Trier-Zewen Threshold Days by Year (GME00129430)

12 fixed thresholds counted per year at Trier-Zewen (GME00129430): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Trier-Zewen Thresholds

Trier-Zewen: days with 10 mm (0.39 in) or more of precipitation in 107 years, most in 1995 with 32.
Trier-Zewen: days with a maximum temperature at or above 30 C (86 F) in 96 years, most in 1947 with 41.
Trier-Zewen: nights with a minimum temperature at or below 0 C (32 F) in 96 years, most in 1909 with 105.
Trier-Zewen: days with a maximum temperature at or below 0 C (32 F) in 92 years, most in 1963 with 51.
12 fixed thresholds have at least one qualifying day at Trier-Zewen.

Days at or above 30 C (86 F)

96 years with a qualifying day

Days per year at Trier-Zewen with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 41 in 1947.

Days at or above 30 C (86 F) per year at Trier-Zewen
Year	Days	Decade average
1908	7	5.5
1909	4	5.5
1910	1	9.2
1911	36	9.2
1912	8	9.2
1913	2	9.2
1914	6	9.2
1915	6	9.2
1916	2	9.2
1917	10	9.2
1918	7	9.2
1919	14	9.2
1920	3	9.4
1921	21	9.4
1922	5	9.4
1923	13	9.4
1924	4	9.4
1925	4	9.4
1926	6	9.4
1927	3	9.4
1928	11	9.4
1929	24	9.4
1930	15	11.2
1931	7	11.2
1932	12	11.2
1933	13	11.2
1934	9	11.2
1947	41	21.7
1948	13	21.7
1949	11	21.7
1950	13	9.2
1951	1	9.2
1952	13	9.2
1953	12	9.2
1954	6	9.2
1955	6	9.2
1956	4	9.2
1957	14	9.2
1958	1	9.2
1959	22	9.2
1960	1	7
1961	12	7
1962	4	7
1963	3	7
1964	17	7
1965	1	7
1966	6	7
1967	10	7
1968	4	7
1969	12	7
1970	5	9.4
1971	9	9.4
1972	5	9.4
1973	24	9.4
1974	3	9.4
1975	15	9.4
1976	24	9.4
1977	3	9.4
1978	2	9.4
1979	4	9.4
1980	2	6.9
1981	2	6.9
1982	9	6.9
1983	19	6.9
1984	7	6.9
1985	4	6.9
1986	9	6.9
1987	3	6.9
1988	4	6.9
1989	10	6.9
1990	14	13.4
1991	16	13.4
1992	7	13.4
1993	3	13.4
1994	23	13.4
1995	23	13.4
1997	9	13.4
1998	12	13.4
2009	9	9
2010	15	16.1
2011	9	16.1
2012	11	16.1
2013	15	16.1
2014	8	16.1
2015	24	16.1
2016	12	16.1
2017	19	16.1
2018	24	16.1
2019	24	16.1
2020	23	25.6
2021	6	25.6
2022	40	25.6
2023	22	25.6
2024	16	25.6
2025	22	25.6
2026	50	25.6

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

First to last qualifying date each year at Trier-Zewen
Year	First date	Last date
1908	1908-06-01	1908-07-28
1909	1909-06-02	1909-08-16
1910	1910-05-20	1910-05-20
1911	1911-07-07	1911-09-13
1912	1912-05-12	1912-07-17
1913	1913-05-29	1913-06-17
1914	1914-07-01	1914-08-11
1915	1915-06-03	1915-07-04
1916	1916-07-31	1916-08-02
1917	1917-05-12	1917-07-29
1918	1918-05-21	1918-08-23
1919	1919-06-08	1919-09-13
1920	1920-06-29	1920-07-17
1921	1921-06-04	1921-09-15
1922	1922-05-22	1922-06-01
1923	1923-07-07	1923-08-15
1924	1924-05-15	1924-07-16
1925	1925-06-12	1925-08-09
1926	1926-07-14	1926-09-19
1927	1927-06-17	1927-08-06
1928	1928-07-03	1928-09-09
1929	1929-05-25	1929-09-12
1930	1930-06-12	1930-08-31
1931	1931-05-26	1931-08-05
1932	1932-05-15	1932-08-26
1933	1933-07-20	1933-08-12
1934	1934-06-17	1934-09-08
1947	1947-05-31	1947-09-19
1948	1948-06-09	1948-08-01
1949	1949-07-12	1949-09-06
1950	1950-06-05	1950-08-23
1951	1951-07-31	1951-07-31
1952	1952-06-29	1952-08-13
1953	1953-05-19	1953-09-02
1954	1954-05-27	1954-09-01
1955	1955-07-16	1955-08-23
1956	1956-05-28	1956-07-27
1957	1957-06-15	1957-08-05
1958	1958-08-30	1958-08-30
1959	1959-06-21	1959-09-12
1960	1960-06-23	1960-06-23
1961	1961-06-25	1961-09-19
1962	1962-07-10	1962-09-03
1963	1963-07-22	1963-08-06
1964	1964-06-12	1964-09-14
1965	1965-06-30	1965-06-30
1966	1966-06-10	1966-08-13
1967	1967-06-23	1967-07-31
1968	1968-06-30	1968-07-10
1969	1969-05-13	1969-08-10
1970	1970-06-27	1970-08-07
1971	1971-07-08	1971-08-19
1972	1972-06-27	1972-07-21
1973	1973-06-26	1973-09-09
1974	1974-08-14	1974-08-16
1975	1975-07-08	1975-08-21
1976	1976-05-08	1976-08-26
1977	1977-06-13	1977-07-12
1978	1978-07-29	1978-07-30
1979	1979-05-30	1979-07-29
1980	1980-07-26	1980-08-02
1981	1981-08-05	1981-08-06
1982	1982-06-01	1982-09-05
1983	1983-06-08	1983-08-27
1984	1984-07-08	1984-08-23
1985	1985-07-14	1985-08-14
1986	1986-06-16	1986-08-03
1987	1987-06-29	1987-08-22
1988	1988-07-23	1988-08-14
1989	1989-06-20	1989-08-20
1990	1990-06-26	1990-08-28
1991	1991-07-02	1991-09-04
1992	1992-05-14	1992-08-09
1993	1993-06-09	1993-07-04
1994	1994-06-26	1994-08-22
1995	1995-06-28	1995-08-22
1997	1997-06-07	1997-08-25
1998	1998-05-11	1998-08-11
2009	2009-05-25	2009-08-27
2010	2010-06-28	2010-08-21
2011	2011-05-30	2011-09-03
2012	2012-07-25	2012-09-10
2013	2013-06-17	2013-09-06
2014	2014-06-07	2014-07-23
2015	2015-06-05	2015-08-31
2016	2016-06-23	2016-09-14
2017	2017-05-17	2017-08-29
2018	2018-06-30	2018-09-18
2019	2019-06-02	2019-08-31
2020	2020-06-02	2020-09-16
2021	2021-06-14	2021-06-19
2022	2022-05-18	2022-09-06
2023	2023-06-10	2023-09-11
2024	2024-06-26	2024-09-01
2025	2025-05-31	2025-08-19
2026	2026-05-23	2026-08-27

Every Fixed Threshold

Fixed thresholds at Trier-Zewen
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	96	41	1947	50
35 C (95 F): Days	33	9	2015	15
40 C (104 F): Days	1	0	n/a	2
90 F (32.2 C): Days	75	25	1947	33
100 F (37.8 C): Days	7	2	2015	7
0 C (32 F): Ice days (max	92	51	1963	2
0 C (32 F): Frost days (min	96	105	1909	31
-10 C (14 F): Days with min	60	22	1929	1
20 C (68 F): Tropical nights (min	12	4	1952	5
10 mm (0.39 in): Days with 10 mm or more rain	107	32	1995	7
25 mm (0.98 in): Days with 25 mm or more rain	86	7	1922	1
50 mm (1.97 in): Days with 50 mm or more rain	7	2	2021	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1908.

Download the Data

Data for Trier-Zewen 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).

Trier-Zewen Threshold Days by Year (GME00129430)

Key Facts for Trier-Zewen Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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