (2008) | 1.29 in (2019) |
| December 20 | 57.9°F (2018) | 20.1°F (2008) | 2.52 in (2019) |
| December 21 | 55.0°F (2014) | 23.2°F (2022) | 1.62 in (2020) |
| December 22 | 54.0°F (2005) | 21.2°F (2022) | 0.52 in (2000) |
| December 23 | 54.0°F (2024) | 25.2°F (2022) | 1.07 in (2005) |
| December 24 | 57.0°F (2005) | 26.2°F (2020) | 1.06 in (2008) |
| December 25 | 54.0°F (2005) | 28.9°F (2001) | 0.98 in (2005) |
| December 26 | 57.9°F (2022) | 20.1°F (2021) | 1.34 in (2006) |
| December 27 | 54.0°F (2022) | 18.1°F (2021) | 1.18 in (2011) |
| December 28 | 54.0°F (2023) | 23.2°F (2021) | 0.83 in (2017) |
| December 29 | 59.0°F (2023) | 25.2°F (2021) | 1.58 in (2017) |
| December 30 | 52.0°F (2022) | 25.2°F (2010) | 0.91 in (2005) |
| December 31 | 51.1°F (2019) | 18.1°F (2021) | 0.67 in (2019) |