Weather on August 9
Seattle, WA
55 Years of Data
Avg High
78°F
Avg Low
59°F
Warmest
1981
80°F avg
Coldest
1975
62°F avg
About This Date
August 9th in Seattle, WA typically brings pleasant summer weather, with average highs around 78°F and lows near 59°F. Over 54 years of records, the warmest August 9th was in 1981 (80°F average), while the coldest was 1975 (62°F) — a 18°F range across recorded history. Rain or other precipitation has occurred on about 11% of August 9th dates historically, with the wettest August 9th recording 1.83" 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 August 9th in Seattle, WA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 80° | 60° | 70° | — | — |
| 2024 | 87° | 65° | 76° | — | — |
| 2023 | 77° | 62° | 70° | — | — |
| 2022 | 77° | 60° | 69° | — | — |
| 2021 | 77° | 57° | 67° | — | — |
| 2020 | 76° | 55° | 65° | — | — |
| 2019 | 76° | 62° | 69° | — | — |
| 2018 | 90° | 62° | 76° | — | — |
| 2017 | 87° | 63° | 75° | — | — |
| 2016 | 72° | 60° | 66° | — | — |
| 2015 | 84° | 60° | 72° | — | — |
| 2014 | 81° | 61° | 71° | — | — |
| 2013 | 83° | 61° | 72° | — | — |
| 2012 | 74° | 59° | 66° | — | — |
| 2011 | 69° | 56° | 62° | — | — |
| 2010 | 67° | 59° | 63° | — | — |
| 2009 | 78° | 61° | 69° | — | — |
| 2008 | 72° | 57° | 64° | 0.74" | — |
| 2007 | 72° | 54° | 63° | — | — |
| 2006 | 72° | 61° | 66° | — | — |
| 2005 | 75° | 57° | 66° | — | — |
| 2004 | 91° | 65° | 78° | — | — |
| 2003 | 74° | 61° | 67° | 0.38" | — |
| 2002 | 83° | 57° | 70° | — | — |
| 2001 | 85° | 63° | 74° | — | — |
| 2000 | 72° | 58° | 65° | — | — |
| 1999 | 78° | 60° | 69° | — | — |
| 1997 | 81° | 58° | 69° | — | — |
| 1996 | 83° | 57° | 70° | — | — |
| 1995 | 75° | 52° | 63° | — | — |
| 1994 | 79° | 58° | 68° | 0.15" | — |
| 1993 | 74° | 60° | 67° | — | — |
| 1992 | 75° | 53° | 64° | — | — |
| 1991 | 66° | 59° | 63° | 1.83" | — |
| 1990 | 80° | 58° | 69° | — | — |
| 1989 | 72° | 58° | 65° | — | — |
| 1988 | 69° | 58° | 63° | — | — |
| 1987 | 81° | 60° | 70° | — | — |
| 1986 | 89° | 61° | 75° | — | — |
| 1985 | 70° | 56° | 63° | 0.36" | — |
| 1984 | 80° | 62° | 71° | — | — |
| 1983 | 75° | 59° | 67° | — | — |
| 1982 | 66° | 58° | 62° | 0.05" | — |
| 1981warmest | 94° | 67° | 80° | — | — |
| 1980 | 80° | 57° | 69° | — | — |
| 1979 | 78° | 56° | 67° | — | — |
| 1978 | 84° | 62° | 73° | — | — |
| 1977 | 88° | 60° | 74° | — | — |
| 1976 | 70° | 59° | 64° | — | — |
| 1975coldest | 73° | 50° | 62° | — | — |
| 1974 | 82° | 56° | 69° | — | — |
| 1973 | 79° | 58° | 68° | — | — |
| 1972 | 83° | 59° | 71° | — | — |
| 1971 | 92° | 61° | 76° | — | — |
54 years of data from SEATTLE URBAN SITE