San Bernardino F S 226 Threshold Days by Year (USC00047723)

14 fixed thresholds counted per year at San Bernardino F S 226 (USC00047723): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for San Bernardino F S 226 Thresholds

San Bernardino F S 226: nights with a minimum temperature at or below 0 C (32 F) in 98 years, most in 1903 with 49.
San Bernardino F S 226: days with a maximum temperature at or above 30 C (86 F) in 96 years, most in 1931 with 181.
San Bernardino F S 226: days with a maximum temperature at or above 35 C (95 F) in 96 years, most in 1960 with 105.
San Bernardino F S 226: days with a maximum temperature at or above 90 F (32.2 C) in 96 years, most in 1931 with 140.
14 fixed thresholds have at least one qualifying day at San Bernardino F S 226.

Days at or above 30 C (86 F)

96 years with a qualifying day

Days per year at San Bernardino F S 226 with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 181 in 1931.

Days at or above 30 C (86 F) per year at San Bernardino F S 226
Year	Days	Decade average
1893	113	121.6
1894	112	121.6
1895	115	121.6
1896	131	121.6
1897	106	121.6
1898	139	121.6
1899	135	121.6
1900	143	137.4
1901	138	137.4
1902	136	137.4
1903	151	137.4
1904	153	137.4
1905	128	137.4
1906	139	137.4
1907	116	137.4
1908	138	137.4
1909	132	137.4
1910	174	138.6
1911	128	138.6
1912	120	138.6
1913	131	138.6
1914	140	138.6
1915	152	138.6
1916	130	138.6
1917	150	138.6
1918	133	138.6
1919	128	138.6
1920	109	132.5
1921	147	132.5
1922	142	132.5
1923	110	132.5
1924	134	132.5
1925	124	132.5
1926	152	132.5
1927	146	132.5
1928	131	132.5
1929	130	132.5
1930	139	147
1931	181	147
1932	135	147
1933	147	147
1935	128	147
1936	149	147
1937	145	147
1938	141	147
1939	158	147
1940	157	140.1
1941	131	140.1
1942	136	140.1
1943	161	140.1
1944	122	140.1
1945	123	140.1
1946	147	140.1
1947	143	140.1
1948	133	140.1
1949	148	140.1
1950	136	134.7
1951	121	134.7
1952	140	134.7
1953	125	134.7
1954	150	134.7
1955	119	134.7
1956	132	134.7
1957	122	134.7
1958	158	134.7
1959	144	134.7
1960	157	136.5
1961	129	136.5
1962	148	136.5
1963	118	136.5
1964	137	136.5
1965	138	136.5
1966	149	136.5
1967	138	136.5
1968	133	136.5
1969	118	136.5
1970	136	136.9
1971	149	136.9
1972	130	136.9
1973	123	136.9
1974	135	136.9
1975	134	136.9
1976	134	136.9
1977	146	136.9
1978	146	136.9
1979	136	136.9
1980	146	127.8
1981	146	127.8
1982	101	127.8
1983	108	127.8
1984	146	127.8
1985	120	127.8
1990	114	115.3
1992	109	115.3
1995	123	115.3
2001	153	153

For each year, a bar from the first to the last day at San Bernardino F S 226 meeting 30 C (86 F).

First to last qualifying date each year at San Bernardino F S 226
Year	First date	Last date
1893	1893-03-27	1893-10-14
1894	1894-04-09	1894-11-13
1895	1895-03-25	1895-11-19
1896	1896-03-19	1896-10-17
1897	1897-04-09	1897-11-01
1898	1898-04-08	1898-11-06
1899	1899-03-06	1899-10-09
1900	1900-02-21	1900-11-13
1901	1901-02-26	1901-12-19
1902	1902-01-04	1902-12-25
1903	1903-04-30	1903-11-29
1904	1904-01-13	1904-11-29
1905	1905-04-04	1905-10-28
1906	1906-03-08	1906-11-15
1907	1907-02-10	1907-11-04
1908	1908-02-25	1908-11-17
1909	1909-04-01	1909-11-04
1910	1910-02-12	1910-12-02
1911	1911-01-05	1911-10-24
1912	1912-05-13	1912-11-27
1913	1913-01-03	1913-11-09
1914	1914-03-05	1914-11-25
1915	1915-03-15	1915-12-23
1916	1916-03-08	1916-11-01
1917	1917-03-26	1917-12-31
1918	1918-01-01	1918-12-03
1919	1919-03-31	1919-11-16
1920	1920-01-17	1920-10-27
1921	1921-02-12	1921-12-10
1922	1922-03-20	1922-10-25
1923	1923-01-07	1923-11-23
1924	1924-02-13	1924-11-22
1925	1925-02-26	1925-10-27
1926	1926-02-28	1926-11-30
1927	1927-01-03	1927-12-02
1928	1928-01-12	1928-10-23
1929	1929-03-04	1929-12-14
1930	1930-02-07	1930-11-12
1931	1931-01-27	1931-11-06
1932	1932-02-26	1932-11-26
1933	1933-01-09	1933-11-26
1935	1935-02-18	1935-11-21
1936	1936-03-02	1936-11-18
1937	1937-04-14	1937-12-06
1938	1938-04-08	1938-12-08
1939	1939-03-15	1939-12-19
1940	1940-04-10	1940-12-08
1941	1941-04-23	1941-12-02
1942	1942-03-29	1942-12-16
1943	1943-01-14	1943-11-15
1944	1944-03-09	1944-10-29
1945	1945-03-31	1945-11-27
1946	1946-01-23	1946-12-02
1947	1947-03-14	1947-11-29
1948	1948-01-07	1948-11-06
1949	1949-04-10	1949-12-02
1950	1950-02-18	1950-12-10
1951	1951-01-24	1951-11-06
1952	1952-04-03	1952-11-04
1953	1953-03-23	1953-12-14
1954	1954-02-03	1954-11-26
1955	1955-03-25	1955-11-19
1956	1956-03-23	1956-12-28
1957	1957-02-12	1957-10-25
1958	1958-04-15	1958-12-12
1959	1959-01-17	1959-11-24
1960	1960-03-18	1960-11-01
1961	1961-03-01	1961-10-25
1962	1962-01-07	1962-11-08
1963	1963-02-03	1963-10-27
1964	1964-01-01	1964-11-06
1965	1965-02-20	1965-12-04
1966	1966-03-12	1966-11-02
1967	1967-02-28	1967-11-13
1968	1968-02-24	1968-11-11
1969	1969-01-06	1969-11-03
1970	1970-03-14	1970-11-23
1971	1971-01-16	1971-11-10
1972	1972-02-27	1972-12-01
1973	1973-04-26	1973-11-11
1974	1974-03-15	1974-11-13
1975	1975-01-14	1975-12-09
1976	1976-01-16	1976-11-22
1977	1977-02-12	1977-12-05
1978	1978-03-16	1978-10-28
1979	1979-03-06	1979-12-07
1980	1980-04-08	1980-12-26
1981	1981-02-16	1981-11-03
1982	1982-04-19	1982-10-24
1983	1983-05-17	1983-11-04
1984	1984-03-20	1984-11-05
1985	1985-02-15	1985-10-26
1990	1990-03-20	1990-11-13
1992	1992-04-23	1992-10-11
1995	1995-02-19	1995-11-24
2001	2001-02-04	2001-11-20

Every Fixed Threshold

Fixed thresholds at San Bernardino F S 226
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	96	181	1931	153
35 C (95 F): Days	96	105	1960	77
40 C (104 F): Days	93	36	1947	8
45 C (113 F): Days	15	4	1933	1
90 F (32.2 C): Days	96	140	1931	125
100 F (37.8 C): Days	96	62	1971	31
110 F (43.3 C): Days	50	7	1948	1
0 C (32 F): Frost days (min	98	49	1903	3
20 C (68 F): Tropical nights (min	78	55	1984	11
25 C (77 F): Days with min	1	1	1982	1
10 mm (0.39 in): Days with 10 mm or more rain	94	28	1941	8
25 mm (0.98 in): Days with 25 mm or more rain	92	12	1969	2
50 mm (1.97 in): Days with 50 mm or more rain	47	5	1943	1
100 mm (3.94 in): Days with 100 mm or more rain	4	1	1938	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 San Bernardino F S 226 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 Bernardino F S 226 Threshold Days by Year (USC00047723)

Key Facts for San Bernardino F S 226 Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related