Port Arthur Threshold Days by Year (ASN00094052)

4 fixed thresholds counted per year at Port Arthur (ASN00094052): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Port Arthur Thresholds

Port Arthur: days with 10 mm (0.39 in) or more of precipitation in 77 years, most in 1916 with 44.
Port Arthur: days with 25 mm (0.98 in) or more of precipitation in 77 years, most in 1970 with 14.
Port Arthur: days with 50 mm (1.97 in) or more of precipitation in 41 years, most in 1893 with 4.
Port Arthur: days with 100 mm (3.94 in) or more of precipitation in 10 years, most in 1923 with 2.
4 fixed thresholds have at least one qualifying day at Port Arthur.

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

77 years with a qualifying day

Days per year at Port Arthur with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 44 in 1916.

Days with 10 mm (0.39 in) or more of precipitation per year at Port Arthur
Year	Days	Decade average
1838	36	36
1858	36	36
1893	34	32
1896	32	32
1897	29	32
1898	34	32
1899	31	32
1900	20	29.3
1904	29	29.3
1909	39	29.3
1910	22	29.9
1911	28	29.9
1912	29	29.9
1913	29	29.9
1914	27	29.9
1915	21	29.9
1916	44	29.9
1917	35	29.9
1918	36	29.9
1919	28	29.9
1920	21	31.3
1921	28	31.3
1922	31	31.3
1923	38	31.3
1924	32	31.3
1925	28	31.3
1926	33	31.3
1927	30	31.3
1928	31	31.3
1929	41	31.3
1930	21	28.8
1931	33	28.8
1932	28	28.8
1933	24	28.8
1934	27	28.8
1935	41	28.8
1936	22	28.8
1937	28	28.8
1938	30	28.8
1939	34	28.8
1940	22	29.7
1941	26	29.7
1945	26	29.7
1946	36	29.7
1947	36	29.7
1948	32	29.7
1949	30	29.7
1950	26	32.2
1951	30	32.2
1952	44	32.2
1953	31	32.2
1954	34	32.2
1955	26	32.2
1956	39	32.2
1957	29	32.2
1958	42	32.2
1959	21	32.2
1960	29	28.5
1961	30	28.5
1962	30	28.5
1963	24	28.5
1964	41	28.5
1965	29	28.5
1966	28	28.5
1967	18	28.5
1968	24	28.5
1969	32	28.5
1970	30	32.5
1971	38	32.5
1972	23	32.5
1973	36	32.5
1974	42	32.5
1975	39	32.5
1976	40	32.5
1977	20	32.5
1978	35	32.5
1979	22	32.5

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

First to last qualifying date each year at Port Arthur
Year	First date	Last date
1838	1838-01-05	1838-12-18
1858	1858-01-18	1858-12-19
1893	1893-01-08	1893-11-30
1896	1896-01-12	1896-11-26
1897	1897-01-04	1897-12-08
1898	1898-01-20	1898-12-23
1899	1899-01-02	1899-12-14
1900	1900-02-15	1900-12-11
1904	1904-01-03	1904-11-27
1909	1909-01-22	1909-12-09
1910	1910-01-16	1910-12-10
1911	1911-02-10	1911-12-27
1912	1912-01-17	1912-12-24
1913	1913-01-03	1913-12-26
1914	1914-03-13	1914-12-28
1915	1915-02-21	1915-11-29
1916	1916-01-18	1916-12-30
1917	1917-01-03	1917-12-05
1918	1918-01-17	1918-12-21
1919	1919-01-07	1919-12-18
1920	1920-01-26	1920-12-07
1921	1921-01-02	1921-11-28
1922	1922-01-04	1922-12-27
1923	1923-01-14	1923-12-06
1924	1924-01-11	1924-12-29
1925	1925-01-14	1925-12-26
1926	1926-01-14	1926-12-13
1927	1927-02-19	1927-12-28
1928	1928-01-01	1928-12-23
1929	1929-01-26	1929-12-21
1930	1930-03-13	1930-12-27
1931	1931-01-20	1931-12-15
1932	1932-03-10	1932-12-25
1933	1933-01-05	1933-11-30
1934	1934-01-09	1934-12-30
1935	1935-01-06	1935-12-21
1936	1936-02-09	1936-12-21
1937	1937-01-02	1937-12-18
1938	1938-01-02	1938-12-23
1939	1939-01-14	1939-12-23
1940	1940-01-06	1940-12-28
1941	1941-01-17	1941-12-06
1945	1945-01-16	1945-12-05
1946	1946-02-19	1946-12-29
1947	1947-01-03	1947-12-27
1948	1948-02-24	1948-12-27
1949	1949-01-04	1949-12-19
1950	1950-01-10	1950-12-30
1951	1951-01-08	1951-12-20
1952	1952-01-08	1952-12-17
1953	1953-01-06	1953-12-11
1954	1954-01-28	1954-12-16
1955	1955-02-19	1955-12-31
1956	1956-01-05	1956-11-30
1957	1957-01-07	1957-12-04
1958	1958-02-01	1958-12-17
1959	1959-01-07	1959-12-27
1960	1960-01-23	1960-11-17
1961	1961-02-26	1961-12-09
1962	1962-01-05	1962-12-15
1963	1963-01-17	1963-10-12
1964	1964-01-09	1964-12-24
1965	1965-01-11	1965-12-03
1966	1966-01-13	1966-12-15
1967	1967-01-16	1967-12-19
1968	1968-02-21	1968-12-10
1969	1969-02-04	1969-12-25
1970	1970-01-03	1970-12-31
1971	1971-01-01	1971-12-31
1972	1972-01-10	1972-11-03
1973	1973-01-24	1973-12-29
1974	1974-01-17	1974-12-28
1975	1975-01-09	1975-12-03
1976	1976-01-15	1976-12-13
1977	1977-01-02	1977-11-30
1978	1978-01-29	1978-12-26
1979	1979-02-16	1979-12-11

Every Fixed Threshold

Fixed thresholds at Port Arthur
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	77	44	1916	22
25 mm (0.98 in): Days with 25 mm or more rain	77	14	1970	6
50 mm (1.97 in): Days with 50 mm or more rain	41	4	1893	2
100 mm (3.94 in): Days with 100 mm or more rain	10	2	1923	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1838.

Download the Data

Data for Port Arthur 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).

Port Arthur Threshold Days by Year (ASN00094052)

Key Facts for Port Arthur Thresholds

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

Every Fixed Threshold

Download the Data

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