Weather on May 18
Bellevue, WA
55 Years of Data
Avg High
65°F
Avg Low
48°F
Warmest
1973
68°F avg
Coldest
1972
49°F avg
About This Date
May 18th in Bellevue, WA typically brings mild spring weather, with average highs around 65°F and lows near 48°F. Over 55 years of records, the warmest May 18th was in 1973 (68°F average), while the coldest was 1972 (49°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 42% of May 18th dates historically, with the wettest May 18th recording 1.22" of rain. The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
Planning for May 18th in Bellevue, WA? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 61° | 46° | 53° | 0.15" | — |
| 2024 | 57° | 48° | 53° | 0.48" | — |
| 2023 | 78° | 57° | 68° | — | — |
| 2022 | 60° | 46° | 53° | 0.56" | — |
| 2021 | 62° | 46° | 54° | 0.53" | — |
| 2020 | 69° | 50° | 60° | — | — |
| 2019 | 70° | 51° | 60° | — | — |
| 2018 | 64° | 54° | 59° | — | — |
| 2017 | 65° | 49° | 57° | — | — |
| 2016 | 65° | 50° | 57° | 0.46" | — |
| 2015 | 73° | 51° | 62° | — | — |
| 2014 | 69° | 48° | 59° | — | — |
| 2013 | 63° | 52° | 57° | — | — |
| 2012 | 60° | 46° | 53° | — | — |
| 2011 | 66° | 41° | 54° | — | — |
| 2010 | 64° | 51° | 58° | 0.41" | — |
| 2009 | 65° | 49° | 57° | 1.22" | — |
| 2008 | 76° | 55° | 65° | — | — |
| 2007 | 72° | 42° | 57° | 0.08" | — |
| 2006 | 74° | 52° | 63° | — | — |
| 2005 | 67° | 51° | 59° | 1.22" | — |
| 2004 | 76° | 49° | 62° | — | — |
| 2003 | 61° | 39° | 50° | — | — |
| 2002 | 66° | 47° | 56° | — | — |
| 2001 | 61° | 45° | 53° | — | — |
| 2000 | 62° | 48° | 55° | 1.02" | — |
| 1999 | 63° | 50° | 56° | 0.08" | — |
| 1998 | 65° | 48° | 56° | 0.05" | — |
| 1997 | 69° | 48° | 59° | — | — |
| 1996 | 59° | 50° | 55° | 1.09" | — |
| 1995 | 65° | 48° | 56° | — | — |
| 1994 | 69° | 49° | 59° | — | — |
| 1993 | 78° | 56° | 67° | — | — |
| 1992 | 71° | 51° | 61° | — | — |
| 1991 | 55° | 48° | 52° | 0.23" | — |
| 1990 | 61° | 48° | 54° | — | — |
| 1989 | 55° | 44° | 50° | 0.08" | — |
| 1988 | 61° | 48° | 54° | 0.18" | — |
| 1987 | 56° | 46° | 51° | 0.05" | — |
| 1986 | 65° | 55° | 60° | 0.03" | — |
| 1985 | 63° | 52° | 57° | — | — |
| 1984 | 67° | 51° | 59° | — | — |
| 1983 | 68° | 50° | 59° | — | — |
| 1982 | 60° | 44° | 52° | 0.05" | — |
| 1981 | 61° | 52° | 56° | 0.25" | — |
| 1980 | 75° | 50° | 63° | — | — |
| 1979 | 69° | 53° | 61° | — | — |
| 1978 | 72° | 45° | 58° | — | — |
| 1977 | 58° | 48° | 53° | — | — |
| 1976 | 64° | 42° | 53° | — | — |
| 1975 | 67° | 48° | 57° | 0.03" | — |
| 1974 | 62° | 39° | 51° | 0.15" | — |
| 1973warmest | 81° | 55° | 68° | — | — |
| 1972coldest | 53° | 44° | 49° | 0.48" | — |
| 1971 | 58° | 42° | 50° | — | — |
55 years of data from SEATTLE UNIV OF WASHIN