Weather on May 9
Seattle, WA
55 Years of Data
Avg High
64°F
Avg Low
47°F
Warmest
1987
70°F avg
Coldest
1999
47°F avg
About This Date
May 9th in Seattle, WA typically brings mild spring weather, with average highs around 64°F and lows near 47°F. Over 55 years of records, the warmest May 9th was in 1987 (70°F average), while the coldest was 1999 (47°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 38% of May 9th dates historically, with the wettest May 9th recording 1.73" of rain. The last decade has been 6.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 6.8°F warmer on this date compared to 20-30 years ago.
Planning for May 9th in Seattle, WA? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 70° | 47° | 58° | — | — |
| 2024 | 75° | 48° | 62° | — | — |
| 2023 | 64° | 49° | 56° | 0.03" | — |
| 2022 | 58° | 40° | 49° | — | — |
| 2021 | 63° | 49° | 56° | — | — |
| 2020 | 87° | 54° | 70° | — | — |
| 2019 | 82° | 57° | 70° | — | — |
| 2018 | 67° | 53° | 60° | — | — |
| 2017 | 70° | 46° | 58° | — | — |
| 2016 | 67° | 47° | 57° | — | — |
| 2015 | 80° | 50° | 65° | — | — |
| 2014 | 58° | 49° | 53° | 0.18" | — |
| 2013 | 71° | 53° | 62° | — | — |
| 2012 | 56° | 45° | 50° | 0.03" | — |
| 2011 | 58° | 50° | 54° | — | — |
| 2010 | 70° | 43° | 56° | — | — |
| 2009 | 63° | 42° | 52° | — | — |
| 2008 | 60° | 42° | 51° | — | — |
| 2007 | 62° | 48° | 55° | — | — |
| 2006 | 61° | 41° | 51° | — | — |
| 2005 | 60° | 53° | 57° | 1.35" | — |
| 2004 | 66° | 44° | 55° | 0.03" | — |
| 2003 | 65° | 45° | 55° | — | — |
| 2002 | 58° | 44° | 51° | — | — |
| 2001 | 63° | 42° | 52° | — | — |
| 2000 | 51° | 46° | 49° | 1.73" | — |
| 1999coldest | 55° | 39° | 47° | 0.48" | — |
| 1998 | 55° | 49° | 52° | 0.38" | — |
| 1997 | 73° | 50° | 62° | — | — |
| 1996 | 58° | 39° | 48° | — | — |
| 1995 | 63° | 51° | 57° | 0.3" | — |
| 1994 | 69° | 50° | 60° | — | — |
| 1993 | 65° | 46° | 55° | 0.64" | — |
| 1992 | 55° | 48° | 52° | 0.03" | — |
| 1991 | 60° | 44° | 52° | 0.1" | — |
| 1990 | 69° | 45° | 57° | — | — |
| 1989 | 58° | 49° | 53° | 0.05" | — |
| 1988 | 69° | 52° | 60° | — | — |
| 1987warmest | 82° | 58° | 70° | — | — |
| 1986 | 55° | 48° | 52° | 0.46" | — |
| 1985 | 64° | 40° | 52° | — | — |
| 1984 | 58° | 47° | 52° | 0.33" | — |
| 1983 | 61° | 44° | 52° | — | — |
| 1982 | 61° | 49° | 55° | — | — |
| 1981 | 59° | 48° | 54° | 0.76" | — |
| 1980 | 65° | 49° | 57° | — | — |
| 1979 | 62° | 48° | 55° | 0.43" | — |
| 1978 | 55° | 51° | 53° | 0.48" | — |
| 1977 | 67° | 46° | 56° | — | — |
| 1976 | 81° | 50° | 65° | — | — |
| 1975 | 83° | 48° | 65° | — | — |
| 1974 | 56° | 43° | 49° | 0.3" | — |
| 1973 | 59° | 46° | 53° | 0.08" | — |
| 1972 | 58° | 50° | 54° | 0.05" | — |
| 1971 | 64° | 44° | 54° | — | — |
55 years of data from SEATTLE URBAN SITE