Boolathana Threshold Days by Year

4 fixed thresholds counted per year at Boolathana (ASN00006003): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Boolathana Thresholds

Boolathana: days with 10 mm (0.39 in) or more of precipitation in 84 years, most in 1963 with 20.
Boolathana: days with 25 mm (0.98 in) or more of precipitation in 67 years, most in 1923 with 7.
Boolathana: days with 50 mm (1.97 in) or more of precipitation in 31 years, most in 1923 with 3.
Boolathana: days with 100 mm (3.94 in) or more of precipitation in 5 years, most in 1923 with 2.
4 fixed thresholds have at least one qualifying day at Boolathana.

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

84 years with a qualifying day

Days per year at Boolathana with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 20 in 1963.

Days with 10 mm (0.39 in) or more of precipitation per year at Boolathana
Year	Days	Decade average
1907	10	6
1909	2	6
1910	7	6.3
1911	4	6.3
1912	3	6.3
1913	7	6.3
1916	15	6.3
1917	7	6.3
1918	4	6.3
1919	3	6.3
1920	8	6.2
1922	5	6.2
1923	14	6.2
1924	5	6.2
1925	4	6.2
1926	1	6.2
1930	5	6.3
1932	10	6.3
1933	10	6.3
1935	6	6.3
1938	1	6.3
1939	6	6.3
1940	8	6.2
1941	5	6.2
1942	5	6.2
1943	7	6.2
1944	5	6.2
1945	6	6.2
1946	3	6.2
1947	7	6.2
1949	10	6.2
1950	4	5.5
1951	5	5.5
1952	6	5.5
1953	12	5.5
1954	3	5.5
1955	4	5.5
1956	6	5.5
1957	7	5.5
1958	6	5.5
1959	2	5.5
1960	7	8.9
1961	8	8.9
1962	6	8.9
1963	20	8.9
1964	10	8.9
1965	10	8.9
1967	9	8.9
1968	8	8.9
1969	2	8.9
1970	8	6.5
1971	7	6.5
1972	9	6.5
1973	3	6.5
1974	11	6.5
1975	9	6.5
1976	5	6.5
1977	4	6.5
1978	6	6.5
1979	3	6.5
1980	10	6.8
1981	6	6.8
1982	5	6.8
1983	6	6.8
1984	12	6.8
1985	7	6.8
1986	6	6.8
1987	2	6.8
1989	7	6.8
1990	6	7.1
1991	4	7.1
1992	7	7.1
1993	7	7.1
1994	4	7.1
1995	6	7.1
1996	10	7.1
1997	12	7.1
1998	9	7.1
1999	6	7.1
2000	7	4.6
2001	4	4.6
2002	3	4.6
2003	2	4.6
2004	7	4.6

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

First to last qualifying date each year at Boolathana
Year	First date	Last date
1907	1907-01-01	1907-07-31
1909	1909-07-17	1909-08-03
1910	1910-02-09	1910-07-08
1911	1911-02-08	1911-06-15
1912	1912-05-05	1912-07-29
1913	1913-03-27	1913-09-22
1916	1916-01-18	1916-10-21
1917	1917-01-23	1917-07-24
1918	1918-02-03	1918-06-17
1919	1919-06-07	1919-07-08
1920	1920-03-14	1920-08-05
1922	1922-04-16	1922-07-10
1923	1923-01-16	1923-07-26
1924	1924-06-07	1924-07-25
1925	1925-03-01	1925-06-20
1926	1926-07-16	1926-07-16
1930	1930-06-01	1930-08-04
1932	1932-01-17	1932-12-18
1933	1933-03-04	1933-08-24
1935	1935-03-13	1935-08-05
1938	1938-06-13	1938-06-13
1939	1939-02-13	1939-08-04
1940	1940-01-21	1940-07-27
1941	1941-04-29	1941-07-17
1942	1942-05-17	1942-07-22
1943	1943-01-12	1943-06-27
1944	1944-05-24	1944-11-13
1945	1945-01-07	1945-06-21
1946	1946-02-11	1946-07-02
1947	1947-02-10	1947-09-14
1949	1949-01-25	1949-08-05
1950	1950-05-07	1950-07-28
1951	1951-02-15	1951-07-08
1952	1952-02-27	1952-07-10
1953	1953-03-24	1953-10-03
1954	1954-06-24	1954-08-20
1955	1955-01-20	1955-09-29
1956	1956-03-03	1956-08-31
1957	1957-02-08	1957-08-04
1958	1958-01-21	1958-06-20
1959	1959-06-15	1959-07-25
1960	1960-02-02	1960-07-27
1961	1961-01-26	1961-08-25
1962	1962-01-30	1962-07-09
1963	1963-01-10	1963-07-13
1964	1964-03-30	1964-08-05
1965	1965-01-01	1965-08-09
1967	1967-01-21	1967-08-08
1968	1968-03-22	1968-06-24
1969	1969-05-18	1969-06-13
1970	1970-02-02	1970-06-11
1971	1971-02-20	1971-08-16
1972	1972-05-31	1972-07-29
1973	1973-04-23	1973-07-09
1974	1974-01-02	1974-10-21
1975	1975-02-20	1975-11-03
1976	1976-02-27	1976-08-15
1977	1977-03-09	1977-06-09
1978	1978-04-01	1978-08-16
1979	1979-03-14	1979-08-19
1980	1980-01-22	1980-10-18
1981	1981-02-08	1981-09-04
1982	1982-01-20	1982-06-15
1983	1983-06-02	1983-11-12
1984	1984-02-21	1984-10-06
1985	1985-02-12	1985-08-05
1986	1986-02-20	1986-09-10
1987	1987-06-07	1987-06-17
1989	1989-03-31	1989-07-21
1990	1990-01-27	1990-08-07
1991	1991-02-25	1991-07-02
1992	1992-04-27	1992-08-10
1993	1993-02-06	1993-09-05
1994	1994-06-01	1994-08-04
1995	1995-02-26	1995-12-13
1996	1996-04-20	1996-07-30
1997	1997-03-28	1997-09-05
1998	1998-05-26	1998-10-27
1999	1999-02-07	1999-05-28
2000	2000-03-03	2000-03-26
2001	2001-02-11	2001-10-06
2002	2002-05-18	2002-08-10
2003	2003-06-22	2003-06-25
2004	2004-01-06	2004-07-23

Every Fixed Threshold

Fixed thresholds at Boolathana
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	84	20	1963	7
25 mm (0.98 in): Days with 25 mm or more rain	67	7	1923	6
50 mm (1.97 in): Days with 50 mm or more rain	31	3	1923	1
100 mm (3.94 in): Days with 100 mm or more rain	5	2	1923	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1907.

Download the Data

Data for Boolathana 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Boolathana Threshold Days by Year

Key Facts for Boolathana Thresholds

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

Every Fixed Threshold

Download the Data

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