Weather on March 15
Seattle, WA
55 Years of Data
Avg High
53°F
Avg Low
40°F
Warmest
1972
55°F avg
Coldest
1977
40°F avg
About This Date
March 15th in Seattle, WA typically brings cool spring weather, with average highs around 53°F and lows near 40°F. Over 56 years of records, the warmest March 15th was in 1972 (55°F average), while the coldest was 1977 (40°F) — a 15°F range across recorded history. Rain or other precipitation has occurred on about 55% of March 15th dates historically, with the wettest March 15th recording 6.22" of rain. 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 March 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 |
|---|---|---|---|---|---|
| 2026 | 50° | 35° | 43° | — | — |
| 2025 | 49° | 40° | 44° | 1.96" | — |
| 2024 | 60° | 43° | 51° | — | — |
| 2023 | 51° | 39° | 45° | — | — |
| 2022 | 53° | 44° | 49° | 0.81" | — |
| 2021 | 48° | 36° | 42° | — | — |
| 2020 | 47° | 33° | 40° | — | — |
| 2019 | 60° | 39° | 50° | — | — |
| 2018 | 56° | 32° | 44° | — | — |
| 2017 | 52° | 45° | 48° | 1.8" | — |
| 2016 | 51° | 40° | 45° | — | — |
| 2015 | 54° | 46° | 50° | 6.22" | — |
| 2014 | 62° | 44° | 53° | 0.53" | — |
| 2013 | 60° | 49° | 54° | — | — |
| 2012 | 53° | 41° | 47° | 2.67" | — |
| 2011 | 56° | 43° | 49° | 1.22" | — |
| 2010 | 63° | 44° | 53° | 0.03" | — |
| 2009 | 47° | 34° | 40° | 1.19" | — |
| 2008 | 48° | 40° | 44° | 0.46" | — |
| 2007 | 48° | 34° | 41° | 0.03" | — |
| 2006 | 49° | 40° | 44° | 0.13" | — |
| 2005 | 57° | 42° | 50° | — | — |
| 2004 | 51° | 41° | 46° | — | — |
| 2003 | 60° | 45° | 52° | 0.13" | — |
| 2002 | 45° | 37° | 41° | 0.25" | — |
| 2001 | 47° | 41° | 44° | 0.66" | — |
| 2000 | 51° | 32° | 42° | 0.1" | — |
| 1999 | 47° | 39° | 43° | 0.05" | — |
| 1998 | 55° | 48° | 52° | 0.15" | — |
| 1997 | 52° | 34° | 43° | 2.49" | — |
| 1996 | 55° | 41° | 48° | — | — |
| 1995 | 55° | 41° | 48° | — | — |
| 1994 | 58° | 42° | 50° | 0.18" | — |
| 1993 | 54° | 40° | 47° | — | — |
| 1992 | 53° | 47° | 50° | 1.35" | — |
| 1991 | 53° | 37° | 45° | — | — |
| 1990 | 58° | 38° | 48° | — | — |
| 1989 | 49° | 34° | 41° | — | — |
| 1988 | 58° | 33° | 45° | — | — |
| 1987 | 57° | 43° | 50° | 0.46" | — |
| 1986 | 55° | 36° | 45° | — | — |
| 1985 | 56° | 35° | 45° | — | — |
| 1984 | 55° | 42° | 49° | 0.28" | — |
| 1983 | 56° | 41° | 48° | — | — |
| 1982 | 50° | 35° | 43° | 0.36" | — |
| 1981 | 53° | 46° | 50° | 1.42" | — |
| 1980 | 49° | 38° | 43° | 0.3" | — |
| 1979 | 52° | 45° | 48° | 0.79" | — |
| 1978 | 57° | 37° | 47° | — | — |
| 1977coldest | 45° | 36° | 40° | 0.38" | — |
| 1976 | 58° | 34° | 46° | — | — |
| 1975 | 46° | 42° | 44° | 0.81" | — |
| 1974 | 55° | 43° | 49° | 3.2" | — |
| 1973 | 56° | 44° | 50° | — | — |
| 1972warmest | 59° | 52° | 55° | 0.1" | — |
| 1971 | 50° | 37° | 44° | — | — |
56 years of data from SEATTLE URBAN SITE