Washington 1 W Threshold Days by Year

19 fixed thresholds counted per year at Washington 1 W (USC00129253): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Washington 1 W Thresholds

Washington 1 W: days with Days with 10 mm or more rain (0.39 in) or more of precipitation in 123 years, most in 1945 with 57.
Washington 1 W: days with Days with 25 mm or more rain (0.98 in) or more of precipitation in 123 years, most in 1989 with 24.
Washington 1 W: days with a maximum temperature at or above 30 C (86 F) in 117 years, most in 1936 with 109.
Washington 1 W: days with a maximum temperature at or above 90 F (32.2 C) in 117 years, most in 1936 with 90.
19 fixed thresholds have at least one qualifying day at Washington 1 W.

Days at or above 30 C (86 F)

117 years with a qualifying day

Days per year at Washington 1 W with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 109 in 1936.

Days at or above 30 C (86 F) per year at Washington 1 W
Year	Days	Decade average
1898	85	96
1899	107	96
1901	97	66.4
1902	77	66.4
1903	78	66.4
1904	32	66.4
1905	58	66.4
1906	75	66.4
1907	48	66.4
1908	76	66.4
1909	57	66.4
1910	51	72.2
1911	94	72.2
1912	46	72.2
1913	97	72.2
1914	86	72.2
1915	48	72.2
1916	78	72.2
1917	55	72.2
1918	77	72.2
1919	90	72.2
1920	72	79.4
1921	108	79.4
1922	86	79.4
1923	69	79.4
1924	66	79.4
1925	94	79.4
1926	93	79.4
1927	70	79.4
1928	65	79.4
1929	71	79.4
1930	85	89.2
1931	95	89.2
1932	87	89.2
1933	102	89.2
1934	91	89.2
1935	74	89.2
1936	109	89.2
1937	83	89.2
1938	77	89.2
1939	89	89.2
1940	80	62.4
1941	91	62.4
1942	66	62.4
1943	71	62.4
1944	83	62.4
1945	42	62.4
1946	53	62.4
1947	43	62.4
1948	49	62.4
1949	46	62.4
1950	14	72.1
1951	79	72.1
1952	90	72.1
1953	104	72.1
1954	92	72.1
1955	89	72.1
1956	75	72.1
1957	64	72.1
1958	44	72.1
1959	70	72.1
1960	50	59.3
1961	38	59.3
1962	68	59.3
1963	56	59.3
1964	63	59.3
1965	75	59.3
1966	65	59.3
1967	50	59.3
1968	66	59.3
1969	62	59.3
1970	81	69.8
1971	74	69.8
1972	74	69.8
1973	78	69.8
1974	49	69.8
1975	74	69.8
1976	54	69.8
1977	93	69.8
1979	51	69.8
1980	90	67.9
1981	55	67.9
1982	47	67.9
1983	91	67.9
1984	74	67.9
1985	47	67.9
1986	63	67.9
1987	82	67.9
1988	80	67.9
1989	50	67.9
1990	54	65.7
1991	100	65.7
1992	33	65.7
1993	74	65.7
1994	68	65.7
1995	75	65.7
1996	62	65.7
1997	62	65.7
1999	63	65.7
2001	57	70.3
2007	95	70.3
2008	59	70.3
2010	108	72.6
2011	72	72.6
2012	90	72.6
2013	48	72.6
2014	46	72.6
2015	56	72.6
2017	57	72.6
2018	94	72.6
2019	82	72.6
2020	76	77.2
2021	76	77.2
2022	75	77.2
2023	67	77.2
2024	87	77.2
2026	82	77.2

For each year, a bar from the first to the last day at Washington 1 W meeting 30 C (86 F).

First to last qualifying date each year at Washington 1 W
Year	First date	Last date
1898	1898-05-16	1898-10-12
1899	1899-04-22	1899-10-23
1901	1901-05-01	1901-09-29
1902	1902-04-21	1902-09-08
1903	1903-05-14	1903-10-03
1904	1904-05-24	1904-09-29
1905	1905-05-10	1905-10-08
1906	1906-04-28	1906-09-18
1907	1907-05-23	1907-09-20
1908	1908-05-24	1908-10-19
1909	1909-06-06	1909-09-22
1910	1910-03-24	1910-10-19
1911	1911-05-09	1911-10-06
1912	1912-05-23	1912-09-15
1913	1913-05-02	1913-10-10
1914	1914-05-11	1914-09-22
1915	1915-04-19	1915-09-26
1916	1916-05-07	1916-10-08
1917	1917-05-19	1917-09-15
1918	1918-05-05	1918-10-05
1919	1919-05-29	1919-10-03
1920	1920-05-23	1920-10-23
1921	1921-05-19	1921-10-25
1922	1922-04-09	1922-10-30
1923	1923-06-03	1923-10-13
1924	1924-05-05	1924-10-19
1925	1925-04-22	1925-09-28
1926	1926-05-01	1926-10-04
1927	1927-05-08	1927-10-29
1928	1928-05-03	1928-10-14
1929	1929-03-24	1929-09-29
1930	1930-04-10	1930-10-12
1931	1931-04-16	1931-10-04
1932	1932-05-15	1932-09-15
1933	1933-05-19	1933-09-30
1934	1934-04-04	1934-09-25
1935	1935-04-26	1935-10-13
1936	1936-05-06	1936-09-22
1937	1937-05-21	1937-10-01
1938	1938-05-19	1938-10-18
1939	1939-05-18	1939-10-09
1940	1940-04-03	1940-10-27
1941	1941-04-13	1941-10-06
1942	1942-04-30	1942-10-09
1943	1943-06-04	1943-09-05
1944	1944-05-16	1944-10-06
1945	1945-06-16	1945-09-28
1946	1946-06-08	1946-10-10
1947	1947-06-07	1947-09-21
1948	1948-06-02	1948-09-21
1949	1949-05-03	1949-08-26
1950	1950-05-24	1950-08-27
1951	1951-04-28	1951-10-05
1952	1952-05-01	1952-10-01
1953	1953-04-09	1953-10-22
1954	1954-04-25	1954-10-05
1955	1955-05-03	1955-09-29
1956	1956-05-06	1956-09-22
1957	1957-04-19	1957-09-15
1958	1958-04-18	1958-09-25
1959	1959-04-30	1959-10-05
1960	1960-04-22	1960-09-24
1961	1961-06-01	1961-09-24
1962	1962-04-30	1962-10-11
1963	1963-05-07	1963-10-23
1964	1964-05-22	1964-09-20
1965	1965-04-22	1965-10-17
1966	1966-05-08	1966-09-03
1967	1967-04-16	1967-10-04
1968	1968-05-15	1968-09-23
1969	1969-05-05	1969-09-06
1970	1970-04-30	1970-09-23
1971	1971-06-02	1971-10-03
1972	1972-05-19	1972-09-20
1973	1973-06-03	1973-09-26
1974	1974-05-18	1974-08-26
1975	1975-05-18	1975-09-10
1976	1976-04-20	1976-09-08
1977	1977-04-15	1977-09-23
1979	1979-05-08	1979-09-12
1980	1980-05-04	1980-09-22
1981	1981-04-27	1981-10-05
1982	1982-05-13	1982-10-06
1983	1983-06-10	1983-10-02
1984	1984-06-02	1984-09-22
1985	1985-05-14	1985-09-10
1986	1986-04-27	1986-09-29
1987	1987-04-21	1987-09-28
1988	1988-04-05	1988-09-22
1989	1989-04-25	1989-10-13
1990	1990-04-25	1990-09-08
1991	1991-05-14	1991-09-16
1992	1992-05-16	1992-09-15
1993	1993-05-08	1993-09-14
1994	1994-05-22	1994-10-01
1995	1995-06-06	1995-09-14
1996	1996-05-17	1996-09-08
1997	1997-05-18	1997-10-08
1999	1999-05-29	1999-09-29
2001	2001-05-13	2001-09-13
2007	2007-05-01	2007-10-08
2008	2008-05-31	2008-09-24
2010	2010-04-14	2010-10-11
2011	2011-05-12	2011-09-14
2012	2012-05-02	2012-09-08
2013	2013-05-15	2013-09-12
2014	2014-05-21	2014-10-02
2015	2015-05-06	2015-09-24
2017	2017-05-16	2017-09-22
2018	2018-05-10	2018-10-11
2019	2019-05-17	2019-10-03
2020	2020-05-23	2020-10-07
2021	2021-05-21	2021-10-11
2022	2022-05-10	2022-09-22
2023	2023-05-29	2023-10-04
2024	2024-04-15	2024-10-05
2026	2026-03-22	2026-10-02

Every Fixed Threshold

Fixed thresholds at Washington 1 W
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	117	109	1936	82
35 C (95 F): Days	99	49	1913	13
40 C (104 F): Days	16	18	1936	2
45 C (113 F): Days	1	1	1930	1
90 F (32.2 C): Days	117	90	1936	43
100 F (37.8 C): Days	40	30	1936	12
110 F (43.3 C): Days	2	1	1930	1
Ice days (max at or below 0 C) (32 F): Ice days (max	117	40	1963	15
Frost days (min at or below 0 C) (32 F): Frost days (min	114	120	1901	51
-10 C (14 F): Days with min	113	38	1904	13
-20 C (-4 F): Days with min	58	10	1936	2
Tropical nights (min at or above 20 C) (68 F): Tropical nights (min	114	73	1995	74
25 C (77 F): Days with min	48	10	1995	3
Days with 10 mm or more rain (0.39 in): Days with 10 mm or more rain	123	57	1945	30
Days with 25 mm or more rain (0.98 in): Days with 25 mm or more rain	123	24	1989	13
Days with 50 mm or more rain (1.97 in): Days with 50 mm or more rain	106	8	1990	4
Days with 100 mm or more rain (3.94 in): Days with 100 mm or more rain	12	1	1904	1
Days with 10 cm or more snowfall (3.9 in): Days with 10 cm or more snowfall	53	3	1912	1
Days with 25 cm or more snowfall (9.8 in): Days with 25 cm or more snowfall	3	1	1904	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1898.

Download the Data

Data for Washington 1 W threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-12 (12 October 2026). Threshold counts are computed by this site.

Data as of 2026-10-13. Last revised 13 October 2026 (2026-10-13).

Washington 1 W Threshold Days by Year

Key Facts for Washington 1 W Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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