Trier Weather Records (GM000002277)

Record envelope, standing records and threshold days for Trier (GM000002277), Germany, with 93 years of record.

Key Facts for Trier

Trier (GM000002277) is a weather station in Germany at 49.75 latitude and 6.65 longitude, 144 m (472 ft) above sea level.
The station reports from 1907 to 1999, 93 years of record.
1,464 records set at Trier still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Trier set a daily record high maximum temperature of 12.6 C (54.7 F) on 6 January 1999.

About the Station

Location: Germany, 49.75 latitude, 6.65 longitude.
Elevation: 144 m (472 ft).
Period of record: 1907 to 1999, 93 years.
Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Trier. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Trier, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	15.3 C (59.5 F)	-18.3 C (-0.9 F)	n/a	n/a
Feb	19.7 C (67.5 F)	-19.3 C (-2.7 F)	n/a	n/a
Mar	24.2 C (75.6 F)	-13.0 C (8.6 F)	n/a	n/a
Apr	29.7 C (85.5 F)	-6.0 C (21.2 F)	n/a	n/a
May	34.5 C (94.1 F)	-2.5 C (27.5 F)	n/a	n/a
Jun	38.0 C (100.4 F)	1.4 C (34.5 F)	n/a	n/a
Jul	37.5 C (99.5 F)	4.1 C (39.4 F)	n/a	n/a
Aug	36.7 C (98.1 F)	3.2 C (37.8 F)	n/a	n/a
Sep	35.2 C (95.4 F)	-1.7 C (28.9 F)	n/a	n/a
Oct	28.6 C (83.5 F)	-6.0 C (21.2 F)	n/a	n/a
Nov	20.2 C (68.4 F)	-13.1 C (8.4 F)	n/a	n/a
Dec	18.4 C (65.1 F)	-17.2 C (1.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Trier still stand. 1921 holds the most, with 43.

Standing records at Trier by the year they were set
Year set	Standing records
1907	14
1908	23
1909	28
1910	6
1911	20
1912	28
1913	17
1914	24
1915	12
1916	9
1917	38
1918	24
1919	26
1920	24
1921	43
1922	22
1923	19
1924	9
1925	24
1926	21
1927	17
1928	10
1929	37
1930	11
1931	18
1932	8
1933	18
1934	13
1947	35
1948	17
1949	23
1950	7
1951	9
1952	23
1953	20
1954	11
1955	13
1956	32
1957	21
1958	15
1959	9
1960	10
1961	31
1962	36
1963	21
1964	11
1965	15
1966	19
1967	13
1968	18
1969	7
1970	5
1971	19
1972	14
1973	7
1974	21
1975	19
1976	22
1977	8
1978	7
1979	18
1980	19
1981	17
1982	12
1983	20
1984	14
1985	22
1986	24
1987	25
1988	12
1989	25
1990	21
1991	17
1992	12
1993	21
1994	16
1995	17
1996	7
1997	17
1998	25
1999	2

All-Time Record Progression

4 new records

4 all-time records were set at Trier between 4 July 1952 and 7 July 1989. Each dot is a new record.

When Trier set new all-time records
Date	Kind	Detail
1952-07-04	Record high minimum temperature	Record high minimum temperature 20.6 C (69.1 F)
1952-07-06	Record high minimum temperature	Record high minimum temperature 21.1 C (70.0 F)
1956-02-01	Record low maximum temperature	Record low maximum temperature -12.9 C (8.8 F)
1989-07-07	Record high minimum temperature	Record high minimum temperature 21.3 C (70.3 F)

Wettest Day of Each Month

Jul: 71.1 mm (2.8 in)

The wettest day on record for each calendar month at Trier. The most was 71.1 mm (2.8 in) on 26 July 1929.

Record daily precipitation for each month at Trier
Month	Record daily precipitation (mm)	Date
Jan	49.6 mm (2.0 in)	22 January 1995
Feb	32.1 mm (1.3 in)	9 February 1970
Mar	31.4 mm (1.2 in)	31 March 1962
Apr	40.1 mm (1.6 in)	26 April 1981
May	45.9 mm (1.8 in)	20 May 1949
Jun	56.7 mm (2.2 in)	13 June 1931
Jul	71.1 mm (2.8 in)	26 July 1929
Aug	63.7 mm (2.5 in)	21 August 1975
Sep	44.8 mm (1.8 in)	22 September 1967
Oct	48.5 mm (1.9 in)	9 October 1930
Nov	41.4 mm (1.6 in)	18 November 1971
Dec	33.3 mm (1.3 in)	20 December 1993

Period of Record Coverage

1907 to 1999

81 years of record at Trier, 1907 to 1999. 3 years have data for under 90 percent of days and are left out of rankings: 1907, 1996, 1999.

Days with data per year at Trier
Year	Days with data	Share of year	Complete
1907	245	67%	No
1908	365	100%	Yes
1909	365	100%	Yes
1910	365	100%	Yes
1911	365	100%	Yes
1912	366	100%	Yes
1913	364	100%	Yes
1914	364	100%	Yes
1915	363	99%	Yes
1916	366	100%	Yes
1917	365	100%	Yes
1918	363	99%	Yes
1919	364	100%	Yes
1920	366	100%	Yes
1921	365	100%	Yes
1922	365	100%	Yes
1923	365	100%	Yes
1924	365	100%	Yes
1925	363	99%	Yes
1926	365	100%	Yes
1927	365	100%	Yes
1928	366	100%	Yes
1929	365	100%	Yes
1930	364	100%	Yes
1931	364	100%	Yes
1932	364	99%	Yes
1933	365	100%	Yes
1934	364	100%	Yes
1947	365	100%	Yes
1948	366	100%	Yes
1949	365	100%	Yes
1950	365	100%	Yes
1951	365	100%	Yes
1952	366	100%	Yes
1953	365	100%	Yes
1954	365	100%	Yes
1955	365	100%	Yes
1956	366	100%	Yes
1957	365	100%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	366	100%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	365	100%	Yes
1984	366	100%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	365	100%	Yes
1988	366	100%	Yes
1989	365	100%	Yes
1990	365	100%	Yes
1991	365	100%	Yes
1992	366	100%	Yes
1993	365	100%	Yes
1994	365	100%	Yes
1995	365	100%	Yes
1996	304	83%	No
1997	365	100%	Yes
1998	365	100%	Yes
1999	31	8%	No

Latest Records

Latest records at Trier
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
6 January 1999	Trier, DE	daily high max	12.6 C (54.7 F)	0.4 C (0.7 F)	11 years	12 of 100 (Routine)
5 January 1999	Trier, DE	daily high max	14.5 C (58.1 F)	1.6 C (2.9 F)	11 years	15 of 100 (Routine)
23 November 1998	Trier, DE	daily low min	-10.9 C (12.4 F)	3.2 C (5.8 F)	88 years	43 of 100 (Notable)
23 November 1998	Trier, DE	daily low max	-1.8 C (28.8 F)	0.9 C (1.6 F)	41 years	23 of 100 (Routine)
21 November 1998	Trier, DE	daily low min	-7.2 C (19.0 F)	1.0 C (1.8 F)	44 years	24 of 100 (Routine)
31 October 1998	Trier, DE	daily rain	32.1 mm (1.3 in)	15.3 mm (0.6 in)	76 years	55 of 100 (Notable)
28 October 1998	Trier, DE	daily rain	38.3 mm (1.5 in)	1.8 mm (0.07 in)	8 years	13 of 100 (Routine)
3 October 1998	Trier, DE	daily low max	7.4 C (45.3 F)	1.6 C (2.9 F)	24 years	19 of 100 (Routine)
14 September 1998	Trier, DE	daily low max (Tie)	12.5 C (54.5 F)	tie	76 years	7 of 100 (Routine)
13 September 1998	Trier, DE	daily low max	11.3 C (52.3 F)	1.7 C (3.1 F)	32 years	21 of 100 (Routine)
9 September 1998	Trier, DE	daily high min	16.8 C (62.2 F)	1.1 C (2.0 F)	47 years	26 of 100 (Routine)
2 September 1998	Trier, DE	daily rain	23.5 mm (0.9 in)	6.7 mm (0.26 in)	5 years	20 of 100 (Routine)
11 August 1998	Trier, DE	monthly high max	36.7 C (98.1 F)	1.2 C (2.2 F)	77 years	44 of 100 (Notable)
10 August 1998	Trier, DE	daily high max	35.4 C (95.7 F)	1.4 C (2.5 F)	87 years	38 of 100 (Notable)
21 July 1998	Trier, DE	daily high min	19.6 C (67.3 F)	0.4 C (0.7 F)	3 years	10 of 100 (Routine)
16 July 1998	Trier, DE	daily low max	15.3 C (59.5 F)	0.3 C (0.5 F)	28 years	17 of 100 (Routine)
21 June 1998	Trier, DE	daily high max	31.9 C (89.4 F)	1.9 C (3.4 F)	39 years	24 of 100 (Routine)
10 June 1998	Trier, DE	daily high min	17.4 C (63.3 F)	0.7 C (1.3 F)	4 years	12 of 100 (Routine)
6 June 1998	Trier, DE	daily high min	18.7 C (65.7 F)	1.8 C (3.2 F)	20 years	20 of 100 (Routine)
5 June 1998	Trier, DE	daily high max	31.5 C (88.7 F)	0.7 C (1.3 F)	48 years	24 of 100 (Routine)

Climate Trend

78 complete years, 1908 to 1998

One stripe for each of 78 complete years at Trier, 1908 to 1998. Blue stripes are years cooler than the station's own mean of 10.0 C (50.0 F); red stripes are warmer. The coolest year was 1909, at 8.8 C (47.8 F), and the warmest was 1994, at 11.4 C (52.5 F). The strongest colour marks a difference of 1.4 C (2.5 F).

Annual mean temperature at Trier as warming stripes, 1908 to 1998
Year	Annual mean temperature	Difference from the station mean
1908	8.8 C	-1.19 C
1909	8.8 C	-1.23 C
1910	9.9 C	-0.08 C
1911	10.3 C	+0.27 C
1912	9.3 C	-0.71 C
1913	10.0 C	+0.02 C
1914	9.7 C	-0.37 C
1915	9.7 C	-0.28 C
1916	10.0 C	-0.02 C
1917	8.8 C	-1.23 C
1918	9.9 C	-0.08 C
1919	8.9 C	-1.09 C
1920	10.1 C	+0.04 C
1921	10.6 C	+0.57 C
1922	8.9 C	-1.08 C
1923	9.9 C	-0.15 C
1924	9.3 C	-0.68 C
1925	9.5 C	-0.54 C
1926	10.0 C	-0.04 C
1927	9.5 C	-0.53 C
1928	10.2 C	+0.16 C
1929	9.4 C	-0.63 C
1930	10.5 C	+0.51 C
1931	9.2 C	-0.83 C
1932	9.9 C	-0.15 C
1933	9.6 C	-0.47 C
1934	10.8 C	+0.81 C
1947	10.4 C	+0.42 C
1948	10.5 C	+0.45 C
1949	10.7 C	+0.63 C
1950	10.2 C	+0.22 C
1951	10.4 C	+0.37 C
1952	10.0 C	-0.07 C
1953	10.5 C	+0.50 C
1954	9.7 C	-0.28 C
1955	9.7 C	-0.31 C
1956	8.8 C	-1.23 C
1957	10.5 C	+0.50 C
1958	10.2 C	+0.15 C
1959	11.1 C	+1.08 C
1960	10.3 C	+0.28 C
1961	10.8 C	+0.76 C
1962	9.0 C	-1.00 C
1963	8.8 C	-1.20 C
1964	10.1 C	+0.05 C
1965	9.5 C	-0.57 C
1966	10.5 C	+0.48 C
1967	10.4 C	+0.36 C
1968	9.7 C	-0.35 C
1969	9.8 C	-0.21 C
1970	9.8 C	-0.27 C
1971	10.0 C	-0.07 C
1972	9.5 C	-0.51 C
1973	10.1 C	+0.11 C
1974	10.6 C	+0.62 C
1975	10.6 C	+0.60 C
1976	10.4 C	+0.37 C
1977	10.3 C	+0.31 C
1978	9.4 C	-0.65 C
1979	9.6 C	-0.42 C
1980	9.4 C	-0.63 C
1981	10.0 C	-0.03 C
1982	10.5 C	+0.52 C
1983	10.7 C	+0.66 C
1984	9.9 C	-0.13 C
1985	9.3 C	-0.74 C
1986	9.8 C	-0.20 C
1987	9.6 C	-0.43 C
1988	11.0 C	+0.96 C
1989	11.2 C	+1.16 C
1990	11.2 C	+1.14 C
1991	10.2 C	+0.17 C
1992	10.9 C	+0.88 C
1993	10.3 C	+0.29 C
1994	11.4 C	+1.39 C
1995	11.1 C	+1.10 C
1997	10.8 C	+0.81 C
1998	10.6 C	+0.59 C

The annual mean temperature here has risen by 0.1 C (0.1 to 0.2) per decade over 1908 to 1998. In Fahrenheit: 0.2 F (0.1 to 0.3) per decade. The slope is a straight line fitted to 78 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Trier
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.1 C (0.1 to 0.2) per decade	0.2 F (0.1 to 0.3) per decade	1908 to 1998	78	Rise
Mean daily maximum	0.02 C (-0.04 to 0.08) per decade	0.03 F (-0.08 to 0.15) per decade	1908 to 1998	78	Not clearly different from zero
Mean daily minimum	0.2 C (0.1 to 0.2) per decade	0.3 F (0.3 to 0.4) per decade	1908 to 1998	78	Rise

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1907 to 1999

Yearly extremes at Trier: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	38.0 C (100.4 F)	1947	33.1 C (91.6 F)	81
Coldest night (TNn)	-19.3 C (-2.7 F)	1929	-11.7 C (10.9 F)	81
Wettest day (Rx1day)	71.1 mm (2.8 in)	1929	32.8 mm (1.3 in)	81
Wettest five days (Rx5day)	112.7 mm (4.4 in)	1923	60.5 mm (2.4 in)	81
Longest dry spell (CDD)	47 days	1908	20 days	81

Hottest day (TXx)

The hottest day of the year at Trier, 1907 to 1999. The record is 38.0 C (100.4 F) in 1947, marked on the chart; the median year is 33.1 C (91.6 F).

Hottest day (TXx) at Trier by year
Year	Hottest day (TXx)
1907	32.1 C (89.8 F)
1908	32.7 C (90.9 F)
1909	32.3 C (90.1 F)
1910	30.6 C (87.1 F)
1911	37.0 C (98.6 F)
1912	33.5 C (92.3 F)
1913	30.5 C (86.9 F)
1914	32.5 C (90.5 F)
1915	34.0 C (93.2 F)
1916	30.5 C (86.9 F)
1917	34.1 C (93.4 F)
1918	34.5 C (94.1 F)
1919	34.4 C (93.9 F)
1920	30.9 C (87.6 F)
1921	37.2 C (99.0 F)
1922	34.5 C (94.1 F)
1923	34.7 C (94.5 F)
1924	32.4 C (90.3 F)
1925	34.3 C (93.7 F)
1926	31.6 C (88.9 F)
1927	31.3 C (88.3 F)
1928	34.8 C (94.6 F)
1929	34.8 C (94.6 F)
1930	33.9 C (93.0 F)
1931	33.0 C (91.4 F)
1932	35.5 C (95.9 F)
1933	35.2 C (95.4 F)
1934	32.6 C (90.7 F)
1947	38.0 C (100.4 F)
1948	32.9 C (91.2 F)
1949	36.4 C (97.5 F)
1950	32.3 C (90.1 F)
1951	31.1 C (88.0 F)
1952	37.1 C (98.8 F)
1953	32.1 C (89.8 F)
1954	32.2 C (90.0 F)
1955	32.5 C (90.5 F)
1956	32.1 C (89.8 F)
1957	37.5 C (99.5 F)
1958	30.1 C (86.2 F)
1959	36.2 C (97.2 F)
1960	31.5 C (88.7 F)
1961	33.1 C (91.6 F)
1962	31.6 C (88.9 F)
1963	31.4 C (88.5 F)
1964	36.2 C (97.2 F)
1965	31.0 C (87.8 F)
1966	33.4 C (92.1 F)
1967	32.0 C (89.6 F)
1968	33.2 C (91.8 F)
1969	33.5 C (92.3 F)
1970	31.0 C (87.8 F)
1971	32.9 C (91.2 F)
1972	33.4 C (92.1 F)
1973	33.0 C (91.4 F)
1974	34.5 C (94.1 F)
1975	33.6 C (92.5 F)
1976	35.6 C (96.1 F)
1977	32.4 C (90.3 F)
1978	33.0 C (91.4 F)
1979	31.8 C (89.2 F)
1980	31.4 C (88.5 F)
1981	31.2 C (88.2 F)
1982	33.2 C (91.8 F)
1983	35.4 C (95.7 F)
1984	33.1 C (91.6 F)
1985	32.5 C (90.5 F)
1986	35.2 C (95.4 F)
1987	32.2 C (90.0 F)
1988	31.0 C (87.8 F)
1989	34.1 C (93.4 F)
1990	34.9 C (94.8 F)
1991	35.2 C (95.4 F)
1992	35.5 C (95.9 F)
1993	30.8 C (87.4 F)
1994	35.4 C (95.7 F)
1995	37.0 C (98.6 F)
1996	33.5 C (92.3 F)
1997	34.2 C (93.6 F)
1998	36.7 C (98.1 F)
1999	14.5 C (58.1 F)

Coldest night (TNn)

The coldest night of the year at Trier, 1907 to 1999. The record is -19.3 C (-2.7 F) in 1929, marked on the chart; the median year is -11.7 C (10.9 F).

Coldest night (TNn) at Trier by year
Year	Coldest night (TNn)
1907	-6.9 C (19.6 F)
1908	-15.5 C (4.1 F)
1909	-14.2 C (6.4 F)
1910	-9.4 C (15.1 F)
1911	-9.6 C (14.7 F)
1912	-13.8 C (7.2 F)
1913	-9.7 C (14.5 F)
1914	-14.7 C (5.5 F)
1915	-13.1 C (8.4 F)
1916	-7.3 C (18.9 F)
1917	-18.6 C (-1.5 F)
1918	-15.6 C (3.9 F)
1919	-14.1 C (6.6 F)
1920	-9.4 C (15.1 F)
1921	-14.3 C (6.3 F)
1922	-16.8 C (1.8 F)
1923	-13.3 C (8.1 F)
1924	-10.7 C (12.7 F)
1925	-16.1 C (3.0 F)
1926	-9.8 C (14.4 F)
1927	-17.2 C (1.0 F)
1928	-8.0 C (17.6 F)
1929	-19.3 C (-2.7 F)
1930	-7.4 C (18.7 F)
1931	-11.6 C (11.1 F)
1932	-11.4 C (11.5 F)
1933	-13.5 C (7.7 F)
1934	-10.4 C (13.3 F)
1947	-16.3 C (2.7 F)
1948	-11.9 C (10.6 F)
1949	-9.8 C (14.4 F)
1950	-12.9 C (8.8 F)
1951	-6.7 C (19.9 F)
1952	-10.3 C (13.5 F)
1953	-14.1 C (6.6 F)
1954	-15.1 C (4.8 F)
1955	-12.8 C (9.0 F)
1956	-19.0 C (-2.2 F)
1957	-10.8 C (12.6 F)
1958	-9.7 C (14.5 F)
1959	-6.8 C (19.8 F)
1960	-14.4 C (6.1 F)
1961	-10.5 C (13.1 F)
1962	-11.9 C (10.6 F)
1963	-16.9 C (1.6 F)
1964	-11.0 C (12.2 F)
1965	-9.0 C (15.8 F)
1966	-13.6 C (7.5 F)
1967	-10.8 C (12.6 F)
1968	-16.0 C (3.2 F)
1969	-10.5 C (13.1 F)
1970	-15.0 C (5.0 F)
1971	-15.0 C (5.0 F)
1972	-11.5 C (11.3 F)
1973	-11.8 C (10.8 F)
1974	-4.2 C (24.4 F)
1975	-9.2 C (15.4 F)
1976	-16.9 C (1.6 F)
1977	-7.4 C (18.7 F)
1978	-10.6 C (12.9 F)
1979	-18.3 C (-0.9 F)
1980	-11.1 C (12.0 F)
1981	-13.1 C (8.4 F)
1982	-14.5 C (5.9 F)
1983	-8.6 C (16.5 F)
1984	-7.5 C (18.5 F)
1985	-14.4 C (6.1 F)
1986	-13.5 C (7.7 F)
1987	-15.4 C (4.3 F)
1988	-9.4 C (15.1 F)
1989	-8.2 C (17.2 F)
1990	-7.1 C (19.2 F)
1991	-13.4 C (7.9 F)
1992	-9.1 C (15.6 F)
1993	-11.1 C (12.0 F)
1994	-9.1 C (15.6 F)
1995	-9.3 C (15.3 F)
1996	-12.9 C (8.8 F)
1997	-14.2 C (6.4 F)
1998	-11.7 C (10.9 F)
1999	-6.5 C (20.3 F)

Wettest day (Rx1day)

The wettest day of the year at Trier, 1907 to 1999. The record is 71.1 mm (2.8 in) in 1929, marked on the chart; the median year is 32.8 mm (1.3 in).

Wettest day (Rx1day) at Trier by year
Year	Wettest day (Rx1day)
1907	27.2 mm (1.1 in)
1908	33.2 mm (1.3 in)
1909	24.8 mm (1.0 in)
1910	33.4 mm (1.3 in)
1911	24.3 mm (1.0 in)
1912	18.7 mm (0.7 in)
1913	34.3 mm (1.4 in)
1914	22.8 mm (0.9 in)
1915	21.9 mm (0.9 in)
1916	27.8 mm (1.1 in)
1917	36.5 mm (1.4 in)
1918	31.5 mm (1.2 in)
1919	24.9 mm (1.0 in)
1920	45.2 mm (1.8 in)
1921	23.9 mm (0.9 in)
1922	36.1 mm (1.4 in)
1923	34.2 mm (1.3 in)
1924	25.4 mm (1.0 in)
1925	27.6 mm (1.1 in)
1926	30.8 mm (1.2 in)
1927	56.9 mm (2.2 in)
1928	33.0 mm (1.3 in)
1929	71.1 mm (2.8 in)
1930	48.5 mm (1.9 in)
1931	56.7 mm (2.2 in)
1932	32.8 mm (1.3 in)
1933	39.4 mm (1.6 in)
1934	22.5 mm (0.9 in)
1947	24.5 mm (1.0 in)
1948	21.3 mm (0.8 in)
1949	45.9 mm (1.8 in)
1950	29.5 mm (1.2 in)
1951	24.8 mm (1.0 in)
1952	29.8 mm (1.2 in)
1953	21.1 mm (0.8 in)
1954	28.1 mm (1.1 in)
1955	35.0 mm (1.4 in)
1956	34.4 mm (1.4 in)
1957	37.8 mm (1.5 in)
1958	27.7 mm (1.1 in)
1959	41.0 mm (1.6 in)
1960	29.4 mm (1.2 in)
1961	33.9 mm (1.3 in)
1962	31.4 mm (1.2 in)
1963	26.8 mm (1.1 in)
1964	33.0 mm (1.3 in)
1965	30.2 mm (1.2 in)
1966	38.2 mm (1.5 in)
1967	44.8 mm (1.8 in)
1968	30.0 mm (1.2 in)
1969	19.2 mm (0.8 in)
1970	45.0 mm (1.8 in)
1971	41.4 mm (1.6 in)
1972	41.2 mm (1.6 in)
1973	29.8 mm (1.2 in)
1974	45.3 mm (1.8 in)
1975	63.7 mm (2.5 in)
1976	32.1 mm (1.3 in)
1977	33.7 mm (1.3 in)
1978	23.4 mm (0.9 in)
1979	31.6 mm (1.2 in)
1980	52.5 mm (2.1 in)
1981	40.1 mm (1.6 in)
1982	27.8 mm (1.1 in)
1983	26.0 mm (1.0 in)
1984	36.4 mm (1.4 in)
1985	33.6 mm (1.3 in)
1986	30.6 mm (1.2 in)
1987	25.3 mm (1.0 in)
1988	27.9 mm (1.1 in)
1989	44.1 mm (1.7 in)
1990	36.5 mm (1.4 in)
1991	21.4 mm (0.8 in)
1992	35.2 mm (1.4 in)
1993	36.1 mm (1.4 in)
1994	52.0 mm (2.0 in)
1995	49.6 mm (2.0 in)
1996	39.9 mm (1.6 in)
1997	28.5 mm (1.1 in)
1998	38.3 mm (1.5 in)
1999	9.3 mm (0.37 in)

Wettest five days (Rx5day)

The wettest five days of the year at Trier, 1907 to 1999. The record is 112.7 mm (4.4 in) in 1923, marked on the chart; the median year is 60.5 mm (2.4 in).

Wettest five days (Rx5day) at Trier by year
Year	Wettest five days (Rx5day)
1907	48.4 mm (1.9 in)
1908	71.6 mm (2.8 in)
1909	59.9 mm (2.4 in)
1910	70.8 mm (2.8 in)
1911	43.2 mm (1.7 in)
1912	43.0 mm (1.7 in)
1913	59.2 mm (2.3 in)
1914	47.5 mm (1.9 in)
1915	49.4 mm (1.9 in)
1916	66.3 mm (2.6 in)
1917	70.8 mm (2.8 in)
1918	51.8 mm (2.0 in)
1919	52.6 mm (2.1 in)
1920	70.7 mm (2.8 in)
1921	43.9 mm (1.7 in)
1922	68.6 mm (2.7 in)
1923	112.7 mm (4.4 in)
1924	73.1 mm (2.9 in)
1925	80.0 mm (3.1 in)
1926	92.5 mm (3.6 in)
1927	72.9 mm (2.9 in)
1928	47.3 mm (1.9 in)
1929	93.9 mm (3.7 in)
1930	89.5 mm (3.5 in)
1931	106.0 mm (4.2 in)
1932	67.9 mm (2.7 in)
1933	46.9 mm (1.8 in)
1934	42.4 mm (1.7 in)
1947	68.0 mm (2.7 in)
1948	56.7 mm (2.2 in)
1949	55.4 mm (2.2 in)
1950	62.0 mm (2.4 in)
1951	44.1 mm (1.7 in)
1952	60.5 mm (2.4 in)
1953	34.6 mm (1.4 in)
1954	41.0 mm (1.6 in)
1955	61.1 mm (2.4 in)
1956	56.7 mm (2.2 in)
1957	43.2 mm (1.7 in)
1958	54.2 mm (2.1 in)
1959	42.1 mm (1.7 in)
1960	47.9 mm (1.9 in)
1961	81.7 mm (3.2 in)
1962	55.0 mm (2.2 in)
1963	53.7 mm (2.1 in)
1964	86.9 mm (3.4 in)
1965	49.3 mm (1.9 in)
1966	58.3 mm (2.3 in)
1967	69.1 mm (2.7 in)
1968	60.3 mm (2.4 in)
1969	45.7 mm (1.8 in)
1970	83.8 mm (3.3 in)
1971	54.4 mm (2.1 in)
1972	61.8 mm (2.4 in)
1973	51.4 mm (2.0 in)
1974	61.7 mm (2.4 in)
1975	72.3 mm (2.8 in)
1976	69.6 mm (2.7 in)
1977	63.1 mm (2.5 in)
1978	54.7 mm (2.2 in)
1979	63.7 mm (2.5 in)
1980	72.2 mm (2.8 in)
1981	84.4 mm (3.3 in)
1982	50.4 mm (2.0 in)
1983	58.3 mm (2.3 in)
1984	74.0 mm (2.9 in)
1985	43.8 mm (1.7 in)
1986	68.0 mm (2.7 in)
1987	72.3 mm (2.8 in)
1988	45.5 mm (1.8 in)
1989	69.3 mm (2.7 in)
1990	68.1 mm (2.7 in)
1991	53.4 mm (2.1 in)
1992	66.7 mm (2.6 in)
1993	82.9 mm (3.3 in)
1994	69.3 mm (2.7 in)
1995	101.5 mm (4.0 in)
1996	46.3 mm (1.8 in)
1997	51.5 mm (2.0 in)
1998	86.7 mm (3.4 in)
1999	27.7 mm (1.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at Trier, 1907 to 1999. The record is 47 days in 1908, marked on the chart; the median year is 20 days.

Longest dry spell (CDD) at Trier by year
Year	Longest dry spell (CDD)
1907	15 days
1908	47 days
1909	17 days
1910	26 days
1911	29 days
1912	24 days
1913	17 days
1914	19 days
1915	18 days
1916	24 days
1917	32 days
1918	18 days
1919	32 days
1920	26 days
1921	31 days
1922	13 days
1923	17 days
1924	20 days
1925	18 days
1926	21 days
1927	14 days
1928	24 days
1929	33 days
1930	19 days
1931	19 days
1932	26 days
1933	32 days
1934	24 days
1947	17 days
1948	31 days
1949	36 days
1950	13 days
1951	29 days
1952	22 days
1953	36 days
1954	18 days
1955	15 days
1956	18 days
1957	15 days
1958	25 days
1959	38 days
1960	15 days
1961	19 days
1962	27 days
1963	17 days
1964	15 days
1965	13 days
1966	16 days
1967	14 days
1968	21 days
1969	36 days
1970	14 days
1971	19 days
1972	33 days
1973	19 days
1974	27 days
1975	19 days
1976	28 days
1977	20 days
1978	23 days
1979	15 days
1980	27 days
1981	16 days
1982	17 days
1983	26 days
1984	20 days
1985	23 days
1986	30 days
1987	30 days
1988	17 days
1989	33 days
1990	21 days
1991	32 days
1992	14 days
1993	21 days
1994	18 days
1995	14 days
1996	17 days
1997	23 days
1998	27 days
1999	6 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

78 years with a frost

Across 78 years with a frost, the median last spring frost at Trier falls on 20 April and the median first autumn frost on 27 October, which leaves a median of 189 days between them.

In 1968 to 1998 the median growing season was 201 days. That is 23 days more than in 1908 to 1949.

Fitted over all years, the growing season changes by +3.5 days per decade at this station.

Frost dates and growing season at Trier
Measure	Median, all years	Earliest period (1908 to 1949)	Recent period (1968 to 1998)	Recent against earliest	Fitted trend
Last spring frost	20 April	28 April	17 April	11 days earlier	-2.0 days per decade
First autumn frost	27 October	20 October	3 November	14 days later	+1.5 days per decade
Growing days	189 days	178 days	201 days	23 days more	+3.5 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

78 years, 1908 to 1998

A day with at least 32.1 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 69.3 mm (2.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Trier: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	32.1 mm (1.3 in)
5 years	41.2 mm (1.6 in)
10 years	47.5 mm (1.9 in)
25 years	55.9 mm (2.2 in)
50 years	62.5 mm (2.5 in)
100 years	69.3 mm (2.7 in)	Longer than the 78 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 78 years of values from 1908 to 1998.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 71.1 mm (2.8 in) in 1929; 63.7 mm (2.5 in) in 1975; 56.9 mm (2.2 in) in 1927.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Download the Data

Data for Trier standing records by year: CSV or JSON. Field meanings are on the data page.
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). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).