San Fernando Threshold Days by Year (USC00047759)

15 fixed thresholds counted per year at San Fernando (USC00047759): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for San Fernando Thresholds

San Fernando: days with a maximum temperature at or above 30 C (86 F) in 54 years, most in 1931 with 153.
San Fernando: days with a maximum temperature at or above 35 C (95 F) in 54 years, most in 1929 with 79.
San Fernando: days with a maximum temperature at or above 90 F (32.2 C) in 54 years, most in 1931 with 117.
San Fernando: days with a maximum temperature at or above 100 F (37.8 C) in 54 years, most in 1929 with 50.
15 fixed thresholds have at least one qualifying day at San Fernando.

Days at or above 30 C (86 F)

54 years with a qualifying day

Days per year at San Fernando with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 153 in 1931.

Days at or above 30 C (86 F) per year at San Fernando
Year	Days	Decade average
1919	95	95
1920	77	101.2
1921	102	101.2
1922	113	101.2
1923	80	101.2
1924	106	101.2
1925	77	101.2
1926	103	101.2
1927	100	101.2
1928	113	101.2
1929	141	101.2
1930	135	126.2
1931	153	126.2
1932	120	126.2
1933	132	126.2
1934	125	126.2
1935	107	126.2
1936	140	126.2
1937	128	126.2
1938	115	126.2
1939	107	126.2
1940	123	106.2
1941	108	106.2
1942	98	106.2
1943	122	106.2
1944	76	106.2
1945	95	106.2
1946	127	106.2
1947	103	106.2
1948	99	106.2
1949	111	106.2
1950	98	106.7
1951	90	106.7
1952	117	106.7
1953	103	106.7
1954	111	106.7
1955	98	106.7
1956	104	106.7
1957	98	106.7
1958	133	106.7
1959	115	106.7
1960	134	114.6
1961	90	114.6
1962	120	114.6
1964	108	114.6
1965	107	114.6
1966	122	114.6
1967	120	114.6
1968	121	114.6
1969	109	114.6
1970	117	104
1971	112	104
1972	95	104
1973	92	104

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

First to last qualifying date each year at San Fernando
Year	First date	Last date
1919	1919-04-02	1919-11-18
1920	1920-04-27	1920-09-30
1921	1921-02-25	1921-11-05
1922	1922-04-19	1922-10-26
1923	1923-05-02	1923-10-21
1924	1924-04-18	1924-11-22
1925	1925-03-21	1925-10-02
1926	1926-03-24	1926-11-08
1927	1927-03-24	1927-10-22
1928	1928-01-13	1928-10-21
1929	1929-04-16	1929-12-14
1930	1930-02-07	1930-11-12
1931	1931-03-15	1931-11-10
1932	1932-02-27	1932-12-04
1933	1933-04-01	1933-11-25
1934	1934-03-09	1934-11-06
1935	1935-02-18	1935-10-10
1936	1936-03-11	1936-11-18
1937	1937-04-14	1937-11-27
1938	1938-04-08	1938-12-08
1939	1939-03-15	1939-12-04
1940	1940-04-10	1940-10-20
1941	1941-05-05	1941-11-15
1942	1942-03-29	1942-11-13
1943	1943-04-30	1943-10-15
1944	1944-05-03	1944-10-27
1945	1945-04-06	1945-11-04
1946	1946-03-08	1946-10-25
1947	1947-03-17	1947-10-31
1948	1948-01-10	1948-11-06
1949	1949-04-10	1949-11-30
1950	1950-04-02	1950-11-24
1951	1951-02-09	1951-10-19
1952	1952-04-04	1952-11-04
1953	1953-03-23	1953-10-31
1954	1954-02-22	1954-11-22
1955	1955-03-25	1955-11-10
1956	1956-04-20	1956-11-17
1957	1957-02-13	1957-10-25
1958	1958-04-15	1958-12-11
1959	1959-03-10	1959-12-02
1960	1960-03-18	1960-10-30
1961	1961-02-21	1961-10-17
1962	1962-01-07	1962-11-08
1964	1964-01-01	1964-11-04
1965	1965-04-19	1965-11-04
1966	1966-03-30	1966-11-03
1967	1967-03-01	1967-11-13
1968	1968-02-23	1968-11-23
1969	1969-01-05	1969-11-03
1970	1970-03-14	1970-11-03
1971	1971-01-18	1971-11-04
1972	1972-03-04	1972-11-26
1973	1973-04-26	1973-11-10

Every Fixed Threshold

Fixed thresholds at San Fernando
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	54	153	1931	92
35 C (95 F): Days	54	79	1929	39
40 C (104 F): Days	51	15	1929	5
45 C (113 F): Days	5	2	1960	1
90 F (32.2 C): Days	54	117	1931	70
100 F (37.8 C): Days	54	50	1929	16
110 F (43.3 C): Days	16	5	1955	1
0 C (32 F): Frost days (min	50	27	1948	4
20 C (68 F): Tropical nights (min	46	13	1967	3
25 C (77 F): Days with min	5	1	1955	2
10 mm (0.39 in): Days with 10 mm or more rain	53	28	1941	16
25 mm (0.98 in): Days with 25 mm or more rain	51	14	1941	7
50 mm (1.97 in): Days with 50 mm or more rain	31	5	1965	2
100 mm (3.94 in): Days with 100 mm or more rain	6	1	1934	1
10 cm (3.9 in): Days with 10 cm or more snowfall	1	1	1949	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1919.

Download the Data

Data for San Fernando 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).

San Fernando Threshold Days by Year (USC00047759)

Key Facts for San Fernando Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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