Ardrossan Threshold Days by Year (ASN00022000)

4 fixed thresholds counted per year at Ardrossan (ASN00022000): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ardrossan Thresholds

Ardrossan: days with 10 mm (0.39 in) or more of precipitation in 103 years, most in 1921 with 16.
Ardrossan: days with 25 mm (0.98 in) or more of precipitation in 64 years, most in 1921 with 5.
Ardrossan: days with 50 mm (1.97 in) or more of precipitation in 9 years, most in 1997 with 2.
Ardrossan: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1946 with 1.
4 fixed thresholds have at least one qualifying day at Ardrossan.

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

103 years with a qualifying day

Days per year at Ardrossan with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 16 in 1921.

Days with 10 mm (0.39 in) or more of precipitation per year at Ardrossan
Year	Days	Decade average
1884	12	9.8
1887	10	9.8
1888	5	9.8
1889	12	9.8
1890	12	8.5
1891	6	8.5
1892	11	8.5
1893	11	8.5
1894	11	8.5
1895	6	8.5
1896	4	8.5
1897	4	8.5
1898	14	8.5
1899	6	8.5
1900	9	10.1
1901	10	10.1
1902	3	10.1
1903	10	10.1
1904	14	10.1
1905	13	10.1
1906	9	10.1
1907	8	10.1
1908	13	10.1
1909	12	10.1
1910	9	8.1
1911	7	8.1
1912	9	8.1
1913	8	8.1
1914	3	8.1
1915	10	8.1
1916	13	8.1
1917	9	8.1
1918	6	8.1
1919	7	8.1
1920	10	8
1921	16	8
1922	10	8
1923	7	8
1924	6	8
1925	5	8
1926	6	8
1927	5	8
1928	8	8
1929	7	8
1930	9	8.5
1931	6	8.5
1932	12	8.5
1933	9	8.5
1934	7	8.5
1935	9	8.5
1936	3	8.5
1937	12	8.5
1938	9	8.5
1939	9	8.5
1940	2	6.7
1941	11	6.7
1942	13	6.7
1943	4	6.7
1944	6	6.7
1945	4	6.7
1946	6	6.7
1947	8	6.7
1948	5	6.7
1949	8	6.7
1950	9	7
1951	5	7
1952	6	7
1953	9	7
1954	6	7
1955	11	7
1956	6	7
1957	5	7
1958	11	7
1959	2	7
1960	13	7.6
1961	10	7.6
1962	7	7.6
1963	8	7.6
1964	8	7.6
1965	2	7.6
1966	5	7.6
1967	5	7.6
1968	12	7.6
1969	6	7.6
1970	7	6.6
1971	10	6.6
1972	3	6.6
1973	11	6.6
1977	2	6.6
1980	4	4
1997	8	6.5
1999	5	6.5
2000	5	4.7
2002	1	4.7
2003	7	4.7
2005	7	4.7
2006	4	4.7
2007	6	4.7
2008	3	4.7
2015	7	7.3
2016	14	7.3
2018	4	7.3
2019	4	7.3

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

First to last qualifying date each year at Ardrossan
Year	First date	Last date
1884	1884-04-24	1884-12-15
1887	1887-04-11	1887-12-13
1888	1888-05-03	1888-07-13
1889	1889-01-02	1889-11-15
1890	1890-01-27	1890-11-08
1891	1891-03-30	1891-10-03
1892	1892-01-23	1892-10-26
1893	1893-04-01	1893-10-14
1894	1894-01-13	1894-12-23
1895	1895-01-04	1895-07-20
1896	1896-01-18	1896-12-28
1897	1897-01-09	1897-07-10
1898	1898-04-04	1898-11-29
1899	1899-04-03	1899-11-06
1900	1900-03-01	1900-11-17
1901	1901-04-03	1901-12-21
1902	1902-03-26	1902-12-17
1903	1903-02-01	1903-12-11
1904	1904-01-02	1904-10-19
1905	1905-01-03	1905-10-28
1906	1906-03-26	1906-11-19
1907	1907-03-05	1907-11-04
1908	1908-01-31	1908-10-16
1909	1909-05-06	1909-11-09
1910	1910-03-05	1910-12-23
1911	1911-02-01	1911-12-05
1912	1912-03-09	1912-11-18
1913	1913-03-04	1913-12-23
1914	1914-03-13	1914-11-25
1915	1915-03-29	1915-09-19
1916	1916-05-30	1916-11-25
1917	1917-02-14	1917-09-12
1918	1918-02-18	1918-10-07
1919	1919-02-17	1919-12-24
1920	1920-06-01	1920-12-27
1921	1921-01-02	1921-11-05
1922	1922-06-04	1922-12-26
1923	1923-01-05	1923-09-21
1924	1924-02-19	1924-11-07
1925	1925-04-04	1925-09-18
1926	1926-04-24	1926-09-26
1927	1927-03-22	1927-11-01
1928	1928-02-01	1928-09-30
1929	1929-05-07	1929-12-28
1930	1930-02-21	1930-10-24
1931	1931-05-11	1931-09-03
1932	1932-02-05	1932-10-22
1933	1933-03-04	1933-09-17
1934	1934-09-05	1934-11-08
1935	1935-03-21	1935-12-24
1936	1936-02-18	1936-10-18
1937	1937-01-19	1937-12-27
1938	1938-02-20	1938-11-01
1939	1939-01-16	1939-11-03
1940	1940-07-13	1940-11-09
1941	1941-01-24	1941-11-19
1942	1942-01-20	1942-11-04
1943	1943-02-17	1943-10-16
1944	1944-04-02	1944-11-07
1945	1945-02-16	1945-12-17
1946	1946-01-17	1946-12-25
1947	1947-03-12	1947-10-20
1948	1948-04-11	1948-12-25
1949	1949-02-20	1949-11-21
1950	1950-02-01	1950-10-25
1951	1951-02-22	1951-10-24
1952	1952-01-25	1952-11-27
1953	1953-02-05	1953-12-07
1954	1954-01-27	1954-06-29
1955	1955-02-08	1955-11-17
1956	1956-04-19	1956-10-18
1957	1957-06-21	1957-12-30
1958	1958-04-14	1958-10-10
1959	1959-03-31	1959-11-28
1960	1960-01-18	1960-11-12
1961	1961-04-07	1961-11-17
1962	1962-02-20	1962-10-19
1963	1963-04-26	1963-08-15
1964	1964-04-07	1964-11-18
1965	1965-05-08	1965-06-22
1966	1966-01-12	1966-12-02
1967	1967-02-23	1967-10-02
1968	1968-03-29	1968-12-23
1969	1969-02-09	1969-12-01
1970	1970-01-01	1970-12-05
1971	1971-03-15	1971-12-10
1972	1972-02-17	1972-12-26
1973	1973-01-30	1973-10-18
1977	1977-11-01	1977-11-29
1980	1980-05-31	1980-10-14
1997	1997-01-22	1997-12-18
1999	1999-07-05	1999-12-03
2000	2000-02-22	2000-10-18
2002	2002-11-26	2002-11-26
2003	2003-02-20	2003-10-01
2005	2005-01-27	2005-12-02
2006	2006-01-02	2006-12-22
2007	2007-03-20	2007-12-22
2008	2008-05-17	2008-12-12
2015	2015-04-17	2015-11-04
2016	2016-02-01	2016-12-28
2018	2018-06-18	2018-11-22
2019	2019-06-12	2019-11-04

Every Fixed Threshold

Fixed thresholds at Ardrossan
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	103	16	1921	4
25 mm (0.98 in): Days with 25 mm or more rain	64	5	1921	4
50 mm (1.97 in): Days with 50 mm or more rain	9	2	1997	2
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1946	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.

Download the Data

Data for Ardrossan 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).

Ardrossan Threshold Days by Year (ASN00022000)

Key Facts for Ardrossan Thresholds

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

Every Fixed Threshold

Download the Data

Related