Boonara Threshold Days by Year (ASN00040025)

5 fixed thresholds counted per year at Boonara (ASN00040025): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Boonara Thresholds

Boonara: days with 10 mm (0.39 in) or more of precipitation in 76 years, most in 1974 with 48.
Boonara: days with 25 mm (0.98 in) or more of precipitation in 76 years, most in 1974 with 32.
Boonara: days with 50 mm (1.97 in) or more of precipitation in 60 years, most in 1975 with 20.
Boonara: days with 100 mm (3.94 in) or more of precipitation in 19 years, most in 1975 with 5.
5 fixed thresholds have at least one qualifying day at Boonara.

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

76 years with a qualifying day

Days per year at Boonara with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 48 in 1974.

Days with 10 mm (0.39 in) or more of precipitation per year at Boonara
Year	Days	Decade average
1894	26	26.2
1895	24	26.2
1896	24	26.2
1897	27	26.2
1898	34	26.2
1899	22	26.2
1900	18	25.8
1901	24	25.8
1904	28	25.8
1905	22	25.8
1906	39	25.8
1909	24	25.8
1910	26	24.8
1911	18	24.8
1912	26	24.8
1913	28	24.8
1914	24	24.8
1915	24	24.8
1916	33	24.8
1917	28	24.8
1918	25	24.8
1919	16	24.8
1920	31	26.1
1921	34	26.1
1922	15	26.1
1923	23	26.1
1924	33	26.1
1925	27	26.1
1926	18	26.1
1927	36	26.1
1928	27	26.1
1929	17	26.1
1930	33	25.5
1931	29	25.5
1932	18	25.5
1933	33	25.5
1934	33	25.5
1935	22	25.5
1936	17	25.5
1937	21	25.5
1938	28	25.5
1939	21	25.5
1940	21	20.6
1941	16	20.6
1942	23	20.6
1943	24	20.6
1944	15	20.6
1945	15	20.6
1946	17	20.6
1947	31	20.6
1948	22	20.6
1949	22	20.6
1950	29	22.5
1951	11	22.5
1952	19	22.5
1953	25	22.5
1954	27	22.5
1955	29	22.5
1956	32	22.5
1957	9	22.5
1958	17	22.5
1959	27	22.5
1960	20	21.8
1961	24	21.8
1962	25	21.8
1963	16	21.8
1964	24	21.8
1971	29	29.7
1972	19	29.7
1973	23	29.7
1974	48	29.7
1975	46	29.7
1976	25	29.7
1977	18	29.7
1978	31	29.7
1979	28	29.7

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

First to last qualifying date each year at Boonara
Year	First date	Last date
1894	1894-01-23	1894-12-31
1895	1895-01-01	1895-12-30
1896	1896-01-29	1896-12-19
1897	1897-01-05	1897-12-30
1898	1898-01-02	1898-12-31
1899	1899-01-04	1899-12-28
1900	1900-01-10	1900-12-02
1901	1901-01-03	1901-11-06
1904	1904-01-03	1904-12-18
1905	1905-01-05	1905-12-29
1906	1906-01-01	1906-12-28
1909	1909-01-17	1909-12-29
1910	1910-01-12	1910-12-18
1911	1911-01-11	1911-11-16
1912	1912-01-06	1912-12-11
1913	1913-01-06	1913-12-27
1914	1914-01-11	1914-12-30
1915	1915-01-04	1915-12-28
1916	1916-01-31	1916-12-14
1917	1917-01-13	1917-12-13
1918	1918-01-11	1918-12-19
1919	1919-01-15	1919-10-28
1920	1920-01-02	1920-12-27
1921	1921-01-14	1921-12-30
1922	1922-01-01	1922-12-16
1923	1923-01-03	1923-12-21
1924	1924-01-07	1924-12-31
1925	1925-01-02	1925-12-31
1926	1926-01-06	1926-12-31
1927	1927-01-21	1927-12-28
1928	1928-01-06	1928-12-20
1929	1929-01-12	1929-12-31
1930	1930-01-01	1930-12-17
1931	1931-01-07	1931-12-12
1932	1932-02-24	1932-12-23
1933	1933-01-06	1933-12-29
1934	1934-01-07	1934-12-24
1935	1935-01-06	1935-12-27
1936	1936-01-10	1936-12-16
1937	1937-01-04	1937-12-29
1938	1938-01-04	1938-11-28
1939	1939-01-24	1939-12-25
1940	1940-01-10	1940-12-03
1941	1941-01-10	1941-12-30
1942	1942-01-17	1942-12-30
1943	1943-01-15	1943-12-31
1944	1944-01-10	1944-12-13
1945	1945-01-15	1945-11-20
1946	1946-01-07	1946-12-31
1947	1947-01-12	1947-12-21
1948	1948-01-03	1948-12-31
1949	1949-02-04	1949-12-17
1950	1950-01-18	1950-12-02
1951	1951-01-07	1951-12-14
1952	1952-01-09	1952-11-09
1953	1953-01-01	1953-12-28
1954	1954-01-03	1954-12-18
1955	1955-01-10	1955-12-25
1956	1956-01-05	1956-12-23
1957	1957-01-08	1957-11-03
1958	1958-01-22	1958-12-19
1959	1959-01-02	1959-12-24
1960	1960-01-17	1960-12-16
1961	1961-01-04	1961-12-16
1962	1962-01-06	1962-12-31
1963	1963-01-01	1963-12-14
1964	1964-01-03	1964-12-26
1971	1971-01-01	1971-12-27
1972	1972-01-01	1972-12-10
1973	1973-01-08	1973-12-21
1974	1974-01-02	1974-12-30
1975	1975-01-03	1975-12-23
1976	1976-01-09	1976-12-31
1977	1977-01-06	1977-12-16
1978	1978-01-05	1978-12-18
1979	1979-01-19	1979-12-21

Every Fixed Threshold

Fixed thresholds at Boonara
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	76	48	1974	28
25 mm (0.98 in): Days with 25 mm or more rain	76	32	1974	9
50 mm (1.97 in): Days with 50 mm or more rain	60	20	1975	4
100 mm (3.94 in): Days with 100 mm or more rain	19	5	1975	5
200 mm (7.87 in): Days with 200 mm or more rain	3	1	1929	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1894.

Download the Data

Data for Boonara 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).

Boonara Threshold Days by Year (ASN00040025)

Key Facts for Boonara Thresholds

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

Every Fixed Threshold

Download the Data

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