Weather on August 15
Federal Way, WA
55 Years of Data
Avg High
78°F
Avg Low
56°F
Warmest
2010
78°F avg
Coldest
1973
57°F avg
About This Date
August 15th in Federal Way, WA typically brings pleasant summer weather, with average highs around 78°F and lows near 56°F. Over 55 years of records, the warmest August 15th was in 2010 (78°F average), while the coldest was 1973 (57°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 15% of August 15th dates historically, with the wettest August 15th recording 2.08" of rain. The last decade has been 3.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.0°F warmer on this date compared to 20-30 years ago.
Planning for August 15th in Federal Way, WA? Great weather for outdoor activities.
Warming Trend
1.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 71° | 62° | 67° | 1.45" | — |
| 2024 | 74° | 60° | 67° | — | — |
| 2023 | 90° | 65° | 77° | — | — |
| 2022 | 83° | 58° | 70° | — | — |
| 2021 | 89° | 61° | 75° | — | — |
| 2020 | 84° | 60° | 72° | — | — |
| 2019 | 82° | 61° | 71° | — | — |
| 2018 | 91° | 57° | 74° | — | — |
| 2017 | 76° | 53° | 64° | — | — |
| 2016 | 82° | 60° | 71° | — | — |
| 2015 | 70° | 57° | 63° | 0.69" | — |
| 2014 | 75° | 65° | 70° | — | — |
| 2013 | 80° | 64° | 72° | 0.33" | — |
| 2012 | 83° | 61° | 72° | — | — |
| 2011 | 74° | 58° | 66° | — | — |
| 2010warmest | 94° | 62° | 78° | — | — |
| 2009 | 67° | 52° | 59° | — | — |
| 2008 | 89° | 65° | 77° | — | — |
| 2007 | 84° | 57° | 71° | — | — |
| 2006 | 78° | 55° | 67° | — | — |
| 2005 | 88° | 60° | 74° | — | — |
| 2004 | 82° | 60° | 71° | — | — |
| 2003 | 78° | 62° | 70° | — | — |
| 2002 | 82° | 57° | 70° | — | — |
| 2001 | 77° | 55° | 66° | — | — |
| 2000 | 69° | 51° | 60° | — | — |
| 1999 | 71° | 57° | 64° | — | — |
| 1998 | 71° | 57° | 64° | 0.23" | — |
| 1997 | 82° | 59° | 71° | — | — |
| 1996 | 80° | 55° | 68° | — | — |
| 1995 | 67° | 55° | 61° | — | — |
| 1994 | 77° | 57° | 67° | — | — |
| 1993 | 67° | 57° | 62° | — | — |
| 1992 | 83° | 56° | 69° | — | — |
| 1991 | 86° | 61° | 73° | — | — |
| 1990 | 82° | 55° | 69° | — | — |
| 1989 | 71° | 52° | 61° | — | — |
| 1988 | 66° | 54° | 60° | — | — |
| 1987 | 66° | 56° | 61° | 0.03" | — |
| 1986 | 81° | 48° | 64° | — | — |
| 1985 | 87° | 46° | 67° | — | — |
| 1984 | 83° | 45° | 64° | — | — |
| 1983 | 78° | 52° | 65° | — | — |
| 1982 | 75° | 39° | 57° | — | — |
| 1981 | 86° | 55° | 71° | — | — |
| 1980 | 71° | 47° | 59° | — | — |
| 1979 | 77° | 55° | 66° | — | — |
| 1978 | 70° | 61° | 65° | 0.25" | — |
| 1977 | 86° | 52° | 69° | — | — |
| 1976 | 67° | 54° | 60° | 2.08" | — |
| 1975 | 82° | 54° | 68° | — | — |
| 1974 | 77° | 44° | 61° | — | — |
| 1973coldest | 68° | 47° | 57° | — | — |
| 1972 | 72° | 54° | 63° | 0.25" | — |
| 1971 | 81° | 49° | 65° | — | — |
55 years of data from KENT