Glenroy Threshold Days by Year

4 fixed thresholds counted per year at Glenroy (ASN00041277): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Glenroy Thresholds

Glenroy: days with 10 mm (0.39 in) or more of precipitation in 68 years, most in 1978 with 33.
Glenroy: days with 25 mm (0.98 in) or more of precipitation in 68 years, most in 2010 with 13.
Glenroy: days with 50 mm (1.97 in) or more of precipitation in 52 years, most in 2010 with 5.
Glenroy: days with 100 mm (3.94 in) or more of precipitation in 3 years, most in 1996 with 1.
4 fixed thresholds have at least one qualifying day at Glenroy.

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

68 years with a qualifying day

Days per year at Glenroy with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 33 in 1978.

Days with 10 mm (0.39 in) or more of precipitation per year at Glenroy
Year	Days	Decade average
1959	25	25
1960	25	19.3
1961	17	19.3
1962	26	19.3
1963	16	19.3
1964	21	19.3
1965	15	19.3
1966	16	19.3
1967	21	19.3
1968	20	19.3
1969	16	19.3
1970	19	22.1
1971	23	22.1
1972	20	22.1
1973	20	22.1
1974	22	22.1
1975	20	22.1
1976	29	22.1
1977	16	22.1
1978	33	22.1
1979	19	22.1
1980	19	21.3
1981	21	21.3
1982	15	21.3
1983	31	21.3
1984	25	21.3
1985	19	21.3
1986	12	21.3
1987	20	21.3
1988	22	21.3
1989	29	21.3
1990	17	20.2
1991	19	20.2
1992	21	20.2
1993	13	20.2
1994	14	20.2
1995	23	20.2
1996	23	20.2
1997	22	20.2
1998	26	20.2
1999	24	20.2
2000	14	16.6
2001	15	16.6
2002	15	16.6
2003	17	16.6
2004	20	16.6
2005	15	16.6
2006	10	16.6
2007	22	16.6
2008	20	16.6
2009	18	16.6
2010	30	19.4
2011	25	19.4
2012	20	19.4
2013	18	19.4
2014	18	19.4
2015	22	19.4
2016	21	19.4
2017	18	19.4
2018	14	19.4
2019	8	19.4
2020	13	19
2021	28	19
2022	27	19
2023	14	19
2024	22	19
2025	23	19
2026	6	19

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

First to last qualifying date each year at Glenroy
Year	First date	Last date
1959	1959-01-03	1959-12-23
1960	1960-01-06	1960-12-16
1961	1961-02-11	1961-12-15
1962	1962-01-04	1962-12-31
1963	1963-02-04	1963-12-11
1964	1964-02-09	1964-12-30
1965	1965-01-08	1965-12-15
1966	1966-01-23	1966-12-30
1967	1967-01-05	1967-12-25
1968	1968-01-06	1968-12-25
1969	1969-01-01	1969-12-24
1970	1970-01-02	1970-12-27
1971	1971-01-08	1971-12-28
1972	1972-01-04	1972-12-29
1973	1973-01-06	1973-12-20
1974	1974-01-01	1974-12-29
1975	1975-01-09	1975-12-22
1976	1976-01-14	1976-12-24
1977	1977-01-12	1977-11-27
1978	1978-01-12	1978-12-13
1979	1979-02-17	1979-12-24
1980	1980-01-27	1980-12-30
1981	1981-02-06	1981-12-25
1982	1982-01-16	1982-12-04
1983	1983-01-01	1983-12-05
1984	1984-01-03	1984-12-30
1985	1985-01-25	1985-12-23
1986	1986-02-11	1986-12-19
1987	1987-01-05	1987-12-25
1988	1988-01-05	1988-12-27
1989	1989-01-03	1989-12-23
1990	1990-01-16	1990-12-25
1991	1991-01-06	1991-12-22
1992	1992-01-01	1992-11-26
1993	1993-01-05	1993-12-23
1994	1994-02-03	1994-12-26
1995	1995-01-08	1995-12-24
1996	1996-01-03	1996-12-19
1997	1997-01-02	1997-12-21
1998	1998-01-26	1998-12-30
1999	1999-01-11	1999-12-27
2000	2000-01-03	2000-12-29
2001	2001-01-09	2001-12-07
2002	2002-01-01	2002-12-27
2003	2003-02-05	2003-12-07
2004	2004-01-11	2004-12-28
2005	2005-06-12	2005-12-09
2006	2006-01-05	2006-12-16
2007	2007-01-10	2007-12-23
2008	2008-01-12	2008-12-28
2009	2009-01-23	2009-12-29
2010	2010-01-04	2010-12-28
2011	2011-01-07	2011-12-12
2012	2012-01-15	2012-12-26
2013	2013-01-11	2013-12-12
2014	2014-01-22	2014-12-19
2015	2015-01-15	2015-12-28
2016	2016-01-05	2016-12-24
2017	2017-01-03	2017-12-27
2018	2018-02-03	2018-12-17
2019	2019-03-15	2019-12-26
2020	2020-01-17	2020-12-19
2021	2021-01-06	2021-12-26
2022	2022-01-02	2022-12-02
2023	2023-01-25	2023-12-26
2024	2024-01-19	2024-12-31
2025	2025-01-02	2025-12-25
2026	2026-01-19	2026-05-28

Every Fixed Threshold

Fixed thresholds at Glenroy
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	68	33	1978	6
25 mm (0.98 in): Days with 25 mm or more rain	68	13	2010	3
50 mm (1.97 in): Days with 50 mm or more rain	52	5	2010	1
100 mm (3.94 in): Days with 100 mm or more rain	3	1	1996	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1959.

Download the Data

Data for Glenroy 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 2026-10-14 (14 October 2026). Threshold counts are computed by this site.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Glenroy Threshold Days by Year

Key Facts for Glenroy Thresholds

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

Every Fixed Threshold

Download the Data

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