Ron Threshold Days by Year (IN009090700)

4 fixed thresholds counted per year at Ron (IN009090700): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ron Thresholds

Ron: days with 10 mm (0.39 in) or more of precipitation in 70 years, most in 1916 with 37.
Ron: days with 25 mm (0.98 in) or more of precipitation in 70 years, most in 1910 with 16.
Ron: days with 50 mm (1.97 in) or more of precipitation in 58 years, most in 1910 with 9.
Ron: days with 100 mm (3.94 in) or more of precipitation in 11 years, most in 1902 with 1.
4 fixed thresholds have at least one qualifying day at Ron.

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

70 years with a qualifying day

Days per year at Ron with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 37 in 1916.

Days with 10 mm (0.39 in) or more of precipitation per year at Ron
Year	Days	Decade average
1901	15	17
1902	20	17
1903	23	17
1904	14	17
1905	17	17
1906	20	17
1907	19	17
1908	9	17
1909	16	17
1910	31	19.7
1911	17	19.7
1912	15	19.7
1913	12	19.7
1914	21	19.7
1915	16	19.7
1916	37	19.7
1917	20	19.7
1918	9	19.7
1919	19	19.7
1920	15	15.1
1921	14	15.1
1922	9	15.1
1923	15	15.1
1924	11	15.1
1925	18	15.1
1926	13	15.1
1927	16	15.1
1928	23	15.1
1929	17	15.1
1930	12	17.1
1931	15	17.1
1932	22	17.1
1933	25	17.1
1934	13	17.1
1935	16	17.1
1936	22	17.1
1937	19	17.1
1938	16	17.1
1939	11	17.1
1940	19	18.7
1941	16	18.7
1942	10	18.7
1943	27	18.7
1944	18	18.7
1945	12	18.7
1946	26	18.7
1947	22	18.7
1948	20	18.7
1949	17	18.7
1950	13	16.6
1951	21	16.6
1952	15	16.6
1953	18	16.6
1954	11	16.6
1955	15	16.6
1956	19	16.6
1957	19	16.6
1958	16	16.6
1959	19	16.6
1960	11	17.6
1961	13	17.6
1962	25	17.6
1963	25	17.6
1964	16	17.6
1965	17	17.6
1966	13	17.6
1967	11	17.6
1968	24	17.6
1969	21	17.6
1970	26	26

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

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

Every Fixed Threshold

Fixed thresholds at Ron
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	37	1916	26
25 mm (0.98 in): Days with 25 mm or more rain	70	16	1910	10
50 mm (1.97 in): Days with 50 mm or more rain	58	9	1910	5
100 mm (3.94 in): Days with 100 mm or more rain	11	1	1902	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 Ron 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).

Ron Threshold Days by Year (IN009090700)

Key Facts for Ron Thresholds

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

Every Fixed Threshold

Download the Data

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