Number of Days of 100 °F in Seattle by Year

This page contains a list of the number of days in each year that the high temperature equaled or exceeded 100 degrees Fahrenheit in Seattle, Washington, between 1894 and 2024.

Also see:

Which year had the most 100° days?

Based on NOAA records, the year 2021 holds the record for the most 100 °F days in Seattle history. There were 3 days with a high temperature of at least 100 degrees that year.

How many so far this year (2024)?

It has not reached 100 degrees Fahrenheit in Seattle so far in 2024. As of April 22, the highest temperature this year is 74 °F.

The last time it reached at least 100° F was June 28, 2021.

Years marked with a gold background have more than 5% incomplete data
Click column headers to sort

Year	Rank	Days >= 100 °F
2024	5	0
2023	5	0
2022	5	0
2021	1	3
2020	5	0
2019	5	0
2018	5	0
2017	5	0
2016	5	0
2015	5	0
2014	5	0
2013	5	0
2012	5	0
2011	5	0
2010	5	0
2009	2	1
2008	5	0
2007	5	0
2006	5	0
2005	5	0
2004	5	0
2003	5	0
2002	5	0
2001	5	0
2000	5	0
1999	5	0
1998	5	0
1997	5	0
1996	5	0
1995	5	0
1994	2	1
1993	5	0
1992	5	0
1991	5	0
1990	5	0
1989	5	0
1988	5	0
1987	5	0
1986	5	0
1985	5	0
1984	5	0
1983	5	0
1982	5	0
1981	5	0
1980	5	0
1979	5	0
1978	5	0
1977	5	0
1976	5	0
1975	5	0
1974	5	0
1973	5	0
1972	5	0
1971	5	0
1970	5	0
1969	5	0
1968	5	0
1967	5	0
1966	5	0
1965	5	0
1964	5	0
1963	5	0
1962	5	0
1961	5	0
1960	5	0
1959	5	0
1958	5	0
1957	5	0
1956	5	0
1955	5	0
1954	5	0
1953	5	0
1952	5	0
1951	5	0
1950	5	0
1949	5	0
1948	5	0
1947	5	0
1946	5	0
1945	5	0
1944	5	0
1943	5	0
1942	5	0
1941	2	1
1940	5	0
1939	5	0
1938	5	0
1937	5	0
1936	5	0
1935	5	0
1934	5	0
1933	5	0
1932	5	0
1931	5	0
1930	5	0
1929	5	0
1928	5	0
1927	5	0
1926	5	0
1925	5	0
1924	5	0
1923	5	0
1922	5	0
1921	5	0
1920	5	0
1919	5	0
1918	5	0
1917	5	0
1916	5	0
1915	5	0
1914	5	0
1913	5	0
1912	5	0
1911	5	0
1910	5	0
1909	5	0
1908	5	0
1907	5	0
1906	5	0
1905	5	0
1904	5	0
1903	5	0
1902	5	0
1901	5	0
1900	5	0
1899	5	0
1898	5	0
1897	5	0
1896	5	0
1895	5	0
1894	5	0

Weather Station Details

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