Average May Temperature in Seattle by Year

This page contains a list of the average monthly high and low temperatures in Seattle, Washington for the month of May each year between 1894 and 2023. It is based on NOAA data.

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What Was the Hottest May Ever in Seattle?

2018 was the warmest May in the history of Seattle, Washington. The average daily high temperature was 70.8 °F, and the average low was 51.5 °F.

What Was the Coldest May Ever in Seattle?

1962 was the coolest May in the history of Seattle, Washington. The average daily high temperature was 57.5 °F, and the average low was 43.7 °F.

* click column headers to sort

Year	Rank	High (°F)	Low (°F)
2023	2	70.6	51.2
2022	114	60.0	45.2
2021	47	65.7	48.1
2020	12	68.0	50.5
2019	3	69.7	51.2
2018	1	70.8	51.5
2017	28	67.0	48.8
2016	10	68.8	50.7
2015	13	68.0	50.2
2014	14	67.8	50.4
2013	18	67.3	49.9
2012	67	63.8	46.7
2011	120	59.7	44.9
2010	107	60.8	45.5
2009	58	65.9	46.6
2008	59	63.9	48.3
2007	53	66.4	46.7
2006	48	66.1	47.5
2005	23	65.8	50.6
2004	44	64.8	49.1
2003	75	62.9	46.7
2002	109	60.8	45.3
2001	66	64.9	45.8
2000	98	60.6	47.0
1999	124	59.6	44.0
1998	74	61.3	48.4
1997	24	67.0	49.3
1996	108	60.5	45.7
1995	7	70.0	50.2
1994	25	67.3	49.0
1993	11	68.7	50.5
1992	9	71.2	48.4
1991	91	61.8	46.8
1990	79	63.0	46.3
1989	62	65.0	46.9
1988	73	63.6	46.1
1987	45	66.3	47.6
1986	63	63.7	47.7
1985	71	63.8	45.8
1984	111	60.5	45.2
1983	32	66.3	49.0
1982	80	63.7	45.6
1981	76	62.5	46.9
1980	92	61.9	46.5
1979	39	66.8	47.6
1978	88	63.1	45.8
1977	90	61.9	47.0
1976	57	65.5	47.2
1975	85	64.1	45.0
1974	70	62.5	47.3
1973	54	65.7	47.3
1972	20	67.7	49.0
1971	87	62.9	46.1
1970	78	63.4	45.9
1969	26	67.9	48.1
1968	38	66.0	48.5
1967	64	63.9	46.9
1966	89	64.0	45.0
1965	123	60.6	43.1
1964	106	62.9	43.5
1963	31	67.9	47.5
1962	130	57.5	43.7
1961	99	62.4	45.2
1960	113	60.5	44.8
1959	103	62.5	44.4
1958	5	70.6	50.2
1957	27	66.7	49.2
1956	49	67.2	46.4
1955	129	58.9	42.4
1954	97	63.6	44.2
1953	115	61.7	43.5
1952	96	63.9	44.1
1951	93	64.6	43.8
1950	127	61.6	41.6
1949	37	68.4	46.2
1948	110	61.4	44.4
1947	6	69.6	51.1
1946	8	69.3	50.5
1945	17	67.0	50.5
1944	42	65.8	48.2
1943	77	62.1	47.2
1942	52	63.7	49.5
1941	33	65.2	50.0
1940	4	69.4	51.5
1939	34	66.4	48.7
1938	29	67.3	48.4
1937	50	65.4	48.0
1936	15	67.5	50.4
1935	51	66.1	47.1
1934	16	67.1	50.6
1933	102	60.3	46.6
1932	72	61.9	47.8
1931	21	67.1	49.5
1930	104	61.1	45.7
1929	81	62.8	46.4
1928	22	66.8	49.6
1927	119	59.0	45.7
1926	56	63.7	49.1
1925	30	66.5	49.1
1924	35	66.0	48.7
1923	94	61.1	47.1
1922	86	62.8	46.2
1921	100	61.5	45.7
1920	125	59.7	43.6
1919	101	61.6	45.5
1918	116	59.8	45.1
1917	117	59.1	45.7
1916	122	59.4	44.7
1915	61	63.4	48.5
1914	36	65.7	48.9
1913	95	60.9	47.3
1912	43	65.3	48.7
1911	112	59.9	45.5
1910	41	65.4	48.7
1909	121	60.0	44.6
1908	126	58.6	44.7
1907	46	65.8	48.1
1906	82	61.8	47.4
1905	84	62.2	47.0
1904	69	63.6	46.6
1903	83	62.6	46.6
1902	55	64.0	49.0
1901	65	63.2	47.6
1900	60	63.5	48.5
1899	128	58.2	44.8
1898	40	67.0	47.2
1897	19	68.0	48.9
1896	118	59.8	44.9
1895	68	63.0	47.4
1894	105	60.7	46.1

Weather Station Details

Years	Station	Coordinates
1948–2024	Seattle Tacoma International Airport	location
1894–1947	University of Washington	location