December weather in Mossyrock, WA
The average temperature in Mossyrock in December is 38.9°F (33.5°F–44.4°F). Average precipitation: 8.13 inches. Average snowfall is 1.0 inches.
December is a winter month in Mossyrock, and is cooler than the annual average of 51.6°F. Daily temperatures swing about 10.9°F between overnight low and afternoon high. Expect about 20 days with precipitation. Daylight averages about 8h 23m. For travel, December is a wet month.
Avg High
44.4°F
Avg Low
33.5°F
Precipitation
8.13 in
Snow
1.0 in
December records in Mossyrock
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 55.9°F (2012) | 19.9°F (2014) | 1.49 in (2003) |
| December 2 | 57.0°F (2021) | 21.9°F (2014) | 1.90 in (2023) |
| December 3 | 52.0°F (2015) | 24.1°F (2014) | 2.32 in (2007) |
| December 4 | 57.9°F (2015) | 25.0°F (2013) | 2.00 in (2023) |
| December 5 | 60.1°F (2023) | 21.0°F (2013) | 1.16 in (1981) |
| December 6 | 55.9°F (2021) | 21.0°F (2013) | 2.00 in (2023) |
| December 7 | 52.0°F (2015) | 19.0°F (2013) | 1.90 in (2025) |
| December 8 | 55.9°F (2025) | 12.0°F (2013) | 1.31 in (2015) |
| December 9 | 57.9°F (2014) | 15.1°F (2013) | 3.60 in (2015) |
| December 10 | 60.1°F (2014) | 19.9°F (2013) | 2.12 in (1987) |
| December 11 | 64.0°F (2014) | 26.1°F (2011) | 1.60 in (2015) |
| December 12 | 60.1°F (2014) | 25.0°F (2011) | 1.70 in (2021) |
| December 13 | 60.1°F (2014) | 23.0°F (2011) | 2.56 in (2021) |
| December 14 | 57.0°F (2025) | 21.9°F (2011) | 1.93 in (1998) |
| December 15 | 57.0°F (2025) | 28.0°F (2011) | 1.77 in (2006) |
| December 16 | 57.9°F (2025) | 27.0°F (2022) | 1.80 in (2002) |
| December 17 | 55.9°F (2025) | 21.0°F (2016) | 2.11 in (2001) |
| December 18 | 55.9°F (2024) | 23.0°F (2016) | 1.60 in (2015) |
| December 19 | 54.0°F (2024) | 26.1°F (2016) | 1.55 in (2021) |
| December 20 | 59.0°F (2018) | 28.9°F (2013) | 1.70 in (2019) |
| December 21 | 59.0°F (2018) | 28.0°F (2017) | 1.51 in (2014) |
| December 22 | 57.9°F (2020) | 23.0°F (2022) | 1.02 in (1980) |
| December 23 | 52.0°F (2024) | 23.0°F (2022) | 0.80 in (2017) |
| December 24 | 54.0°F (2024) | 23.0°F (2022) | 1.71 in (2007) |
| December 25 | 57.0°F (2024) | 28.0°F (2015) | 1.62 in (1996) |
| December 26 | 57.9°F (2022) | 30.0°F (2013) | 1.07 in (2022) |
| December 27 | 57.9°F (2014) | 21.9°F (2021) | 1.92 in (1994) |
| December 28 | 53.1°F (2022) | 19.9°F (2021) | 2.73 in (1998) |
| December 29 | 55.0°F (2023) | 26.1°F (2021) | 1.95 in (2017) |
| December 30 | 59.0°F (2023) | 26.1°F (2021) | 1.31 in (1996) |
| December 31 | 57.9°F (2023) | 24.1°F (2014) | 1.04 in (2002) |