Viralimalai Threshold Days by Year (IN020131700)

5 fixed thresholds counted per year at Viralimalai (IN020131700): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Viralimalai Thresholds

Viralimalai: days with 10 mm (0.39 in) or more of precipitation in 63 years, most in 1944 with 43.
Viralimalai: days with 25 mm (0.98 in) or more of precipitation in 63 years, most in 1915 with 20.
Viralimalai: days with 50 mm (1.97 in) or more of precipitation in 61 years, most in 1915 with 6.
Viralimalai: days with 100 mm (3.94 in) or more of precipitation in 17 years, most in 1931 with 3.
5 fixed thresholds have at least one qualifying day at Viralimalai.

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

63 years with a qualifying day

Days per year at Viralimalai with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 43 in 1944.

Days with 10 mm (0.39 in) or more of precipitation per year at Viralimalai
Year	Days	Decade average
1901	26	23.8
1902	20	23.8
1903	31	23.8
1904	11	23.8
1905	25	23.8
1906	25	23.8
1907	28	23.8
1908	20	23.8
1909	28	23.8
1910	22	27.6
1911	16	27.6
1912	36	27.6
1913	31	27.6
1914	21	27.6
1915	35	27.6
1916	21	27.6
1917	29	27.6
1918	34	27.6
1919	31	27.6
1920	42	27.5
1921	27	27.5
1922	33	27.5
1923	25	27.5
1924	24	27.5
1925	26	27.5
1926	18	27.5
1927	22	27.5
1928	35	27.5
1929	23	27.5
1930	24	23.3
1931	21	23.3
1932	26	23.3
1933	23	23.3
1934	13	23.3
1935	24	23.3
1936	20	23.3
1937	22	23.3
1938	29	23.3
1939	31	23.3
1940	32	27.8
1941	28	27.8
1942	27	27.8
1943	31	27.8
1944	43	27.8
1945	16	27.8
1946	34	27.8
1947	26	27.8
1948	18	27.8
1949	23	27.8
1950	8	23.2
1951	25	23.2
1952	15	23.2
1953	28	23.2
1954	34	23.2
1955	23	23.2
1956	25	23.2
1957	28	23.2
1958	25	23.2
1959	21	23.2
1960	20	20.5
1961	23	20.5
1962	24	20.5
1963	15	20.5

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

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

Every Fixed Threshold

Fixed thresholds at Viralimalai
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	63	43	1944	15
25 mm (0.98 in): Days with 25 mm or more rain	63	20	1915	6
50 mm (1.97 in): Days with 50 mm or more rain	61	6	1915	2
100 mm (3.94 in): Days with 100 mm or more rain	17	3	1931	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	1921	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.

Download the Data

Data for Viralimalai 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).

Viralimalai Threshold Days by Year (IN020131700)

Key Facts for Viralimalai Thresholds

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

Every Fixed Threshold

Download the Data

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