Weather on March 20
Seattle, WA
55 Years of Data
Avg High
57°F
Avg Low
41°F
Warmest
2019
60°F avg
Coldest
2002
36°F avg
About This Date
March 20th in Seattle, WA typically brings cool spring weather, with average highs around 57°F and lows near 41°F. Over 56 years of records, the warmest March 20th was in 2019 (60°F average), while the coldest was 2002 (36°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 52% of March 20th dates historically, with the wettest March 20th recording 1.96" 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 March 20th 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 |
|---|---|---|---|---|---|
| 2026 | 59° | 47° | 53° | 0.25" | — |
| 2025 | 51° | 42° | 47° | 0.69" | — |
| 2024 | 53° | 47° | 50° | — | — |
| 2023 | 56° | 47° | 51° | 0.08" | — |
| 2022 | 48° | 40° | 44° | 0.1" | — |
| 2021 | 53° | 42° | 48° | 0.33" | — |
| 2020 | 62° | 36° | 49° | — | — |
| 2019warmest | 78° | 42° | 60° | — | — |
| 2018 | 55° | 34° | 44° | — | — |
| 2017 | 53° | 40° | 46° | — | — |
| 2016 | 55° | 49° | 52° | 0.2" | — |
| 2015 | 60° | 51° | 56° | 0.33" | — |
| 2014 | 54° | 37° | 45° | — | — |
| 2013 | 53° | 40° | 46° | 1.5" | — |
| 2012 | 47° | 37° | 42° | 0.25" | — |
| 2011 | 52° | 34° | 43° | 0.03" | — |
| 2010 | 68° | 37° | 53° | — | — |
| 2009 | 57° | 38° | 47° | 0.33" | — |
| 2008 | 48° | 40° | 44° | 0.36" | — |
| 2007 | 49° | 37° | 43° | 0.74" | — |
| 2006 | 59° | 37° | 48° | — | — |
| 2005 | 57° | 39° | 48° | 0.58" | — |
| 2004 | 59° | 38° | 48° | — | — |
| 2003 | 54° | 44° | 49° | 0.3" | — |
| 2002coldest | 39° | 34° | 36° | 0.56" | — |
| 2001 | 56° | 36° | 46° | — | — |
| 2000 | 72° | 30° | 51° | — | — |
| 1999 | 64° | 43° | 53° | — | — |
| 1998 | 65° | 41° | 53° | — | — |
| 1997 | 55° | 40° | 47° | — | — |
| 1996 | 59° | 42° | 51° | 0.03" | — |
| 1995 | 56° | 45° | 50° | 0.74" | — |
| 1994 | 47° | 42° | 44° | 1.17" | — |
| 1993 | 54° | 47° | 50° | 0.28" | — |
| 1992 | 61° | 39° | 50° | — | — |
| 1991 | 57° | 36° | 46° | — | — |
| 1990 | 60° | 48° | 54° | — | — |
| 1989 | 59° | 34° | 46° | 0.43" | — |
| 1988 | 56° | 45° | 50° | 0.33" | — |
| 1987 | 55° | 42° | 49° | — | — |
| 1986 | 71° | 43° | 57° | 0.03" | — |
| 1985 | 56° | 40° | 48° | 0.13" | — |
| 1984 | 60° | 47° | 53° | 1.96" | — |
| 1983 | 63° | 37° | 50° | — | — |
| 1982 | 52° | 39° | 45° | — | — |
| 1981 | 61° | 41° | 51° | — | — |
| 1980 | 55° | 44° | 50° | 0.56" | — |
| 1979 | 60° | 39° | 50° | — | — |
| 1978 | 65° | 41° | 53° | — | — |
| 1977 | 51° | 40° | 45° | 0.05" | — |
| 1976 | 54° | 40° | 47° | 0.3" | — |
| 1975 | 50° | 38° | 44° | 0.05" | — |
| 1974 | 57° | 33° | 45° | — | — |
| 1973 | 53° | 43° | 48° | — | — |
| 1972 | 57° | 45° | 51° | — | — |
| 1971 | 50° | 40° | 45° | — | — |
56 years of data from SEATTLE URBAN SITE