Greenock Threshold Days by Year (ASN00023305)

4 fixed thresholds counted per year at Greenock (ASN00023305): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Greenock Thresholds

Greenock: days with 10 mm (0.39 in) or more of precipitation in 119 years, most in 1916 with 31.
Greenock: days with 25 mm (0.98 in) or more of precipitation in 99 years, most in 1889 with 7.
Greenock: days with 50 mm (1.97 in) or more of precipitation in 14 years, most in 1889 with 2.
Greenock: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1941 with 1.
4 fixed thresholds have at least one qualifying day at Greenock.

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

119 years with a qualifying day

Days per year at Greenock with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 31 in 1916.

Days with 10 mm (0.39 in) or more of precipitation per year at Greenock
Year	Days	Decade average
1884	16	17.5
1885	8	17.5
1886	18	17.5
1887	22	17.5
1888	15	17.5
1889	26	17.5
1890	29	17.1
1891	13	17.1
1892	17	17.1
1893	20	17.1
1894	20	17.1
1895	18	17.1
1896	11	17.1
1897	12	17.1
1898	16	17.1
1899	15	17.1
1900	13	15.7
1901	13	15.7
1902	12	15.7
1903	17	15.7
1904	12	15.7
1905	17	15.7
1906	18	15.7
1907	14	15.7
1908	16	15.7
1909	25	15.7
1910	23	16.6
1911	11	16.6
1912	14	16.6
1913	14	16.6
1914	8	16.6
1915	19	16.6
1916	31	16.6
1917	21	16.6
1918	15	16.6
1919	10	16.6
1920	15	16
1921	18	16
1922	20	16
1923	28	16
1924	15	16
1925	10	16
1926	16	16
1927	13	16
1928	13	16
1929	12	16
1930	12	13.7
1931	12	13.7
1932	17	13.7
1933	16	13.7
1934	14	13.7
1935	16	13.7
1936	11	13.7
1937	16	13.7
1938	10	13.7
1939	13	13.7
1940	8	12.7
1941	17	12.7
1942	21	12.7
1943	10	12.7
1944	7	12.7
1945	14	12.7
1946	14	12.7
1947	17	12.7
1948	9	12.7
1949	10	12.7
1950	11	13.4
1951	18	13.4
1952	15	13.4
1953	11	13.4
1954	10	13.4
1955	22	13.4
1956	19	13.4
1957	5	13.4
1958	16	13.4
1959	7	13.4
1960	19	14.4
1961	16	14.4
1962	10	14.4
1963	17	14.4
1964	18	14.4
1965	6	14.4
1966	15	14.4
1968	20	14.4
1969	9	14.4
1970	13	15.6
1971	18	15.6
1972	11	15.6
1973	17	15.6
1974	23	15.6
1975	17	15.6
1976	6	15.6
1977	16	15.6
1979	19	15.6
1980	13	12.8
1982	3	12.8
1983	17	12.8
1984	11	12.8
1985	15	12.8
1986	13	12.8
1987	13	12.8
1988	18	12.8
1989	12	12.8
1990	15	15.1
1991	19	15.1
1992	28	15.1
1993	9	15.1
1994	6	15.1
1995	11	15.1
1996	19	15.1
1997	14	15.1
1998	13	15.1
1999	17	15.1
2000	18	12.8
2001	15	12.8
2002	10	12.8
2006	5	12.8
2009	16	12.8
2025	2	2

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

First to last qualifying date each year at Greenock
Year	First date	Last date
1884	1884-01-21	1884-12-15
1885	1885-02-28	1885-10-10
1886	1886-01-06	1886-11-25
1887	1887-04-04	1887-12-02
1888	1888-01-02	1888-09-24
1889	1889-01-01	1889-11-15
1890	1890-01-27	1890-11-25
1891	1891-01-05	1891-12-14
1892	1892-01-23	1892-12-12
1893	1893-04-01	1893-11-13
1894	1894-03-06	1894-12-24
1895	1895-01-04	1895-12-10
1896	1896-01-24	1896-12-28
1897	1897-02-16	1897-11-01
1898	1898-02-26	1898-12-23
1899	1899-01-19	1899-11-06
1900	1900-01-22	1900-09-21
1901	1901-01-26	1901-12-31
1902	1902-02-01	1902-12-18
1903	1903-02-15	1903-12-28
1904	1904-01-03	1904-11-03
1905	1905-01-03	1905-10-29
1906	1906-03-24	1906-12-16
1907	1907-04-05	1907-11-23
1908	1908-01-31	1908-10-16
1909	1909-01-04	1909-11-13
1910	1910-03-05	1910-12-23
1911	1911-02-09	1911-12-05
1912	1912-06-25	1912-12-09
1913	1913-02-13	1913-12-22
1914	1914-02-28	1914-12-15
1915	1915-04-10	1915-12-05
1916	1916-01-04	1916-12-13
1917	1917-01-22	1917-12-12
1918	1918-03-05	1918-10-07
1919	1919-02-16	1919-12-27
1920	1920-03-07	1920-12-27
1921	1921-01-02	1921-12-03
1922	1922-01-05	1922-12-30
1923	1923-05-08	1923-12-17
1924	1924-03-27	1924-11-07
1925	1925-02-07	1925-09-17
1926	1926-02-25	1926-10-14
1927	1927-02-05	1927-12-02
1928	1928-01-27	1928-10-06
1929	1929-05-06	1929-12-28
1930	1930-04-24	1930-10-24
1931	1931-03-13	1931-09-30
1932	1932-02-05	1932-12-15
1933	1933-01-20	1933-12-26
1934	1934-01-06	1934-11-08
1935	1935-01-05	1935-10-22
1936	1936-01-08	1936-12-16
1937	1937-01-19	1937-12-11
1938	1938-01-03	1938-08-28
1939	1939-02-25	1939-11-05
1940	1940-01-05	1940-12-19
1941	1941-01-24	1941-12-27
1942	1942-01-20	1942-12-05
1943	1943-02-17	1943-12-17
1944	1944-05-02	1944-12-21
1945	1945-01-31	1945-12-17
1946	1946-01-18	1946-12-27
1947	1947-02-05	1947-11-05
1948	1948-04-11	1948-11-07
1949	1949-02-20	1949-11-21
1950	1950-02-02	1950-11-03
1951	1951-02-22	1951-12-09
1952	1952-01-25	1952-11-27
1953	1953-04-04	1953-12-07
1954	1954-04-14	1954-12-24
1955	1955-02-09	1955-12-03
1956	1956-01-20	1956-10-18
1957	1957-06-19	1957-10-23
1958	1958-02-18	1958-10-11
1959	1959-02-15	1959-12-25
1960	1960-02-02	1960-11-12
1961	1961-02-08	1961-12-17
1962	1962-01-17	1962-10-19
1963	1963-01-14	1963-11-07
1964	1964-01-09	1964-12-22
1965	1965-05-08	1965-09-05
1966	1966-02-14	1966-12-04
1968	1968-01-20	1968-12-23
1969	1969-02-22	1969-12-01
1970	1970-04-28	1970-12-05
1971	1971-03-15	1971-12-10
1972	1972-01-10	1972-12-27
1973	1973-01-20	1973-12-31
1974	1974-01-01	1974-10-24
1975	1975-01-25	1975-10-31
1976	1976-02-18	1976-11-02
1977	1977-01-15	1977-12-02
1979	1979-01-17	1979-11-15
1980	1980-04-18	1980-11-06
1982	1982-03-23	1982-06-21
1983	1983-03-03	1983-11-26
1984	1984-01-26	1984-10-03
1985	1985-03-16	1985-12-08
1986	1986-05-19	1986-12-07
1987	1987-01-25	1987-12-01
1988	1988-05-14	1988-12-26
1989	1989-03-31	1989-12-02
1990	1990-01-11	1990-12-10
1991	1991-01-23	1991-11-04
1992	1992-03-01	1992-12-21
1993	1993-01-24	1993-11-20
1994	1994-06-07	1994-11-07
1995	1995-01-27	1995-10-22
1996	1996-01-01	1996-10-16
1997	1997-02-07	1997-12-18
1998	1998-02-07	1998-11-12
1999	1999-03-18	1999-12-26
2000	2000-02-20	2000-11-09
2001	2001-03-17	2001-11-23
2002	2002-01-21	2002-12-31
2006	2006-01-02	2006-12-22
2009	2009-03-04	2009-12-08
2025	2025-05-27	2025-06-11

Every Fixed Threshold

Fixed thresholds at Greenock
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	119	31	1916	2
25 mm (0.98 in): Days with 25 mm or more rain	99	7	1889	1
50 mm (1.97 in): Days with 50 mm or more rain	14	2	1889	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1941	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1884.

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Data for Greenock 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).

Greenock Threshold Days by Year (ASN00023305)

Key Facts for Greenock Thresholds

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

Every Fixed Threshold

Download the Data

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