Glen Royal Threshold Days by Year

4 fixed thresholds counted per year at Glen Royal (ASN00041504): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Glen Royal Thresholds

Glen Royal: days with 10 mm (0.39 in) or more of precipitation in 93 years, most in 1983 with 38.
Glen Royal: days with 25 mm (0.98 in) or more of precipitation in 93 years, most in 2010 with 15.
Glen Royal: days with 50 mm (1.97 in) or more of precipitation in 75 years, most in 1983 with 6.
Glen Royal: days with 100 mm (3.94 in) or more of precipitation in 9 years, most in 1963 with 2.
4 fixed thresholds have at least one qualifying day at Glen Royal.

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

93 years with a qualifying day

Days per year at Glen Royal with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 38 in 1983.

Days with 10 mm (0.39 in) or more of precipitation per year at Glen Royal
Year	Days	Decade average
1928	21	20.5
1929	20	20.5
1930	21	23.3
1931	31	23.3
1932	16	23.3
1933	25	23.3
1934	27	23.3
1935	21	23.3
1936	17	23.3
1937	28	23.3
1938	25	23.3
1939	22	23.3
1940	20	18.5
1941	12	18.5
1942	22	18.5
1943	23	18.5
1944	17	18.5
1945	23	18.5
1946	16	18.5
1947	19	18.5
1948	18	18.5
1949	15	18.5
1950	17	21.4
1951	12	21.4
1952	27	21.4
1953	16	21.4
1954	24	21.4
1955	23	21.4
1956	23	21.4
1958	30	21.4
1959	21	21.4
1960	22	21.3
1961	21	21.3
1962	25	21.3
1963	19	21.3
1964	30	21.3
1965	22	21.3
1966	16	21.3
1967	19	21.3
1968	17	21.3
1969	22	21.3
1970	22	23.9
1971	29	23.9
1972	24	23.9
1976	17	23.9
1977	20	23.9
1978	36	23.9
1979	19	23.9
1980	15	24
1981	28	24
1982	16	24
1983	38	24
1984	27	24
1985	27	24
1986	19	24
1987	21	24
1988	25	24
1989	24	24
1990	21	22
1991	14	22
1992	18	22
1993	16	22
1994	15	22
1995	36	22
1996	31	22
1997	15	22
1998	26	22
1999	28	22
2000	10	17.9
2001	28	17.9
2002	13	17.9
2003	23	17.9
2004	23	17.9
2005	17	17.9
2006	15	17.9
2007	19	17.9
2008	17	17.9
2009	14	17.9
2010	25	18.1
2012	19	18.1
2013	19	18.1
2014	23	18.1
2015	25	18.1
2016	19	18.1
2017	12	18.1
2018	15	18.1
2019	6	18.1
2020	16	21
2021	28	21
2022	31	21
2023	8	21
2024	26	21
2025	17	21

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

First to last qualifying date each year at Glen Royal
Year	First date	Last date
1928	1928-01-24	1928-12-30
1929	1929-01-20	1929-12-06
1930	1930-02-16	1930-12-17
1931	1931-01-10	1931-12-11
1932	1932-02-13	1932-12-21
1933	1933-01-15	1933-12-22
1934	1934-01-01	1934-12-30
1935	1935-01-05	1935-12-14
1936	1936-01-09	1936-12-27
1937	1937-01-02	1937-12-29
1938	1938-01-04	1938-12-31
1939	1939-01-20	1939-12-27
1940	1940-01-16	1940-12-29
1941	1941-01-10	1941-11-21
1942	1942-01-10	1942-12-28
1943	1943-01-14	1943-12-29
1944	1944-01-12	1944-12-22
1945	1945-01-14	1945-12-12
1946	1946-01-06	1946-12-14
1947	1947-01-24	1947-12-25
1948	1948-01-02	1948-12-31
1949	1949-01-10	1949-12-30
1950	1950-01-18	1950-11-25
1951	1951-01-16	1951-12-19
1952	1952-01-06	1952-11-28
1953	1953-01-08	1953-12-25
1954	1954-01-05	1954-12-11
1955	1955-01-08	1955-12-18
1956	1956-01-15	1956-12-22
1958	1958-01-20	1958-12-28
1959	1959-01-03	1959-12-26
1960	1960-01-21	1960-12-06
1961	1961-02-11	1961-12-20
1962	1962-01-01	1962-12-31
1963	1963-01-11	1963-12-14
1964	1964-01-15	1964-12-28
1965	1965-01-10	1965-12-15
1966	1966-01-23	1966-12-31
1967	1967-01-06	1967-12-28
1968	1968-01-05	1968-12-22
1969	1969-01-02	1969-12-31
1970	1970-01-06	1970-12-31
1971	1971-01-02	1971-12-28
1972	1972-01-03	1972-12-29
1976	1976-01-11	1976-11-01
1977	1977-01-12	1977-11-21
1978	1978-01-19	1978-12-30
1979	1979-01-31	1979-12-16
1980	1980-01-27	1980-12-30
1981	1981-01-01	1981-12-25
1982	1982-01-19	1982-12-30
1983	1983-01-03	1983-12-15
1984	1984-01-28	1984-12-30
1985	1985-01-01	1985-12-22
1986	1986-01-11	1986-12-30
1987	1987-01-04	1987-12-12
1988	1988-01-16	1988-12-18
1989	1989-01-07	1989-12-25
1990	1990-01-13	1990-12-24
1991	1991-01-06	1991-12-13
1992	1992-01-01	1992-12-10
1993	1993-01-07	1993-12-23
1994	1994-01-20	1994-12-02
1995	1995-01-07	1995-12-28
1996	1996-01-02	1996-12-31
1997	1997-02-03	1997-12-10
1998	1998-01-22	1998-12-21
1999	1999-01-02	1999-12-28
2000	2000-01-09	2000-12-29
2001	2001-01-29	2001-12-31
2002	2002-02-06	2002-12-26
2003	2003-01-02	2003-12-16
2004	2004-01-08	2004-12-28
2005	2005-01-18	2005-12-17
2006	2006-01-04	2006-12-17
2007	2007-01-13	2007-12-18
2008	2008-02-27	2008-12-30
2009	2009-01-23	2009-12-30
2010	2010-01-29	2010-12-28
2012	2012-01-15	2012-12-26
2013	2013-01-11	2013-12-17
2014	2014-03-19	2014-12-30
2015	2015-01-15	2015-12-24
2016	2016-01-06	2016-12-21
2017	2017-01-03	2017-12-27
2018	2018-02-03	2018-12-22
2019	2019-03-16	2019-08-02
2020	2020-01-17	2020-12-21
2021	2021-01-07	2021-12-23
2022	2022-01-19	2022-12-13
2023	2023-01-25	2023-12-26
2024	2024-01-18	2024-12-31
2025	2025-01-11	2025-12-23

Every Fixed Threshold

Fixed thresholds at Glen Royal
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	93	38	1983	17
25 mm (0.98 in): Days with 25 mm or more rain	93	15	2010	4
50 mm (1.97 in): Days with 50 mm or more rain	75	6	1983	1
100 mm (3.94 in): Days with 100 mm or more rain	9	2	1963	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1928.

Download the Data

Data for Glen Royal 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

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

Glen Royal Threshold Days by Year

Key Facts for Glen Royal Thresholds

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

Every Fixed Threshold

Download the Data

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