Cuyamaca Threshold Days by Year

18 fixed thresholds counted per year at Cuyamaca (USC00042239): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Cuyamaca Thresholds

Cuyamaca: days with a maximum temperature at or above 30 C (86 F) in 113 years, most in 1924 with 85.
Cuyamaca: days with a maximum temperature at or above 90 F (32.2 C) in 109 years, most in 1925 with 56.
Cuyamaca: nights with a minimum temperature at or below 0 C (32 F) in 109 years, most in 1948 with 154.
Cuyamaca: days with 10 mm (0.39 in) or more of precipitation in 82 years, most in 1983 with 46.
18 fixed thresholds have at least one qualifying day at Cuyamaca.

Days at or above 30 C (86 F)

113 years with a qualifying day

Days per year at Cuyamaca with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 85 in 1924.

Days at or above 30 C (86 F) per year at Cuyamaca
Year	Days	Decade average
1899	12	12
1903	2	13.5
1909	25	13.5
1911	18	21.8
1912	1	21.8
1913	17	21.8
1916	15	21.8
1918	24	21.8
1919	56	21.8
1920	80	50.7
1921	35	50.7
1922	39	50.7
1923	24	50.7
1924	85	50.7
1925	81	50.7
1926	34	50.7
1927	27	50.7
1929	51	50.7
1930	43	26.6
1931	45	26.6
1932	33	26.6
1933	24	26.6
1934	15	26.6
1935	12	26.6
1936	15	26.6
1937	9	26.6
1938	9	26.6
1939	61	26.6
1940	72	51
1941	34	51
1942	66	51
1943	32	51
1944	28	51
1945	61	51
1946	56	51
1947	60	51
1948	52	51
1949	49	51
1950	40	46
1951	41	46
1952	37	46
1953	49	46
1954	32	46
1955	34	46
1956	53	46
1957	57	46
1958	49	46
1959	68	46
1960	65	55.1
1961	61	55.1
1962	61	55.1
1963	45	55.1
1964	70	55.1
1965	48	55.1
1966	66	55.1
1967	43	55.1
1968	38	55.1
1969	54	55.1
1970	48	34.1
1971	35	34.1
1972	35	34.1
1973	38	34.1
1974	35	34.1
1975	22	34.1
1976	24	34.1
1977	32	34.1
1978	39	34.1
1979	33	34.1
1980	39	33.8
1981	44	33.8
1982	39	33.8
1983	31	33.8
1984	31	33.8
1985	31	33.8
1986	27	33.8
1987	23	33.8
1988	38	33.8
1989	35	33.8
1990	35	37.1
1991	25	37.1
1992	33	37.1
1993	30	37.1
1994	33	37.1
1995	50	37.1
1996	54	37.1
1998	40	37.1
1999	34	37.1
2000	56	57.6
2001	61	57.6
2002	68	57.6
2004	51	57.6
2005	46	57.6
2006	57	57.6
2007	58	57.6
2008	64	57.6
2009	57	57.6
2010	40	37.7
2011	46	37.7
2012	56	37.7
2013	49	37.7
2014	21	37.7
2015	28	37.7
2016	40	37.7
2017	37	37.7
2018	31	37.7
2019	29	37.7
2020	49	48.9
2021	55	48.9
2022	49	48.9
2023	39	48.9
2024	67	48.9
2025	33	48.9
2026	50	48.9

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

First to last qualifying date each year at Cuyamaca
Year	First date	Last date
1899	1899-06-17	1899-09-27
1903	1903-07-10	1903-08-08
1909	1909-06-02	1909-08-27
1911	1911-07-05	1911-09-01
1912	1912-08-06	1912-08-06
1913	1913-06-22	1913-09-12
1916	1916-06-13	1916-08-07
1918	1918-06-12	1918-08-29
1919	1919-06-20	1919-10-18
1920	1920-05-16	1920-08-27
1921	1921-06-15	1921-09-26
1922	1922-06-06	1922-09-10
1923	1923-07-01	1923-08-14
1924	1924-05-18	1924-09-29
1925	1925-06-13	1925-09-18
1926	1926-06-05	1926-09-05
1927	1927-05-14	1927-09-19
1929	1929-06-13	1929-09-15
1930	1930-04-21	1930-09-05
1931	1931-05-08	1931-09-10
1932	1932-06-20	1932-09-11
1933	1933-06-12	1933-08-11
1934	1934-05-09	1934-08-18
1935	1935-06-05	1935-08-20
1936	1936-06-18	1936-07-18
1937	1937-07-02	1937-08-19
1938	1938-07-19	1938-08-13
1939	1939-06-12	1939-09-03
1940	1940-06-12	1940-09-25
1941	1941-05-08	1941-09-11
1942	1942-06-17	1942-09-27
1943	1943-05-02	1943-09-21
1944	1944-06-29	1944-09-25
1945	1945-06-12	1945-09-15
1946	1946-06-04	1946-09-26
1947	1947-05-02	1947-09-28
1948	1948-06-28	1948-10-08
1949	1949-06-09	1949-09-30
1950	1950-06-20	1950-10-14
1951	1951-05-26	1951-09-19
1952	1952-07-03	1952-09-19
1953	1953-06-22	1953-09-26
1954	1954-06-22	1954-10-09
1955	1955-06-08	1955-10-03
1956	1956-06-12	1956-09-29
1957	1957-06-03	1957-09-10
1958	1958-06-26	1958-10-18
1959	1959-06-12	1959-10-24
1960	1960-05-12	1960-09-28
1961	1961-06-14	1961-10-02
1962	1962-06-20	1962-10-02
1963	1963-06-17	1963-10-01
1964	1964-06-15	1964-10-12
1965	1965-07-02	1965-10-13
1966	1966-06-14	1966-09-25
1967	1967-05-21	1967-08-18
1968	1968-05-28	1968-09-14
1969	1969-05-30	1969-09-30
1970	1970-05-05	1970-09-11
1971	1971-06-21	1971-09-18
1972	1972-05-14	1972-10-01
1973	1973-05-30	1973-09-07
1974	1974-05-27	1974-09-13
1975	1975-07-09	1975-09-06
1976	1976-06-25	1976-09-02
1977	1977-07-08	1977-09-09
1978	1978-06-07	1978-10-01
1979	1979-06-12	1979-09-15
1980	1980-06-28	1980-10-09
1981	1981-06-05	1981-09-02
1982	1982-07-12	1982-09-25
1983	1983-05-28	1983-09-17
1984	1984-05-29	1984-09-19
1985	1985-06-07	1985-09-01
1986	1986-06-12	1986-09-08
1987	1987-06-05	1987-10-08
1988	1988-06-29	1988-10-04
1989	1989-06-14	1989-09-25
1990	1990-06-21	1990-09-14
1991	1991-06-11	1991-10-03
1992	1992-07-06	1992-09-30
1993	1993-06-20	1993-10-01
1994	1994-06-09	1994-09-29
1995	1995-06-12	1995-09-21
1996	1996-05-12	1996-10-10
1998	1998-06-19	1998-09-18
1999	1999-06-15	1999-10-14
2000	2000-05-22	2000-09-21
2001	2001-05-09	2001-09-30
2002	2002-05-31	2002-09-27
2004	2004-06-05	2004-09-27
2005	2005-06-21	2005-09-27
2006	2006-05-02	2006-09-07
2007	2007-06-04	2007-09-13
2008	2008-04-29	2008-10-26
2009	2009-05-18	2009-10-18
2010	2010-06-28	2010-09-28
2011	2011-06-21	2011-10-14
2012	2012-05-27	2012-10-03
2013	2013-05-14	2013-09-17
2014	2014-06-09	2014-09-15
2015	2015-06-16	2015-09-08
2016	2016-06-02	2016-09-01
2017	2017-06-19	2017-09-02
2018	2018-06-04	2018-09-28
2019	2019-06-12	2019-09-15
2020	2020-05-29	2020-10-16
2021	2021-06-03	2021-09-23
2022	2022-06-09	2022-09-28
2023	2023-07-01	2023-09-10
2024	2024-06-05	2024-10-07
2025	2025-06-10	2025-09-16
2026	2026-03-20	2026-09-12

Every Fixed Threshold

Fixed thresholds at Cuyamaca
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	113	85	1924	50
35 C (95 F): Days	66	21	1925	4
40 C (104 F): Days	2	2	1969	2
90 F (32.2 C): Days	109	56	1925	27
100 F (37.8 C): Days	14	3	1969	1
110 F (43.3 C): Days	1	1	1969	1
0 C (32 F): Ice days (max	65	17	1937	1
0 C (32 F): Frost days (min	109	154	1948	25
-10 C (14 F): Days with min	60	16	1949	2
20 C (68 F): Tropical nights (min	59	15	1931	7
10 mm (0.39 in): Days with 10 mm or more rain	82	46	1983	10
25 mm (0.98 in): Days with 25 mm or more rain	82	26	1983	4
50 mm (1.97 in): Days with 50 mm or more rain	77	14	1980	3
100 mm (3.94 in): Days with 100 mm or more rain	25	3	1980	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	1965	1
10 cm (3.9 in): Days with 10 cm or more snowfall	58	13	1949	3
25 cm (9.8 in): Days with 25 cm or more snowfall	25	4	1987	1
50 cm (19.7 in): Days with 50 cm or more snowfall	2	1	1982	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1899.

Download the Data

Data for Cuyamaca 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).

Cuyamaca Threshold Days by Year

Key Facts for Cuyamaca Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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