Blackwood Threshold Days by Year

4 fixed thresholds counted per year at Blackwood (ASN00087017): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Blackwood Thresholds

Blackwood: days with 10 mm (0.39 in) or more of precipitation in 126 years, most in 1952 with 53.
Blackwood: days with 25 mm (0.98 in) or more of precipitation in 124 years, most in 1954 with 15.
Blackwood: days with 50 mm (1.97 in) or more of precipitation in 77 years, most in 1906 with 5.
Blackwood: days with 100 mm (3.94 in) or more of precipitation in 12 years, most in 1919 with 2.
4 fixed thresholds have at least one qualifying day at Blackwood.

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

126 years with a qualifying day

Days per year at Blackwood with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 53 in 1952.

Days with 10 mm (0.39 in) or more of precipitation per year at Blackwood
Year	Days	Decade average
1879	26	26
1880	38	31.4
1881	32	31.4
1882	30	31.4
1883	36	31.4
1884	32	31.4
1885	33	31.4
1886	23	31.4
1888	21	31.4
1889	38	31.4
1890	25	28.2
1891	28	28.2
1892	27	28.2
1893	32	28.2
1894	31	28.2
1895	31	28.2
1896	25	28.2
1897	31	28.2
1898	25	28.2
1899	27	28.2
1900	33	26.1
1901	25	26.1
1902	21	26.1
1903	36	26.1
1904	21	26.1
1905	25	26.1
1906	32	26.1
1907	23	26.1
1908	17	26.1
1909	28	26.1
1910	33	30
1911	35	30
1912	23	30
1913	26	30
1914	19	30
1915	25	30
1916	39	30
1917	42	30
1918	33	30
1919	25	30
1920	25	29.3
1925	27	29.3
1928	30	29.3
1929	35	29.3
1930	39	39.5
1939	40	39.5
1940	18	28.8
1941	26	28.8
1942	33	28.8
1943	27	28.8
1944	26	28.8
1945	22	28.8
1946	32	28.8
1947	41	28.8
1948	33	28.8
1949	30	28.8
1950	35	35.9
1951	42	35.9
1952	53	35.9
1953	32	35.9
1954	35	35.9
1955	38	35.9
1956	41	35.9
1957	27	35.9
1958	33	35.9
1959	23	35.9
1960	43	30.6
1961	30	30.6
1962	31	30.6
1963	28	30.6
1964	38	30.6
1965	29	30.6
1966	32	30.6
1967	13	30.6
1968	38	30.6
1969	24	30.6
1970	33	34.3
1971	45	34.3
1972	25	34.3
1973	37	34.3
1974	41	34.3
1975	43	34.3
1976	32	34.3
1977	28	34.3
1978	33	34.3
1979	26	34.3
1980	27	32.7
1981	39	32.7
1982	16	32.7
1983	38	32.7
1984	34	32.7
1985	39	32.7
1986	33	32.7
1987	36	32.7
1988	27	32.7
1989	38	32.7
1990	32	29.1
1991	33	29.1
1992	42	29.1
1993	43	29.1
1994	13	29.1
1995	30	29.1
1997	19	29.1
1998	27	29.1
1999	23	29.1
2002	14	20.5
2003	22	20.5
2004	29	20.5
2005	22	20.5
2006	14	20.5
2007	25	20.5
2008	16	20.5
2009	22	20.5
2010	40	26.5
2011	26	26.5
2012	21	26.5
2013	31	26.5
2014	25	26.5
2018	16	26.5
2020	31	28.7
2021	32	28.7
2022	36	28.7
2023	28	28.7
2024	18	28.7
2025	29	28.7
2026	27	28.7

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

First to last qualifying date each year at Blackwood
Year	First date	Last date
1879	1879-02-10	1879-12-26
1880	1880-01-07	1880-12-15
1881	1881-01-11	1881-12-19
1882	1882-03-04	1882-12-31
1883	1883-02-08	1883-12-12
1884	1884-01-20	1884-12-15
1885	1885-01-05	1885-12-24
1886	1886-01-06	1886-12-18
1888	1888-01-12	1888-12-31
1889	1889-01-01	1889-12-19
1890	1890-01-09	1890-12-23
1891	1891-01-05	1891-12-15
1892	1892-03-14	1892-12-30
1893	1893-01-19	1893-12-28
1894	1894-03-20	1894-12-12
1895	1895-01-03	1895-12-15
1896	1896-01-13	1896-11-26
1897	1897-01-08	1897-11-19
1898	1898-02-27	1898-12-23
1899	1899-01-12	1899-11-24
1900	1900-01-07	1900-11-18
1901	1901-01-03	1901-10-28
1902	1902-01-05	1902-12-24
1903	1903-01-08	1903-12-29
1904	1904-01-03	1904-11-02
1905	1905-01-03	1905-12-31
1906	1906-03-01	1906-12-18
1907	1907-02-06	1907-12-29
1908	1908-01-10	1908-11-27
1909	1909-01-04	1909-12-04
1910	1910-01-15	1910-12-27
1911	1911-01-14	1911-12-19
1912	1912-02-08	1912-12-10
1913	1913-02-15	1913-12-23
1914	1914-01-12	1914-12-26
1915	1915-01-07	1915-10-23
1916	1916-01-28	1916-12-12
1917	1917-01-22	1917-12-30
1918	1918-01-15	1918-12-21
1919	1919-02-18	1919-12-25
1920	1920-01-20	1920-11-15
1925	1925-01-09	1925-12-28
1928	1928-01-18	1928-12-14
1929	1929-01-25	1929-12-25
1930	1930-02-10	1930-11-22
1939	1939-02-17	1939-12-05
1940	1940-01-11	1940-12-20
1941	1941-01-04	1941-12-04
1942	1942-01-20	1942-11-22
1943	1943-01-03	1943-11-19
1944	1944-01-23	1944-12-23
1945	1945-01-31	1945-11-17
1946	1946-01-17	1946-12-29
1947	1947-02-03	1947-12-23
1948	1948-01-03	1948-12-29
1949	1949-02-21	1949-11-29
1950	1950-02-01	1950-12-30
1951	1951-02-18	1951-12-20
1952	1952-02-10	1952-12-11
1953	1953-01-06	1953-12-11
1954	1954-01-29	1954-12-12
1955	1955-01-28	1955-12-31
1956	1956-01-11	1956-11-16
1957	1957-02-07	1957-12-25
1958	1958-01-31	1958-12-13
1959	1959-01-26	1959-12-26
1960	1960-01-09	1960-12-16
1961	1961-01-01	1961-12-16
1962	1962-01-17	1962-12-04
1963	1963-01-14	1963-12-06
1964	1964-02-07	1964-12-28
1965	1965-04-16	1965-12-08
1966	1966-02-14	1966-12-26
1967	1967-03-31	1967-12-30
1968	1968-01-20	1968-12-27
1969	1969-02-11	1969-12-02
1970	1970-01-02	1970-12-29
1971	1971-01-01	1971-12-22
1972	1972-01-13	1972-11-11
1973	1973-01-13	1973-12-22
1974	1974-01-04	1974-12-28
1975	1975-01-09	1975-12-30
1976	1976-02-01	1976-12-24
1977	1977-01-15	1977-11-28
1978	1978-01-30	1978-12-18
1979	1979-01-17	1979-10-24
1980	1980-01-12	1980-12-14
1981	1981-01-09	1981-12-14
1982	1982-01-25	1982-12-09
1983	1983-01-02	1983-11-30
1984	1984-01-02	1984-11-11
1985	1985-01-03	1985-12-31
1986	1986-04-16	1986-12-17
1987	1987-01-03	1987-12-28
1988	1988-01-01	1988-12-26
1989	1989-01-04	1989-12-26
1990	1990-02-01	1990-12-03
1991	1991-01-05	1991-12-31
1992	1992-01-01	1992-12-23
1993	1993-01-17	1993-12-28
1994	1994-01-04	1994-10-08
1995	1995-01-06	1995-11-22
1997	1997-01-23	1997-11-14
1998	1998-01-26	1998-12-27
1999	1999-03-03	1999-12-28
2002	2002-01-02	2002-12-31
2003	2003-01-01	2003-12-22
2004	2004-01-05	2004-12-14
2005	2005-01-04	2005-12-07
2006	2006-01-11	2006-09-24
2007	2007-01-01	2007-12-23
2008	2008-02-07	2008-12-14
2009	2009-03-15	2009-12-18
2010	2010-01-01	2010-12-02
2011	2011-01-11	2011-12-19
2012	2012-02-11	2012-11-01
2013	2013-02-15	2013-12-07
2014	2014-02-19	2014-12-07
2018	2018-06-15	2018-12-22
2020	2020-01-06	2020-12-23
2021	2021-01-05	2021-12-09
2022	2022-01-08	2022-12-12
2023	2023-02-03	2023-12-27
2024	2024-01-03	2024-12-03
2025	2025-01-07	2025-12-22
2026	2026-02-09	2026-10-04

Every Fixed Threshold

Fixed thresholds at Blackwood
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	126	53	1952	27
25 mm (0.98 in): Days with 25 mm or more rain	124	15	1954	10
50 mm (1.97 in): Days with 50 mm or more rain	77	5	1906	1
100 mm (3.94 in): Days with 100 mm or more rain	12	2	1919	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1879.

Download the Data

Data for Blackwood 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 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Blackwood Threshold Days by Year

Key Facts for Blackwood Thresholds

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

Every Fixed Threshold

Download the Data

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