Weather on May 21
Federal Way, WA
55 Years of Data
Avg High
68°F
Avg Low
47°F
Warmest
2015
66°F avg
Coldest
2010
49°F avg
About This Date
May 21st in Federal Way, WA typically brings mild spring weather, with average highs around 68°F and lows near 47°F. Over 55 years of records, the warmest May 21st was in 2015 (66°F average), while the coldest was 2010 (49°F) — a 17°F range across recorded history. Rain or other precipitation has occurred on about 44% of May 21st dates historically, with the wettest May 21st recording 1.52" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for May 21st in Federal Way, WA? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 62° | 46° | 54° | — | — |
| 2024 | 59° | 47° | 53° | 1.42" | — |
| 2023 | 70° | 53° | 61° | — | — |
| 2022 | 66° | 43° | 54° | — | — |
| 2021 | 61° | 45° | 53° | — | — |
| 2020 | 59° | 47° | 53° | 0.38" | — |
| 2019 | 64° | 50° | 57° | 0.05" | — |
| 2018 | 68° | 56° | 62° | — | — |
| 2017 | 78° | 52° | 65° | — | — |
| 2016 | 65° | 49° | 57° | 0.66" | — |
| 2015warmest | 78° | 53° | 66° | — | — |
| 2014 | 72° | 53° | 62° | — | — |
| 2013 | 66° | 45° | 55° | 1.52" | — |
| 2012 | 62° | 54° | 58° | 1.52" | — |
| 2011 | 71° | 44° | 58° | 0.03" | — |
| 2010coldest | 54° | 44° | 49° | 0.91" | — |
| 2009 | 67° | 45° | 56° | — | — |
| 2008 | 58° | 48° | 53° | 0.25" | — |
| 2007 | 64° | 47° | 55° | 1.17" | — |
| 2006 | 68° | 50° | 59° | 0.08" | — |
| 2005 | 63° | 44° | 53° | 0.46" | — |
| 2004 | 66° | 51° | 59° | — | — |
| 2003 | 69° | 53° | 61° | 0.08" | — |
| 2002 | 65° | 49° | 57° | 0.05" | — |
| 2001 | 76° | 46° | 61° | — | — |
| 2000 | 69° | 55° | 62° | 0.46" | — |
| 1999 | 65° | 47° | 56° | — | — |
| 1998 | 63° | 52° | 57° | 0.05" | — |
| 1997 | 67° | 49° | 58° | — | — |
| 1996 | 58° | 44° | 51° | 0.2" | — |
| 1995 | 75° | 50° | 63° | — | — |
| 1994 | 66° | 52° | 59° | — | — |
| 1993 | 72° | 50° | 61° | 0.69" | — |
| 1992 | 68° | 40° | 54° | — | — |
| 1991 | 63° | 50° | 56° | — | — |
| 1990 | 65° | 52° | 58° | 0.43" | — |
| 1989 | 64° | 39° | 52° | — | — |
| 1988 | 85° | 45° | 65° | — | — |
| 1987 | 71° | 40° | 55° | — | — |
| 1986 | 60° | 44° | 52° | 0.03" | — |
| 1985 | 70° | 42° | 56° | — | — |
| 1984 | 64° | 39° | 52° | — | — |
| 1983 | 78° | 51° | 65° | — | — |
| 1982 | 74° | 43° | 58° | — | — |
| 1981 | 60° | 47° | 53° | 0.03" | — |
| 1980 | 61° | 50° | 55° | 0.33" | — |
| 1979 | 76° | 45° | 60° | — | — |
| 1978 | 84° | 46° | 65° | — | — |
| 1977 | 67° | 48° | 57° | 0.13" | — |
| 1976 | 71° | 42° | 57° | — | — |
| 1975 | 67° | 38° | 52° | — | — |
| 1974 | 68° | 39° | 54° | — | — |
| 1973 | 68° | 37° | 53° | — | — |
| 1972 | 77° | 53° | 65° | 0.18" | — |
| 1971 | 68° | — | — | — | — |
55 years of data from KENT