Weather on May 18
Federal Way, WA
55 Years of Data
Avg High
67°F
Avg Low
47°F
Warmest
2008
70°F avg
Coldest
2003
49°F avg
About This Date
May 18th in Federal Way, WA typically brings mild spring weather, with average highs around 67°F and lows near 47°F. Over 55 years of records, the warmest May 18th was in 2008 (70°F average), while the coldest was 2003 (49°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 40% of May 18th dates historically, with the wettest May 18th recording 1.45" of rain. The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
Planning for May 18th in Federal Way, WA? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 63° | 47° | 55° | — | — |
| 2024 | 59° | 47° | 53° | 0.13" | — |
| 2023 | 77° | 57° | 67° | — | — |
| 2022 | 61° | 47° | 54° | 0.46" | — |
| 2021 | 60° | 46° | 53° | 0.25" | — |
| 2020 | 66° | 50° | 58° | — | — |
| 2019 | 68° | 51° | 60° | — | — |
| 2018 | 85° | 55° | 70° | — | — |
| 2017 | 65° | 49° | 57° | 0.13" | — |
| 2016 | 68° | 52° | 60° | — | — |
| 2015 | 76° | 53° | 64° | — | — |
| 2014 | 68° | 53° | 61° | — | — |
| 2013 | 60° | 52° | 56° | — | — |
| 2012 | 68° | 46° | 57° | — | — |
| 2011 | 67° | 43° | 55° | — | — |
| 2010 | 73° | 47° | 60° | 0.3" | — |
| 2009 | 66° | 48° | 57° | 1.14" | — |
| 2008warmest | 87° | 54° | 70° | — | — |
| 2007 | 70° | 45° | 57° | — | — |
| 2006 | 77° | 54° | 65° | — | — |
| 2005 | 68° | 52° | 60° | 1.45" | — |
| 2004 | 74° | 52° | 63° | — | — |
| 2003coldest | 60° | 37° | 49° | — | — |
| 2002 | 64° | 50° | 57° | 0.43" | — |
| 2001 | 64° | 47° | 55° | — | — |
| 2000 | 65° | 49° | 57° | 0.13" | — |
| 1999 | 62° | 50° | 56° | 0.25" | — |
| 1998 | 64° | 51° | 58° | 0.03" | — |
| 1997 | 75° | 48° | 62° | — | — |
| 1996 | 63° | 50° | 56° | 1.19" | — |
| 1995 | 62° | 48° | 55° | — | — |
| 1994 | 67° | 50° | 58° | — | — |
| 1993 | 80° | 47° | 63° | — | — |
| 1992 | 80° | 50° | 65° | — | — |
| 1991 | 54° | 48° | 51° | 0.51" | — |
| 1990 | 60° | 43° | 51° | — | — |
| 1989 | 58° | 42° | 50° | 0.18" | — |
| 1988 | 60° | 46° | 53° | 0.2" | — |
| 1987 | 63° | 38° | 50° | — | — |
| 1986 | 66° | 44° | 55° | 0.1" | — |
| 1985 | 74° | 44° | 59° | — | — |
| 1984 | 67° | 45° | 56° | — | — |
| 1983 | 67° | 49° | 58° | 0.05" | — |
| 1982 | 60° | 46° | 53° | 0.05" | — |
| 1981 | 61° | 40° | 50° | 0.69" | — |
| 1980 | 74° | 42° | 58° | — | — |
| 1979 | 69° | 52° | 60° | — | — |
| 1978 | 71° | 40° | 55° | — | — |
| 1977 | 61° | 44° | 52° | — | — |
| 1976 | 66° | 35° | 51° | — | — |
| 1975 | 66° | 47° | 56° | 0.08" | — |
| 1974 | 59° | 45° | 52° | 0.3" | — |
| 1973 | 79° | 51° | 65° | — | — |
| 1972 | 61° | 43° | 52° | 0.18" | — |
| 1971 | 64° | 37° | 51° | — | — |
55 years of data from KENT