Koblenz-Horchheim Weather Records (GME00124654)

Record envelope, standing records and threshold days for Koblenz-Horchheim (GME00124654), Germany, with 58 years of record.

Key Facts for Koblenz-Horchheim

Koblenz-Horchheim (GME00124654) is a weather station in Germany at 50.34 latitude and 7.60 longitude, 85 m (279 ft) above sea level.
The station reports from 1951 to 2008, 58 years of record.
1,464 records set at Koblenz-Horchheim still stand.
Records are tracked for tmax, tmin, prcp, snwd: an element needs 30 years of data to be eligible.
Koblenz-Horchheim set a daily record high minimum temperature of 10.0 C (50.0 F) on 21 January 2008.

About the Station

Location: Germany, 50.34 latitude, 7.60 longitude.
Elevation: 85 m (279 ft).
Period of record: 1951 to 2008, 58 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 Koblenz-Horchheim. 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 Koblenz-Horchheim, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	16.1 C (61.0 F)	-18.9 C (-2.0 F)	n/a	n/a
Feb	19.1 C (66.4 F)	-20.6 C (-5.1 F)	n/a	n/a
Mar	25.3 C (77.5 F)	-11.8 C (10.8 F)	n/a	n/a
Apr	30.4 C (86.7 F)	-4.9 C (23.2 F)	n/a	n/a
May	33.8 C (92.8 F)	-0.5 C (31.1 F)	n/a	n/a
Jun	37.4 C (99.3 F)	3.6 C (38.5 F)	n/a	n/a
Jul	37.5 C (99.5 F)	6.5 C (43.7 F)	n/a	n/a
Aug	39.4 C (102.9 F)	6.0 C (42.8 F)	n/a	n/a
Sep	33.9 C (93.0 F)	1.3 C (34.3 F)	n/a	n/a
Oct	27.5 C (81.5 F)	-5.2 C (22.6 F)	n/a	n/a
Nov	20.3 C (68.5 F)	-8.5 C (16.7 F)	n/a	n/a
Dec	17.2 C (63.0 F)	-15.1 C (4.8 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Koblenz-Horchheim still stand. 1956 holds the most, with 57.

Standing records at Koblenz-Horchheim by the year they were set
Year set	Standing records
1951	15
1952	24
1953	21
1954	15
1955	20
1956	57
1957	26
1958	24
1959	16
1960	21
1961	36
1962	39
1963	37
1964	17
1965	26
1966	27
1967	27
1968	30
1969	26
1970	10
1971	25
1972	17
1973	17
1974	30
1975	12
1976	38
1977	15
1978	16
1979	22
1980	27
1981	30
1982	11
1983	28
1984	17
1985	34
1986	37
1987	26
1988	11
1989	31
1990	18
1991	24
1992	19
1993	38
1994	28
1995	18
1996	33
1997	41
1998	32
1999	16
2000	22
2001	20
2002	25
2003	42
2004	22
2005	33
2006	43
2007	28
2008	4

All-Time Record Progression

3 new records

3 all-time records were set at Koblenz-Horchheim between 11 August 1998 and 8 August 2003. Each dot is a new record.

When Koblenz-Horchheim set new all-time records
Date	Kind	Detail
1998-08-11	Record high maximum temperature	Record high maximum temperature 38.0 C (100.4 F)
2003-08-07	Record high maximum temperature	Record high maximum temperature 38.3 C (100.9 F)
2003-08-08	Record high maximum temperature	Record high maximum temperature 39.4 C (102.9 F)

Wettest Day of Each Month

Nov: 76.6 mm (3.0 in)

The wettest day on record for each calendar month at Koblenz-Horchheim. The most was 76.6 mm (3.0 in) on 3 November 1977.

Record daily precipitation for each month at Koblenz-Horchheim
Month	Record daily precipitation (mm)	Date
Jan	26.1 mm (1.0 in)	27 January 2002
Feb	37.0 mm (1.5 in)	12 February 2002
Mar	28.1 mm (1.1 in)	24 March 1957
Apr	35.5 mm (1.4 in)	21 April 1989
May	37.0 mm (1.5 in)	27 May 1964
Jun	56.5 mm (2.2 in)	2 June 1961
Jul	73.2 mm (2.9 in)	13 July 1979
Aug	66.8 mm (2.6 in)	20 August 1969
Sep	41.0 mm (1.6 in)	10 September 1972
Oct	53.4 mm (2.1 in)	7 October 1982
Nov	76.6 mm (3.0 in)	3 November 1977
Dec	32.8 mm (1.3 in)	20 December 1993

Period of Record Coverage

1951 to 2008

58 years of record at Koblenz-Horchheim, 1951 to 2008. 1 years have data for under 90 percent of days and are left out of rankings: 2008.

Days with data per year at Koblenz-Horchheim
Year	Days with data	Share of year	Complete
1951	365	100%	Yes
1952	364	99%	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	365	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	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
2003	365	100%	Yes
2004	366	100%	Yes
2005	365	100%	Yes
2006	365	100%	Yes
2007	365	100%	Yes
2008	31	8%	No

Latest Records

Latest records at Koblenz-Horchheim
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 January 2008	Koblenz-Horchheim, DE	daily high min	10.0 C (50.0 F)	0.3 C (0.5 F)	14 years	9 of 100 (Routine)
20 January 2008	Koblenz-Horchheim, DE	monthly high min	11.6 C (52.9 F)	0.2 C (0.4 F)	5 years	16 of 100 (Routine)
19 January 2008	Koblenz-Horchheim, DE	daily high min	10.8 C (51.4 F)	2.4 C (4.3 F)	0 years	9 of 100 (Routine)
19 January 2008	Koblenz-Horchheim, DE	daily high max	14.5 C (58.1 F)	0.5 C (0.9 F)	0 years	6 of 100 (Routine)
22 December 2007	Koblenz-Horchheim, DE	daily low max (Tie)	-2.4 C (27.7 F)	tie	37 years	4 of 100 (Routine)
3 December 2007	Koblenz-Horchheim, DE	daily rain	8.7 mm (0.34 in)	2.7 mm (0.11 in)	37 years	20 of 100 (Routine)
21 October 2007	Koblenz-Horchheim, DE	daily low max	6.4 C (43.5 F)	1.5 C (2.7 F)	54 years	24 of 100 (Routine)
27 September 2007	Koblenz-Horchheim, DE	daily rain	27.3 mm (1.1 in)	11.2 mm (0.4 in)	54 years	40 of 100 (Notable)
30 August 2007	Koblenz-Horchheim, DE	daily low min	6.6 C (43.9 F)	0.5 C (0.9 F)	49 years	20 of 100 (Routine)
9 August 2007	Koblenz-Horchheim, DE	daily low max	17.0 C (62.6 F)	0.6 C (1.1 F)	20 years	12 of 100 (Routine)
1 August 2007	Koblenz-Horchheim, DE	daily low min (Tie)	8.4 C (47.1 F)	tie	41 years	4 of 100 (Routine)
31 July 2007	Koblenz-Horchheim, DE	daily low min	8.5 C (47.3 F)	0.5 C (0.9 F)	45 years	19 of 100 (Routine)
15 July 2007	Koblenz-Horchheim, DE	daily high max	36.2 C (97.2 F)	2.6 C (4.7 F)	4 years	11 of 100 (Routine)
21 June 2007	Koblenz-Horchheim, DE	daily rain	17.8 mm (0.7 in)	8.4 mm (0.33 in)	22 years	20 of 100 (Routine)
29 May 2007	Koblenz-Horchheim, DE	daily low max	13.2 C (55.8 F)	0.3 C (0.5 F)	45 years	18 of 100 (Routine)
25 May 2007	Koblenz-Horchheim, DE	daily high max	31.0 C (87.8 F)	1.0 C (1.8 F)	53 years	23 of 100 (Routine)
24 May 2007	Koblenz-Horchheim, DE	daily high max	31.1 C (88.0 F)	0.9 C (1.6 F)	53 years	22 of 100 (Routine)
23 May 2007	Koblenz-Horchheim, DE	daily high min	16.6 C (61.9 F)	0.5 C (0.9 F)	53 years	22 of 100 (Routine)
22 May 2007	Koblenz-Horchheim, DE	daily high max	29.4 C (84.9 F)	1.4 C (2.5 F)	40 years	19 of 100 (Routine)
21 May 2007	Koblenz-Horchheim, DE	daily high max (Tie)	29.2 C (84.6 F)	tie	53 years	5 of 100 (Routine)

Climate Trend

57 complete years, 1951 to 2007

One stripe for each of 57 complete years at Koblenz-Horchheim, 1951 to 2007. Blue stripes are years cooler than the station's own mean of 10.7 C (51.3 F); red stripes are warmer. The coolest year was 1956, at 8.9 C (48.1 F), and the warmest was 2007, at 12.0 C (53.5 F). The strongest colour marks a difference of 1.8 C (3.2 F).

Annual mean temperature at Koblenz-Horchheim as warming stripes, 1951 to 2007
Year	Annual mean temperature	Difference from the station mean
1951	11.0 C	+0.26 C
1952	10.3 C	-0.41 C
1953	11.1 C	+0.34 C
1954	9.9 C	-0.83 C
1955	9.7 C	-1.06 C
1956	8.9 C	-1.77 C
1957	10.8 C	+0.06 C
1958	10.7 C	-0.01 C
1959	11.4 C	+0.69 C
1960	10.9 C	+0.18 C
1961	11.2 C	+0.53 C
1962	9.5 C	-1.25 C
1963	9.2 C	-1.50 C
1964	10.5 C	-0.24 C
1965	9.4 C	-1.29 C
1966	10.5 C	-0.21 C
1967	10.4 C	-0.34 C
1968	9.9 C	-0.77 C
1969	10.0 C	-0.67 C
1970	9.9 C	-0.85 C
1971	10.3 C	-0.42 C
1972	10.2 C	-0.53 C
1973	10.7 C	-0.03 C
1974	11.2 C	+0.46 C
1975	11.2 C	+0.45 C
1976	11.2 C	+0.53 C
1977	11.0 C	+0.28 C
1978	10.1 C	-0.64 C
1979	10.0 C	-0.69 C
1980	10.3 C	-0.46 C
1981	10.5 C	-0.19 C
1982	11.1 C	+0.42 C
1983	11.2 C	+0.47 C
1984	10.3 C	-0.38 C
1985	9.6 C	-1.13 C
1986	10.3 C	-0.45 C
1987	9.8 C	-0.88 C
1988	11.3 C	+0.56 C
1989	11.5 C	+0.75 C
1990	11.6 C	+0.86 C
1991	10.5 C	-0.25 C
1992	11.4 C	+0.66 C
1993	10.8 C	+0.05 C
1994	11.9 C	+1.18 C
1995	11.2 C	+0.53 C
1996	9.6 C	-1.15 C
1997	11.2 C	+0.47 C
1998	11.2 C	+0.47 C
1999	11.7 C	+0.97 C
2000	11.9 C	+1.22 C
2001	11.2 C	+0.51 C
2002	11.7 C	+0.99 C
2003	11.7 C	+1.03 C
2004	11.1 C	+0.40 C
2005	11.6 C	+0.92 C
2006	11.8 C	+1.05 C
2007	12.0 C	+1.26 C

The annual mean temperature here has risen by 0.3 C (0.1 to 0.4) per decade over 1951 to 2007. In Fahrenheit: 0.5 F (0.3 to 0.6) per decade. The slope is a straight line fitted to 57 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Koblenz-Horchheim
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 (0.3 to 0.6) per decade	1951 to 2007	57	Rise
Mean daily maximum	0.3 C (0.2 to 0.4) per decade	0.5 F (0.3 to 0.8) per decade	1951 to 2007	57	Rise
Mean daily minimum	0.2 C (0.1 to 0.3) per decade	0.4 F (0.2 to 0.6) per decade	1951 to 2007	57	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

1951 to 2008

Yearly extremes at Koblenz-Horchheim: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	39.4 C (102.9 F)	2003	33.7 C (92.6 F)	58
Coldest night (TNn)	-20.6 C (-5.1 F)	1956	-10.7 C (12.6 F)	58
Wettest day (Rx1day)	76.6 mm (3.0 in)	1977	31.6 mm (1.2 in)	58
Wettest five days (Rx5day)	113.8 mm (4.5 in)	1979	54.0 mm (2.1 in)	58
Longest dry spell (CDD)	42 days	2007	21 days	58

Hottest day (TXx)

The hottest day of the year at Koblenz-Horchheim, 1951 to 2008. The record is 39.4 C (102.9 F) in 2003, marked on the chart; the median year is 33.7 C (92.6 F).

Hottest day (TXx) at Koblenz-Horchheim by year
Year	Hottest day (TXx)
1951	30.6 C (87.1 F)
1952	37.1 C (98.8 F)
1953	32.2 C (90.0 F)
1954	33.0 C (91.4 F)
1955	31.5 C (88.7 F)
1956	29.8 C (85.6 F)
1957	37.5 C (99.5 F)
1958	30.0 C (86.0 F)
1959	37.1 C (98.8 F)
1960	31.0 C (87.8 F)
1961	33.0 C (91.4 F)
1962	32.1 C (89.8 F)
1963	32.1 C (89.8 F)
1964	35.5 C (95.9 F)
1965	30.3 C (86.5 F)
1966	34.2 C (93.6 F)
1967	32.1 C (89.8 F)
1968	31.8 C (89.2 F)
1969	33.9 C (93.0 F)
1970	30.8 C (87.4 F)
1971	33.8 C (92.8 F)
1972	33.8 C (92.8 F)
1973	33.9 C (93.0 F)
1974	36.2 C (97.2 F)
1975	33.7 C (92.7 F)
1976	36.4 C (97.5 F)
1977	33.1 C (91.6 F)
1978	32.4 C (90.3 F)
1979	32.0 C (89.6 F)
1980	32.8 C (91.0 F)
1981	32.0 C (89.6 F)
1982	33.0 C (91.4 F)
1983	33.9 C (93.0 F)
1984	34.0 C (93.2 F)
1985	32.0 C (89.6 F)
1986	34.6 C (94.3 F)
1987	32.9 C (91.2 F)
1988	31.9 C (89.4 F)
1989	32.5 C (90.5 F)
1990	34.5 C (94.1 F)
1991	33.6 C (92.5 F)
1992	35.0 C (95.0 F)
1993	31.0 C (87.8 F)
1994	36.4 C (97.5 F)
1995	37.3 C (99.1 F)
1996	34.4 C (93.9 F)
1997	33.6 C (92.5 F)
1998	38.0 C (100.4 F)
1999	34.2 C (93.6 F)
2000	35.5 C (95.9 F)
2001	35.6 C (96.1 F)
2002	37.4 C (99.3 F)
2003	39.4 C (102.9 F)
2004	33.4 C (92.1 F)
2005	35.0 C (95.0 F)
2006	36.5 C (97.7 F)
2007	36.2 C (97.2 F)
2008	14.5 C (58.1 F)

Coldest night (TNn)

The coldest night of the year at Koblenz-Horchheim, 1951 to 2008. The record is -20.6 C (-5.1 F) in 1956, marked on the chart; the median year is -10.7 C (12.6 F).

Coldest night (TNn) at Koblenz-Horchheim by year
Year	Coldest night (TNn)
1951	-4.5 C (23.9 F)
1952	-9.2 C (15.4 F)
1953	-10.6 C (12.9 F)
1954	-14.0 C (6.8 F)
1955	-11.4 C (11.5 F)
1956	-20.6 C (-5.1 F)
1957	-8.0 C (17.6 F)
1958	-7.5 C (18.5 F)
1959	-6.0 C (21.2 F)
1960	-14.2 C (6.4 F)
1961	-10.4 C (13.3 F)
1962	-12.5 C (9.5 F)
1963	-16.0 C (3.2 F)
1964	-9.5 C (14.9 F)
1965	-9.9 C (14.2 F)
1966	-15.1 C (4.8 F)
1967	-11.4 C (11.5 F)
1968	-18.9 C (-2.0 F)
1969	-13.1 C (8.4 F)
1970	-11.3 C (11.7 F)
1971	-13.5 C (7.7 F)
1972	-10.5 C (13.1 F)
1973	-11.6 C (11.1 F)
1974	-2.8 C (27.0 F)
1975	-10.0 C (14.0 F)
1976	-12.2 C (10.0 F)
1977	-6.0 C (21.2 F)
1978	-11.2 C (11.8 F)
1979	-16.1 C (3.0 F)
1980	-9.8 C (14.4 F)
1981	-9.0 C (15.8 F)
1982	-15.0 C (5.0 F)
1983	-7.0 C (19.4 F)
1984	-6.5 C (20.3 F)
1985	-14.9 C (5.2 F)
1986	-13.8 C (7.2 F)
1987	-14.1 C (6.6 F)
1988	-7.2 C (19.0 F)
1989	-6.0 C (21.2 F)
1990	-4.5 C (23.9 F)
1991	-12.0 C (10.4 F)
1992	-8.1 C (17.4 F)
1993	-11.1 C (12.0 F)
1994	-9.5 C (14.9 F)
1995	-10.9 C (12.4 F)
1996	-15.1 C (4.8 F)
1997	-17.0 C (1.4 F)
1998	-11.8 C (10.8 F)
1999	-8.4 C (16.9 F)
2000	-8.0 C (17.6 F)
2001	-9.6 C (14.7 F)
2002	-11.4 C (11.5 F)
2003	-12.0 C (10.4 F)
2004	-7.8 C (18.0 F)
2005	-11.7 C (10.9 F)
2006	-10.4 C (13.3 F)
2007	-7.6 C (18.3 F)
2008	-4.7 C (23.5 F)

Wettest day (Rx1day)

The wettest day of the year at Koblenz-Horchheim, 1951 to 2008. The record is 76.6 mm (3.0 in) in 1977, marked on the chart; the median year is 31.6 mm (1.2 in).

Wettest day (Rx1day) at Koblenz-Horchheim by year
Year	Wettest day (Rx1day)
1951	42.5 mm (1.7 in)
1952	24.6 mm (1.0 in)
1953	27.4 mm (1.1 in)
1954	44.0 mm (1.7 in)
1955	33.0 mm (1.3 in)
1956	31.9 mm (1.3 in)
1957	28.1 mm (1.1 in)
1958	29.6 mm (1.2 in)
1959	23.2 mm (0.9 in)
1960	27.3 mm (1.1 in)
1961	56.5 mm (2.2 in)
1962	26.7 mm (1.1 in)
1963	52.0 mm (2.0 in)
1964	37.0 mm (1.5 in)
1965	24.9 mm (1.0 in)
1966	31.3 mm (1.2 in)
1967	31.6 mm (1.2 in)
1968	54.6 mm (2.1 in)
1969	66.8 mm (2.6 in)
1970	25.5 mm (1.0 in)
1971	34.4 mm (1.4 in)
1972	41.0 mm (1.6 in)
1973	23.7 mm (0.9 in)
1974	35.1 mm (1.4 in)
1975	38.0 mm (1.5 in)
1976	23.8 mm (0.9 in)
1977	76.6 mm (3.0 in)
1978	31.6 mm (1.2 in)
1979	73.2 mm (2.9 in)
1980	30.7 mm (1.2 in)
1981	38.5 mm (1.5 in)
1982	53.4 mm (2.1 in)
1983	32.3 mm (1.3 in)
1984	51.3 mm (2.0 in)
1985	40.5 mm (1.6 in)
1986	46.8 mm (1.8 in)
1987	30.4 mm (1.2 in)
1988	43.8 mm (1.7 in)
1989	40.2 mm (1.6 in)
1990	30.5 mm (1.2 in)
1991	26.3 mm (1.0 in)
1992	34.0 mm (1.3 in)
1993	45.8 mm (1.8 in)
1994	29.5 mm (1.2 in)
1995	20.7 mm (0.8 in)
1996	29.4 mm (1.2 in)
1997	26.8 mm (1.1 in)
1998	31.3 mm (1.2 in)
1999	27.3 mm (1.1 in)
2000	36.1 mm (1.4 in)
2001	21.9 mm (0.9 in)
2002	41.7 mm (1.6 in)
2003	33.3 mm (1.3 in)
2004	27.0 mm (1.1 in)
2005	26.0 mm (1.0 in)
2006	18.9 mm (0.7 in)
2007	27.3 mm (1.1 in)
2008	5.3 mm (0.21 in)

Wettest five days (Rx5day)

The wettest five days of the year at Koblenz-Horchheim, 1951 to 2008. The record is 113.8 mm (4.5 in) in 1979, marked on the chart; the median year is 54.0 mm (2.1 in).

Wettest five days (Rx5day) at Koblenz-Horchheim by year
Year	Wettest five days (Rx5day)
1951	54.4 mm (2.1 in)
1952	53.6 mm (2.1 in)
1953	32.2 mm (1.3 in)
1954	63.0 mm (2.5 in)
1955	38.5 mm (1.5 in)
1956	59.2 mm (2.3 in)
1957	38.3 mm (1.5 in)
1958	83.3 mm (3.3 in)
1959	44.6 mm (1.8 in)
1960	66.7 mm (2.6 in)
1961	85.9 mm (3.4 in)
1962	49.4 mm (1.9 in)
1963	67.1 mm (2.6 in)
1964	52.1 mm (2.1 in)
1965	60.8 mm (2.4 in)
1966	71.1 mm (2.8 in)
1967	46.2 mm (1.8 in)
1968	94.3 mm (3.7 in)
1969	94.0 mm (3.7 in)
1970	53.7 mm (2.1 in)
1971	45.6 mm (1.8 in)
1972	42.2 mm (1.7 in)
1973	37.3 mm (1.5 in)
1974	52.2 mm (2.1 in)
1975	42.1 mm (1.7 in)
1976	51.1 mm (2.0 in)
1977	97.0 mm (3.8 in)
1978	74.4 mm (2.9 in)
1979	113.8 mm (4.5 in)
1980	62.0 mm (2.4 in)
1981	84.4 mm (3.3 in)
1982	82.0 mm (3.2 in)
1983	67.5 mm (2.7 in)
1984	74.5 mm (2.9 in)
1985	78.5 mm (3.1 in)
1986	74.4 mm (2.9 in)
1987	61.4 mm (2.4 in)
1988	82.9 mm (3.3 in)
1989	53.5 mm (2.1 in)
1990	57.5 mm (2.3 in)
1991	40.7 mm (1.6 in)
1992	54.2 mm (2.1 in)
1993	62.9 mm (2.5 in)
1994	48.6 mm (1.9 in)
1995	45.2 mm (1.8 in)
1996	33.7 mm (1.3 in)
1997	42.9 mm (1.7 in)
1998	58.6 mm (2.3 in)
1999	35.4 mm (1.4 in)
2000	67.2 mm (2.6 in)
2001	39.4 mm (1.6 in)
2002	60.8 mm (2.4 in)
2003	48.9 mm (1.9 in)
2004	53.5 mm (2.1 in)
2005	52.9 mm (2.1 in)
2006	41.0 mm (1.6 in)
2007	52.5 mm (2.1 in)
2008	12.1 mm (0.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Koblenz-Horchheim, 1951 to 2008. The record is 42 days in 2007, marked on the chart; the median year is 21 days.

Longest dry spell (CDD) at Koblenz-Horchheim by year
Year	Longest dry spell (CDD)
1951	37 days
1952	14 days
1953	33 days
1954	25 days
1955	21 days
1956	23 days
1957	27 days
1958	23 days
1959	34 days
1960	27 days
1961	17 days
1962	27 days
1963	20 days
1964	16 days
1965	15 days
1966	19 days
1967	13 days
1968	22 days
1969	31 days
1970	16 days
1971	24 days
1972	33 days
1973	22 days
1974	27 days
1975	17 days
1976	32 days
1977	18 days
1978	21 days
1979	14 days
1980	19 days
1981	18 days
1982	21 days
1983	17 days
1984	21 days
1985	27 days
1986	30 days
1987	13 days
1988	20 days
1989	31 days
1990	36 days
1991	35 days
1992	22 days
1993	19 days
1994	18 days
1995	24 days
1996	23 days
1997	21 days
1998	20 days
1999	27 days
2000	10 days
2001	15 days
2002	21 days
2003	23 days
2004	14 days
2005	17 days
2006	17 days
2007	42 days
2008	7 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

57 years with a frost

Across 57 years with a frost, the median last spring frost at Koblenz-Horchheim falls on 12 April and the median first autumn frost on 8 November, which leaves a median of 216 days between them.

Fitted over all years, the growing season changes by +0.3 days per decade at this station.

Frost dates and growing season at Koblenz-Horchheim
Measure	Median, all years	Earliest period	Recent period (1978 to 2007)	Recent against earliest	Fitted trend
Last spring frost	12 April	n/a	12 April	n/a	-0.8 days per decade
First autumn frost	8 November	n/a	6 November	n/a	-0.6 days per decade
Growing days	216 days	n/a	217 days	n/a	+0.3 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

57 years, 1951 to 2007

A day with at least 32.5 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 86.0 mm (3.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Koblenz-Horchheim: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	32.5 mm (1.3 in)
5 years	42.9 mm (1.7 in)
10 years	51.1 mm (2.0 in)
25 years	63.3 mm (2.5 in)
50 years	73.9 mm (2.9 in)
100 years	86.0 mm (3.4 in)	Longer than the 57 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, 57 years of values from 1951 to 2007.

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: 76.6 mm (3.0 in) in 1977; 73.2 mm (2.9 in) in 1979; 66.8 mm (2.6 in) in 1969.

Station Changes

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

Download the Data

Data for Koblenz-Horchheim standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Koblenz-Horchheim 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 2026-10-14 (14 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).