December weather in Lynnwood, WA
The average temperature in Lynnwood in December is 40.3°F (36.0°F–44.6°F). Average precipitation: 4.52 inches.
December is a winter month in Lynnwood, and is cooler than the annual average of 51.4°F. Daily temperatures swing about 8.6°F between overnight low and afternoon high. Expect about 19 days with precipitation. Daylight averages about 8h 12m. For travel, December is cold.
Avg High
44.6°F
Avg Low
36.0°F
Precipitation
4.52 in
Daylight
8h 12m
December records in Lynnwood
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 55.9°F (2008) | 24.3°F (2014) | 0.98 in (1998) |
| December 2 | 59.0°F (2020) | 25.2°F (2014) | 1.46 in (2007) |
| December 3 | 55.9°F (2007) | 27.1°F (2013) | 2.86 in (2007) |
| December 4 | 59.0°F (2023) | 25.2°F (2013) | 0.62 in (2023) |
| December 5 | 59.0°F (2020) | 25.2°F (2013) | 1.18 in (2023) |
| December 6 | 55.9°F (2019) | 22.1°F (2013) | 0.70 in (2015) |
| December 7 | 55.0°F (2014) | 18.1°F (2013) | 1.16 in (2024) |
| December 8 | 59.0°F (2015) | 18.1°F (2013) | 1.22 in (2015) |
| December 9 | 59.0°F (2014) | 20.1°F (2009) | 0.68 in (1950) |
| December 10 | 62.1°F (2014) | 17.2°F (2009) | 0.95 in (2014) |
| December 11 | 55.0°F (2014) | 21.2°F (2009) | 0.94 in (2006) |
| December 12 | 55.0°F (2010) | 23.2°F (2009) | 0.96 in (2010) |
| December 13 | 57.9°F (2025) | 26.1°F (2000) | 0.60 in (2001) |
| December 14 | 55.0°F (2002) | 24.3°F (2008) | 1.14 in (2002) |
| December 15 | 57.9°F (2025) | 18.1°F (2008) | 0.53 in (1950) |
| December 16 | 52.0°F (2025) | 18.1°F (2008) | 1.35 in (2001) |
| December 17 | 53.1°F (1950) | 24.3°F (2016) | 0.63 in (2015) |
| December 18 | 57.9°F (2003) | 19.2°F (2008) | 1.13 in (2021) |
| December 19 | 59.0°F (2024) | 12.2°F (2008) | 1.37 in (2012) |
| December 20 | 59.0°F (2024) | 10.2°F (2008) | 1.73 in (2019) |
| December 21 | 60.1°F (2024) | 16.2°F (2022) | 1.99 in (2020) |
| December 22 | 55.0°F (1950) | 16.0°F (1998) | 0.63 in (2023) |
| December 23 | 57.9°F (1950) | 19.9°F (1998) | 0.84 in (2007) |
| December 24 | 57.9°F (2005) | 23.0°F (1948) | 1.04 in (2006) |
| December 25 | 57.0°F (2013) | 25.0°F (1951) | 0.75 in (2005) |
| December 26 | 55.9°F (2022) | 18.1°F (2021) | 1.16 in (2006) |
| December 27 | 55.0°F (2023) | 13.1°F (2021) | 1.40 in (2022) |
| December 28 | 54.0°F (2011) | 21.2°F (2021) | 0.67 in (2014) |
| December 29 | 62.1°F (2023) | 19.2°F (2021) | 0.80 in (2017) |
| December 30 | 55.9°F (2023) | 21.0°F (1951) | 0.57 in (2005) |
| December 31 | 52.0°F (2019) | 14.0°F (1951) | 0.46 in (1948) |