Weather on June 21
Seattle, WA
55 Years of Data
Avg High
72°F
Avg Low
55°F
Warmest
2021
75°F avg
Coldest
1975
55°F avg
About This Date
June 21st in Seattle, WA typically brings pleasant summer weather, with average highs around 72°F and lows near 55°F. Over 55 years of records, the warmest June 21st was in 2021 (75°F average), while the coldest was 1975 (55°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 22% of June 21st dates historically. 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 June 21st in Seattle, WA? Great weather for outdoor activities.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 61° | 52° | 56° | 0.38" | — |
| 2024 | 87° | 60° | 74° | — | — |
| 2023 | 69° | 51° | 60° | — | — |
| 2022 | 77° | 54° | 65° | — | — |
| 2021warmest | 88° | 62° | 75° | — | — |
| 2020 | 70° | 58° | 64° | — | — |
| 2019 | 72° | 56° | 64° | — | — |
| 2018 | 70° | 59° | 64° | — | — |
| 2017 | 69° | 55° | 62° | — | — |
| 2016 | 73° | 56° | 64° | 0.18" | — |
| 2015 | 81° | 60° | 70° | — | — |
| 2014 | 73° | 53° | 63° | — | — |
| 2013 | 71° | 55° | 63° | 0.03" | — |
| 2012 | 73° | 54° | 63° | — | — |
| 2011 | 78° | 54° | 66° | — | — |
| 2010 | 66° | 53° | 60° | — | — |
| 2009 | 66° | 53° | 60° | 0.03" | — |
| 2008 | 78° | 57° | 68° | — | — |
| 2007 | 73° | 57° | 65° | — | — |
| 2006 | 68° | 53° | 61° | — | — |
| 2005 | 72° | 58° | 65° | 0.1" | — |
| 2004 | 87° | 61° | 74° | — | — |
| 2003 | 62° | 50° | 56° | 0.38" | — |
| 2002 | 84° | 58° | 71° | — | — |
| 2001 | 79° | 58° | 68° | — | — |
| 2000 | 72° | 58° | 65° | — | — |
| 1999 | 62° | 54° | 58° | 0.43" | — |
| 1998 | 79° | 52° | 65° | — | — |
| 1997 | 64° | 53° | 59° | 0.2" | — |
| 1996 | 72° | 53° | 62° | — | — |
| 1995 | 70° | 55° | 62° | — | — |
| 1994 | 80° | 54° | 67° | — | — |
| 1993 | 63° | 51° | 57° | 0.05" | — |
| 1992 | 90° | 57° | 73° | — | — |
| 1991 | 62° | 51° | 57° | — | — |
| 1990 | 85° | 56° | 70° | — | — |
| 1989 | 67° | 49° | 58° | — | — |
| 1988 | 80° | 58° | 69° | — | — |
| 1987 | 64° | 55° | 60° | — | — |
| 1986 | 75° | 51° | 63° | — | — |
| 1985 | 76° | 55° | 65° | — | — |
| 1984 | 63° | 55° | 59° | 0.2" | — |
| 1983 | 73° | 50° | 62° | — | — |
| 1982 | 77° | 58° | 67° | — | — |
| 1981 | 59° | 55° | 57° | — | — |
| 1980 | 69° | 57° | 63° | — | — |
| 1979 | 69° | 51° | 60° | — | — |
| 1978 | 70° | 57° | 63° | — | — |
| 1977 | 72° | 58° | 65° | — | — |
| 1976 | 65° | 55° | 60° | — | — |
| 1975coldest | 58° | 53° | 55° | — | — |
| 1974 | 74° | 54° | 64° | — | — |
| 1973 | 85° | 57° | 71° | 0.05" | — |
| 1972 | 62° | 52° | 57° | 0.05" | — |
| 1971 | 80° | 53° | 67° | — | — |
55 years of data from SEATTLE URBAN SITE