Mayen Weather Records (GME00125830)

Record envelope, standing records and threshold days for Mayen (GME00125830), Germany, with 72 years of record.

Key Facts for Mayen

Mayen (GME00125830) is a weather station in Germany at 50.33 latitude and 7.23 longitude, 230 m (755 ft) above sea level.
The station reports from 1931 to 2002, 72 years of record.
1,464 records set at Mayen still stand.
Records are tracked for tmax, tmin, prcp, snwd: an element needs 30 years of data to be eligible.
Mayen set a daily record high maximum temperature of 10.7 C (51.3 F) on 31 December 2002.

About the Station

Location: Germany, 50.33 latitude, 7.23 longitude.
Elevation: 230 m (755 ft).
Period of record: 1931 to 2002, 72 years.
Eligible elements: tmax, tmin, prcp, snwd.

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 Mayen. 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 Mayen, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	14.0 C (57.2 F)	-21.0 C (-5.8 F)	n/a	n/a
Feb	19.2 C (66.6 F)	-18.5 C (-1.3 F)	n/a	n/a
Mar	24.1 C (75.4 F)	-14.9 C (5.2 F)	n/a	n/a
Apr	29.1 C (84.4 F)	-7.9 C (17.8 F)	n/a	n/a
May	30.7 C (87.3 F)	-2.2 C (28.0 F)	n/a	n/a
Jun	34.5 C (94.1 F)	0.4 C (32.7 F)	n/a	n/a
Jul	35.9 C (96.6 F)	4.0 C (39.2 F)	n/a	n/a
Aug	37.5 C (99.5 F)	2.7 C (36.9 F)	n/a	n/a
Sep	33.4 C (92.1 F)	-0.2 C (31.6 F)	n/a	n/a
Oct	28.1 C (82.6 F)	-7.5 C (18.5 F)	n/a	n/a
Nov	18.1 C (64.6 F)	-12.7 C (9.1 F)	n/a	n/a
Dec	15.2 C (59.4 F)	-16.1 C (3.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Mayen still stand. 1963 holds the most, with 61.

Standing records at Mayen by the year they were set
Year set	Standing records
1961	55
1962	54
1963	61
1964	36
1965	29
1966	36
1967	25
1968	29
1969	38
1970	14
1971	32
1972	40
1973	24
1974	32
1975	23
1976	53
1977	24
1978	25
1979	33
1980	41
1981	46
1982	17
1983	36
1984	27
1985	45
1986	50
1987	38
1988	12
1989	36
1990	34
1991	27
1992	29
1993	48
1994	39
1995	36
1996	37
1997	39
1998	39
1999	29
2000	31
2001	18
2002	47

All-Time Record Progression

2 new records

2 all-time records were set at Mayen between 21 July 1972 and 1 January 1997. Each dot is a new record.

When Mayen set new all-time records
Date	Kind	Detail
1972-07-21	Record daily precipitation	Record daily precipitation 62.0 mm (2.4 in)
1997-01-01	Record low maximum temperature	Record low maximum temperature -11.7 C (10.9 F)

Wettest Day of Each Month

Jul: 62.0 mm (2.4 in)

The wettest day on record for each calendar month at Mayen. The most was 62.0 mm (2.4 in) on 21 July 1972.

Record daily precipitation for each month at Mayen
Month	Record daily precipitation (mm)	Date
Jan	32.8 mm (1.3 in)	22 January 1995
Feb	31.0 mm (1.2 in)	12 February 2002
Mar	32.3 mm (1.3 in)	17 March 1940
Apr	48.3 mm (1.9 in)	17 April 1936
May	58.5 mm (2.3 in)	19 May 1949
Jun	52.9 mm (2.1 in)	20 June 1992
Jul	62.0 mm (2.4 in)	21 July 1972
Aug	44.0 mm (1.7 in)	6 August 1963
Sep	43.0 mm (1.7 in)	18 September 1982
Oct	55.4 mm (2.2 in)	7 October 1982
Nov	39.3 mm (1.5 in)	3 November 1977
Dec	34.7 mm (1.4 in)	27 December 1947

Period of Record Coverage

1961 to 2002

42 years of record at Mayen, 1961 to 2002. 2 years have data for under 90 percent of days and are left out of rankings: 1963, 1990.

Days with data per year at Mayen
Year	Days with data	Share of year	Complete
1961	364	100%	Yes
1962	362	99%	Yes
1963	304	83%	No
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	304	83%	No
1991	365	100%	Yes
1992	366	100%	Yes
1993	365	100%	Yes
1994	365	100%	Yes
1995	365	100%	Yes
1996	366	100%	Yes
1997	365	100%	Yes
1998	365	100%	Yes
1999	365	100%	Yes
2000	366	100%	Yes
2001	365	100%	Yes
2002	365	100%	Yes

Latest Records

Latest records at Mayen
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 December 2002	Mayen, DE	daily high max	10.7 C (51.3 F)	0.1 C (0.2 F)	4 years	5 of 100 (Routine)
30 December 2002	Mayen, DE	daily high min	10.3 C (50.5 F)	1.9 C (3.4 F)	15 years	11 of 100 (Routine)
30 December 2002	Mayen, DE	daily high max	12.5 C (54.5 F)	0.5 C (0.9 F)	12 years	8 of 100 (Routine)
27 December 2002	Mayen, DE	daily high max	11.6 C (52.9 F)	0.7 C (1.3 F)	8 years	7 of 100 (Routine)
27 December 2002	Mayen, DE	daily high min	7.2 C (45.0 F)	0.2 C (0.4 F)	4 years	5 of 100 (Routine)
11 December 2002	Mayen, DE	daily low min	-11.5 C (11.3 F)	1.5 C (2.7 F)	35 years	17 of 100 (Routine)
10 December 2002	Mayen, DE	daily low max	-2.9 C (26.8 F)	0.3 C (0.5 F)	39 years	15 of 100 (Routine)
9 December 2002	Mayen, DE	daily low max	-3.4 C (25.9 F)	1.5 C (2.7 F)	15 years	11 of 100 (Routine)
29 November 2002	Mayen, DE	daily high min	6.3 C (43.3 F)	0.3 C (0.5 F)	25 years	11 of 100 (Routine)
25 October 2002	Mayen, DE	daily rain	16.1 mm (0.6 in)	0.8 mm (0.03 in)	36 years	18 of 100 (Routine)
9 October 2002	Mayen, DE	daily low min	-1.4 C (29.5 F)	2.5 C (4.5 F)	31 years	19 of 100 (Routine)
26 September 2002	Mayen, DE	daily low max	12.4 C (54.3 F)	0.2 C (0.4 F)	17 years	9 of 100 (Routine)
25 September 2002	Mayen, DE	daily low min	2.2 C (36.0 F)	0.3 C (0.5 F)	4 years	5 of 100 (Routine)
31 August 2002	Mayen, DE	daily high min	14.9 C (58.8 F)	0.2 C (0.4 F)	24 years	11 of 100 (Routine)
29 August 2002	Mayen, DE	daily high min	16.9 C (62.4 F)	1.9 C (3.4 F)	33 years	20 of 100 (Routine)
28 August 2002	Mayen, DE	daily high min	17.5 C (63.5 F)	2.5 C (4.5 F)	28 years	20 of 100 (Routine)
8 August 2002	Mayen, DE	daily rain	38.4 mm (1.5 in)	22.8 mm (0.9 in)	63 years	64 of 100 (Major)
31 July 2002	Mayen, DE	daily rain	44.1 mm (1.7 in)	26.2 mm (1.0 in)	41 years	59 of 100 (Notable)
29 July 2002	Mayen, DE	daily high max	31.7 C (89.1 F)	1.0 C (1.8 F)	24 years	13 of 100 (Routine)
10 July 2002	Mayen, DE	daily rain	28.4 mm (1.1 in)	4.7 mm (0.19 in)	40 years	26 of 100 (Routine)

Climate Trend

40 complete years, 1961 to 2002

One stripe for each of 40 complete years at Mayen, 1961 to 2002. Blue stripes are years cooler than the station's own mean of 9.3 C (48.7 F); red stripes are warmer. The coolest year was 1962, at 7.6 C (45.7 F), and the warmest was 2000, at 10.4 C (50.6 F). The strongest colour marks a difference of 1.7 C (3.1 F).

Annual mean temperature at Mayen as warming stripes, 1961 to 2002
Year	Annual mean temperature	Difference from the station mean
1961	9.4 C	+0.16 C
1962	7.6 C	-1.65 C
1964	8.8 C	-0.47 C
1965	8.3 C	-0.96 C
1966	9.4 C	+0.17 C
1967	9.6 C	+0.30 C
1968	8.8 C	-0.50 C
1969	8.8 C	-0.45 C
1970	8.7 C	-0.54 C
1971	9.2 C	-0.04 C
1972	8.2 C	-1.06 C
1973	9.4 C	+0.14 C
1974	9.6 C	+0.30 C
1975	9.8 C	+0.51 C
1976	9.8 C	+0.49 C
1977	9.6 C	+0.34 C
1978	8.8 C	-0.52 C
1979	8.6 C	-0.68 C
1980	8.8 C	-0.44 C
1981	9.2 C	-0.11 C
1982	9.8 C	+0.50 C
1983	9.8 C	+0.54 C
1984	9.0 C	-0.32 C
1985	8.4 C	-0.84 C
1986	8.8 C	-0.48 C
1987	8.5 C	-0.73 C
1988	10.1 C	+0.78 C
1989	10.2 C	+0.91 C
1991	8.9 C	-0.41 C
1992	9.8 C	+0.53 C
1993	9.2 C	-0.03 C
1994	10.4 C	+1.09 C
1995	9.7 C	+0.47 C
1996	8.0 C	-1.26 C
1997	9.5 C	+0.25 C
1998	9.7 C	+0.43 C
1999	10.1 C	+0.83 C
2000	10.4 C	+1.09 C
2001	9.8 C	+0.53 C
2002	10.2 C	+0.96 C

The annual mean temperature here has risen by 0.3 C (0.1 to 0.4) per decade over 1961 to 2002. In Fahrenheit: 0.5 F (0.2 to 0.8) per decade. The slope is a straight line fitted to 40 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Mayen
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.3 C (0.1 to 0.4) per decade	0.5 F (0.2 to 0.8) per decade	1961 to 2002	40	Rise
Mean daily maximum	0.3 C (0.1 to 0.5) per decade	0.5 F (0.2 to 0.9) per decade	1961 to 2002	40	Rise
Mean daily minimum	0.2 C (0.1 to 0.4) per decade	0.4 F (0.1 to 0.7) per decade	1961 to 2002	40	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

1931 to 2002

Yearly extremes at Mayen: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	37.5 C (99.5 F)	1986	32.5 C (90.5 F)	42
Coldest night (TNn)	-21.0 C (-5.8 F)	1963	-13.7 C (7.3 F)	42
Wettest day (Rx1day)	62.0 mm (2.4 in)	1972	30.4 mm (1.2 in)	70
Wettest five days (Rx5day)	84.8 mm (3.3 in)	1972	50.7 mm (2.0 in)	70
Longest dry spell (CDD)	54 days	1949	22 days	70

Hottest day (TXx)

The hottest day of the year at Mayen, 1931 to 2002. The record is 37.5 C (99.5 F) in 1986, marked on the chart; the median year is 32.5 C (90.5 F).

Hottest day (TXx) at Mayen by year
Year	Hottest day (TXx)
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	31.4 C (88.5 F)
1962	30.5 C (86.9 F)
1963	30.5 C (86.9 F)
1964	35.9 C (96.6 F)
1965	29.3 C (84.7 F)
1966	33.0 C (91.4 F)
1967	31.4 C (88.5 F)
1968	31.5 C (88.7 F)
1969	33.0 C (91.4 F)
1970	31.1 C (88.0 F)
1971	32.5 C (90.5 F)
1972	33.1 C (91.6 F)
1973	33.4 C (92.1 F)
1974	34.0 C (93.2 F)
1975	32.3 C (90.1 F)
1976	34.9 C (94.8 F)
1977	31.3 C (88.3 F)
1978	31.5 C (88.7 F)
1979	29.6 C (85.3 F)
1980	31.6 C (88.9 F)
1981	31.9 C (89.4 F)
1982	32.3 C (90.1 F)
1983	33.5 C (92.3 F)
1984	32.8 C (91.0 F)
1985	31.7 C (89.1 F)
1986	37.5 C (99.5 F)
1987	31.6 C (88.9 F)
1988	30.7 C (87.3 F)
1989	32.1 C (89.8 F)
1990	35.5 C (95.9 F)
1991	33.6 C (92.5 F)
1992	34.6 C (94.3 F)
1993	30.0 C (86.0 F)
1994	34.5 C (94.1 F)
1995	34.6 C (94.3 F)
1996	32.5 C (90.5 F)
1997	32.7 C (90.9 F)
1998	36.6 C (97.9 F)
1999	32.8 C (91.0 F)
2000	32.5 C (90.5 F)
2001	34.8 C (94.6 F)
2002	34.5 C (94.1 F)

Coldest night (TNn)

The coldest night of the year at Mayen, 1931 to 2002. The record is -21.0 C (-5.8 F) in 1963, marked on the chart; the median year is -13.7 C (7.3 F).

Coldest night (TNn) at Mayen by year
Year	Coldest night (TNn)
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	-13.5 C (7.7 F)
1962	-15.0 C (5.0 F)
1963	-21.0 C (-5.8 F)
1964	-12.6 C (9.3 F)
1965	-12.7 C (9.1 F)
1966	-17.8 C (0.0 F)
1967	-13.0 C (8.6 F)
1968	-18.4 C (-1.1 F)
1969	-11.7 C (10.9 F)
1970	-14.9 C (5.2 F)
1971	-14.9 C (5.2 F)
1972	-15.1 C (4.8 F)
1973	-14.1 C (6.6 F)
1974	-5.0 C (23.0 F)
1975	-11.2 C (11.8 F)
1976	-16.2 C (2.8 F)
1977	-8.2 C (17.2 F)
1978	-14.8 C (5.4 F)
1979	-17.7 C (0.1 F)
1980	-11.3 C (11.7 F)
1981	-12.0 C (10.4 F)
1982	-17.8 C (0.0 F)
1983	-10.1 C (13.8 F)
1984	-9.2 C (15.4 F)
1985	-18.0 C (-0.4 F)
1986	-17.1 C (1.2 F)
1987	-16.2 C (2.8 F)
1988	-9.8 C (14.4 F)
1989	-8.4 C (16.9 F)
1990	-7.0 C (19.4 F)
1991	-16.0 C (3.2 F)
1992	-11.5 C (11.3 F)
1993	-15.5 C (4.1 F)
1994	-10.5 C (13.1 F)
1995	-14.0 C (6.8 F)
1996	-16.1 C (3.0 F)
1997	-21.0 C (-5.8 F)
1998	-13.3 C (8.1 F)
1999	-12.1 C (10.2 F)
2000	-10.8 C (12.6 F)
2001	-12.5 C (9.5 F)
2002	-14.7 C (5.5 F)

Wettest day (Rx1day)

The wettest day of the year at Mayen, 1931 to 2002. The record is 62.0 mm (2.4 in) in 1972, marked on the chart; the median year is 30.4 mm (1.2 in).

Wettest day (Rx1day) at Mayen by year
Year	Wettest day (Rx1day)
1931	40.0 mm (1.6 in)
1932	31.1 mm (1.2 in)
1933	29.4 mm (1.2 in)
1934	32.1 mm (1.3 in)
1935	31.6 mm (1.2 in)
1936	48.3 mm (1.9 in)
1937	23.6 mm (0.9 in)
1938	37.9 mm (1.5 in)
1939	22.2 mm (0.9 in)
1940	32.3 mm (1.3 in)
1941	40.5 mm (1.6 in)
1942	30.6 mm (1.2 in)
1943	23.0 mm (0.9 in)
1944	34.5 mm (1.4 in)
1947	40.0 mm (1.6 in)
1948	25.5 mm (1.0 in)
1949	58.5 mm (2.3 in)
1950	29.8 mm (1.2 in)
1951	44.9 mm (1.8 in)
1952	21.8 mm (0.9 in)
1953	41.6 mm (1.6 in)
1954	27.3 mm (1.1 in)
1955	42.0 mm (1.7 in)
1956	29.5 mm (1.2 in)
1957	27.0 mm (1.1 in)
1958	38.1 mm (1.5 in)
1959	21.6 mm (0.9 in)
1960	19.0 mm (0.7 in)
1961	29.2 mm (1.1 in)
1962	23.7 mm (0.9 in)
1963	44.0 mm (1.7 in)
1964	23.6 mm (0.9 in)
1965	20.9 mm (0.8 in)
1966	34.5 mm (1.4 in)
1967	30.2 mm (1.2 in)
1968	30.0 mm (1.2 in)
1969	40.8 mm (1.6 in)
1970	19.0 mm (0.7 in)
1971	21.4 mm (0.8 in)
1972	62.0 mm (2.4 in)
1973	31.8 mm (1.3 in)
1974	21.3 mm (0.8 in)
1975	45.7 mm (1.8 in)
1976	35.6 mm (1.4 in)
1977	39.3 mm (1.5 in)
1978	22.4 mm (0.9 in)
1979	34.1 mm (1.3 in)
1980	27.7 mm (1.1 in)
1981	27.5 mm (1.1 in)
1982	55.4 mm (2.2 in)
1983	40.1 mm (1.6 in)
1984	30.2 mm (1.2 in)
1985	16.8 mm (0.7 in)
1986	38.5 mm (1.5 in)
1987	20.3 mm (0.8 in)
1988	19.0 mm (0.7 in)
1989	26.5 mm (1.0 in)
1990	29.0 mm (1.1 in)
1991	28.0 mm (1.1 in)
1992	52.9 mm (2.1 in)
1993	33.0 mm (1.3 in)
1994	38.0 mm (1.5 in)
1995	32.8 mm (1.3 in)
1996	29.9 mm (1.2 in)
1997	25.0 mm (1.0 in)
1998	34.4 mm (1.4 in)
1999	20.7 mm (0.8 in)
2000	33.2 mm (1.3 in)
2001	18.8 mm (0.7 in)
2002	44.1 mm (1.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Mayen, 1931 to 2002. The record is 84.8 mm (3.3 in) in 1972, marked on the chart; the median year is 50.7 mm (2.0 in).

Wettest five days (Rx5day) at Mayen by year
Year	Wettest five days (Rx5day)
1931	60.6 mm (2.4 in)
1932	43.6 mm (1.7 in)
1933	37.6 mm (1.5 in)
1934	60.0 mm (2.4 in)
1935	45.1 mm (1.8 in)
1936	68.5 mm (2.7 in)
1937	33.8 mm (1.3 in)
1938	64.1 mm (2.5 in)
1939	46.7 mm (1.8 in)
1940	51.4 mm (2.0 in)
1941	52.3 mm (2.1 in)
1942	49.1 mm (1.9 in)
1943	49.9 mm (2.0 in)
1944	57.8 mm (2.3 in)
1947	75.5 mm (3.0 in)
1948	57.7 mm (2.3 in)
1949	63.3 mm (2.5 in)
1950	49.6 mm (2.0 in)
1951	52.4 mm (2.1 in)
1952	60.3 mm (2.4 in)
1953	47.7 mm (1.9 in)
1954	54.8 mm (2.2 in)
1955	46.2 mm (1.8 in)
1956	46.3 mm (1.8 in)
1957	38.3 mm (1.5 in)
1958	55.4 mm (2.2 in)
1959	44.9 mm (1.8 in)
1960	33.7 mm (1.3 in)
1961	58.5 mm (2.3 in)
1962	44.2 mm (1.7 in)
1963	56.0 mm (2.2 in)
1964	46.5 mm (1.8 in)
1965	65.2 mm (2.6 in)
1966	71.9 mm (2.8 in)
1967	37.8 mm (1.5 in)
1968	52.4 mm (2.1 in)
1969	59.1 mm (2.3 in)
1970	43.0 mm (1.7 in)
1971	42.7 mm (1.7 in)
1972	84.8 mm (3.3 in)
1973	41.8 mm (1.6 in)
1974	35.1 mm (1.4 in)
1975	62.8 mm (2.5 in)
1976	42.3 mm (1.7 in)
1977	45.3 mm (1.8 in)
1978	57.6 mm (2.3 in)
1979	58.2 mm (2.3 in)
1980	36.3 mm (1.4 in)
1981	48.6 mm (1.9 in)
1982	70.2 mm (2.8 in)
1983	57.5 mm (2.3 in)
1984	60.1 mm (2.4 in)
1985	36.3 mm (1.4 in)
1986	72.5 mm (2.9 in)
1987	39.5 mm (1.6 in)
1988	37.8 mm (1.5 in)
1989	44.7 mm (1.8 in)
1990	53.4 mm (2.1 in)
1991	49.4 mm (1.9 in)
1992	58.1 mm (2.3 in)
1993	55.9 mm (2.2 in)
1994	40.9 mm (1.6 in)
1995	60.2 mm (2.4 in)
1996	34.2 mm (1.3 in)
1997	43.3 mm (1.7 in)
1998	58.0 mm (2.3 in)
1999	33.7 mm (1.3 in)
2000	62.5 mm (2.5 in)
2001	39.2 mm (1.5 in)
2002	62.1 mm (2.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Mayen, 1931 to 2002. The record is 54 days in 1949, marked on the chart; the median year is 22 days.

Longest dry spell (CDD) at Mayen by year
Year	Longest dry spell (CDD)
1931	35 days
1932	25 days
1933	24 days
1934	25 days
1935	22 days
1936	20 days
1937	19 days
1938	21 days
1939	17 days
1940	15 days
1941	24 days
1942	17 days
1943	18 days
1944	14 days
1947	30 days
1948	35 days
1949	54 days
1950	20 days
1951	29 days
1952	20 days
1953	32 days
1954	28 days
1955	15 days
1956	18 days
1957	15 days
1958	20 days
1959	31 days
1960	15 days
1961	16 days
1962	28 days
1963	23 days
1964	15 days
1965	13 days
1966	17 days
1967	12 days
1968	22 days
1969	42 days
1970	14 days
1971	22 days
1972	32 days
1973	25 days
1974	26 days
1975	22 days
1976	40 days
1977	15 days
1978	24 days
1979	24 days
1980	20 days
1981	20 days
1982	21 days
1983	27 days
1984	20 days
1985	23 days
1986	31 days
1987	13 days
1988	19 days
1989	21 days
1990	19 days
1991	38 days
1992	22 days
1993	22 days
1994	19 days
1995	27 days
1996	29 days
1997	23 days
1998	27 days
1999	27 days
2000	12 days
2001	14 days
2002	21 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

40 years with a frost

Across 40 years with a frost, the median last spring frost at Mayen falls on 21 April and the median first autumn frost on 22 October, which leaves a median of 183 days between them.

Fitted over all years, the growing season changes by -0.1 days per decade at this station.

Frost dates and growing season at Mayen
Measure	Median, all years	Earliest period	Recent period (1972 to 2002)	Recent against earliest	Fitted trend
Last spring frost	21 April	n/a	21 April	n/a	+0.4 days per decade
First autumn frost	22 October	n/a	25 October	n/a	+0.2 days per decade
Growing days	183 days	n/a	183 days	n/a	-0.1 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

69 years, 1931 to 2002

A day with at least 30.7 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 63.2 mm (2.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Mayen: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	30.7 mm (1.2 in)
5 years	39.8 mm (1.6 in)
10 years	45.7 mm (1.8 in)
25 years	52.9 mm (2.1 in)
50 years	58.1 mm (2.3 in)
100 years	63.2 mm (2.5 in)	Longer than the 69 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, 69 years of values from 1931 to 2002.

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: 62.0 mm (2.4 in) in 1972; 58.5 mm (2.3 in) in 1949; 55.4 mm (2.2 in) in 1982.

Station Changes

1 suspected

One change was suspected in the annual mean temperature of Mayen, at 1989. Each is measured against neighbouring stations.

Relative to 5 neighbouring stations, the station's annual mean temperature from 1989 ran 0.2 C (0.3 F) lower than in the years before (likely change).

Suspected changes in the annual mean temperature at Mayen, against neighbouring stations
Year	Shift (C)	Shift (F)	Strength	Neighbours
1989	-0.2	-0.3	likely	5

Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.

Download the Data

Data for Mayen standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Mayen 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).