Fullerton 1 ESE Threshold Days by Year (USC00323287)

22 fixed thresholds counted per year at Fullerton 1 ESE (USC00323287): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Fullerton 1 ESE Thresholds

Fullerton 1 ESE: days with 10 mm (0.39 in) or more of precipitation in 124 years, most in 1986 with 33.
Fullerton 1 ESE: nights with a minimum temperature at or below 0 C (32 F) in 123 years, most in 1907 with 222.
Fullerton 1 ESE: nights with a minimum temperature at or below -10 C (14 F) in 123 years, most in 1955 with 123.
Fullerton 1 ESE: nights with a minimum temperature at or below -20 C (-4 F) in 123 years, most in 1899 with 73.
22 fixed thresholds have at least one qualifying day at Fullerton 1 ESE.

Days at or above 30 C (86 F)

116 years with a qualifying day

Days per year at Fullerton 1 ESE with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 81 in 1936.

Days at or above 30 C (86 F) per year at Fullerton 1 ESE
Year	Days	Decade average
1898	33	33
1899	33	33
1900	43	25.7
1901	40	25.7
1902	18	25.7
1903	12	25.7
1905	20	25.7
1906	21	25.7
1907	13	25.7
1908	34	25.7
1909	30	25.7
1910	36	27.9
1911	32	27.9
1912	20	27.9
1913	28	27.9
1914	31	27.9
1915	11	27.9
1916	33	27.9
1917	32	27.9
1918	27	27.9
1919	29	27.9
1920	27	30.6
1921	45	30.6
1922	33	30.6
1923	21	30.6
1924	21	30.6
1925	41	30.6
1926	42	30.6
1927	16	30.6
1928	19	30.6
1929	41	30.6
1930	40	55.8
1932	42	55.8
1933	62	55.8
1934	66	55.8
1935	44	55.8
1936	81	55.8
1937	59	55.8
1938	50	55.8
1939	58	55.8
1940	44	32.6
1941	45	32.6
1942	11	32.6
1943	23	32.6
1944	25	32.6
1945	25	32.6
1946	24	32.6
1947	39	32.6
1949	57	32.6
1950	35	41.1
1951	16	41.1
1952	59	41.1
1953	37	41.1
1954	36	41.1
1955	56	41.1
1956	39	41.1
1957	36	41.1
1958	39	41.1
1959	58	41.1
1960	44	33.3
1961	47	33.3
1962	29	33.3
1963	25	33.3
1964	28	33.3
1965	11	33.3
1966	37	33.3
1967	34	33.3
1968	26	33.3
1969	52	33.3
1970	68	48.6
1971	30	48.6
1972	38	48.6
1973	54	48.6
1974	53	48.6
1975	43	48.6
1976	74	48.6
1977	45	48.6
1978	49	48.6
1979	32	48.6
1980	63	49.2
1981	34	49.2
1982	42	49.2
1983	66	49.2
1984	46	49.2
1985	49	49.2
1986	25	49.2
1987	46	49.2
1988	73	49.2
1989	48	49.2
1990	44	20
1991	28	20
1992	17	20
1993	8	20
1994	11	20
1995	22	20
1996	20	20
1997	17	20
1998	17	20
1999	16	20
2000	19	28.5
2001	33	28.5
2002	36	28.5
2003	26	28.5
2010	22	22.9
2011	17	22.9
2012	37	22.9
2013	24	22.9
2014	8	22.9
2015	26	22.9
2016	19	22.9
2017	26	22.9
2018	33	22.9
2019	17	22.9
2020	24	32.7
2021	46	32.7
2022	28	32.7

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

First to last qualifying date each year at Fullerton 1 ESE
Year	First date	Last date
1898	1898-05-25	1898-09-27
1899	1899-05-11	1899-09-01
1900	1900-05-10	1900-09-01
1901	1901-04-26	1901-09-04
1902	1902-06-09	1902-09-07
1903	1903-06-17	1903-08-21
1905	1905-06-03	1905-10-06
1906	1906-05-11	1906-09-09
1907	1907-06-28	1907-08-30
1908	1908-04-13	1908-09-24
1909	1909-05-04	1909-10-06
1910	1910-04-27	1910-07-31
1911	1911-05-09	1911-09-01
1912	1912-05-26	1912-09-06
1913	1913-05-27	1913-09-08
1914	1914-06-08	1914-09-26
1915	1915-07-12	1915-09-05
1916	1916-05-06	1916-09-03
1917	1917-05-15	1917-08-30
1918	1918-05-04	1918-08-27
1919	1919-05-28	1919-09-15
1920	1920-06-08	1920-10-06
1921	1921-05-21	1921-09-01
1922	1922-06-04	1922-10-03
1923	1923-04-19	1923-09-05
1924	1924-06-14	1924-09-03
1925	1925-05-19	1925-09-16
1926	1926-04-15	1926-08-31
1927	1927-06-19	1927-09-13
1928	1928-05-07	1928-09-07
1929	1929-05-25	1929-09-22
1930	1930-05-03	1930-08-30
1932	1932-05-13	1932-09-14
1933	1933-05-16	1933-09-18
1934	1934-04-28	1934-09-13
1935	1935-06-13	1935-09-23
1936	1936-05-05	1936-09-23
1937	1937-05-28	1937-10-03
1938	1938-06-05	1938-10-03
1939	1939-05-05	1939-09-18
1940	1940-05-30	1940-09-19
1941	1941-05-13	1941-09-20
1942	1942-07-09	1942-09-10
1943	1943-05-28	1943-08-31
1944	1944-05-23	1944-08-19
1945	1945-06-21	1945-09-06
1946	1946-06-06	1946-08-20
1947	1947-07-03	1947-10-05
1949	1949-05-12	1949-09-25
1950	1950-05-22	1950-09-07
1951	1951-07-14	1951-08-07
1952	1952-04-26	1952-09-29
1953	1953-05-29	1953-10-01
1954	1954-06-13	1954-09-01
1955	1955-05-02	1955-09-18
1956	1956-05-21	1956-10-12
1957	1957-05-07	1957-09-01
1958	1958-05-11	1958-10-15
1959	1959-05-01	1959-09-11
1960	1960-05-13	1960-09-20
1961	1961-05-31	1961-09-18
1962	1962-04-24	1962-09-07
1963	1963-06-29	1963-10-05
1964	1964-05-20	1964-09-09
1965	1965-05-13	1965-08-16
1966	1966-05-22	1966-08-31
1967	1967-05-22	1967-09-08
1968	1968-04-30	1968-09-14
1969	1969-05-13	1969-09-15
1970	1970-05-17	1970-10-05
1971	1971-06-27	1971-09-13
1972	1972-05-16	1972-09-20
1973	1973-05-31	1973-08-31
1974	1974-06-03	1974-09-27
1975	1975-06-25	1975-10-07
1976	1976-06-04	1976-10-01
1977	1977-04-08	1977-09-08
1978	1978-05-25	1978-09-25
1979	1979-05-28	1979-09-26
1980	1980-04-20	1980-10-07
1981	1981-06-27	1981-09-12
1982	1982-05-03	1982-09-10
1983	1983-05-27	1983-09-27
1984	1984-05-16	1984-09-21
1985	1985-04-18	1985-08-31
1986	1986-05-30	1986-08-15
1987	1987-04-18	1987-09-03
1988	1988-05-12	1988-08-25
1989	1989-06-06	1989-09-30
1990	1990-04-22	1990-10-05
1991	1991-05-12	1991-09-03
1992	1992-04-30	1992-10-01
1993	1993-07-30	1993-10-07
1994	1994-05-19	1994-09-09
1995	1995-06-04	1995-09-04
1996	1996-06-10	1996-09-05
1997	1997-05-17	1997-10-02
1998	1998-07-09	1998-09-18
1999	1999-05-29	1999-08-27
2000	2000-05-05	2000-09-18
2001	2001-05-14	2001-09-06
2002	2002-05-28	2002-09-16
2003	2003-04-13	2003-09-07
2010	2010-05-28	2010-08-30
2011	2011-06-06	2011-09-28
2012	2012-05-17	2012-09-15
2013	2013-05-13	2013-09-06
2014	2014-05-28	2014-07-21
2015	2015-05-02	2015-10-11
2016	2016-05-05	2016-08-28
2017	2017-06-02	2017-09-12
2018	2018-05-05	2018-09-16
2019	2019-05-30	2019-09-20
2020	2020-06-01	2020-08-23
2021	2021-05-19	2021-09-28
2022	2022-06-12	2022-09-19

Every Fixed Threshold

Fixed thresholds at Fullerton 1 ESE
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	116	81	1936	28
35 C (95 F): Days	99	34	1936	4
40 C (104 F): Days	23	12	1936	1
45 C (113 F): Days	1	1	1936	1
90 F (32.2 C): Days	115	54	1936	12
100 F (37.8 C): Days	58	19	1936	1
110 F (43.3 C): Days	3	3	1936	1
0 C (32 F): Ice days (max	116	116	2019	98
0 C (32 F): Frost days (min	123	222	1907	172
-10 C (14 F): Days with min	123	123	1955	104
-20 C (-4 F): Days with min	123	73	1899	46
-30 C (-22 F): Days with min	112	20	1899	5
-40 C (-40 F): Days with min	4	2	1994	2
20 C (68 F): Tropical nights (min	108	22	1916	8
25 C (77 F): Days with min	9	2	1988	1
10 mm (0.39 in): Days with 10 mm or more rain	124	33	1986	24
25 mm (0.98 in): Days with 25 mm or more rain	122	12	1942	7
50 mm (1.97 in): Days with 50 mm or more rain	61	3	1922	1
100 mm (3.94 in): Days with 100 mm or more rain	6	1	1899	1
10 cm (3.9 in): Days with 10 cm or more snowfall	56	8	2019	2
25 cm (9.8 in): Days with 25 cm or more snowfall	14	3	2013	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	2013	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.

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Data for Fullerton 1 ESE 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Fullerton 1 ESE Threshold Days by Year (USC00323287)

Key Facts for Fullerton 1 ESE Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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