Corona Downs Threshold Days by Year

5 fixed thresholds counted per year at Corona Downs (ASN00037015): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Corona Downs Thresholds

Corona Downs: days with 10 mm (0.39 in) or more of precipitation in 91 years, most in 1950 with 37.
Corona Downs: days with 25 mm (0.98 in) or more of precipitation in 87 years, most in 1950 with 13.
Corona Downs: days with 50 mm (1.97 in) or more of precipitation in 61 years, most in 1950 with 8.
Corona Downs: days with 100 mm (3.94 in) or more of precipitation in 19 years, most in 1918 with 2.
5 fixed thresholds have at least one qualifying day at Corona Downs.

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

91 years with a qualifying day

Days per year at Corona Downs with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 37 in 1950.

Days with 10 mm (0.39 in) or more of precipitation per year at Corona Downs
Year	Days	Decade average
1900	5	5
1913	16	14.3
1914	9	14.3
1915	7	14.3
1916	21	14.3
1917	16	14.3
1918	19	14.3
1919	12	14.3
1920	17	10.3
1921	16	10.3
1922	9	10.3
1923	7	10.3
1924	20	10.3
1925	7	10.3
1926	6	10.3
1927	5	10.3
1928	8	10.3
1929	8	10.3
1930	20	10.8
1931	10	10.8
1932	8	10.8
1933	9	10.8
1934	8	10.8
1935	6	10.8
1936	13	10.8
1937	9	10.8
1938	10	10.8
1939	15	10.8
1940	11	9.8
1941	23	9.8
1942	4	9.8
1943	7	9.8
1944	8	9.8
1945	9	9.8
1946	5	9.8
1947	9	9.8
1948	6	9.8
1949	16	9.8
1950	37	14.7
1951	10	14.7
1952	9	14.7
1953	7	14.7
1954	13	14.7
1955	19	14.7
1956	20	14.7
1957	9	14.7
1958	8	14.7
1960	9	7.9
1961	6	7.9
1963	10	7.9
1964	8	7.9
1965	6	7.9
1966	8	7.9
1967	6	7.9
1968	13	7.9
1969	5	7.9
1970	12	15.5
1971	19	15.5
1972	5	15.5
1973	22	15.5
1974	24	15.5
1975	11	15.5
1976	14	15.5
1977	17	15.5
1982	8	10.8
1983	6	10.8
1984	11	10.8
1985	11	10.8
1986	10	10.8
1987	13	10.8
1988	8	10.8
1989	19	10.8
1990	16	13
1991	14	13
1992	10	13
1994	8	13
1995	8	13
1996	12	13
1997	14	13
1998	13	13
1999	22	13
2000	26	15.5
2003	9	15.5
2004	16	15.5
2005	11	15.5
2016	19	10.3
2017	10	10.3
2018	5	10.3
2019	7	10.3
2020	9	10
2021	11	10

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

First to last qualifying date each year at Corona Downs
Year	First date	Last date
1900	1900-01-20	1900-07-03
1913	1913-01-06	1913-12-27
1914	1914-01-15	1914-12-23
1915	1915-05-13	1915-12-29
1916	1916-01-27	1916-12-31
1917	1917-01-01	1917-11-14
1918	1918-01-02	1918-12-20
1919	1919-01-12	1919-12-07
1920	1920-01-19	1920-12-07
1921	1921-01-05	1921-12-31
1922	1922-01-31	1922-12-20
1923	1923-02-12	1923-12-26
1924	1924-01-05	1924-12-14
1925	1925-01-29	1925-11-13
1926	1926-01-12	1926-12-18
1927	1927-01-22	1927-12-23
1928	1928-02-18	1928-12-24
1929	1929-03-27	1929-12-30
1930	1930-01-16	1930-12-08
1931	1931-01-15	1931-12-06
1932	1932-02-10	1932-11-23
1933	1933-02-12	1933-12-03
1934	1934-01-30	1934-10-11
1935	1935-02-23	1935-10-23
1936	1936-01-05	1936-09-03
1937	1937-01-29	1937-11-24
1938	1938-01-14	1938-11-16
1939	1939-01-16	1939-12-20
1940	1940-02-03	1940-12-28
1941	1941-01-03	1941-12-02
1942	1942-02-18	1942-10-11
1943	1943-01-02	1943-12-18
1944	1944-02-03	1944-12-17
1945	1945-01-16	1945-10-20
1946	1946-01-10	1946-02-24
1947	1947-01-11	1947-09-06
1948	1948-01-01	1948-12-28
1949	1949-01-26	1949-12-19
1950	1950-01-09	1950-12-22
1951	1951-01-02	1951-06-13
1952	1952-01-13	1952-11-27
1953	1953-01-03	1953-12-31
1954	1954-01-14	1954-08-17
1955	1955-01-24	1955-10-08
1956	1956-01-08	1956-12-21
1957	1957-01-09	1957-12-31
1958	1958-02-23	1958-12-02
1960	1960-01-21	1960-12-26
1961	1961-02-17	1961-12-26
1963	1963-01-30	1963-10-26
1964	1964-01-13	1964-10-10
1965	1965-03-09	1965-12-18
1966	1966-01-04	1966-12-10
1967	1967-03-04	1967-06-07
1968	1968-02-10	1968-12-20
1969	1969-03-15	1969-12-23
1970	1970-02-02	1970-12-19
1971	1971-01-25	1971-12-25
1972	1972-01-12	1972-11-10
1973	1973-01-14	1973-12-29
1974	1974-01-01	1974-12-29
1975	1975-01-01	1975-12-29
1976	1976-01-20	1976-12-21
1977	1977-01-14	1977-12-21
1982	1982-01-04	1982-04-15
1983	1983-02-26	1983-06-17
1984	1984-01-07	1984-12-17
1985	1985-06-02	1985-12-22
1986	1986-01-10	1986-12-07
1987	1987-01-27	1987-12-28
1988	1988-03-15	1988-12-27
1989	1989-01-25	1989-11-28
1990	1990-02-20	1990-12-07
1991	1991-01-14	1991-06-22
1992	1992-02-04	1992-09-03
1994	1994-01-23	1994-11-30
1995	1995-01-18	1995-10-03
1996	1996-01-01	1996-12-19
1997	1997-01-14	1997-12-14
1998	1998-01-12	1998-12-31
1999	1999-01-01	1999-12-27
2000	2000-02-15	2000-12-28
2003	2003-02-09	2003-12-27
2004	2004-01-08	2004-12-13
2005	2005-01-06	2005-12-29
2016	2016-01-02	2016-12-16
2017	2017-01-20	2017-11-22
2018	2018-02-26	2018-12-15
2019	2019-01-30	2019-03-27
2020	2020-01-24	2020-12-28
2021	2021-01-07	2021-11-30

Every Fixed Threshold

Fixed thresholds at Corona Downs
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	91	37	1950	11
25 mm (0.98 in): Days with 25 mm or more rain	87	13	1950	3
50 mm (1.97 in): Days with 50 mm or more rain	61	8	1950	3
100 mm (3.94 in): Days with 100 mm or more rain	19	2	1918	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	1968	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1900.

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Data for Corona Downs 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).

Corona Downs Threshold Days by Year

Key Facts for Corona Downs Thresholds

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

Every Fixed Threshold

Download the Data

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