Kennewick Threshold Days by Year (USC00454154)

19 fixed thresholds counted per year at Kennewick (USC00454154): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Kennewick Thresholds

Kennewick: days with a maximum temperature at or above 30 C (86 F) in 121 years, most in 1967 with 96.
Kennewick: days with a maximum temperature at or above 35 C (95 F) in 121 years, most in 1908 with 49.
Kennewick: days with a maximum temperature at or above 90 F (32.2 C) in 121 years, most in 1940 with 77.
Kennewick: days with a maximum temperature at or below 0 C (32 F) in 118 years, most in 1985 with 58.
19 fixed thresholds have at least one qualifying day at Kennewick.

Days at or above 30 C (86 F)

121 years with a qualifying day

Days per year at Kennewick with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 96 in 1967.

Days at or above 30 C (86 F) per year at Kennewick
Year	Days	Decade average
1894	70	77.4
1896	83	77.4
1897	75	77.4
1898	84	77.4
1899	75	77.4
1906	75	70.3
1907	53	70.3
1908	82	70.3
1909	71	70.3
1910	76	71.9
1911	84	71.9
1912	81	71.9
1914	69	71.9
1915	62	71.9
1916	56	71.9
1917	79	71.9
1918	76	71.9
1919	64	71.9
1920	65	69.4
1921	64	69.4
1922	85	69.4
1923	66	69.4
1924	82	69.4
1925	76	69.4
1926	69	69.4
1927	50	69.4
1928	70	69.4
1929	67	69.4
1930	58	67.2
1931	72	67.2
1932	53	67.2
1933	55	67.2
1934	89	67.2
1935	58	67.2
1936	58	67.2
1937	62	67.2
1938	87	67.2
1939	80	67.2
1940	94	71.9
1941	66	71.9
1942	76	71.9
1943	83	71.9
1944	76	71.9
1945	70	71.9
1947	62	71.9
1948	51	71.9
1949	69	71.9
1950	73	59.5
1951	75	59.5
1952	69	59.5
1953	57	59.5
1954	39	59.5
1955	46	59.5
1956	54	59.5
1957	51	59.5
1958	81	59.5
1959	50	59.5
1960	66	67.4
1961	84	67.4
1962	56	67.4
1963	68	67.4
1964	44	67.4
1965	61	67.4
1966	73	67.4
1967	96	67.4
1968	53	67.4
1969	73	67.4
1970	73	67.5
1971	64	67.5
1972	79	67.5
1973	77	67.5
1974	78	67.5
1975	67	67.5
1977	67	67.5
1978	35	67.5
1980	62	65
1981	69	65
1982	62	65
1983	57	65
1984	65	65
1985	67	65
1986	75	65
1987	74	65
1988	67	65
1989	52	65
1990	69	63.1
1991	61	63.1
1992	68	63.1
1993	43	63.1
1994	75	63.1
1995	56	63.1
1996	59	63.1
1997	68	63.1
1998	72	63.1
1999	60	63.1
2000	59	68.8
2002	66	68.8
2003	87	68.8
2004	63	68.8
2005	66	68.8
2006	69	68.8
2007	73	68.8
2008	61	68.8
2009	75	68.8
2010	51	72.5
2011	65	72.5
2012	72	72.5
2013	82	72.5
2014	74	72.5
2015	86	72.5
2016	64	72.5
2017	83	72.5
2018	71	72.5
2019	77	72.5
2020	72	80.9
2021	84	80.9
2022	72	80.9
2023	85	80.9
2024	78	80.9
2025	94	80.9
2026	81	80.9

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

First to last qualifying date each year at Kennewick
Year	First date	Last date
1894	1894-05-23	1894-09-10
1896	1896-05-29	1896-09-23
1897	1897-04-16	1897-09-26
1898	1898-05-10	1898-09-20
1899	1899-05-22	1899-09-26
1906	1906-04-20	1906-09-30
1907	1907-06-02	1907-10-06
1908	1908-04-08	1908-09-22
1909	1909-05-02	1909-08-31
1910	1910-04-17	1910-10-08
1911	1911-03-30	1911-09-04
1912	1912-05-07	1912-09-19
1914	1914-05-13	1914-09-24
1915	1915-06-05	1915-09-18
1916	1916-06-08	1916-09-20
1917	1917-05-28	1917-10-04
1918	1918-04-20	1918-09-28
1919	1919-05-18	1919-09-26
1920	1920-05-07	1920-09-17
1921	1921-05-12	1921-08-31
1922	1922-05-15	1922-09-19
1923	1923-05-08	1923-09-14
1924	1924-05-09	1924-09-16
1925	1925-04-10	1925-09-24
1926	1926-04-26	1926-09-06
1927	1927-04-24	1927-08-23
1928	1928-05-06	1928-09-05
1929	1929-05-12	1929-09-16
1930	1930-05-27	1930-09-21
1931	1931-04-30	1931-09-05
1932	1932-05-17	1932-09-16
1933	1933-05-29	1933-09-04
1934	1934-04-20	1934-10-09
1935	1935-05-21	1935-09-09
1936	1936-04-12	1936-09-28
1937	1937-05-02	1937-09-18
1938	1938-05-22	1938-09-23
1939	1939-04-18	1939-09-23
1940	1940-05-09	1940-10-18
1941	1941-04-30	1941-09-24
1942	1942-04-20	1942-09-27
1943	1943-04-14	1943-10-08
1944	1944-05-04	1944-09-26
1945	1945-05-02	1945-09-14
1947	1947-04-13	1947-09-24
1948	1948-05-25	1948-09-14
1949	1949-04-17	1949-09-27
1950	1950-05-11	1950-09-23
1951	1951-05-10	1951-09-19
1952	1952-04-18	1952-09-26
1953	1953-05-05	1953-09-16
1954	1954-05-16	1954-09-10
1955	1955-06-04	1955-09-10
1956	1956-04-20	1956-09-19
1957	1957-04-29	1957-09-15
1958	1958-05-16	1958-09-10
1959	1959-05-13	1959-09-13
1960	1960-05-10	1960-09-18
1961	1961-05-19	1961-08-31
1962	1962-06-08	1962-09-18
1963	1963-05-18	1963-09-29
1964	1964-05-31	1964-09-16
1965	1965-05-12	1965-09-02
1966	1966-05-03	1966-09-23
1967	1967-05-16	1967-09-27
1968	1968-04-29	1968-09-09
1969	1969-05-09	1969-09-13
1970	1970-05-15	1970-09-01
1971	1971-05-02	1971-09-10
1972	1972-05-13	1972-09-16
1973	1973-05-12	1973-09-12
1974	1974-06-10	1974-09-25
1975	1975-05-10	1975-09-16
1977	1977-04-07	1977-09-14
1978	1978-05-21	1978-09-04
1980	1980-04-28	1980-10-05
1981	1981-04-24	1981-09-19
1982	1982-05-25	1982-09-19
1983	1983-05-21	1983-09-27
1984	1984-05-29	1984-09-19
1985	1985-05-17	1985-09-04
1986	1986-04-22	1986-09-06
1987	1987-04-28	1987-09-24
1988	1988-05-12	1988-10-02
1989	1989-05-07	1989-09-30
1990	1990-05-05	1990-09-26
1991	1991-06-03	1991-10-02
1992	1992-05-05	1992-09-21
1993	1993-05-11	1993-09-11
1994	1994-05-08	1994-09-28
1995	1995-05-29	1995-09-18
1996	1996-06-03	1996-09-30
1997	1997-05-13	1997-09-26
1998	1998-04-30	1998-09-18
1999	1999-05-24	1999-09-24
2000	2000-05-22	2000-09-19
2002	2002-06-13	2002-09-20
2003	2003-05-24	2003-09-29
2004	2004-06-04	2004-09-09
2005	2005-05-27	2005-09-09
2006	2006-05-16	2006-09-13
2007	2007-05-09	2007-09-14
2008	2008-05-17	2008-09-19
2009	2009-05-18	2009-09-27
2010	2010-05-17	2010-09-29
2011	2011-06-22	2011-09-25
2012	2012-04-24	2012-09-20
2013	2013-05-07	2013-09-16
2014	2014-05-03	2014-09-22
2015	2015-05-29	2015-10-11
2016	2016-04-21	2016-09-17
2017	2017-05-05	2017-09-13
2018	2018-04-28	2018-09-08
2019	2019-05-12	2019-09-08
2020	2020-05-29	2020-10-07
2021	2021-04-19	2021-09-27
2022	2022-06-22	2022-09-28
2023	2023-04-30	2023-09-18
2024	2024-05-12	2024-09-26
2025	2025-05-03	2025-09-25
2026	2026-05-03	2026-09-22

Every Fixed Threshold

Fixed thresholds at Kennewick
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	121	96	1967	81
35 C (95 F): Days	121	49	1908	25
40 C (104 F): Days	73	13	1898	3
45 C (113 F): Days	4	2	1911	1
90 F (32.2 C): Days	121	77	1940	58
100 F (37.8 C): Days	117	26	1898	9
110 F (43.3 C): Days	10	4	2021	1
0 C (32 F): Ice days (max	118	58	1985	1
0 C (32 F): Frost days (min	118	137	1985	33
-10 C (14 F): Days with min	103	32	1937	4
-20 C (-4 F): Days with min	33	14	1950	2
-30 C (-22 F): Days with min	3	4	1930	1
20 C (68 F): Tropical nights (min	111	34	2021	11
25 C (77 F): Days with min	17	5	1906	3
10 mm (0.39 in): Days with 10 mm or more rain	99	11	1948	2
25 mm (0.98 in): Days with 25 mm or more rain	11	2	1942	1
50 mm (1.97 in): Days with 50 mm or more rain	2	1	1921	1
10 cm (3.9 in): Days with 10 cm or more snowfall	12	4	1950	1
25 cm (9.8 in): Days with 25 cm or more snowfall	1	1	1980	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1894.

Download the Data

Data for Kennewick 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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Kennewick Threshold Days by Year (USC00454154)

Key Facts for Kennewick Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related