Trier Threshold Days by Year (GM000002277)

11 fixed thresholds counted per year at Trier (GM000002277): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Trier Thresholds

Trier: days with a maximum temperature at or above 30 C (86 F) in 78 years, most in 1947 with 41.
Trier: nights with a minimum temperature at or below 0 C (32 F) in 78 years, most in 1909 with 105.
Trier: days with 10 mm (0.39 in) or more of precipitation in 78 years, most in 1995 with 32.
Trier: days with a maximum temperature at or below 0 C (32 F) in 75 years, most in 1963 with 51.
11 fixed thresholds have at least one qualifying day at Trier.

Days at or above 30 C (86 F)

78 years with a qualifying day

Days per year at Trier 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
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

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

First to last qualifying date each year at Trier
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

Every Fixed Threshold

Fixed thresholds at Trier
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	78	41	1947	12
35 C (95 F): Days	18	5	1947	2
90 F (32.2 C): Days	57	25	1947	4
100 F (37.8 C): Days	1	1	1947	1
0 C (32 F): Ice days (max	75	51	1963	6
0 C (32 F): Frost days (min	78	105	1909	55
-10 C (14 F): Days with min	54	22	1929	2
20 C (68 F): Tropical nights (min	8	4	1952	1
10 mm (0.39 in): Days with 10 mm or more rain	78	32	1995	20
25 mm (0.98 in): Days with 25 mm or more rain	63	7	1922	2
50 mm (1.97 in): Days with 50 mm or more rain	6	1	1927	1

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 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).

Trier Threshold Days by Year (GM000002277)

Key Facts for Trier Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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