Siegen (Klaranlage) Weather Records (GME00128794)

Record envelope, standing records and threshold days for Siegen (Klaranlage) (GME00128794), Germany, with 82 years of record.

Key Facts for Siegen (Klaranlage)

Siegen (Klaranlage) (GME00128794) is a weather station in Germany at 50.85 latitude and 8.00 longitude, 263 m (863 ft) above sea level.
The station reports from 1937 to 2018, 82 years of record.
1,464 records set at Siegen (Klaranlage) still stand.
Records are tracked for tmax, tmin, prcp, snwd: an element needs 30 years of data to be eligible.
Siegen (Klaranlage) set a daily record high maximum temperature of 18.4 C (65.1 F) on 12 November 2018.

About the Station

Location: Germany, 50.85 latitude, 8.00 longitude.
Elevation: 263 m (863 ft).
Period of record: 1937 to 2018, 82 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 Siegen (Klaranlage). 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 Siegen (Klaranlage), 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)	-28.3 C (-18.9 F)	n/a	n/a
Feb	18.3 C (64.9 F)	-23.4 C (-10.1 F)	n/a	n/a
Mar	23.9 C (75.0 F)	-16.5 C (2.3 F)	n/a	n/a
Apr	29.7 C (85.5 F)	-8.0 C (17.6 F)	n/a	n/a
May	33.0 C (91.4 F)	-4.9 C (23.2 F)	n/a	n/a
Jun	36.0 C (96.8 F)	-1.1 C (30.0 F)	n/a	n/a
Jul	36.4 C (97.5 F)	2.1 C (35.8 F)	n/a	n/a
Aug	37.0 C (98.6 F)	1.8 C (35.2 F)	n/a	n/a
Sep	31.7 C (89.1 F)	-2.1 C (28.2 F)	n/a	n/a
Oct	27.1 C (80.8 F)	-6.2 C (20.8 F)	n/a	n/a
Nov	20.4 C (68.7 F)	-12.5 C (9.5 F)	n/a	n/a
Dec	15.0 C (59.0 F)	-20.1 C (-4.2 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Siegen (Klaranlage) still stand. 1956 holds the most, with 41.

Standing records at Siegen (Klaranlage) by the year they were set
Year set	Standing records
1937	10
1938	27
1939	23
1940	33
1941	31
1942	33
1943	14
1944	16
1949	30
1950	11
1951	12
1952	28
1953	21
1954	12
1955	17
1956	41
1957	19
1958	26
1959	21
1960	11
1961	32
1962	33
1963	21
1964	21
1965	15
1967	16
1968	16
1969	13
1970	7
1971	19
1972	12
1973	10
1974	19
1975	8
1976	27
1977	6
1978	12
1979	13
1980	22
1981	24
1982	7
1983	20
1984	15
1985	21
1986	27
1987	22
1988	6
1989	21
1990	10
1991	8
1992	13
1993	24
1994	21
1995	10
1996	14
1997	16
1998	22
1999	9
2000	14
2001	11
2002	28
2003	29
2004	12
2005	20
2006	37
2007	31
2008	5
2009	16
2010	15
2011	14
2012	32
2013	24
2014	17
2015	33
2016	16
2017	12
2018	30

All-Time Record Progression

5 new records

5 all-time records were set at Siegen (Klaranlage) between 14 January 1979 and 3 July 2015. Each dot is a new record.

When Siegen (Klaranlage) set new all-time records
Date	Kind	Detail
1979-01-14	Record snow depth	Record snow depth 50.0 cm (19.7 in)
2002-06-18	Record high maximum temperature	Record high maximum temperature 36.0 C (96.8 F)
2003-08-07	Record high maximum temperature	Record high maximum temperature 36.6 C (97.9 F)
2003-08-08	Record high maximum temperature	Record high maximum temperature 37.0 C (98.6 F)
2015-07-03	Record high minimum temperature	Record high minimum temperature 21.0 C (69.8 F)

Wettest Day of Each Month

Jun: 96.4 mm (3.8 in)

The wettest day on record for each calendar month at Siegen (Klaranlage). The most was 96.4 mm (3.8 in) on 15 June 1968.

Record daily precipitation for each month at Siegen (Klaranlage)
Month	Record daily precipitation (mm)	Date
Jan	49.9 mm (2.0 in)	18 January 1986
Feb	81.4 mm (3.2 in)	6 February 1984
Mar	49.0 mm (1.9 in)	12 March 1992
Apr	42.4 mm (1.7 in)	19 April 2005
May	59.0 mm (2.3 in)	28 May 2016
Jun	96.4 mm (3.8 in)	15 June 1968
Jul	44.2 mm (1.7 in)	11 July 1995
Aug	77.7 mm (3.1 in)	28 August 2002
Sep	60.7 mm (2.4 in)	14 September 1998
Oct	52.9 mm (2.1 in)	9 October 1997
Nov	63.3 mm (2.5 in)	3 November 1940
Dec	54.6 mm (2.1 in)	23 December 1967

Period of Record Coverage

1937 to 2018

77 years of record at Siegen (Klaranlage), 1937 to 2018. 1 years have data for under 90 percent of days and are left out of rankings: 2008.

Days with data per year at Siegen (Klaranlage)
Year	Days with data	Share of year	Complete
1937	365	100%	Yes
1938	365	100%	Yes
1939	365	100%	Yes
1940	366	100%	Yes
1941	365	100%	Yes
1942	365	100%	Yes
1943	365	100%	Yes
1944	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
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	306	84%	No
2009	365	100%	Yes
2010	365	100%	Yes
2011	365	100%	Yes
2012	366	100%	Yes
2013	365	100%	Yes
2014	365	100%	Yes
2015	365	100%	Yes
2016	366	100%	Yes
2017	365	100%	Yes
2018	334	92%	Yes

Latest Records

Latest records at Siegen (Klaranlage)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 November 2018	Siegen (Klaranlage), DE	daily high max	18.4 C (65.1 F)	3.4 C (6.1 F)	23 years	22 of 100 (Routine)
11 November 2018	Siegen (Klaranlage), DE	daily high min	9.8 C (49.6 F)	0.9 C (1.6 F)	3 years	10 of 100 (Routine)
17 October 2018	Siegen (Klaranlage), DE	daily high max	24.1 C (75.4 F)	3.1 C (5.6 F)	0 years	15 of 100 (Routine)
16 October 2018	Siegen (Klaranlage), DE	daily high max	26.3 C (79.3 F)	3.4 C (6.1 F)	0 years	16 of 100 (Routine)
15 October 2018	Siegen (Klaranlage), DE	daily high max	25.5 C (77.9 F)	2.2 C (4.0 F)	0 years	13 of 100 (Routine)
14 October 2018	Siegen (Klaranlage), DE	daily high max	24.8 C (76.6 F)	1.7 C (3.1 F)	28 years	20 of 100 (Routine)
13 October 2018	Siegen (Klaranlage), DE	daily high max	25.9 C (78.6 F)	3.5 C (6.3 F)	16 years	21 of 100 (Routine)
12 October 2018	Siegen (Klaranlage), DE	daily high max	25.7 C (78.3 F)	3.7 C (6.7 F)	51 years	31 of 100 (Routine)
11 October 2018	Siegen (Klaranlage), DE	daily high max (Tie)	23.5 C (74.3 F)	tie	48 years	5 of 100 (Routine)
6 October 2018	Siegen (Klaranlage), DE	daily high max	23.6 C (74.5 F)	0.6 C (1.1 F)	56 years	26 of 100 (Routine)
5 October 2018	Siegen (Klaranlage), DE	daily high max (Tie)	23.0 C (73.4 F)	tie	44 years	5 of 100 (Routine)
18 September 2018	Siegen (Klaranlage), DE	daily high max	30.7 C (87.3 F)	0.9 C (1.6 F)	56 years	27 of 100 (Routine)
21 August 2018	Siegen (Klaranlage), DE	daily high min (Tie)	17.3 C (63.1 F)	tie	5 years	2 of 100 (Routine)
7 August 2018	Siegen (Klaranlage), DE	daily high max (Tie)	36.6 C (97.9 F)	tie	15 years	3 of 100 (Routine)
4 August 2018	Siegen (Klaranlage), DE	daily high max	34.2 C (93.6 F)	0.2 C (0.4 F)	28 years	16 of 100 (Routine)
3 August 2018	Siegen (Klaranlage), DE	daily high max	35.9 C (96.6 F)	2.1 C (3.8 F)	55 years	28 of 100 (Routine)
3 August 2018	Siegen (Klaranlage), DE	daily high min	18.0 C (64.4 F)	1.0 C (1.8 F)	48 years	25 of 100 (Routine)
31 July 2018	Siegen (Klaranlage), DE	daily high max	33.9 C (93.0 F)	0.6 C (1.1 F)	35 years	19 of 100 (Routine)
27 July 2018	Siegen (Klaranlage), DE	daily high max	34.8 C (94.6 F)	1.7 C (3.1 F)	4 years	12 of 100 (Routine)
26 July 2018	Siegen (Klaranlage), DE	daily high max	36.0 C (96.8 F)	2.6 C (4.7 F)	12 years	16 of 100 (Routine)

Climate Trend

75 complete years, 1937 to 2017

One stripe for each of 75 complete years at Siegen (Klaranlage), 1937 to 2017. Blue stripes are years cooler than the station's own mean of 8.9 C (48.1 F); red stripes are warmer. The coolest year was 1940, at 6.6 C (43.9 F), and the warmest was 2014, at 10.8 C (51.4 F). The strongest colour marks a difference of 2.4 C (4.3 F).

Annual mean temperature at Siegen (Klaranlage) as warming stripes, 1937 to 2017
Year	Annual mean temperature	Difference from the station mean
1937	8.6 C	-0.35 C
1938	8.5 C	-0.43 C
1939	8.2 C	-0.74 C
1940	6.6 C	-2.34 C
1941	7.3 C	-1.66 C
1942	7.3 C	-1.67 C
1943	8.5 C	-0.41 C
1944	7.9 C	-1.07 C
1949	9.0 C	+0.09 C
1950	8.6 C	-0.36 C
1951	8.8 C	-0.11 C
1952	8.0 C	-0.96 C
1953	8.8 C	-0.16 C
1954	7.7 C	-1.20 C
1955	7.7 C	-1.26 C
1956	7.3 C	-1.63 C
1957	9.0 C	+0.03 C
1958	8.6 C	-0.34 C
1959	9.6 C	+0.64 C
1960	8.8 C	-0.17 C
1961	9.2 C	+0.27 C
1962	7.3 C	-1.65 C
1963	7.4 C	-1.51 C
1964	8.5 C	-0.45 C
1965	8.0 C	-0.96 C
1967	8.6 C	-0.36 C
1968	8.6 C	-0.33 C
1969	8.5 C	-0.43 C
1970	8.2 C	-0.71 C
1971	9.0 C	+0.06 C
1972	8.4 C	-0.55 C
1973	8.8 C	-0.11 C
1974	9.3 C	+0.39 C
1975	9.6 C	+0.67 C
1976	9.2 C	+0.28 C
1977	9.2 C	+0.24 C
1978	8.3 C	-0.59 C
1979	8.2 C	-0.71 C
1980	8.4 C	-0.51 C
1981	8.6 C	-0.33 C
1982	9.3 C	+0.38 C
1983	9.4 C	+0.43 C
1984	8.7 C	-0.21 C
1985	7.8 C	-1.10 C
1986	8.5 C	-0.48 C
1987	8.1 C	-0.79 C
1988	9.5 C	+0.57 C
1989	10.0 C	+1.05 C
1990	9.9 C	+0.93 C
1991	8.7 C	-0.26 C
1992	9.7 C	+0.76 C
1993	9.0 C	+0.11 C
1994	10.2 C	+1.27 C
1995	9.6 C	+0.64 C
1996	8.0 C	-0.94 C
1997	9.6 C	+0.71 C
1998	9.5 C	+0.58 C
1999	10.1 C	+1.20 C
2000	10.4 C	+1.47 C
2001	9.7 C	+0.76 C
2002	10.2 C	+1.24 C
2003	10.1 C	+1.17 C
2004	9.5 C	+0.52 C
2005	10.0 C	+1.03 C
2006	10.3 C	+1.34 C
2007	10.4 C	+1.45 C
2009	9.5 C	+0.60 C
2010	8.4 C	-0.50 C
2011	10.2 C	+1.25 C
2012	9.4 C	+0.49 C
2013	9.1 C	+0.21 C
2014	10.8 C	+1.82 C
2015	10.2 C	+1.23 C
2016	9.9 C	+1.01 C
2017	10.0 C	+1.10 C

The annual mean temperature here has risen by 0.3 C (0.2 to 0.3) per decade over 1937 to 2017. In Fahrenheit: 0.5 F (0.4 to 0.6) per decade. The slope is a straight line fitted to 75 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Siegen (Klaranlage)
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.3 C (0.2 to 0.3) per decade	0.5 F (0.4 to 0.6) per decade	1937 to 2017	75	Rise
Mean daily maximum	0.3 C (0.2 to 0.3) per decade	0.5 F (0.3 to 0.6) per decade	1937 to 2017	75	Rise
Mean daily minimum	0.3 C (0.2 to 0.4) per decade	0.5 F (0.4 to 0.6) per decade	1937 to 2017	75	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

1937 to 2018

Yearly extremes at Siegen (Klaranlage): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	37.0 C (98.6 F)	2003	32.5 C (90.5 F)	77
Coldest night (TNn)	-28.3 C (-18.9 F)	1942	-14.0 C (6.8 F)	77
Wettest day (Rx1day)	96.4 mm (3.8 in)	1968	37.2 mm (1.5 in)	77
Wettest five days (Rx5day)	151.8 mm (6.0 in)	2003	80.6 mm (3.2 in)	77
Longest dry spell (CDD)	42 days	1959	18 days	77

Hottest day (TXx)

The hottest day of the year at Siegen (Klaranlage), 1937 to 2018. The record is 37.0 C (98.6 F) in 2003, marked on the chart; the median year is 32.5 C (90.5 F).

Hottest day (TXx) at Siegen (Klaranlage) by year
Year	Hottest day (TXx)
1937	33.4 C (92.1 F)
1938	32.4 C (90.3 F)
1939	29.9 C (85.8 F)
1940	27.7 C (81.9 F)
1941	32.3 C (90.1 F)
1942	31.5 C (88.7 F)
1943	31.9 C (89.4 F)
1944	34.9 C (94.8 F)
1949	31.0 C (87.8 F)
1950	30.6 C (87.1 F)
1951	30.2 C (86.4 F)
1952	35.0 C (95.0 F)
1953	30.7 C (87.3 F)
1954	30.5 C (86.9 F)
1955	30.4 C (86.7 F)
1956	28.8 C (83.8 F)
1957	35.6 C (96.1 F)
1958	29.8 C (85.6 F)
1959	35.1 C (95.2 F)
1960	29.5 C (85.1 F)
1961	31.4 C (88.5 F)
1962	29.7 C (85.5 F)
1963	33.8 C (92.8 F)
1964	34.8 C (94.6 F)
1965	28.6 C (83.5 F)
1967	29.6 C (85.3 F)
1968	31.0 C (87.8 F)
1969	32.4 C (90.3 F)
1970	30.1 C (86.2 F)
1971	33.1 C (91.6 F)
1972	33.1 C (91.6 F)
1973	32.0 C (89.6 F)
1974	33.6 C (92.5 F)
1975	32.5 C (90.5 F)
1976	34.6 C (94.3 F)
1977	31.5 C (88.7 F)
1978	31.6 C (88.9 F)
1979	31.2 C (88.2 F)
1980	30.7 C (87.3 F)
1981	30.6 C (87.1 F)
1982	31.1 C (88.0 F)
1983	33.4 C (92.1 F)
1984	32.9 C (91.2 F)
1985	31.5 C (88.7 F)
1986	33.6 C (92.5 F)
1987	32.5 C (90.5 F)
1988	30.4 C (86.7 F)
1989	31.8 C (89.2 F)
1990	34.0 C (93.2 F)
1991	33.0 C (91.4 F)
1992	34.0 C (93.2 F)
1993	29.9 C (85.8 F)
1994	34.3 C (93.7 F)
1995	34.1 C (93.4 F)
1996	32.7 C (90.9 F)
1997	32.2 C (90.0 F)
1998	34.0 C (93.2 F)
1999	32.5 C (90.5 F)
2000	33.5 C (92.3 F)
2001	33.5 C (92.3 F)
2002	36.0 C (96.8 F)
2003	37.0 C (98.6 F)
2004	31.2 C (88.2 F)
2005	33.0 C (91.4 F)
2006	35.0 C (95.0 F)
2007	34.0 C (93.2 F)
2008	31.9 C (89.4 F)
2009	34.2 C (93.6 F)
2010	36.2 C (97.2 F)
2011	31.7 C (89.1 F)
2012	34.9 C (94.8 F)
2013	35.1 C (95.2 F)
2014	33.3 C (91.9 F)
2015	36.4 C (97.5 F)
2016	35.3 C (95.5 F)
2017	32.9 C (91.2 F)
2018	36.6 C (97.9 F)

Coldest night (TNn)

The coldest night of the year at Siegen (Klaranlage), 1937 to 2018. The record is -28.3 C (-18.9 F) in 1942, marked on the chart; the median year is -14.0 C (6.8 F).

Coldest night (TNn) at Siegen (Klaranlage) by year
Year	Coldest night (TNn)
1937	-10.5 C (13.1 F)
1938	-20.1 C (-4.2 F)
1939	-17.9 C (-0.2 F)
1940	-25.0 C (-13.0 F)
1941	-19.0 C (-2.2 F)
1942	-28.3 C (-18.9 F)
1943	-17.6 C (0.3 F)
1944	-14.5 C (5.9 F)
1949	-16.5 C (2.3 F)
1950	-16.2 C (2.8 F)
1951	-10.4 C (13.3 F)
1952	-17.0 C (1.4 F)
1953	-20.5 C (-4.9 F)
1954	-16.0 C (3.2 F)
1955	-20.0 C (-4.0 F)
1956	-23.4 C (-10.1 F)
1957	-12.4 C (9.7 F)
1958	-14.7 C (5.5 F)
1959	-13.6 C (7.5 F)
1960	-17.9 C (-0.2 F)
1961	-12.2 C (10.0 F)
1962	-15.0 C (5.0 F)
1963	-22.0 C (-7.6 F)
1964	-12.0 C (10.4 F)
1965	-13.4 C (7.9 F)
1967	-14.9 C (5.2 F)
1968	-21.1 C (-6.0 F)
1969	-15.0 C (5.0 F)
1970	-16.5 C (2.3 F)
1971	-19.1 C (-2.4 F)
1972	-16.3 C (2.7 F)
1973	-15.9 C (3.4 F)
1974	-6.4 C (20.5 F)
1975	-12.0 C (10.4 F)
1976	-17.5 C (0.5 F)
1977	-9.3 C (15.3 F)
1978	-15.9 C (3.4 F)
1979	-19.0 C (-2.2 F)
1980	-11.8 C (10.8 F)
1981	-14.8 C (5.4 F)
1982	-17.1 C (1.2 F)
1983	-12.0 C (10.4 F)
1984	-9.8 C (14.4 F)
1985	-17.0 C (1.4 F)
1986	-17.4 C (0.7 F)
1987	-17.6 C (0.3 F)
1988	-11.6 C (11.1 F)
1989	-8.6 C (16.5 F)
1990	-7.2 C (19.0 F)
1991	-13.7 C (7.3 F)
1992	-11.4 C (11.5 F)
1993	-14.0 C (6.8 F)
1994	-11.2 C (11.8 F)
1995	-14.0 C (6.8 F)
1996	-15.0 C (5.0 F)
1997	-17.4 C (0.7 F)
1998	-13.6 C (7.5 F)
1999	-12.7 C (9.1 F)
2000	-10.4 C (13.3 F)
2001	-13.5 C (7.7 F)
2002	-13.4 C (7.9 F)
2003	-13.4 C (7.9 F)
2004	-9.0 C (15.8 F)
2005	-15.6 C (3.9 F)
2006	-10.0 C (14.0 F)
2007	-8.6 C (16.5 F)
2008	-8.9 C (16.0 F)
2009	-18.2 C (-0.8 F)
2010	-13.5 C (7.7 F)
2011	-10.0 C (14.0 F)
2012	-18.1 C (-0.6 F)
2013	-12.1 C (10.2 F)
2014	-7.8 C (18.0 F)
2015	-8.4 C (16.9 F)
2016	-11.4 C (11.5 F)
2017	-12.4 C (9.7 F)
2018	-12.1 C (10.2 F)

Wettest day (Rx1day)

The wettest day of the year at Siegen (Klaranlage), 1937 to 2018. The record is 96.4 mm (3.8 in) in 1968, marked on the chart; the median year is 37.2 mm (1.5 in).

Wettest day (Rx1day) at Siegen (Klaranlage) by year
Year	Wettest day (Rx1day)
1937	37.9 mm (1.5 in)
1938	39.5 mm (1.6 in)
1939	50.2 mm (2.0 in)
1940	63.3 mm (2.5 in)
1941	27.9 mm (1.1 in)
1942	32.0 mm (1.3 in)
1943	30.5 mm (1.2 in)
1944	37.4 mm (1.5 in)
1949	38.5 mm (1.5 in)
1950	33.3 mm (1.3 in)
1951	22.9 mm (0.9 in)
1952	42.8 mm (1.7 in)
1953	34.7 mm (1.4 in)
1954	37.0 mm (1.5 in)
1955	38.8 mm (1.5 in)
1956	31.0 mm (1.2 in)
1957	25.6 mm (1.0 in)
1958	41.9 mm (1.6 in)
1959	19.8 mm (0.8 in)
1960	41.3 mm (1.6 in)
1961	46.7 mm (1.8 in)
1962	48.3 mm (1.9 in)
1963	37.2 mm (1.5 in)
1964	33.0 mm (1.3 in)
1965	47.0 mm (1.9 in)
1967	54.6 mm (2.1 in)
1968	96.4 mm (3.8 in)
1969	29.3 mm (1.2 in)
1970	34.8 mm (1.4 in)
1971	33.7 mm (1.3 in)
1972	32.1 mm (1.3 in)
1973	27.8 mm (1.1 in)
1974	34.7 mm (1.4 in)
1975	19.0 mm (0.7 in)
1976	26.1 mm (1.0 in)
1977	32.1 mm (1.3 in)
1978	39.5 mm (1.6 in)
1979	55.9 mm (2.2 in)
1980	58.9 mm (2.3 in)
1981	44.3 mm (1.7 in)
1982	34.1 mm (1.3 in)
1983	35.8 mm (1.4 in)
1984	81.4 mm (3.2 in)
1985	26.4 mm (1.0 in)
1986	49.9 mm (2.0 in)
1987	36.4 mm (1.4 in)
1988	35.5 mm (1.4 in)
1989	36.6 mm (1.4 in)
1990	46.3 mm (1.8 in)
1991	37.0 mm (1.5 in)
1992	49.0 mm (1.9 in)
1993	46.8 mm (1.8 in)
1994	50.5 mm (2.0 in)
1995	44.2 mm (1.7 in)
1996	33.8 mm (1.3 in)
1997	52.9 mm (2.1 in)
1998	60.7 mm (2.4 in)
1999	44.8 mm (1.8 in)
2000	36.1 mm (1.4 in)
2001	32.2 mm (1.3 in)
2002	77.7 mm (3.1 in)
2003	41.3 mm (1.6 in)
2004	34.5 mm (1.4 in)
2005	44.8 mm (1.8 in)
2006	33.3 mm (1.3 in)
2007	69.4 mm (2.7 in)
2008	37.6 mm (1.5 in)
2009	28.9 mm (1.1 in)
2010	28.5 mm (1.1 in)
2011	40.5 mm (1.6 in)
2012	34.8 mm (1.4 in)
2013	30.0 mm (1.2 in)
2014	35.8 mm (1.4 in)
2015	41.7 mm (1.6 in)
2016	59.0 mm (2.3 in)
2017	39.6 mm (1.6 in)
2018	25.9 mm (1.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Siegen (Klaranlage), 1937 to 2018. The record is 151.8 mm (6.0 in) in 2003, marked on the chart; the median year is 80.6 mm (3.2 in).

Wettest five days (Rx5day) at Siegen (Klaranlage) by year
Year	Wettest five days (Rx5day)
1937	81.3 mm (3.2 in)
1938	82.0 mm (3.2 in)
1939	141.5 mm (5.6 in)
1940	144.0 mm (5.7 in)
1941	71.0 mm (2.8 in)
1942	79.1 mm (3.1 in)
1943	64.0 mm (2.5 in)
1944	67.1 mm (2.6 in)
1949	69.1 mm (2.7 in)
1950	68.1 mm (2.7 in)
1951	64.3 mm (2.5 in)
1952	76.5 mm (3.0 in)
1953	58.9 mm (2.3 in)
1954	79.4 mm (3.1 in)
1955	84.9 mm (3.3 in)
1956	75.8 mm (3.0 in)
1957	73.7 mm (2.9 in)
1958	83.0 mm (3.3 in)
1959	55.0 mm (2.2 in)
1960	76.9 mm (3.0 in)
1961	105.5 mm (4.2 in)
1962	77.7 mm (3.1 in)
1963	78.1 mm (3.1 in)
1964	85.8 mm (3.4 in)
1965	79.2 mm (3.1 in)
1967	80.1 mm (3.2 in)
1968	129.3 mm (5.1 in)
1969	78.4 mm (3.1 in)
1970	82.5 mm (3.2 in)
1971	60.7 mm (2.4 in)
1972	68.5 mm (2.7 in)
1973	73.4 mm (2.9 in)
1974	78.6 mm (3.1 in)
1975	44.8 mm (1.8 in)
1976	61.9 mm (2.4 in)
1977	71.5 mm (2.8 in)
1978	85.0 mm (3.3 in)
1979	95.4 mm (3.8 in)
1980	83.0 mm (3.3 in)
1981	97.4 mm (3.8 in)
1982	72.1 mm (2.8 in)
1983	93.3 mm (3.7 in)
1984	121.0 mm (4.8 in)
1985	60.3 mm (2.4 in)
1986	118.9 mm (4.7 in)
1987	125.0 mm (4.9 in)
1988	81.7 mm (3.2 in)
1989	95.0 mm (3.7 in)
1990	133.7 mm (5.3 in)
1991	120.1 mm (4.7 in)
1992	88.3 mm (3.5 in)
1993	97.0 mm (3.8 in)
1994	100.5 mm (4.0 in)
1995	114.9 mm (4.5 in)
1996	66.9 mm (2.6 in)
1997	111.6 mm (4.4 in)
1998	134.7 mm (5.3 in)
1999	89.7 mm (3.5 in)
2000	69.9 mm (2.8 in)
2001	75.0 mm (3.0 in)
2002	115.5 mm (4.5 in)
2003	151.8 mm (6.0 in)
2004	80.6 mm (3.2 in)
2005	100.1 mm (3.9 in)
2006	86.6 mm (3.4 in)
2007	92.8 mm (3.7 in)
2008	62.6 mm (2.5 in)
2009	51.6 mm (2.0 in)
2010	85.6 mm (3.4 in)
2011	72.6 mm (2.9 in)
2012	79.0 mm (3.1 in)
2013	76.1 mm (3.0 in)
2014	88.4 mm (3.5 in)
2015	92.2 mm (3.6 in)
2016	89.7 mm (3.5 in)
2017	66.2 mm (2.6 in)
2018	75.9 mm (3.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Siegen (Klaranlage), 1937 to 2018. The record is 42 days in 1959, marked on the chart; the median year is 18 days.

Longest dry spell (CDD) at Siegen (Klaranlage) by year
Year	Longest dry spell (CDD)
1937	25 days
1938	14 days
1939	17 days
1940	19 days
1941	24 days
1942	29 days
1943	17 days
1944	20 days
1949	20 days
1950	12 days
1951	29 days
1952	17 days
1953	18 days
1954	18 days
1955	11 days
1956	16 days
1957	16 days
1958	19 days
1959	42 days
1960	14 days
1961	16 days
1962	27 days
1963	33 days
1964	17 days
1965	13 days
1967	10 days
1968	23 days
1969	17 days
1970	12 days
1971	23 days
1972	32 days
1973	23 days
1974	31 days
1975	18 days
1976	25 days
1977	21 days
1978	16 days
1979	14 days
1980	20 days
1981	17 days
1982	19 days
1983	17 days
1984	22 days
1985	22 days
1986	30 days
1987	18 days
1988	13 days
1989	20 days
1990	17 days
1991	27 days
1992	15 days
1993	18 days
1994	16 days
1995	28 days
1996	15 days
1997	20 days
1998	18 days
1999	14 days
2000	9 days
2001	12 days
2002	21 days
2003	18 days
2004	19 days
2005	17 days
2006	15 days
2007	37 days
2008	16 days
2009	15 days
2010	27 days
2011	39 days
2012	18 days
2013	21 days
2014	18 days
2015	22 days
2016	18 days
2017	21 days
2018	20 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

75 years with a frost

Across 75 years with a frost, the median last spring frost at Siegen (Klaranlage) falls on 2 May and the median first autumn frost on 20 October, which leaves a median of 172 days between them.

In 1987 to 2017 the median growing season was 186 days. That is 35 days more than in 1937 to 1971.

Fitted over all years, the growing season changes by +6.4 days per decade at this station.

Frost dates and growing season at Siegen (Klaranlage)
Measure	Median, all years	Earliest period (1937 to 1971)	Recent period (1987 to 2017)	Recent against earliest	Fitted trend
Last spring frost	2 May	13 May	21 April	22 days earlier	-3.6 days per decade
First autumn frost	20 October	16 October	27 October	11 days later	+2.8 days per decade
Growing days	172 days	151 days	186 days	35 days more	+6.4 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

76 years, 1937 to 2018

A day with at least 37.6 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 89.8 mm (3.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Siegen (Klaranlage): the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	37.6 mm (1.5 in)
5 years	48.9 mm (1.9 in)
10 years	57.4 mm (2.3 in)
25 years	69.3 mm (2.7 in)
50 years	79.1 mm (3.1 in)
100 years	89.8 mm (3.5 in)	Longer than the 76 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, 76 years of values from 1937 to 2018.

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: 96.4 mm (3.8 in) in 1968; 81.4 mm (3.2 in) in 1984; 77.7 mm (3.1 in) in 2002.

Station Changes

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

Climate Twins

2002 to 2017 against 1961 to 1990

Over 2002 to 2017, Siegen (Klaranlage) had a mean temperature of 9.9 C (49.7 F) and 1,085.8 mm (42.7 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Baden-Baden-Geroldsau (Germany, 237 km away), Mullheim (Germany, 340 km away) and Eberbach/Neckar (Germany, 171 km away).

Climate twins of Siegen (Klaranlage): stations whose 1961 to 1990 climate is closest to its 2002 to 2017 climate
Twin station	Country	Distance away	Mean temperature, 1961-1990	Rain a year, 1961-1990	Climate difference
Baden-Baden-Geroldsau	Germany	237 km (147 mi)	10.0 C (49.9 F)	1,167.6 mm (46.0 in)	0.61
Mullheim	Germany	340 km (211 mi)	9.8 C (49.7 F)	1,006.1 mm (39.6 in)	0.66
Eberbach/Neckar	Germany	171 km (106 mi)	9.4 C (48.9 F)	1,035.9 mm (40.8 in)	0.68

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

Data for Siegen (Klaranlage) standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Siegen (Klaranlage) 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 2026-10-16 (16 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).