Boyanup Threshold Days by Year

4 fixed thresholds counted per year at Boyanup (ASN00009503): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Boyanup Thresholds

Boyanup: days with 10 mm (0.39 in) or more of precipitation in 78 years, most in 1917 with 53.
Boyanup: days with 25 mm (0.98 in) or more of precipitation in 78 years, most in 1963 with 15.
Boyanup: days with 50 mm (1.97 in) or more of precipitation in 46 years, most in 1947 with 5.
Boyanup: days with 100 mm (3.94 in) or more of precipitation in 2 years, most in 1941 with 1.
4 fixed thresholds have at least one qualifying day at Boyanup.

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

78 years with a qualifying day

Days per year at Boyanup with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 53 in 1917.

Days with 10 mm (0.39 in) or more of precipitation per year at Boyanup
Year	Days	Decade average
1907	43	37.3
1908	33	37.3
1909	36	37.3
1910	46	34.8
1911	30	34.8
1912	29	34.8
1913	34	34.8
1914	23	34.8
1915	37	34.8
1916	34	34.8
1917	53	34.8
1918	38	34.8
1919	24	34.8
1920	37	38.7
1921	44	38.7
1922	38	38.7
1923	39	38.7
1924	39	38.7
1925	26	38.7
1926	53	38.7
1927	41	38.7
1928	38	38.7
1929	32	38.7
1930	34	32.3
1931	31	32.3
1932	30	32.3
1933	38	32.3
1934	29	32.3
1935	32	32.3
1936	30	32.3
1937	32	32.3
1938	30	32.3
1939	37	32.3
1940	16	34.4
1941	41	34.4
1942	45	34.4
1943	31	34.4
1944	32	34.4
1945	43	34.4
1946	41	34.4
1947	32	34.4
1948	29	34.4
1949	34	34.4
1950	30	31.8
1951	30	31.8
1953	31	31.8
1954	27	31.8
1955	40	31.8
1956	32	31.8
1957	34	31.8
1958	28	31.8
1959	34	31.8
1960	29	35.5
1961	38	35.5
1962	32	35.5
1963	46	35.5
1964	43	35.5
1965	37	35.5
1966	32	35.5
1967	41	35.5
1968	29	35.5
1969	28	35.5
1970	34	29.1
1971	35	29.1
1972	20	29.1
1973	34	29.1
1974	43	29.1
1975	26	29.1
1976	28	29.1
1977	23	29.1
1978	27	29.1
1979	21	29.1
1983	24	24
1995	25	23.8
1996	31	23.8
1997	18	23.8
1998	21	23.8
2000	21	21

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

First to last qualifying date each year at Boyanup
Year	First date	Last date
1907	1907-03-18	1907-10-24
1908	1908-02-26	1908-10-14
1909	1909-03-27	1909-10-26
1910	1910-01-04	1910-11-27
1911	1911-03-02	1911-10-19
1912	1912-04-02	1912-10-20
1913	1913-02-15	1913-12-20
1914	1914-02-17	1914-11-22
1915	1915-01-31	1915-11-12
1916	1916-01-04	1916-11-23
1917	1917-02-10	1917-12-20
1918	1918-01-20	1918-10-28
1919	1919-05-05	1919-10-15
1920	1920-03-29	1920-10-10
1921	1921-02-19	1921-12-08
1922	1922-02-23	1922-12-05
1923	1923-01-20	1923-10-04
1924	1924-05-11	1924-11-10
1925	1925-01-23	1925-10-19
1926	1926-03-16	1926-11-27
1927	1927-01-11	1927-10-14
1928	1928-01-09	1928-11-02
1929	1929-02-08	1929-11-15
1930	1930-04-21	1930-10-17
1931	1931-03-11	1931-10-06
1932	1932-03-28	1932-10-29
1933	1933-01-16	1933-10-19
1934	1934-03-27	1934-10-22
1935	1935-04-04	1935-10-21
1936	1936-01-11	1936-11-07
1937	1937-02-11	1937-10-22
1938	1938-03-16	1938-12-04
1939	1939-01-21	1939-11-10
1940	1940-05-17	1940-10-21
1941	1941-04-15	1941-11-16
1942	1942-03-01	1942-12-02
1943	1943-01-31	1943-12-08
1944	1944-04-29	1944-12-15
1945	1945-03-26	1945-12-25
1946	1946-04-19	1946-12-23
1947	1947-04-02	1947-10-25
1948	1948-03-30	1948-12-26
1949	1949-03-14	1949-10-21
1950	1950-05-04	1950-12-06
1951	1951-02-21	1951-12-06
1953	1953-02-02	1953-10-27
1954	1954-04-12	1954-11-07
1955	1955-02-15	1955-10-27
1956	1956-03-04	1956-11-29
1957	1957-03-19	1957-10-04
1958	1958-01-27	1958-10-03
1959	1959-04-11	1959-12-31
1960	1960-01-01	1960-09-23
1961	1961-01-26	1961-12-15
1962	1962-05-12	1962-12-05
1963	1963-01-10	1963-10-17
1964	1964-04-11	1964-12-19
1965	1965-03-26	1965-12-20
1966	1966-01-03	1966-12-27
1967	1967-04-15	1967-12-24
1968	1968-01-07	1968-10-20
1969	1969-03-10	1969-12-09
1970	1970-02-05	1970-10-06
1971	1971-02-06	1971-11-23
1972	1972-04-20	1972-10-28
1973	1973-04-09	1973-11-01
1974	1974-04-14	1974-10-30
1975	1975-04-01	1975-09-26
1976	1976-01-07	1976-11-13
1977	1977-01-18	1977-10-12
1978	1978-02-18	1978-12-22
1979	1979-03-15	1979-11-13
1983	1983-05-03	1983-10-11
1995	1995-05-10	1995-12-25
1996	1996-05-08	1996-12-12
1997	1997-02-25	1997-11-21
1998	1998-03-10	1998-09-22
2000	2000-03-10	2000-09-06

Every Fixed Threshold

Fixed thresholds at Boyanup
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	78	53	1917	21
25 mm (0.98 in): Days with 25 mm or more rain	78	15	1963	7
50 mm (1.97 in): Days with 50 mm or more rain	46	5	1947	1
100 mm (3.94 in): Days with 100 mm or more rain	2	1	1941	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1907.

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Data for Boyanup 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

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

Boyanup Threshold Days by Year

Key Facts for Boyanup Thresholds

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

Every Fixed Threshold

Download the Data

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