Westernport Threshold Days by Year (USC00189405)

18 fixed thresholds counted per year at Westernport (USC00189405): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Westernport Thresholds

Westernport: days with a maximum temperature at or above 30 C (86 F) in 74 years, most in 1959 with 93.
Westernport: days with a maximum temperature at or above 90 F (32.2 C) in 74 years, most in 1936 with 62.
Westernport: days with a maximum temperature at or below 0 C (32 F) in 74 years, most in 1901 with 46.
Westernport: nights with a minimum temperature at or below 0 C (32 F) in 73 years, most in 1895 with 162.
18 fixed thresholds have at least one qualifying day at Westernport.

Days at or above 30 C (86 F)

74 years with a qualifying day

Days per year at Westernport with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 93 in 1959.

Days at or above 30 C (86 F) per year at Westernport
Year	Days	Decade average
1895	85	69.2
1896	84	69.2
1897	64	69.2
1898	74	69.2
1899	39	69.2
1900	64	48.6
1901	40	48.6
1902	58	48.6
1903	35	48.6
1904	40	48.6
1905	46	48.6
1906	61	48.6
1907	38	48.6
1908	63	48.6
1909	41	48.6
1910	63	67.2
1911	77	67.2
1912	63	67.2
1913	77	67.2
1914	73	67.2
1915	51	67.2
1916	68	67.2
1917	59	67.2
1918	63	67.2
1919	78	67.2
1920	47	60.4
1921	84	60.4
1922	80	60.4
1923	69	60.4
1924	43	60.4
1925	73	60.4
1926	58	60.4
1927	41	60.4
1928	42	60.4
1929	67	60.4
1930	84	74.3
1931	78	74.3
1932	83	74.3
1933	70	74.3
1934	78	74.3
1935	59	74.3
1936	86	74.3
1937	61	74.3
1938	69	74.3
1939	75	74.3
1940	49	56.3
1941	76	56.3
1942	50	56.3
1943	67	56.3
1944	66	56.3
1945	49	56.3
1946	35	56.3
1947	66	56.3
1948	42	56.3
1949	63	56.3
1950	37	67.9
1951	71	67.9
1952	74	67.9
1953	84	67.9
1954	68	67.9
1955	68	67.9
1956	53	67.9
1957	82	67.9
1958	49	67.9
1959	93	67.9
1960	58	57.1
1961	54	57.1
1962	49	57.1
1963	49	57.1
1964	62	57.1
1965	70	57.1
1966	70	57.1
1967	38	57.1
1968	64	57.1

For each year, a bar from the first to the last day at Westernport meeting 30 C (86 F).

First to last qualifying date each year at Westernport
Year	First date	Last date
1895	1895-05-09	1895-09-26
1896	1896-04-13	1896-09-19
1897	1897-04-25	1897-10-16
1898	1898-05-02	1898-09-18
1899	1899-04-29	1899-09-08
1900	1900-05-08	1900-09-27
1901	1901-05-24	1901-08-30
1902	1902-04-22	1902-09-11
1903	1903-04-30	1903-09-16
1904	1904-05-13	1904-09-29
1905	1905-05-04	1905-10-01
1906	1906-05-04	1906-09-21
1907	1907-03-22	1907-09-21
1908	1908-04-23	1908-09-26
1909	1909-04-18	1909-09-14
1910	1910-03-24	1910-10-06
1911	1911-05-10	1911-09-25
1912	1912-04-06	1912-10-12
1913	1913-04-23	1913-11-22
1914	1914-04-18	1914-10-22
1915	1915-04-25	1915-10-15
1916	1916-04-20	1916-10-08
1917	1917-04-20	1917-10-03
1918	1918-05-05	1918-10-17
1919	1919-05-04	1919-10-16
1920	1920-05-29	1920-10-22
1921	1921-03-27	1921-09-29
1922	1922-04-10	1922-10-06
1923	1923-05-15	1923-10-14
1924	1924-05-06	1924-10-16
1925	1925-04-23	1925-09-28
1926	1926-05-01	1926-10-05
1927	1927-04-20	1927-10-06
1928	1928-05-04	1928-10-17
1929	1929-03-24	1929-09-29
1930	1930-04-11	1930-10-15
1931	1931-05-28	1931-10-07
1932	1932-02-11	1932-10-03
1933	1933-04-29	1933-10-01
1934	1934-05-05	1934-09-10
1935	1935-04-26	1935-10-14
1936	1936-05-01	1936-09-27
1937	1937-05-12	1937-10-06
1938	1938-03-22	1938-10-19
1939	1939-04-24	1939-10-10
1940	1940-05-06	1940-09-21
1941	1941-04-13	1941-10-07
1942	1942-04-24	1942-09-19
1943	1943-05-06	1943-09-06
1944	1944-05-03	1944-09-04
1945	1945-04-13	1945-09-28
1946	1946-06-07	1946-10-07
1947	1947-04-05	1947-10-23
1948	1948-04-25	1948-09-17
1949	1949-05-04	1949-10-21
1950	1950-05-04	1950-08-28
1951	1951-05-02	1951-10-05
1952	1952-04-21	1952-10-01
1953	1953-05-10	1953-10-19
1954	1954-04-07	1954-10-14
1955	1955-05-04	1955-10-07
1956	1956-04-28	1956-09-23
1957	1957-04-20	1957-09-22
1958	1958-04-18	1958-09-26
1959	1959-04-08	1959-10-06
1960	1960-04-13	1960-09-09
1961	1961-05-15	1961-09-25
1962	1962-04-26	1962-10-16
1963	1963-04-03	1963-10-07
1964	1964-04-17	1964-09-17
1965	1965-05-02	1965-09-23
1966	1966-05-08	1966-09-11
1967	1967-04-14	1967-10-05
1968	1968-05-03	1968-09-24

Every Fixed Threshold

Fixed thresholds at Westernport
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	74	93	1959	64
35 C (95 F): Days	68	28	1895	11
40 C (104 F): Days	8	3	1930	1
90 F (32.2 C): Days	74	62	1936	40
100 F (37.8 C): Days	28	8	1930	2
0 C (32 F): Ice days (max	74	46	1901	18
0 C (32 F): Frost days (min	73	162	1895	87
-10 C (14 F): Days with min	73	41	1895	28
-20 C (-4 F): Days with min	25	6	1936	2
20 C (68 F): Tropical nights (min	73	18	1959	14
25 C (77 F): Days with min	3	2	1968	2
10 mm (0.39 in): Days with 10 mm or more rain	72	51	1921	21
25 mm (0.98 in): Days with 25 mm or more rain	72	12	1921	5
50 mm (1.97 in): Days with 50 mm or more rain	36	4	1949	1
100 mm (3.94 in): Days with 100 mm or more rain	5	1	1896	1
10 cm (3.9 in): Days with 10 cm or more snowfall	14	5	1943	3
25 cm (9.8 in): Days with 25 cm or more snowfall	6	2	1964	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	1967	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1895.

Download the Data

Data for Westernport 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).

Westernport Threshold Days by Year (USC00189405)

Key Facts for Westernport Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related