Hanford 1 S Threshold Days by Year (USC00043747)

14 fixed thresholds counted per year at Hanford 1 S (USC00043747): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Hanford 1 S Thresholds

Hanford 1 S: days with a maximum temperature at or above 30 C (86 F) in 113 years, most in 1922 with 161.
Hanford 1 S: days with a maximum temperature at or above 35 C (95 F) in 113 years, most in 1922 with 111.
Hanford 1 S: days with a maximum temperature at or above 90 F (32.2 C) in 113 years, most in 1922 with 144.
Hanford 1 S: days with a maximum temperature at or above 100 F (37.8 C) in 113 years, most in 1936 with 69.
14 fixed thresholds have at least one qualifying day at Hanford 1 S.

Days at or above 30 C (86 F)

113 years with a qualifying day

Days per year at Hanford 1 S with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 161 in 1922.

Days at or above 30 C (86 F) per year at Hanford 1 S
Year	Days	Decade average
1902	135	143.3
1903	147	143.3
1904	141	143.3
1905	150	143.3
1912	82	112.3
1915	128	112.3
1916	123	112.3
1917	130	112.3
1918	94	112.3
1919	117	112.3
1920	111	139.1
1921	129	139.1
1922	161	139.1
1923	125	139.1
1924	151	139.1
1925	122	139.1
1926	160	139.1
1927	137	139.1
1928	152	139.1
1929	143	139.1
1930	124	138.4
1931	157	138.4
1932	142	138.4
1933	140	138.4
1934	153	138.4
1935	134	138.4
1936	141	138.4
1937	138	138.4
1938	121	138.4
1939	134	138.4
1940	149	123.6
1941	104	123.6
1942	114	123.6
1943	119	123.6
1944	119	123.6
1945	124	123.6
1946	128	123.6
1947	136	123.6
1948	108	123.6
1949	135	123.6
1950	125	125.5
1951	136	125.5
1952	128	125.5
1953	106	125.5
1954	125	125.5
1955	121	125.5
1956	124	125.5
1957	120	125.5
1958	135	125.5
1959	135	125.5
1960	124	132.6
1961	140	132.6
1962	135	132.6
1963	116	132.6
1964	143	132.6
1965	138	132.6
1966	144	132.6
1967	127	132.6
1968	127	132.6
1969	132	132.6
1970	134	125.4
1971	127	125.4
1972	126	125.4
1974	141	125.4
1975	126	125.4
1976	101	125.4
1977	119	125.4
1978	122	125.4
1979	133	125.4
1980	121	123.5
1981	127	123.5
1982	112	123.5
1983	116	123.5
1986	116	123.5
1987	134	123.5
1988	134	123.5
1989	128	123.5
1990	120	126.2
1991	137	126.2
1992	147	126.2
1993	119	126.2
1994	122	126.2
1995	113	126.2
1996	132	126.2
1997	133	126.2
1998	102	126.2
1999	137	126.2
2000	141	131
2001	157	131
2002	141	131
2003	142	131
2004	134	131
2005	113	131
2006	119	131
2007	120	131
2008	116	131
2009	127	131
2010	119	134.8
2011	112	134.8
2012	137	134.8
2013	130	134.8
2014	158	134.8
2015	152	134.8
2016	140	134.8
2017	133	134.8
2018	135	134.8
2019	132	134.8
2020	152	145.8
2021	138	145.8
2023	132	145.8
2024	149	145.8
2025	148	145.8
2026	156	145.8

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

First to last qualifying date each year at Hanford 1 S
Year	First date	Last date
1902	1902-03-31	1902-10-09
1903	1903-04-25	1903-10-25
1904	1904-04-09	1904-10-06
1905	1905-04-04	1905-10-25
1912	1912-05-12	1912-09-27
1915	1915-03-21	1915-10-16
1916	1916-03-11	1916-09-30
1917	1917-04-05	1917-10-26
1918	1918-04-20	1918-09-26
1919	1919-04-02	1919-09-26
1920	1920-04-27	1920-09-16
1921	1921-04-22	1921-10-19
1922	1922-04-20	1922-10-26
1923	1923-03-28	1923-10-21
1924	1924-04-18	1924-10-03
1925	1925-04-15	1925-10-01
1926	1926-03-23	1926-10-19
1927	1927-04-21	1927-10-24
1928	1928-03-18	1928-10-19
1929	1929-03-04	1929-11-04
1930	1930-02-18	1930-10-19
1931	1931-03-21	1931-11-04
1932	1932-03-31	1932-10-12
1933	1933-04-02	1933-10-26
1934	1934-04-06	1934-10-29
1935	1935-04-26	1935-10-10
1936	1936-04-10	1936-10-14
1937	1937-04-21	1937-10-26
1938	1938-04-19	1938-10-27
1939	1939-04-07	1939-10-31
1940	1940-04-11	1940-10-20
1941	1941-04-25	1941-11-07
1942	1942-05-06	1942-10-23
1943	1943-05-03	1943-10-16
1944	1944-04-02	1944-10-28
1945	1945-04-18	1945-10-26
1946	1946-04-16	1946-10-14
1947	1947-03-15	1947-10-06
1948	1948-05-06	1948-10-23
1949	1949-04-11	1949-11-07
1950	1950-04-19	1950-10-17
1951	1951-04-10	1951-10-10
1952	1952-04-05	1952-10-15
1953	1953-04-23	1953-11-03
1954	1954-04-16	1954-10-17
1955	1955-05-11	1955-11-09
1956	1956-04-20	1956-10-02
1957	1957-04-05	1957-10-09
1958	1958-05-01	1958-10-31
1959	1959-04-03	1959-10-26
1960	1960-03-19	1960-09-12
1961	1961-04-02	1961-10-18
1962	1962-04-10	1962-10-02
1963	1963-05-16	1963-10-14
1964	1964-03-29	1964-10-22
1965	1965-04-25	1965-10-29
1966	1966-03-31	1966-10-26
1967	1967-05-07	1967-10-17
1968	1968-04-10	1968-10-28
1969	1969-03-29	1969-10-01
1970	1970-05-01	1970-10-12
1971	1971-04-04	1971-10-14
1972	1972-03-16	1972-10-08
1974	1974-04-29	1974-10-18
1975	1975-05-12	1975-09-30
1976	1976-05-01	1976-10-16
1977	1977-04-07	1977-10-17
1978	1978-05-04	1978-10-25
1979	1979-05-05	1979-10-11
1980	1980-04-14	1980-10-25
1981	1981-04-24	1981-10-20
1982	1982-05-01	1982-10-24
1983	1983-05-19	1983-10-28
1986	1986-04-21	1986-10-10
1987	1987-04-15	1987-10-08
1988	1988-03-27	1988-10-23
1989	1989-04-06	1989-10-20
1990	1990-04-14	1990-10-26
1991	1991-05-01	1991-10-22
1992	1992-04-21	1992-10-14
1993	1993-04-30	1993-10-04
1994	1994-04-16	1994-10-11
1995	1995-05-20	1995-10-15
1996	1996-04-08	1996-10-11
1997	1997-04-17	1997-10-19
1998	1998-04-22	1998-10-08
1999	1999-04-16	1999-10-22
2000	2000-04-03	2000-10-10
2001	2001-03-21	2001-10-18
2002	2002-04-01	2002-10-11
2003	2003-05-13	2003-10-30
2004	2004-03-21	2004-10-16
2005	2005-05-15	2005-10-15
2006	2006-05-02	2006-09-28
2007	2007-04-28	2007-10-25
2008	2008-04-13	2008-10-31
2009	2009-04-20	2009-09-29
2010	2010-05-15	2010-11-06
2011	2011-05-05	2011-10-19
2012	2012-04-21	2012-10-19
2013	2013-04-22	2013-10-07
2014	2014-04-08	2014-10-15
2015	2015-03-15	2015-10-17
2016	2016-04-07	2016-11-12
2017	2017-03-15	2017-10-30
2018	2018-04-11	2018-10-02
2019	2019-04-19	2019-10-26
2020	2020-04-24	2020-10-22
2021	2021-04-02	2021-10-07
2023	2023-04-11	2023-10-21
2024	2024-04-12	2024-10-17
2025	2025-03-26	2025-10-12
2026	2026-03-17	2026-10-10

Every Fixed Threshold

Fixed thresholds at Hanford 1 S
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	113	161	1922	156
35 C (95 F): Days	113	111	1922	91
40 C (104 F): Days	108	40	1919	13
45 C (113 F): Days	7	4	1931	1
90 F (32.2 C): Days	113	144	1922	126
100 F (37.8 C): Days	113	69	1936	46
110 F (43.3 C): Days	27	13	1931	5
0 C (32 F): Ice days (max	3	2	1920	2
0 C (32 F): Frost days (min	111	84	1903	2
20 C (68 F): Tropical nights (min	109	53	2024	35
25 C (77 F): Days with min	25	8	2017	5
10 mm (0.39 in): Days with 10 mm or more rain	98	14	1996	6
25 mm (0.98 in): Days with 25 mm or more rain	44	4	1940	1
50 mm (1.97 in): Days with 50 mm or more rain	3	1	1978	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1902.

Download the Data

Data for Hanford 1 S 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).

Hanford 1 S Threshold Days by Year (USC00043747)

Key Facts for Hanford 1 S Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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