Weather on April 20
Seattle, WA
55 Years of Data
Avg High
61°F
Avg Low
44°F
Warmest
2016
68°F avg
Coldest
2008
40°F avg
About This Date
April 20th in Seattle, WA typically brings mild spring weather, with average highs around 61°F and lows near 44°F. Over 55 years of records, the warmest April 20th was in 2016 (68°F average), while the coldest was 2008 (40°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 42% of April 20th dates historically, with the wettest April 20th recording 1.83" of rain. The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
Planning for April 20th 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 | 58° | 46° | 52° | 1.83" | — |
| 2024 | 74° | 45° | 59° | — | — |
| 2023 | 48° | 35° | 42° | 0.64" | — |
| 2022 | 55° | 37° | 46° | 0.18" | — |
| 2021 | 71° | 46° | 59° | — | — |
| 2020 | 67° | 44° | 55° | — | — |
| 2019 | 61° | 45° | 53° | — | — |
| 2018 | 62° | 43° | 52° | — | — |
| 2017 | 60° | 45° | 52° | — | — |
| 2016warmest | 81° | 55° | 68° | — | — |
| 2015 | 74° | 45° | 59° | — | — |
| 2014 | 63° | 45° | 54° | — | — |
| 2013 | 57° | 48° | 53° | 0.03" | — |
| 2012 | 55° | 45° | 50° | 0.64" | — |
| 2011 | 53° | 38° | 45° | — | — |
| 2010 | 58° | 50° | 54° | 0.13" | — |
| 2009 | 71° | 46° | 59° | — | — |
| 2008coldest | 47° | 34° | 40° | 0.05" | — |
| 2007 | 59° | 37° | 48° | — | — |
| 2006 | 63° | 45° | 54° | 0.13" | — |
| 2005 | 67° | 40° | 53° | — | — |
| 2004 | 57° | 45° | 51° | 0.03" | — |
| 2003 | 62° | 48° | 55° | 0.03" | — |
| 2002 | 57° | 42° | 50° | — | — |
| 2001 | 61° | 45° | 53° | — | — |
| 2000 | 67° | 49° | 58° | — | — |
| 1999 | 52° | 44° | 48° | 0.03" | — |
| 1998 | 72° | 41° | 56° | — | — |
| 1997 | 59° | 45° | 52° | 0.18" | — |
| 1996 | 58° | 38° | 48° | — | — |
| 1995 | 57° | 43° | 50° | 0.46" | — |
| 1994 | 66° | 46° | 56° | — | — |
| 1993 | 74° | 45° | 59° | 0.18" | — |
| 1992 | 62° | 48° | 55° | 0.08" | — |
| 1991 | 68° | 44° | 56° | — | — |
| 1990 | 56° | 50° | 53° | 0.48" | — |
| 1989 | 64° | 46° | 55° | 0.64" | — |
| 1988 | 69° | 49° | 59° | — | — |
| 1987 | 59° | 40° | 49° | — | — |
| 1986 | 67° | 48° | 57° | — | — |
| 1985 | 53° | 37° | 45° | — | — |
| 1984 | 61° | 41° | 51° | 0.03" | — |
| 1983 | 63° | 51° | 57° | 0.03" | — |
| 1982 | 71° | 37° | 54° | — | — |
| 1981 | 56° | 49° | 52° | 0.03" | — |
| 1980 | 56° | 46° | 51° | 0.25" | — |
| 1979 | 60° | 39° | 50° | — | — |
| 1978 | 56° | 41° | 48° | — | — |
| 1977 | 58° | 37° | 47° | — | — |
| 1976 | 54° | 42° | 48° | 0.46" | — |
| 1975 | 55° | 37° | 46° | — | — |
| 1974 | 58° | 47° | 52° | — | — |
| 1973 | 59° | 38° | 48° | — | — |
| 1972 | 52° | 46° | 49° | — | — |
| 1971 | 50° | 45° | 47° | 0.05" | — |
55 years of data from SEATTLE URBAN SITE