Major Isidoro (Sertaozinho) Threshold Days by Year (BR038960060)

4 fixed thresholds counted per year at Major Isidoro (Sertaozinho) (BR038960060): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Major Isidoro (Sertaozinho) Thresholds

Major Isidoro (Sertaozinho): days with 10 mm (0.39 in) or more of precipitation in 67 years, most in 1921 with 31.
Major Isidoro (Sertaozinho): days with 25 mm (0.98 in) or more of precipitation in 64 years, most in 1947 with 13.
Major Isidoro (Sertaozinho): days with 50 mm (1.97 in) or more of precipitation in 41 years, most in 1945 with 3.
Major Isidoro (Sertaozinho): days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1944 with 1.
4 fixed thresholds have at least one qualifying day at Major Isidoro (Sertaozinho).

Days with 10 mm (0.39 in) or more of precipitation

67 years with a qualifying day

Days per year at Major Isidoro (Sertaozinho) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 31 in 1921.

Days with 10 mm (0.39 in) or more of precipitation per year at Major Isidoro (Sertaozinho)
Year	Days	Decade average
1914	25	19.7
1915	9	19.7
1916	22	19.7
1917	22	19.7
1918	26	19.7
1919	14	19.7
1920	14	14.6
1921	31	14.6
1922	19	14.6
1925	5	14.6
1926	12	14.6
1927	13	14.6
1928	9	14.6
1929	14	14.6
1930	18	16.5
1931	10	16.5
1932	6	16.5
1933	17	16.5
1934	16	16.5
1935	30	16.5
1936	25	16.5
1937	21	16.5
1938	9	16.5
1939	13	16.5
1941	16	20.1
1942	11	20.1
1943	15	20.1
1944	29	20.1
1945	21	20.1
1946	15	20.1
1947	27	20.1
1948	29	20.1
1949	18	20.1
1950	12	15.9
1951	17	15.9
1952	19	15.9
1953	23	15.9
1954	17	15.9
1955	8	15.9
1956	16	15.9
1957	20	15.9
1958	16	15.9
1959	11	15.9
1960	19	21.9
1961	17	21.9
1962	12	21.9
1963	17	21.9
1964	29	21.9
1965	15	21.9
1966	28	21.9
1967	20	21.9
1968	31	21.9
1969	31	21.9
1970	10	22.2
1971	14	22.2
1972	28	22.2
1973	14	22.2
1974	27	22.2
1975	30	22.2
1976	21	22.2
1977	29	22.2
1978	28	22.2
1979	21	22.2
1980	21	14.3
1981	11	14.3
1982	14	14.3
1983	11	14.3

For each year, a bar from the first to the last day at Major Isidoro (Sertaozinho) meeting 10 mm (0.39 in).

First to last qualifying date each year at Major Isidoro (Sertaozinho)
Year	First date	Last date
1914	1914-01-16	1914-10-30
1915	1915-04-03	1915-12-17
1916	1916-02-11	1916-11-27
1917	1917-01-28	1917-12-15
1918	1918-01-12	1918-12-31
1919	1919-01-01	1919-08-24
1920	1920-03-20	1920-12-14
1921	1921-01-09	1921-11-28
1922	1922-01-27	1922-11-29
1925	1925-01-24	1925-08-14
1926	1926-02-14	1926-11-24
1927	1927-02-05	1927-07-23
1928	1928-01-06	1928-12-01
1929	1929-02-04	1929-12-04
1930	1930-01-02	1930-10-03
1931	1931-04-11	1931-11-03
1932	1932-01-21	1932-08-17
1933	1933-02-11	1933-12-27
1934	1934-02-24	1934-12-25
1935	1935-01-02	1935-11-25
1936	1936-02-11	1936-11-17
1937	1937-01-28	1937-08-29
1938	1938-02-15	1938-07-06
1939	1939-01-20	1939-11-21
1941	1941-02-10	1941-12-05
1942	1942-04-18	1942-12-05
1943	1943-02-01	1943-12-30
1944	1944-01-19	1944-11-25
1945	1945-01-09	1945-07-17
1946	1946-02-13	1946-12-22
1947	1947-01-28	1947-12-23
1948	1948-01-18	1948-11-12
1949	1949-04-30	1949-11-29
1950	1950-02-23	1950-12-29
1951	1951-03-21	1951-12-15
1952	1952-03-04	1952-12-18
1953	1953-02-10	1953-12-01
1954	1954-01-06	1954-12-19
1955	1955-01-19	1955-11-14
1956	1956-01-25	1956-11-18
1957	1957-01-15	1957-06-17
1958	1958-01-31	1958-12-26
1959	1959-03-02	1959-12-31
1960	1960-02-01	1960-08-26
1961	1961-01-19	1961-07-25
1962	1962-01-16	1962-11-13
1963	1963-02-12	1963-12-23
1964	1964-01-01	1964-12-07
1965	1965-02-15	1965-10-07
1966	1966-01-30	1966-09-26
1967	1967-04-04	1967-12-29
1968	1968-01-23	1968-11-16
1969	1969-01-25	1969-12-19
1970	1970-01-13	1970-12-17
1971	1971-04-04	1971-10-23
1972	1972-01-20	1972-12-26
1973	1973-01-16	1973-09-12
1974	1974-01-14	1974-11-13
1975	1975-02-11	1975-09-18
1976	1976-02-02	1976-12-05
1977	1977-01-19	1977-12-28
1978	1978-02-06	1978-09-24
1979	1979-01-15	1979-12-21
1980	1980-01-05	1980-11-12
1981	1981-03-12	1981-12-24
1982	1982-02-19	1982-09-25
1983	1983-01-21	1983-12-04

Every Fixed Threshold

Fixed thresholds at Major Isidoro (Sertaozinho)
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
10 mm (0.39 in): Days with 10 mm or more rain	67	31	1921	11
25 mm (0.98 in): Days with 25 mm or more rain	64	13	1947	1
50 mm (1.97 in): Days with 50 mm or more rain	41	3	1945	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1944	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1914.

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Data for Major Isidoro (Sertaozinho) 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).

Major Isidoro (Sertaozinho) Threshold Days by Year (BR038960060)

Key Facts for Major Isidoro (Sertaozinho) Thresholds

Days with 10 mm (0.39 in) or more of precipitation

Every Fixed Threshold

Download the Data

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