Portarlington Threshold Days by Year (ASN00087053)

4 fixed thresholds counted per year at Portarlington (ASN00087053): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Portarlington Thresholds

Portarlington: days with 10 mm (0.39 in) or more of precipitation in 104 years, most in 1934 with 27.
Portarlington: days with 25 mm (0.98 in) or more of precipitation in 93 years, most in 1924 with 9.
Portarlington: days with 50 mm (1.97 in) or more of precipitation in 27 years, most in 1891 with 3.
Portarlington: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1973 with 1.
4 fixed thresholds have at least one qualifying day at Portarlington.

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

104 years with a qualifying day

Days per year at Portarlington with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 27 in 1934.

Days with 10 mm (0.39 in) or more of precipitation per year at Portarlington
Year	Days	Decade average
1885	18	16.8
1886	10	16.8
1887	20	16.8
1888	15	16.8
1889	21	16.8
1890	17	18.3
1891	21	18.3
1892	19	18.3
1893	23	18.3
1894	18	18.3
1895	14	18.3
1896	20	18.3
1897	19	18.3
1898	8	18.3
1899	24	18.3
1900	13	14.9
1901	20	14.9
1902	12	14.9
1903	18	14.9
1904	14	14.9
1905	16	14.9
1906	18	14.9
1907	10	14.9
1908	12	14.9
1909	16	14.9
1910	19	17.5
1911	25	17.5
1912	12	17.5
1913	21	17.5
1914	13	17.5
1915	15	17.5
1916	21	17.5
1917	18	17.5
1918	20	17.5
1919	11	17.5
1920	15	15
1921	21	15
1922	18	15
1923	12	15
1924	21	15
1925	12	15
1926	13	15
1927	10	15
1928	15	15
1929	13	15
1930	17	17.1
1931	21	17.1
1932	22	17.1
1933	12	17.1
1934	27	17.1
1935	17	17.1
1936	15	17.1
1937	13	17.1
1938	8	17.1
1939	19	17.1
1940	14	15.5
1941	21	15.5
1942	18	15.5
1943	12	15.5
1944	12	15.5
1945	10	15.5
1946	16	15.5
1947	17	15.5
1948	14	15.5
1949	21	15.5
1950	14	15.9
1951	15	15.9
1952	20	15.9
1953	19	15.9
1954	11	15.9
1955	19	15.9
1956	16	15.9
1957	10	15.9
1958	19	15.9
1959	16	15.9
1960	19	15.1
1961	15	15.1
1962	16	15.1
1963	11	15.1
1964	22	15.1
1965	12	15.1
1966	24	15.1
1967	8	15.1
1968	10	15.1
1969	14	15.1
1970	19	16.8
1971	15	16.8
1972	9	16.8
1973	24	16.8
2002	6	13.1
2003	14	13.1
2004	21	13.1
2005	16	13.1
2006	7	13.1
2007	17	13.1
2008	13	13.1
2009	11	13.1
2010	19	14
2011	13	14
2012	16	14
2013	16	14
2014	10	14
2015	11	14
2016	13	14

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

First to last qualifying date each year at Portarlington
Year	First date	Last date
1885	1885-01-06	1885-12-20
1886	1886-02-05	1886-12-18
1887	1887-02-17	1887-12-13
1888	1888-01-05	1888-12-31
1889	1889-01-01	1889-12-21
1890	1890-01-10	1890-12-07
1891	1891-03-29	1891-12-13
1892	1892-03-15	1892-12-10
1893	1893-03-04	1893-12-27
1894	1894-02-28	1894-12-28
1895	1895-01-04	1895-12-10
1896	1896-01-09	1896-12-27
1897	1897-01-08	1897-12-02
1898	1898-05-17	1898-12-23
1899	1899-01-18	1899-11-07
1900	1900-01-19	1900-09-26
1901	1901-01-03	1901-11-15
1902	1902-01-05	1902-12-20
1903	1903-01-22	1903-12-29
1904	1904-01-21	1904-11-02
1905	1905-02-12	1905-10-27
1906	1906-03-10	1906-11-28
1907	1907-03-05	1907-12-28
1908	1908-01-10	1908-10-20
1909	1909-01-05	1909-12-01
1910	1910-03-06	1910-12-10
1911	1911-02-09	1911-12-26
1912	1912-02-08	1912-12-09
1913	1913-03-05	1913-12-23
1914	1914-01-12	1914-12-26
1915	1915-01-07	1915-11-23
1916	1916-01-28	1916-12-12
1917	1917-01-22	1917-12-31
1918	1918-02-04	1918-12-26
1919	1919-02-18	1919-12-29
1920	1920-01-27	1920-12-15
1921	1921-01-03	1921-11-26
1922	1922-02-21	1922-12-26
1923	1923-01-05	1923-11-17
1924	1924-01-28	1924-12-27
1925	1925-01-13	1925-11-20
1926	1926-01-07	1926-12-22
1927	1927-03-19	1927-12-10
1928	1928-01-18	1928-12-24
1929	1929-03-25	1929-12-28
1930	1930-02-21	1930-12-26
1931	1931-02-14	1931-11-21
1932	1932-02-06	1932-12-24
1933	1933-04-11	1933-12-15
1934	1934-01-07	1934-12-01
1935	1935-01-05	1935-12-02
1936	1936-01-04	1936-12-17
1937	1937-01-24	1937-10-18
1938	1938-02-05	1938-11-04
1939	1939-02-17	1939-11-26
1940	1940-01-06	1940-12-20
1941	1941-01-25	1941-12-05
1942	1942-01-20	1942-12-19
1943	1943-01-18	1943-11-18
1944	1944-01-23	1944-10-28
1945	1945-01-31	1945-11-17
1946	1946-01-17	1946-11-13
1947	1947-02-04	1947-12-26
1948	1948-02-15	1948-12-28
1949	1949-01-16	1949-12-21
1950	1950-02-02	1950-12-20
1951	1951-01-08	1951-12-10
1952	1952-04-24	1952-12-11
1953	1953-01-06	1953-11-27
1954	1954-02-01	1954-12-04
1955	1955-01-28	1955-12-31
1956	1956-01-13	1956-11-16
1957	1957-02-07	1957-11-26
1958	1958-02-01	1958-12-12
1959	1959-02-14	1959-12-26
1960	1960-01-09	1960-12-02
1961	1961-02-09	1961-12-19
1962	1962-01-17	1962-10-13
1963	1963-01-14	1963-12-06
1964	1964-02-07	1964-12-09
1965	1965-04-05	1965-12-02
1966	1966-01-13	1966-12-16
1967	1967-05-19	1967-12-30
1968	1968-01-21	1968-12-16
1969	1969-02-11	1969-11-06
1970	1970-01-02	1970-12-28
1971	1971-01-01	1971-12-23
1972	1972-01-13	1972-04-25
1973	1973-01-13	1973-11-29
2002	2002-02-08	2002-08-13
2003	2003-01-01	2003-12-22
2004	2004-01-30	2004-12-11
2005	2005-01-27	2005-12-07
2006	2006-01-02	2006-08-24
2007	2007-01-21	2007-12-22
2008	2008-01-19	2008-12-14
2009	2009-03-15	2009-12-18
2010	2010-02-12	2010-11-28
2011	2011-01-11	2011-12-11
2012	2012-02-28	2012-11-28
2013	2013-02-01	2013-11-13
2014	2014-03-16	2014-12-07
2015	2015-01-08	2015-12-26
2016	2016-03-18	2016-11-13

Every Fixed Threshold

Fixed thresholds at Portarlington
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	104	27	1934	13
25 mm (0.98 in): Days with 25 mm or more rain	93	9	1924	1
50 mm (1.97 in): Days with 50 mm or more rain	27	3	1891	2
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1973	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1885.

Download the Data

Data for Portarlington 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).

Portarlington Threshold Days by Year (ASN00087053)

Key Facts for Portarlington Thresholds

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

Every Fixed Threshold

Download the Data

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