Weather on August 17
Seattle, WA
55 Years of Data
Avg High
77°F
Avg Low
58°F
Warmest
2020
78°F avg
Coldest
1995
58°F avg
About This Date
August 17th in Seattle, WA typically brings pleasant summer weather, with average highs around 77°F and lows near 58°F. Over 54 years of records, the warmest August 17th was in 2020 (78°F average), while the coldest was 1995 (58°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 15% of August 17th dates historically, with the wettest August 17th recording 2.67" of rain. The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
Planning for August 17th in Seattle, WA? Great weather for outdoor activities.
Warming Trend
1.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 76° | 63° | 69° | — | — |
| 2024 | 78° | 60° | 69° | 1.3" | — |
| 2023 | 91° | 64° | 78° | — | — |
| 2022 | 87° | 63° | 75° | — | — |
| 2021 | 69° | 56° | 62° | — | — |
| 2020warmest | 90° | 66° | 78° | — | — |
| 2019 | 74° | 61° | 67° | — | — |
| 2018 | 74° | 56° | 65° | — | — |
| 2017 | 77° | 62° | 70° | — | — |
| 2016 | 80° | 56° | 68° | — | — |
| 2015 | 81° | 60° | 70° | — | — |
| 2014 | 82° | 60° | 71° | — | — |
| 2013 | 79° | 65° | 72° | — | — |
| 2012 | 91° | 62° | 77° | — | — |
| 2011 | 78° | 53° | 66° | — | — |
| 2010 | 89° | 59° | 74° | — | — |
| 2009 | 82° | 58° | 70° | — | — |
| 2008 | 85° | 65° | 75° | — | — |
| 2007 | 76° | 56° | 66° | — | — |
| 2006 | 71° | 56° | 63° | — | — |
| 2005 | 73° | 58° | 65° | 0.13" | — |
| 2004 | 81° | 60° | 70° | — | — |
| 2003 | 81° | 66° | 73° | — | — |
| 2002 | 80° | 52° | 66° | — | — |
| 2001 | 73° | 57° | 65° | — | — |
| 2000 | 74° | 50° | 62° | — | — |
| 1999 | 78° | 59° | 69° | — | — |
| 1997 | 88° | 61° | 74° | — | — |
| 1996 | 73° | 56° | 64° | — | — |
| 1995coldest | 64° | 52° | 58° | 1.78" | — |
| 1994 | 78° | 62° | 70° | — | — |
| 1993 | 74° | 58° | 66° | — | — |
| 1992 | 83° | 58° | 70° | — | — |
| 1991 | 83° | 59° | 71° | — | — |
| 1990 | 75° | 61° | 68° | — | — |
| 1989 | 72° | 56° | 64° | — | — |
| 1988 | 69° | 57° | 63° | 0.05" | — |
| 1987 | 73° | 51° | 62° | — | — |
| 1986 | 81° | 56° | 68° | — | — |
| 1985 | 85° | 57° | 71° | — | — |
| 1984 | 79° | 64° | 71° | — | — |
| 1983 | 75° | 56° | 65° | — | — |
| 1982 | 74° | 52° | 63° | — | — |
| 1981 | 84° | 57° | 71° | — | — |
| 1980 | 66° | 54° | 60° | 2.67" | — |
| 1979 | 75° | 60° | 68° | 0.2" | — |
| 1978 | 70° | 57° | 63° | — | — |
| 1977 | 89° | 62° | 76° | — | — |
| 1976 | 69° | 53° | 61° | — | — |
| 1975 | 78° | 60° | 69° | 0.03" | — |
| 1974 | 64° | 55° | 60° | — | — |
| 1973 | 67° | 51° | 59° | — | — |
| 1972 | 68° | 56° | 62° | 0.48" | — |
| 1971 | 78° | 58° | 68° | — | — |
54 years of data from SEATTLE URBAN SITE