Glendower Station Threshold Days by Year

4 fixed thresholds counted per year at Glendower Station (ASN00030021): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Glendower Station Thresholds

Glendower Station: days with 10 mm (0.39 in) or more of precipitation in 99 years, most in 1950 with 33.
Glendower Station: days with 25 mm (0.98 in) or more of precipitation in 99 years, most in 1950 with 17.
Glendower Station: days with 50 mm (1.97 in) or more of precipitation in 76 years, most in 1981 with 6.
Glendower Station: days with 100 mm (3.94 in) or more of precipitation in 14 years, most in 1979 with 2.
4 fixed thresholds have at least one qualifying day at Glendower Station.

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

99 years with a qualifying day

Days per year at Glendower Station with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 33 in 1950.

Days with 10 mm (0.39 in) or more of precipitation per year at Glendower Station
Year	Days	Decade average
1890	26	20
1893	14	20
1900	8	8
1925	13	10.2
1926	4	10.2
1927	17	10.2
1928	7	10.2
1929	10	10.2
1930	16	12.2
1931	5	12.2
1932	8	12.2
1933	20	12.2
1934	9	12.2
1935	13	12.2
1936	12	12.2
1937	13	12.2
1938	10	12.2
1939	16	12.2
1940	10	12.8
1941	20	12.8
1942	20	12.8
1943	10	12.8
1944	14	12.8
1945	6	12.8
1946	14	12.8
1947	16	12.8
1948	8	12.8
1949	10	12.8
1950	33	16.8
1951	6	16.8
1952	7	16.8
1953	4	16.8
1954	28	16.8
1955	27	16.8
1956	28	16.8
1957	13	16.8
1958	15	16.8
1959	7	16.8
1960	11	12.4
1961	10	12.4
1962	20	12.4
1963	15	12.4
1964	15	12.4
1965	10	12.4
1966	8	12.4
1967	9	12.4
1968	14	12.4
1971	24	18.1
1972	11	18.1
1973	21	18.1
1974	25	18.1
1975	19	18.1
1976	19	18.1
1977	12	18.1
1978	17	18.1
1979	15	18.1
1980	18	14.5
1981	25	14.5
1982	9	14.5
1983	13	14.5
1984	22	14.5
1985	16	14.5
1986	9	14.5
1987	8	14.5
1988	6	14.5
1989	19	14.5
1990	13	11.4
1991	14	11.4
1992	5	11.4
1993	8	11.4
1994	6	11.4
1995	13	11.4
1996	8	11.4
1997	15	11.4
1998	15	11.4
1999	17	11.4
2000	25	15.3
2001	10	15.3
2002	10	15.3
2003	11	15.3
2004	9	15.3
2005	12	15.3
2006	18	15.3
2007	16	15.3
2008	23	15.3
2009	19	15.3
2010	32	14.6
2012	17	14.6
2013	6	14.6
2014	15	14.6
2016	15	14.6
2017	10	14.6
2018	9	14.6
2019	13	14.6
2020	16	17.6
2021	16	17.6
2022	21	17.6
2024	10	17.6
2025	25	17.6

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

First to last qualifying date each year at Glendower Station
Year	First date	Last date
1890	1890-01-05	1890-12-24
1893	1893-01-10	1893-12-21
1900	1900-01-11	1900-07-04
1925	1925-01-20	1925-11-18
1926	1926-01-24	1926-09-25
1927	1927-01-23	1927-12-23
1928	1928-01-09	1928-12-12
1929	1929-01-03	1929-12-29
1930	1930-01-16	1930-12-17
1931	1931-10-23	1931-12-25
1932	1932-01-12	1932-12-24
1933	1933-01-23	1933-12-30
1934	1934-01-08	1934-11-10
1935	1935-01-05	1935-12-04
1936	1936-01-06	1936-12-31
1937	1937-01-02	1937-12-13
1938	1938-01-11	1938-12-04
1939	1939-01-16	1939-12-29
1940	1940-01-22	1940-11-27
1941	1941-01-04	1941-12-02
1942	1942-02-05	1942-12-29
1943	1943-01-14	1943-12-20
1944	1944-02-03	1944-12-19
1945	1945-01-06	1945-11-20
1946	1946-01-10	1946-12-29
1947	1947-02-06	1947-12-24
1948	1948-02-01	1948-12-31
1949	1949-01-28	1949-12-21
1950	1950-01-02	1950-12-19
1951	1951-02-03	1951-12-30
1952	1952-01-10	1952-12-28
1953	1953-02-10	1953-08-28
1954	1954-01-01	1954-12-17
1955	1955-01-05	1955-12-18
1956	1956-01-13	1956-12-25
1957	1957-01-09	1957-12-31
1958	1958-01-02	1958-12-29
1959	1959-01-11	1959-12-26
1960	1960-01-21	1960-12-27
1961	1961-01-02	1961-12-16
1962	1962-01-04	1962-12-30
1963	1963-01-16	1963-12-31
1964	1964-01-02	1964-12-06
1965	1965-01-24	1965-12-14
1966	1966-01-04	1966-11-15
1967	1967-02-02	1967-12-31
1968	1968-01-04	1968-05-15
1971	1971-01-25	1971-12-27
1972	1972-01-11	1972-12-09
1973	1973-01-10	1973-12-27
1974	1974-01-01	1974-12-29
1975	1975-01-03	1975-12-25
1976	1976-01-11	1976-12-21
1977	1977-01-18	1977-12-22
1978	1978-01-04	1978-12-26
1979	1979-01-28	1979-12-27
1980	1980-01-06	1980-12-22
1981	1981-01-03	1981-12-14
1982	1982-01-06	1982-05-01
1983	1983-01-02	1983-12-07
1984	1984-01-05	1984-12-21
1985	1985-01-22	1985-12-23
1986	1986-02-03	1986-12-07
1987	1987-01-01	1987-12-02
1988	1988-02-13	1988-12-10
1989	1989-01-04	1989-11-27
1990	1990-02-01	1990-12-10
1991	1991-01-04	1991-02-07
1992	1992-11-15	1992-12-19
1993	1993-01-05	1993-12-23
1994	1994-01-23	1994-03-05
1995	1995-01-20	1995-12-31
1996	1996-01-01	1996-10-13
1997	1997-01-29	1997-12-30
1998	1998-01-11	1998-12-09
1999	1999-01-03	1999-12-24
2000	2000-01-06	2000-12-29
2001	2001-01-24	2001-12-16
2002	2002-01-04	2002-08-19
2003	2003-02-02	2003-12-29
2004	2004-01-11	2004-12-27
2005	2005-01-05	2005-12-02
2006	2006-01-10	2006-12-07
2007	2007-01-13	2007-12-26
2008	2008-01-12	2008-12-30
2009	2009-01-03	2009-12-31
2010	2010-01-01	2010-12-31
2012	2012-01-14	2012-11-11
2013	2013-01-16	2013-11-29
2014	2014-01-07	2014-12-19
2016	2016-01-03	2016-12-10
2017	2017-01-02	2017-12-03
2018	2018-02-05	2018-12-13
2019	2019-01-30	2019-06-08
2020	2020-01-23	2020-12-30
2021	2021-02-04	2021-12-29
2022	2022-02-03	2022-12-24
2024	2024-01-09	2024-12-20
2025	2025-01-21	2025-12-29

Every Fixed Threshold

Fixed thresholds at Glendower Station
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	99	33	1950	25
25 mm (0.98 in): Days with 25 mm or more rain	99	17	1950	10
50 mm (1.97 in): Days with 50 mm or more rain	76	6	1981	4
100 mm (3.94 in): Days with 100 mm or more rain	14	2	1979	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1890.

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Data for Glendower Station 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 2026-10-13 (13 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Glendower Station Threshold Days by Year

Key Facts for Glendower Station Thresholds

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

Every Fixed Threshold

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