Weather on December 21
Federal Way, WA
55 Years of Data
Avg High
46°F
Avg Low
34°F
Warmest
1972
52°F avg
Coldest
1990
15°F avg
About This Date
December 21st in Federal Way, WA typically brings chilly winter weather, with average highs around 46°F and lows near 34°F. Over 55 years of records, the warmest December 21st was in 1972 (52°F average), while the coldest was 1990 (15°F) — a 37°F range across recorded history. Precipitation has occurred on 62% of recorded December 21st dates, with snow falling 2% of the time (heaviest snowfall: 3"). The last decade has been 1.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.7°F warmer on this date compared to 20-30 years ago.
Planning for December 21st in Federal Way, WA? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 49° | 39° | 44° | 0.1" | — |
| 2024 | 52° | 41° | 46° | 0.89" | — |
| 2023 | 49° | 41° | 45° | — | — |
| 2022 | 30° | 23° | 27° | — | — |
| 2021 | 44° | 34° | 39° | 1.14" | — |
| 2020 | 60° | 40° | 50° | 2.84" | — |
| 2019 | 55° | 43° | 49° | 1.75" | — |
| 2018 | 43° | 32° | 37° | 0.05" | — |
| 2017 | 50° | 26° | 38° | — | — |
| 2016 | 50° | 32° | 41° | — | — |
| 2015 | 40° | 37° | 38° | 2.41" | — |
| 2014 | 55° | 40° | 47° | — | — |
| 2013 | 46° | 41° | 44° | 0.38" | — |
| 2012 | 48° | 28° | 38° | — | — |
| 2011 | 44° | 31° | 37° | — | — |
| 2010 | 51° | 37° | 44° | 0.03" | — |
| 2009 | 52° | 41° | 46° | 1.12" | — |
| 2008 | 30° | 22° | 26° | 1.14" | 3" |
| 2007 | 43° | 30° | 36° | — | — |
| 2006 | 52° | 42° | 47° | 1.6" | — |
| 2005 | 50° | 44° | 47° | 1.09" | — |
| 2004 | 48° | 32° | 40° | — | — |
| 2003 | 51° | 43° | 47° | 0.23" | — |
| 2002 | 48° | 41° | 45° | — | — |
| 2001 | 46° | 35° | 41° | — | — |
| 2000 | 48° | 30° | 39° | 0.25" | — |
| 1999 | 46° | 35° | 41° | — | — |
| 1998 | 25° | 17° | 21° | — | — |
| 1997 | 45° | 34° | 39° | 0.13" | — |
| 1996 | 43° | 36° | 39° | 0.25" | — |
| 1995 | 53° | 33° | 43° | — | — |
| 1994 | 54° | 43° | 48° | 0.05" | — |
| 1993 | 42° | 28° | 35° | — | — |
| 1992 | 45° | 40° | 42° | 1.47" | — |
| 1991 | 47° | 34° | 40° | — | — |
| 1990coldest | 21° | 8° | 15° | — | — |
| 1989 | 47° | 34° | 40° | 0.03" | — |
| 1988 | 43° | 32° | 37° | 0.18" | — |
| 1987 | 45° | 35° | 40° | 0.25" | — |
| 1986 | 48° | 39° | 44° | 0.66" | — |
| 1985 | 38° | 25° | 31° | — | — |
| 1984 | 45° | 32° | 38° | — | — |
| 1983 | 25° | 15° | 20° | — | — |
| 1982 | 48° | 34° | 41° | 0.43" | — |
| 1981 | 44° | 31° | 37° | — | — |
| 1980 | 52° | 41° | 46° | 1.88" | — |
| 1979 | 51° | 42° | 47° | 1.63" | — |
| 1978 | 45° | 39° | 42° | 0.03" | — |
| 1977 | 45° | 31° | 38° | 0.03" | — |
| 1976 | 48° | 28° | 38° | 0.08" | — |
| 1975 | 51° | 25° | 38° | 0.05" | — |
| 1974 | 56° | 36° | 46° | 1.4" | — |
| 1973 | 55° | 39° | 47° | 0.1" | — |
| 1972warmest | 58° | 47° | 52° | 2.03" | — |
| 1971 | 41° | 33° | 37° | 1.52" | — |
55 years of data from KENT