Wien Threshold Days by Year (AU000005901)

14 fixed thresholds counted per year at Wien (AU000005901): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Wien Thresholds

Wien: days with a maximum temperature at or below 0 C (32 F) in 171 years, most in 1940 with 71.
Wien: nights with a minimum temperature at or below 0 C (32 F) in 170 years, most in 1875 with 126.
Wien: days with a maximum temperature at or above 30 C (86 F) in 155 years, most in 2024 with 45.
Wien: nights with a minimum temperature at or below -10 C (14 F) in 138 years, most in 1940 with 42.
14 fixed thresholds have at least one qualifying day at Wien.

Days at or above 30 C (86 F)

155 years with a qualifying day

Days per year at Wien with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 45 in 2024.

Days at or above 30 C (86 F) per year at Wien
Year	Days	Decade average
1855	21	23.6
1856	27	23.6
1857	24	23.6
1858	14	23.6
1859	32	23.6
1860	13	16.9
1861	28	16.9
1863	28	16.9
1864	6	16.9
1865	20	16.9
1866	10	16.9
1867	14	16.9
1868	19	16.9
1869	14	16.9
1870	11	8.6
1871	12	8.6
1872	8	8.6
1873	16	8.6
1874	8	8.6
1875	8	8.6
1876	5	8.6
1877	10	8.6
1878	3	8.6
1879	5	8.6
1880	7	7.3
1881	10	7.3
1882	6	7.3
1883	6	7.3
1884	7	7.3
1885	9	7.3
1886	7	7.3
1887	13	7.3
1888	2	7.3
1889	6	7.3
1890	7	4.9
1891	2	4.9
1892	8	4.9
1893	3	4.9
1894	10	4.9
1895	7	4.9
1896	2	4.9
1897	3	4.9
1898	2	4.9
1899	5	4.9
1900	5	3.4
1901	2	3.4
1902	2	3.4
1903	1	3.4
1904	9	3.4
1905	3	3.4
1908	2	3.4
1910	1	2.4
1911	6	2.4
1916	1	2.4
1917	3	2.4
1919	1	2.4
1921	10	5.3
1922	4	5.3
1923	2	5.3
1927	1	5.3
1928	10	5.3
1929	5	5.3
1930	4	4.9
1931	7	4.9
1932	5	4.9
1933	6	4.9
1934	8	4.9
1935	4	4.9
1936	1	4.9
1937	1	4.9
1938	8	4.9
1939	5	4.9
1942	2	6.3
1943	5	6.3
1945	6	6.3
1946	11	6.3
1947	12	6.3
1948	2	6.3
1949	6	6.3
1950	8	6.4
1951	1	6.4
1952	13	6.4
1953	7	6.4
1954	7	6.4
1955	1	6.4
1956	3	6.4
1957	10	6.4
1958	9	6.4
1959	5	6.4
1960	2	10.1
1961	11	10.1
1962	14	10.1
1963	17	10.1
1964	17	10.1
1965	5	10.1
1966	2	10.1
1967	17	10.1
1968	10	10.1
1969	6	10.1
1970	4	7.8
1971	15	7.8
1972	13	7.8
1973	9	7.8
1974	11	7.8
1976	8	7.8
1977	2	7.8
1978	2	7.8
1979	6	7.8
1980	4	10.2
1981	11	10.2
1982	6	10.2
1983	21	10.2
1984	8	10.2
1985	11	10.2
1986	13	10.2
1987	5	10.2
1988	19	10.2
1989	4	10.2
1990	16	15.2
1991	12	15.2
1992	28	15.2
1993	15	15.2
1994	28	15.2
1995	15	15.2
1996	6	15.2
1997	3	15.2
1998	20	15.2
1999	9	15.2
2000	26	19.2
2001	21	19.2
2002	18	19.2
2003	40	19.2
2004	9	19.2
2005	12	19.2
2006	22	19.2
2007	22	19.2
2008	8	19.2
2009	14	19.2
2010	15	27.8
2011	18	27.8
2012	31	27.8
2013	26	27.8
2014	13	27.8
2015	42	27.8
2016	20	27.8
2017	38	27.8
2018	37	27.8
2019	38	27.8
2020	21	33
2021	24	33
2022	31	33
2023	32	33
2024	45	33
2025	27	33
2026	51	33

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

First to last qualifying date each year at Wien
Year	First date	Last date
1855	1855-05-31	1855-08-26
1856	1856-05-28	1856-08-18
1857	1857-06-08	1857-08-16
1858	1858-06-09	1858-08-19
1859	1859-06-03	1859-08-12
1860	1860-05-21	1860-09-02
1861	1861-06-19	1861-09-03
1863	1863-06-11	1863-09-03
1864	1864-07-12	1864-08-23
1865	1865-05-24	1865-08-29
1866	1866-06-12	1866-07-19
1867	1867-05-12	1867-09-15
1868	1868-05-25	1868-08-17
1869	1869-05-29	1869-08-05
1870	1870-05-21	1870-08-04
1871	1871-06-18	1871-08-26
1872	1872-05-19	1872-08-07
1873	1873-07-11	1873-08-27
1874	1874-06-03	1874-08-03
1875	1875-06-23	1875-08-20
1876	1876-07-27	1876-08-16
1877	1877-06-11	1877-08-30
1878	1878-05-19	1878-07-24
1879	1879-06-29	1879-08-29
1880	1880-06-12	1880-07-26
1881	1881-06-23	1881-08-09
1882	1882-05-30	1882-07-21
1883	1883-07-05	1883-09-01
1884	1884-07-13	1884-08-04
1885	1885-06-08	1885-07-15
1886	1886-05-30	1886-08-31
1887	1887-07-05	1887-09-07
1888	1888-08-12	1888-08-13
1889	1889-07-10	1889-08-19
1890	1890-07-17	1890-08-20
1891	1891-07-01	1891-07-02
1892	1892-08-16	1892-08-25
1893	1893-08-17	1893-08-24
1894	1894-07-14	1894-08-28
1895	1895-06-30	1895-09-08
1896	1896-07-28	1896-07-29
1897	1897-07-01	1897-08-19
1898	1898-07-19	1898-08-08
1899	1899-07-22	1899-08-07
1900	1900-07-03	1900-07-27
1901	1901-07-29	1901-08-01
1902	1902-07-01	1902-08-27
1903	1903-07-18	1903-07-18
1904	1904-07-09	1904-08-18
1905	1905-07-02	1905-08-05
1908	1908-06-20	1908-07-13
1910	1910-07-22	1910-07-22
1911	1911-07-24	1911-07-29
1916	1916-07-05	1916-07-05
1917	1917-07-29	1917-08-01
1919	1919-08-21	1919-08-21
1921	1921-07-24	1921-08-12
1922	1922-07-06	1922-07-23
1923	1923-07-15	1923-08-10
1927	1927-06-02	1927-06-02
1928	1928-07-04	1928-08-01
1929	1929-07-18	1929-07-25
1930	1930-06-26	1930-07-05
1931	1931-06-18	1931-07-15
1932	1932-07-05	1932-08-21
1933	1933-07-27	1933-08-12
1934	1934-06-19	1934-08-22
1935	1935-06-26	1935-08-13
1936	1936-07-18	1936-07-18
1937	1937-06-10	1937-06-10
1938	1938-06-25	1938-08-03
1939	1939-07-09	1939-08-06
1942	1942-07-26	1942-09-03
1943	1943-08-03	1943-08-22
1945	1945-07-16	1945-07-28
1946	1946-06-10	1946-08-18
1947	1947-06-02	1947-08-05
1948	1948-07-31	1948-08-08
1949	1949-07-14	1949-08-09
1950	1950-06-29	1950-08-28
1951	1951-08-04	1951-08-04
1952	1952-07-01	1952-08-15
1953	1953-07-08	1953-09-03
1954	1954-06-21	1954-09-11
1955	1955-07-19	1955-07-19
1956	1956-07-29	1956-09-03
1957	1957-06-29	1957-07-09
1958	1958-05-11	1958-08-02
1959	1959-07-10	1959-07-28
1960	1960-08-27	1960-08-28
1961	1961-06-25	1961-09-18
1962	1962-06-23	1962-09-12
1963	1963-06-28	1963-08-12
1964	1964-06-02	1964-08-29
1965	1965-06-25	1965-07-15
1966	1966-07-04	1966-08-14
1967	1967-06-25	1967-09-04
1968	1968-06-18	1968-07-11
1969	1969-07-17	1969-08-14
1970	1970-06-22	1970-08-06
1971	1971-07-10	1971-08-20
1972	1972-07-09	1972-08-15
1973	1973-07-15	1973-09-09
1974	1974-07-14	1974-08-19
1976	1976-06-29	1976-07-19
1977	1977-06-18	1977-07-13
1978	1978-07-29	1978-08-07
1979	1979-06-01	1979-08-02
1980	1980-06-14	1980-08-21
1981	1981-06-02	1981-08-16
1982	1982-06-04	1982-08-13
1983	1983-05-15	1983-08-24
1984	1984-07-10	1984-09-03
1985	1985-06-06	1985-08-16
1986	1986-06-18	1986-08-17
1987	1987-07-01	1987-09-14
1988	1988-07-04	1988-08-20
1989	1989-07-07	1989-08-16
1990	1990-06-28	1990-08-31
1991	1991-06-26	1991-08-12
1992	1992-07-04	1992-08-30
1993	1993-06-07	1993-08-22
1994	1994-06-26	1994-08-11
1995	1995-07-01	1995-08-07
1996	1996-06-08	1996-08-02
1997	1997-06-28	1997-06-30
1998	1998-06-06	1998-08-18
1999	1999-05-31	1999-08-09
2000	2000-05-27	2000-08-21
2001	2001-06-27	2001-08-27
2002	2002-06-13	2002-07-30
2003	2003-05-06	2003-09-22
2004	2004-06-09	2004-08-19
2005	2005-05-28	2005-08-02
2006	2006-06-20	2006-08-18
2007	2007-05-25	2007-08-16
2008	2008-06-21	2008-09-06
2009	2009-06-18	2009-08-28
2010	2010-06-10	2010-07-22
2011	2011-06-22	2011-09-13
2012	2012-04-30	2012-09-11
2013	2013-06-17	2013-08-19
2014	2014-06-08	2014-08-09
2015	2015-06-03	2015-09-17
2016	2016-06-23	2016-09-12
2017	2017-05-30	2017-08-31
2018	2018-06-05	2018-09-12
2019	2019-06-10	2019-09-01
2020	2020-06-27	2020-08-28
2021	2021-06-16	2021-08-15
2022	2022-05-20	2022-08-26
2023	2023-06-20	2023-09-13
2024	2024-06-18	2024-09-08
2025	2025-06-15	2025-08-28
2026	2026-05-26	2026-09-09

Every Fixed Threshold

Fixed thresholds at Wien
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	155	45	2024	51
35 C (95 F): Days	39	17	2015	17
90 F (32.2 C): Days	107	31	2015	29
100 F (37.8 C): Days	4	1	1957	7
0 C (32 F): Ice days (max	171	71	1940	14
0 C (32 F): Frost days (min	170	126	1875	38
-10 C (14 F): Days with min	138	42	1940	1
-20 C (-4 F): Days with min	10	6	1929	3
20 C (68 F): Tropical nights (min	115	26	2024	24
25 C (77 F): Days with min	2	1	2015	1
10 mm (0.39 in): Days with 10 mm or more rain	125	29	1941	10
25 mm (0.98 in): Days with 25 mm or more rain	121	8	2009	2
50 mm (1.97 in): Days with 50 mm or more rain	40	2	1930	2
100 mm (3.94 in): Days with 100 mm or more rain	1	2	2024	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1855.

Download the Data

Data for Wien 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Wien Threshold Days by Year (AU000005901)

Key Facts for Wien Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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