Claremont Pomona Clg Threshold Days by Year (USC00041779)

14 fixed thresholds counted per year at Claremont Pomona Clg (USC00041779): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Claremont Pomona Clg Thresholds

Claremont Pomona Clg: days with a maximum temperature at or above 30 C (86 F) in 77 years, most in 1904 with 140.
Claremont Pomona Clg: days with a maximum temperature at or above 35 C (95 F) in 77 years, most in 1929 with 57.
Claremont Pomona Clg: days with a maximum temperature at or above 90 F (32.2 C) in 77 years, most in 1922 with 94.
Claremont Pomona Clg: days with a maximum temperature at or above 100 F (37.8 C) in 75 years, most in 1929 with 23.
14 fixed thresholds have at least one qualifying day at Claremont Pomona Clg.

Days at or above 30 C (86 F)

77 years with a qualifying day

Days per year at Claremont Pomona Clg with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 140 in 1904.

Days at or above 30 C (86 F) per year at Claremont Pomona Clg
Year	Days	Decade average
1893	69	77.8
1894	64	77.8
1896	92	77.8
1897	79	77.8
1898	91	77.8
1899	72	77.8
1900	62	82.1
1901	47	82.1
1902	47	82.1
1903	92	82.1
1904	140	82.1
1905	85	82.1
1908	103	82.1
1909	81	82.1
1911	84	93.6
1912	84	93.6
1913	95	93.6
1914	91	93.6
1915	99	93.6
1916	78	93.6
1917	108	93.6
1918	94	93.6
1919	109	93.6
1920	88	104.4
1921	109	104.4
1922	112	104.4
1923	100	104.4
1925	111	104.4
1927	103	104.4
1928	106	104.4
1929	106	104.4
1930	123	112.7
1932	108	112.7
1933	100	112.7
1934	113	112.7
1935	96	112.7
1936	124	112.7
1937	122	112.7
1938	106	112.7
1939	122	112.7
1940	105	96.8
1941	82	96.8
1942	85	96.8
1943	113	96.8
1944	57	96.8
1945	98	96.8
1946	110	96.8
1947	104	96.8
1948	98	96.8
1949	116	96.8
1950	100	100.8
1951	105	100.8
1952	112	100.8
1953	100	100.8
1954	92	100.8
1955	101	100.8
1956	93	100.8
1959	103	100.8
1960	123	90.8
1961	91	90.8
1962	97	90.8
1963	78	90.8
1964	90	90.8
1965	73	90.8
1967	97	90.8
1969	77	90.8
1970	94	81.2
1971	96	81.2
1972	69	81.2
1973	74	81.2
1974	90	81.2
1975	79	81.2
1976	75	81.2
1977	72	81.2
1978	92	81.2
1979	71	81.2
1980	65	65

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

First to last qualifying date each year at Claremont Pomona Clg
Year	First date	Last date
1893	1893-05-22	1893-10-13
1894	1894-04-19	1894-11-13
1896	1896-05-13	1896-10-16
1897	1897-04-16	1897-09-25
1898	1898-04-12	1898-11-05
1899	1899-04-06	1899-10-09
1900	1900-03-10	1900-11-10
1901	1901-06-15	1901-10-22
1902	1902-05-17	1902-10-17
1903	1903-05-06	1903-11-28
1904	1904-03-07	1904-12-19
1905	1905-04-05	1905-10-27
1908	1908-02-26	1908-11-06
1909	1909-04-01	1909-11-03
1911	1911-05-20	1911-11-19
1912	1912-05-14	1912-11-08
1913	1913-04-11	1913-11-10
1914	1914-04-13	1914-11-25
1915	1915-03-15	1915-11-19
1916	1916-02-15	1916-11-01
1917	1917-05-05	1917-12-21
1918	1918-04-09	1918-11-01
1919	1919-01-23	1919-11-16
1920	1920-01-17	1920-09-30
1921	1921-02-24	1921-11-12
1922	1922-04-19	1922-10-25
1923	1923-01-08	1923-10-20
1925	1925-03-04	1925-10-27
1927	1927-04-21	1927-11-29
1928	1928-03-17	1928-10-23
1929	1929-05-02	1929-12-30
1930	1930-02-16	1930-11-12
1932	1932-04-09	1932-11-22
1933	1933-04-14	1933-11-26
1934	1934-03-08	1934-11-06
1935	1935-05-05	1935-10-27
1936	1936-03-01	1936-11-18
1937	1937-04-14	1937-11-22
1938	1938-04-17	1938-12-08
1939	1939-04-06	1939-12-19
1940	1940-04-11	1940-12-08
1941	1941-05-05	1941-11-15
1942	1942-03-30	1942-11-13
1943	1943-02-12	1943-11-15
1944	1944-01-19	1944-10-27
1945	1945-04-28	1945-11-04
1946	1946-03-09	1946-10-25
1947	1947-03-14	1947-10-31
1948	1948-04-15	1948-10-24
1949	1949-04-10	1949-11-24
1950	1950-03-29	1950-12-10
1951	1951-01-25	1951-11-06
1952	1952-04-03	1952-11-06
1953	1953-03-24	1953-11-29
1954	1954-02-07	1954-11-05
1955	1955-03-26	1955-11-10
1956	1956-04-20	1956-11-11
1959	1959-03-12	1959-12-01
1960	1960-03-19	1960-10-22
1961	1961-04-02	1961-11-05
1962	1962-01-07	1962-11-08
1963	1963-02-03	1963-10-25
1964	1964-04-13	1964-11-05
1965	1965-04-19	1965-11-05
1967	1967-05-15	1967-11-14
1969	1969-05-09	1969-11-03
1970	1970-05-03	1970-11-02
1971	1971-01-19	1971-10-14
1972	1972-03-05	1972-10-07
1973	1973-05-10	1973-11-01
1974	1974-04-15	1974-11-13
1975	1975-06-12	1975-11-05
1976	1976-05-01	1976-11-08
1977	1977-04-07	1977-11-26
1978	1978-03-18	1978-11-09
1979	1979-05-12	1979-10-05
1980	1980-04-17	1980-11-05

Every Fixed Threshold

Fixed thresholds at Claremont Pomona Clg
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	77	140	1904	65
35 C (95 F): Days	77	57	1929	10
40 C (104 F): Days	54	10	1955	3
45 C (113 F): Days	4	2	1917	1
90 F (32.2 C): Days	77	94	1922	26
100 F (37.8 C): Days	75	23	1929	2
110 F (43.3 C): Days	13	5	1955	5
0 C (32 F): Frost days (min	71	38	1903	3
20 C (68 F): Tropical nights (min	58	17	1967	5
25 C (77 F): Days with min	3	1	1925	1
10 mm (0.39 in): Days with 10 mm or more rain	53	29	1941	20
25 mm (0.98 in): Days with 25 mm or more rain	51	12	1938	12
50 mm (1.97 in): Days with 50 mm or more rain	30	5	1978	5
100 mm (3.94 in): Days with 100 mm or more rain	8	2	1943	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1893.

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Data for Claremont Pomona Clg 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).

Claremont Pomona Clg Threshold Days by Year (USC00041779)

Key Facts for Claremont Pomona Clg Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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