Usilampatti Threshold Days by Year

5 fixed thresholds counted per year at Usilampatti (IN020080300): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Usilampatti Thresholds

Usilampatti: days with 10 mm (0.39 in) or more of precipitation in 70 years, most in 1964 with 40.
Usilampatti: days with 25 mm (0.98 in) or more of precipitation in 70 years, most in 1944 with 23.
Usilampatti: days with 50 mm (1.97 in) or more of precipitation in 70 years, most in 1910 with 9.
Usilampatti: days with 100 mm (3.94 in) or more of precipitation in 14 years, most in 1930 with 4.
5 fixed thresholds have at least one qualifying day at Usilampatti.

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

70 years with a qualifying day

Days per year at Usilampatti with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 40 in 1964.

Days with 10 mm (0.39 in) or more of precipitation per year at Usilampatti
Year	Days	Decade average
1901	27	27.2
1902	31	27.2
1903	34	27.2
1904	24	27.2
1905	29	27.2
1906	24	27.2
1907	22	27.2
1908	22	27.2
1909	32	27.2
1910	38	27
1911	19	27
1912	31	27
1913	22	27
1914	27	27
1915	30	27
1916	22	27
1917	27	27
1918	33	27
1919	21	27
1920	35	27
1921	28	27
1922	30	27
1923	23	27
1924	26	27
1925	29	27
1926	19	27
1927	26	27
1928	21	27
1929	33	27
1930	37	27.3
1931	25	27.3
1932	33	27.3
1933	37	27.3
1934	20	27.3
1935	18	27.3
1936	24	27.3
1937	27	27.3
1938	28	27.3
1939	24	27.3
1940	38	28.1
1941	33	28.1
1942	32	28.1
1943	25	28.1
1944	38	28.1
1945	20	28.1
1946	28	28.1
1947	22	28.1
1948	23	28.1
1949	22	28.1
1950	24	25.9
1951	32	25.9
1952	15	25.9
1953	30	25.9
1954	31	25.9
1955	32	25.9
1956	31	25.9
1957	19	25.9
1958	22	25.9
1959	23	25.9
1960	29	25.8
1961	18	25.8
1962	22	25.8
1963	30	25.8
1964	40	25.8
1965	29	25.8
1966	39	25.8
1967	19	25.8
1968	14	25.8
1969	18	25.8
1970	23	23

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

First to last qualifying date each year at Usilampatti
Year	First date	Last date
1901	1901-01-11	1901-12-10
1902	1902-01-06	1902-12-16
1903	1903-01-06	1903-12-21
1904	1904-01-02	1904-10-28
1905	1905-04-03	1905-11-25
1906	1906-01-18	1906-12-07
1907	1907-03-28	1907-12-13
1908	1908-02-24	1908-10-31
1909	1909-01-02	1909-11-26
1910	1910-01-30	1910-11-22
1911	1911-05-23	1911-12-26
1912	1912-04-18	1912-11-23
1913	1913-04-19	1913-12-20
1914	1914-03-09	1914-12-06
1915	1915-01-19	1915-11-28
1916	1916-05-02	1916-12-09
1917	1917-02-02	1917-12-09
1918	1918-01-14	1918-12-19
1919	1919-01-07	1919-11-30
1920	1920-01-01	1920-11-25
1921	1921-01-13	1921-12-30
1922	1922-02-05	1922-12-02
1923	1923-01-12	1923-12-17
1924	1924-01-08	1924-11-29
1925	1925-03-19	1925-12-28
1926	1926-01-08	1926-11-05
1927	1927-04-08	1927-12-01
1928	1928-02-04	1928-12-28
1929	1929-01-09	1929-12-08
1930	1930-01-09	1930-12-01
1931	1931-04-14	1931-12-24
1932	1932-02-22	1932-12-01
1933	1933-03-13	1933-12-18
1934	1934-01-10	1934-10-31
1935	1935-04-02	1935-11-18
1936	1936-02-09	1936-12-19
1937	1937-03-20	1937-11-21
1938	1938-02-08	1938-12-27
1939	1939-03-16	1939-11-16
1940	1940-04-25	1940-12-13
1941	1941-01-07	1941-12-03
1942	1942-04-03	1942-12-22
1943	1943-01-03	1943-11-17
1944	1944-02-19	1944-11-27
1945	1945-01-08	1945-11-15
1946	1946-02-26	1946-12-08
1947	1947-01-07	1947-12-15
1948	1948-01-17	1948-12-08
1949	1949-02-08	1949-11-01
1950	1950-02-20	1950-11-16
1951	1951-03-31	1951-11-23
1952	1952-02-21	1952-12-10
1953	1953-02-22	1953-11-14
1954	1954-01-06	1954-12-16
1955	1955-03-09	1955-12-07
1956	1956-04-23	1956-12-27
1957	1957-04-24	1957-12-29
1958	1958-03-24	1958-11-25
1959	1959-02-01	1959-12-01
1960	1960-03-08	1960-11-25
1961	1961-01-07	1961-12-05
1962	1962-04-05	1962-12-04
1963	1963-03-26	1963-12-11
1964	1964-05-02	1964-12-25
1965	1965-04-01	1965-12-11
1966	1966-04-19	1966-12-21
1967	1967-03-19	1967-11-03
1968	1968-03-27	1968-12-18
1969	1969-04-05	1969-12-14
1970	1970-02-19	1970-11-22

Every Fixed Threshold

Fixed thresholds at Usilampatti
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	70	40	1964	23
25 mm (0.98 in): Days with 25 mm or more rain	70	23	1944	7
50 mm (1.97 in): Days with 50 mm or more rain	70	9	1910	4
100 mm (3.94 in): Days with 100 mm or more rain	14	4	1930	3
200 mm (7.87 in): Days with 200 mm or more rain	1	1	1925	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1901.

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Data for Usilampatti 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).

Usilampatti Threshold Days by Year

Key Facts for Usilampatti Thresholds

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

Every Fixed Threshold

Download the Data

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