Pasadena Threshold Days by Year (USC00046719)

14 fixed thresholds counted per year at Pasadena (USC00046719): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Pasadena Thresholds

Pasadena: days with a maximum temperature at or above 30 C (86 F) in 119 years, most in 2014 with 154.
Pasadena: days with a maximum temperature at or above 35 C (95 F) in 119 years, most in 2022 with 58.
Pasadena: days with a maximum temperature at or above 90 F (32.2 C) in 119 years, most in 2022 with 111.
Pasadena: days with 10 mm (0.39 in) or more of precipitation in 115 years, most in 1983 with 32.
14 fixed thresholds have at least one qualifying day at Pasadena.

Days at or above 30 C (86 F)

119 years with a qualifying day

Days per year at Pasadena with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 154 in 2014.

Days at or above 30 C (86 F) per year at Pasadena
Year	Days	Decade average
1893	21	21
1909	83	83
1910	101	79.7
1911	62	79.7
1912	60	79.7
1913	69	79.7
1914	89	79.7
1915	75	79.7
1916	48	79.7
1917	115	79.7
1918	81	79.7
1919	97	79.7
1920	77	93.4
1921	85	93.4
1922	107	93.4
1923	80	93.4
1924	97	93.4
1925	80	93.4
1926	99	93.4
1927	111	93.4
1928	96	93.4
1929	102	93.4
1930	100	92.2
1931	118	92.2
1932	82	92.2
1933	72	92.2
1934	106	92.2
1935	72	92.2
1936	103	92.2
1937	93	92.2
1938	92	92.2
1939	84	92.2
1940	66	68.1
1941	53	68.1
1942	65	68.1
1943	83	68.1
1944	43	68.1
1945	76	68.1
1946	81	68.1
1947	81	68.1
1948	55	68.1
1949	78	68.1
1950	75	85.5
1951	71	85.5
1952	81	85.5
1953	87	85.5
1954	75	85.5
1955	77	85.5
1956	92	85.5
1957	90	85.5
1958	100	85.5
1959	107	85.5
1960	111	95.6
1961	98	95.6
1962	95	95.6
1963	84	95.6
1964	94	95.6
1965	79	95.6
1966	100	95.6
1967	107	95.6
1968	99	95.6
1969	89	95.6
1970	109	93.1
1971	115	93.1
1972	86	93.1
1973	80	93.1
1974	87	93.1
1975	81	93.1
1976	81	93.1
1977	90	93.1
1978	108	93.1
1979	94	93.1
1980	97	103.3
1981	119	103.3
1982	88	103.3
1983	89	103.3
1984	123	103.3
1985	107	103.3
1986	96	103.3
1987	91	103.3
1988	112	103.3
1989	111	103.3
1990	129	119.2
1991	114	119.2
1992	109	119.2
1993	98	119.2
1994	116	119.2
1995	128	119.2
1996	130	119.2
1997	139	119.2
1998	99	119.2
1999	130	119.2
2000	128	104.8
2001	112	104.8
2002	93	104.8
2003	107	104.8
2004	95	104.8
2005	83	104.8
2006	98	104.8
2007	93	104.8
2008	127	104.8
2009	112	104.8
2010	80	118.9
2011	102	118.9
2012	119	118.9
2013	109	118.9
2014	154	118.9
2015	138	118.9
2016	134	118.9
2017	135	118.9
2018	116	118.9
2019	102	118.9
2020	138	120.7
2021	138	120.7
2022	150	120.7
2023	92	120.7
2024	116	120.7
2025	109	120.7
2026	102	120.7

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

First to last qualifying date each year at Pasadena
Year	First date	Last date
1893	1893-04-20	1893-09-03
1909	1909-04-01	1909-11-03
1910	1910-03-01	1910-11-29
1911	1911-05-20	1911-12-01
1912	1912-01-14	1912-11-27
1913	1913-04-10	1913-11-09
1914	1914-03-06	1914-11-25
1915	1915-03-16	1915-11-19
1916	1916-02-14	1916-10-26
1917	1917-04-05	1917-12-31
1918	1918-01-01	1918-12-03
1919	1919-05-27	1919-11-16
1920	1920-01-17	1920-09-29
1921	1921-02-24	1921-11-10
1922	1922-04-19	1922-10-25
1923	1923-01-08	1923-10-20
1924	1924-02-12	1924-11-29
1925	1925-03-01	1925-10-25
1926	1926-02-26	1926-11-18
1927	1927-03-23	1927-11-17
1928	1928-03-18	1928-10-22
1929	1929-05-01	1929-11-18
1930	1930-02-16	1930-11-11
1931	1931-03-03	1931-11-06
1932	1932-02-26	1932-11-19
1933	1933-05-23	1933-11-25
1934	1934-03-09	1934-11-06
1935	1935-05-05	1935-10-27
1936	1936-03-02	1936-11-19
1937	1937-04-14	1937-11-22
1938	1938-04-17	1938-12-08
1939	1939-04-06	1939-12-04
1940	1940-04-11	1940-12-08
1941	1941-05-06	1941-11-08
1942	1942-05-19	1942-11-13
1943	1943-02-12	1943-11-15
1944	1944-01-19	1944-10-27
1945	1945-05-15	1945-12-30
1946	1946-03-01	1946-11-27
1947	1947-03-14	1947-10-31
1948	1948-04-14	1948-11-06
1949	1949-04-10	1949-11-24
1950	1950-03-29	1950-12-24
1951	1951-01-24	1951-11-06
1952	1952-04-03	1952-11-04
1953	1953-02-06	1953-11-29
1954	1954-02-01	1954-11-22
1955	1955-03-26	1955-11-10
1956	1956-04-20	1956-11-22
1957	1957-02-12	1957-10-25
1958	1958-04-11	1958-12-11
1959	1959-03-11	1959-12-01
1960	1960-03-18	1960-10-22
1961	1961-01-17	1961-11-05
1962	1962-01-07	1962-11-08
1963	1963-02-03	1963-11-11
1964	1964-04-13	1964-11-30
1965	1965-04-19	1965-12-04
1966	1966-03-30	1966-11-02
1967	1967-02-28	1967-11-13
1968	1968-02-24	1968-11-10
1969	1969-01-05	1969-11-03
1970	1970-03-14	1970-11-01
1971	1971-01-17	1971-11-04
1972	1972-03-04	1972-12-01
1973	1973-05-02	1973-10-31
1974	1974-04-30	1974-11-13
1975	1975-01-14	1975-12-08
1976	1976-01-17	1976-11-16
1977	1977-02-12	1977-11-26
1978	1978-03-16	1978-11-08
1979	1979-05-11	1979-12-05
1980	1980-04-08	1980-12-29
1981	1981-02-16	1981-11-03
1982	1982-04-20	1982-10-25
1983	1983-05-17	1983-11-03
1984	1984-03-20	1984-10-08
1985	1985-02-13	1985-12-24
1986	1986-02-24	1986-11-12
1987	1987-04-07	1987-10-27
1988	1988-02-09	1988-11-05
1989	1989-02-23	1989-11-20
1990	1990-03-19	1990-11-23
1991	1991-02-09	1991-11-26
1992	1992-02-24	1992-10-23
1993	1993-03-06	1993-11-03
1994	1994-03-02	1994-10-31
1995	1995-02-01	1995-11-24
1996	1996-02-07	1996-11-12
1997	1997-03-05	1997-11-04
1998	1998-03-11	1998-10-23
1999	1999-02-23	1999-11-12
2000	2000-03-18	2000-10-18
2001	2001-02-04	2001-11-08
2002	2002-02-21	2002-11-21
2003	2003-01-30	2003-10-28
2004	2004-03-08	2004-10-15
2005	2005-05-13	2005-11-01
2006	2006-04-13	2006-11-20
2007	2007-02-04	2007-11-15
2008	2008-03-22	2008-11-18
2009	2009-03-18	2009-11-03
2010	2010-03-16	2010-12-12
2011	2011-01-17	2011-10-30
2012	2012-01-04	2012-11-24
2013	2013-03-01	2013-11-14
2014	2014-01-16	2014-11-27
2015	2015-02-11	2015-11-22
2016	2016-02-09	2016-11-15
2017	2017-03-09	2017-12-30
2018	2018-01-29	2018-11-04
2019	2019-04-08	2019-11-19
2020	2020-02-29	2020-11-17
2021	2021-01-14	2021-12-01
2022	2022-02-09	2022-10-30
2023	2023-04-09	2023-11-04
2024	2024-04-10	2024-10-26
2025	2025-02-26	2025-12-11
2026	2026-01-31	2026-09-29

Every Fixed Threshold

Fixed thresholds at Pasadena
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	119	154	2014	102
35 C (95 F): Days	119	58	2022	34
40 C (104 F): Days	74	11	2020	1
45 C (113 F): Days	4	3	2020	1
90 F (32.2 C): Days	119	111	2022	71
100 F (37.8 C): Days	112	24	2020	6
110 F (43.3 C): Days	9	3	2020	2
0 C (32 F): Frost days (min	63	21	1916	1
20 C (68 F): Tropical nights (min	100	51	2022	40
25 C (77 F): Days with min	19	6	2022	1
10 mm (0.39 in): Days with 10 mm or more rain	115	32	1983	7
25 mm (0.98 in): Days with 25 mm or more rain	112	17	1941	2
50 mm (1.97 in): Days with 50 mm or more rain	85	8	1980	1
100 mm (3.94 in): Days with 100 mm or more rain	29	3	1914	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.

Download the Data

Data for Pasadena 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).

Pasadena Threshold Days by Year (USC00046719)

Key Facts for Pasadena Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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