Weather on April 15
Seattle, WA
55 Years of Data
Avg High
59°F
Avg Low
43°F
Warmest
1999
59°F avg
Coldest
2008
42°F avg
About This Date
April 15th in Seattle, WA typically brings cool spring weather, with average highs around 59°F and lows near 43°F. Over 55 years of records, the warmest April 15th was in 1999 (59°F average), while the coldest was 2008 (42°F) — a 17°F range across recorded history. Rain or other precipitation has occurred on about 42% of April 15th dates historically, with the wettest April 15th recording 1.65" of rain. The last decade has been 1.4°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.4°F cooler on this date compared to 20-30 years ago.
Planning for April 15th in Seattle, WA? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 66° | 46° | 56° | — | — |
| 2024 | 56° | 46° | 51° | — | — |
| 2023 | 53° | 42° | 48° | — | — |
| 2022 | 51° | 35° | 43° | — | — |
| 2021 | 74° | 43° | 58° | — | — |
| 2020 | 65° | 46° | 55° | — | — |
| 2019 | 56° | 43° | 49° | — | — |
| 2018 | 52° | 44° | 48° | 0.28" | — |
| 2017 | 58° | 41° | 49° | — | — |
| 2016 | 60° | 47° | 53° | — | — |
| 2015 | 59° | 38° | 48° | — | — |
| 2014 | 61° | 49° | 55° | 0.03" | — |
| 2013 | 56° | 40° | 48° | — | — |
| 2012 | 61° | 46° | 53° | — | — |
| 2011 | 53° | 38° | 45° | 0.1" | — |
| 2010 | 63° | 44° | 53° | — | — |
| 2009 | 55° | 34° | 44° | — | — |
| 2008coldest | 49° | 36° | 42° | 0.13" | — |
| 2007 | 57° | 41° | 49° | — | — |
| 2006 | 52° | 39° | 45° | 0.74" | — |
| 2005 | 51° | 40° | 45° | 0.91" | — |
| 2004 | 58° | 43° | 50° | — | — |
| 2003 | 59° | 47° | 53° | — | — |
| 2002 | 51° | 41° | 46° | 0.61" | — |
| 2001 | 66° | 39° | 53° | — | — |
| 2000 | 58° | 47° | 52° | 0.03" | — |
| 1999warmest | 76° | 43° | 59° | — | — |
| 1998 | 63° | 39° | 51° | — | — |
| 1997 | 65° | 49° | 57° | 0.74" | — |
| 1996 | 67° | 49° | 58° | 0.97" | — |
| 1995 | 57° | 37° | 47° | — | — |
| 1994 | 62° | 42° | 52° | — | — |
| 1993 | 58° | 49° | 53° | 0.48" | — |
| 1992 | 64° | 51° | 58° | 0.15" | — |
| 1991 | 59° | 44° | 52° | 0.2" | — |
| 1990 | 69° | 47° | 58° | — | — |
| 1989 | 62° | 46° | 54° | — | — |
| 1988 | 65° | 51° | 58° | — | — |
| 1987 | 58° | 52° | 55° | — | — |
| 1986 | 57° | 43° | 50° | 1.42" | — |
| 1985 | 65° | 46° | 55° | 0.05" | — |
| 1984 | 63° | 49° | 56° | — | — |
| 1983 | 66° | 40° | 53° | — | — |
| 1982 | 51° | 41° | 46° | — | — |
| 1981 | 63° | 45° | 54° | 0.13" | — |
| 1980 | 61° | 45° | 53° | — | — |
| 1979 | 54° | 43° | 48° | 0.08" | — |
| 1978 | 62° | 43° | 52° | 1.65" | — |
| 1977 | 59° | 44° | 52° | 0.38" | — |
| 1976 | 49° | 37° | 43° | 0.13" | — |
| 1975 | 58° | 43° | 50° | — | — |
| 1974 | 60° | 46° | 53° | — | — |
| 1973 | 55° | 45° | 50° | 0.25" | — |
| 1972 | 51° | 40° | 45° | 0.23" | — |
| 1971 | 54° | 40° | 47° | 0.18" | — |
55 years of data from SEATTLE URBAN SITE