Arkonam Threshold Days by Year (IN020011500)

5 fixed thresholds counted per year at Arkonam (IN020011500): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Arkonam Thresholds

Arkonam: days with 10 mm (0.39 in) or more of precipitation in 68 years, most in 1970 with 44.
Arkonam: days with 25 mm (0.98 in) or more of precipitation in 68 years, most in 1966 with 22.
Arkonam: days with 50 mm (1.97 in) or more of precipitation in 65 years, most in 1967 with 11.
Arkonam: days with 100 mm (3.94 in) or more of precipitation in 32 years, most in 1970 with 5.
5 fixed thresholds have at least one qualifying day at Arkonam.

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

68 years with a qualifying day

Days per year at Arkonam with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 44 in 1970.

Days with 10 mm (0.39 in) or more of precipitation per year at Arkonam
Year	Days	Decade average
1902	36	29
1903	41	29
1904	18	29
1905	23	29
1906	34	29
1907	24	29
1908	23	29
1909	33	29
1910	29	28.9
1911	32	28.9
1912	20	28.9
1913	23	28.9
1914	33	28.9
1915	28	28.9
1916	35	28.9
1917	34	28.9
1918	25	28.9
1919	30	28.9
1920	36	29.7
1921	30	29.7
1922	32	29.7
1923	21	29.7
1924	24	29.7
1925	35	29.7
1926	29	29.7
1927	30	29.7
1928	33	29.7
1929	27	29.7
1930	39	27.5
1931	39	27.5
1932	23	27.5
1933	18	27.5
1934	25	27.5
1935	30	27.5
1936	28	27.5
1937	28	27.5
1938	21	27.5
1939	24	27.5
1940	26	28.5
1941	24	28.5
1942	27	28.5
1943	31	28.5
1944	41	28.5
1945	21	28.5
1946	40	28.5
1947	18	28.5
1948	27	28.5
1949	30	28.5
1950	22	27
1951	23	27
1952	22	27
1953	32	27
1954	29	27
1955	35	27
1956	35	27
1957	22	27
1958	26	27
1959	24	27
1960	43	34.2
1961	37	34.2
1962	36	34.2
1964	36	34.2
1965	29	34.2
1966	41	34.2
1967	32	34.2
1968	24	34.2
1969	30	34.2
1970	44	44

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

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

Every Fixed Threshold

Fixed thresholds at Arkonam
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	68	44	1970	44
25 mm (0.98 in): Days with 25 mm or more rain	68	22	1966	22
50 mm (1.97 in): Days with 50 mm or more rain	65	11	1967	10
100 mm (3.94 in): Days with 100 mm or more rain	32	5	1970	5
200 mm (7.87 in): Days with 200 mm or more rain	2	1	1924	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1902.

Download the Data

Data for Arkonam 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).

Arkonam Threshold Days by Year (IN020011500)

Key Facts for Arkonam Thresholds

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

Every Fixed Threshold

Download the Data

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