Weather on May 18
Seattle, WA
55 Years of Data
Avg High
65°F
Avg Low
50°F
Warmest
1993
69°F avg
Coldest
1989
51°F avg
About This Date
May 18th in Seattle, WA typically brings mild spring weather, with average highs around 65°F and lows near 50°F. Over 55 years of records, the warmest May 18th was in 1993 (69°F average), while the coldest was 1989 (51°F) — a 18°F range across recorded history. Rain or other precipitation has occurred on about 35% of May 18th dates historically, with the wettest May 18th recording 1.91" 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 May 18th in Seattle, WA? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 62° | 47° | 54° | — | — |
| 2024 | 57° | 48° | 53° | 0.03" | — |
| 2023 | 77° | 57° | 67° | — | — |
| 2022 | 59° | 46° | 53° | 0.18" | — |
| 2021 | 61° | 46° | 53° | 0.64" | — |
| 2020 | 68° | 53° | 61° | — | — |
| 2019 | 71° | 51° | 61° | — | — |
| 2018 | 66° | 53° | 60° | — | — |
| 2017 | 65° | 48° | 56° | — | — |
| 2016 | 64° | 52° | 58° | — | — |
| 2015 | 78° | 56° | 67° | — | — |
| 2014 | 68° | 54° | 61° | 0.1" | — |
| 2013 | 63° | 53° | 58° | — | — |
| 2012 | 60° | 45° | 52° | — | — |
| 2011 | 66° | 45° | 55° | — | — |
| 2010 | 65° | 51° | 58° | 0.46" | — |
| 2009 | 67° | 49° | 58° | 1.02" | — |
| 2008 | 75° | 53° | 64° | — | — |
| 2007 | 70° | 47° | 58° | — | — |
| 2006 | 77° | 55° | 66° | — | — |
| 2005 | 67° | 52° | 59° | 1.91" | — |
| 2004 | 74° | 52° | 63° | — | — |
| 2003 | 62° | 39° | 51° | — | — |
| 2002 | 66° | 51° | 59° | — | — |
| 2001 | 63° | 48° | 55° | — | — |
| 2000 | 66° | 51° | 59° | 0.99" | — |
| 1999 | 63° | 49° | 56° | 0.03" | — |
| 1998 | 65° | 48° | 56° | 0.05" | — |
| 1997 | 75° | 50° | 63° | — | — |
| 1996 | 60° | 49° | 54° | 0.91" | — |
| 1995 | 64° | 48° | 56° | — | — |
| 1994 | 69° | 49° | 59° | — | — |
| 1993warmest | 80° | 57° | 69° | — | — |
| 1992 | 71° | 54° | 62° | — | — |
| 1991 | 56° | 50° | 53° | 0.25" | — |
| 1990 | 61° | 49° | 55° | 0.05" | — |
| 1989coldest | 57° | 44° | 51° | 0.08" | — |
| 1988 | 61° | 48° | 54° | 0.15" | — |
| 1987 | 60° | 48° | 54° | — | — |
| 1986 | 65° | 55° | 60° | 0.03" | — |
| 1985 | 63° | 52° | 57° | — | — |
| 1984 | 67° | 51° | 59° | — | — |
| 1983 | 64° | 51° | 58° | — | — |
| 1982 | 60° | 46° | 53° | 0.03" | — |
| 1981 | 62° | 53° | 58° | 0.33" | — |
| 1980 | 69° | 49° | 59° | — | — |
| 1979 | 67° | 51° | 59° | — | — |
| 1978 | 68° | 45° | 56° | — | — |
| 1977 | 62° | 48° | 55° | — | — |
| 1976 | 61° | 43° | 52° | — | — |
| 1975 | 59° | 46° | 53° | — | — |
| 1974 | 60° | 48° | 54° | — | — |
| 1973 | 64° | 52° | 58° | — | — |
| 1972 | 61° | 46° | 53° | 0.23" | — |
| 1971 | 62° | 44° | 53° | — | — |
55 years of data from SEATTLE URBAN SITE