Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Arnsberg. 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 Arnsberg, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
16.5 C (61.7 F)
-24.8 C (-12.6 F)
n/a
n/a
Feb
24.5 C (76.1 F)
-23.2 C (-9.8 F)
n/a
n/a
Mar
24.2 C (75.6 F)
-17.8 C (0.0 F)
n/a
n/a
Apr
30.1 C (86.2 F)
-9.1 C (15.6 F)
n/a
n/a
May
33.6 C (92.5 F)
-4.6 C (23.7 F)
n/a
n/a
Jun
36.6 C (97.9 F)
-1.2 C (29.8 F)
n/a
n/a
Jul
35.8 C (96.4 F)
2.5 C (36.5 F)
n/a
n/a
Aug
35.2 C (95.4 F)
2.0 C (35.6 F)
n/a
n/a
Sep
34.6 C (94.3 F)
-1.5 C (29.3 F)
n/a
n/a
Oct
27.6 C (81.7 F)
-9.5 C (14.9 F)
n/a
n/a
Nov
21.7 C (71.1 F)
-16.9 C (1.6 F)
n/a
n/a
Dec
16.2 C (61.2 F)
-20.0 C (-4.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Arnsberg still stand. 1947 holds the most, with 30.
Standing records at Arnsberg by the year they were set
Year set
Standing records
1880
11
1881
17
1882
8
1883
6
1884
8
1885
7
1886
13
1887
16
1888
17
1889
12
1890
20
1891
10
1892
20
1893
9
1894
4
1895
20
1896
7
1897
4
1898
9
1899
24
1900
7
1901
9
1902
14
1903
10
1904
11
1905
6
1906
10
1907
12
1908
15
1909
11
1910
3
1911
15
1912
12
1913
12
1914
12
1915
7
1916
9
1917
9
1918
13
1919
15
1920
11
1921
19
1922
14
1923
21
1924
9
1925
13
1926
10
1927
8
1928
8
1929
19
1930
5
1931
9
1932
9
1933
9
1934
9
1935
11
1936
13
1937
9
1938
18
1939
9
1940
5
1941
24
1942
21
1943
11
1944
9
1945
13
1946
8
1947
30
1948
15
1949
17
1950
7
1951
6
1952
14
1953
12
1954
8
1955
9
1956
26
1957
16
1958
9
1959
11
1960
7
1961
19
1962
21
1963
11
1964
17
1965
11
1966
9
1967
10
1968
15
1969
16
1970
1
1971
17
1972
10
1973
15
1974
17
1975
12
1976
20
1977
12
1978
11
1979
10
1980
15
1981
16
1982
2
1983
18
1984
12
1985
21
1986
30
1987
9
1988
4
1989
9
1990
19
1991
7
1992
8
1993
16
1994
14
1995
6
1996
13
1997
9
1998
17
All-Time Record Progression
5 new records
5 all-time records were set at Arnsberg between 23 July 1911 and 1 February 1956. Each dot is a new record.
When Arnsberg set new all-time records
Date
Kind
Detail
1911-07-23
Record high maximum temperature
Record high maximum temperature 35.4 C (95.7 F)
1942-01-27
Record low minimum temperature
Record low minimum temperature -24.8 C (-12.6 F)
1947-06-27
Record high maximum temperature
Record high maximum temperature 36.6 C (97.9 F)
1952-07-06
Record high minimum temperature
Record high minimum temperature 21.7 C (71.1 F)
1956-02-01
Record low maximum temperature
Record low maximum temperature -14.5 C (5.9 F)
Wettest Day of Each Month
Jun: 85.4 mm (3.4 in)
The wettest day on record for each calendar month at Arnsberg. The most was 85.4 mm (3.4 in) on 7 June 1905.
Record daily precipitation for each month at Arnsberg
Month
Record daily precipitation (mm)
Date
Jan
42.9 mm (1.7 in)
3 January 1932
Feb
52.0 mm (2.0 in)
3 February 1909
Mar
34.1 mm (1.3 in)
31 March 1969
Apr
62.6 mm (2.5 in)
30 April 1922
May
67.2 mm (2.6 in)
7 May 1931
Jun
85.4 mm (3.4 in)
7 June 1905
Jul
63.0 mm (2.5 in)
29 July 1898
Aug
75.5 mm (3.0 in)
2 August 1948
Sep
60.6 mm (2.4 in)
14 September 1998
Oct
54.6 mm (2.1 in)
27 October 1935
Nov
76.0 mm (3.0 in)
3 November 1940
Dec
37.6 mm (1.5 in)
22 December 1947
Period of Record Coverage
1880 to 1998
Complete yearUnder 90 percent of days
119 years of record at Arnsberg, 1880 to 1998. 6 years have data for under 90 percent of days and are left out of rankings: 1939, 1940, 1942, 1945, 1946, 1998.
Cooler than the station meanWarmer than the station mean
One stripe for each of 111 complete years at Arnsberg, 1880 to 1997. Blue stripes are years cooler than the station's own mean of 8.8 C (47.8 F); red stripes are warmer. The coolest year was 1996, at 7.1 C (44.8 F), and the warmest was 1921, at 10.0 C (49.9 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Arnsberg as warming stripes, 1880 to 1997
Year
Annual mean temperature
Difference from the station mean
1880
9.1 C
+0.32 C
1881
8.2 C
-0.60 C
1882
9.3 C
+0.53 C
1883
8.8 C
+0.04 C
1884
9.5 C
+0.69 C
1885
8.6 C
-0.18 C
1886
8.8 C
+0.02 C
1887
7.4 C
-1.41 C
1888
7.6 C
-1.21 C
1889
8.2 C
-0.63 C
1890
7.9 C
-0.91 C
1891
8.3 C
-0.52 C
1892
8.3 C
-0.47 C
1893
8.9 C
+0.10 C
1894
8.9 C
+0.16 C
1895
8.0 C
-0.81 C
1896
8.4 C
-0.34 C
1897
9.1 C
+0.29 C
1898
9.5 C
+0.69 C
1899
9.0 C
+0.21 C
1900
9.1 C
+0.35 C
1901
8.4 C
-0.40 C
1902
8.2 C
-0.63 C
1903
9.2 C
+0.46 C
1904
9.0 C
+0.19 C
1905
8.7 C
-0.05 C
1906
9.1 C
+0.35 C
1907
8.8 C
-0.02 C
1908
8.4 C
-0.40 C
1909
8.1 C
-0.66 C
1911
9.9 C
+1.13 C
1912
9.2 C
+0.40 C
1913
9.6 C
+0.86 C
1914
9.5 C
+0.73 C
1915
8.8 C
+0.05 C
1916
9.4 C
+0.63 C
1917
8.3 C
-0.50 C
1918
9.6 C
+0.85 C
1919
8.2 C
-0.62 C
1920
9.9 C
+1.07 C
1921
10.0 C
+1.19 C
1922
8.1 C
-0.65 C
1923
9.0 C
+0.18 C
1924
8.7 C
-0.11 C
1925
9.3 C
+0.47 C
1926
9.5 C
+0.67 C
1927
8.8 C
+0.01 C
1928
9.1 C
+0.28 C
1929
8.3 C
-0.44 C
1930
9.6 C
+0.78 C
1931
8.4 C
-0.41 C
1932
8.8 C
-0.02 C
1933
8.1 C
-0.66 C
1934
9.7 C
+0.96 C
1935
8.8 C
+0.03 C
1936
8.9 C
+0.15 C
1937
9.1 C
+0.36 C
1938
9.0 C
+0.24 C
1941
8.0 C
-0.81 C
1943
9.5 C
+0.74 C
1947
9.4 C
+0.62 C
1948
9.8 C
+0.98 C
1949
9.7 C
+0.95 C
1950
9.2 C
+0.39 C
1951
9.3 C
+0.54 C
1952
8.3 C
-0.49 C
1953
9.4 C
+0.64 C
1954
8.3 C
-0.45 C
1955
8.1 C
-0.68 C
1956
7.4 C
-1.35 C
1957
9.3 C
+0.47 C
1958
8.9 C
+0.13 C
1959
9.7 C
+0.93 C
1960
9.3 C
+0.49 C
1961
9.7 C
+0.87 C
1962
7.7 C
-1.04 C
1963
7.8 C
-1.02 C
1964
9.0 C
+0.18 C
1965
7.9 C
-0.89 C
1966
8.9 C
+0.15 C
1967
9.2 C
+0.40 C
1968
8.5 C
-0.26 C
1969
8.4 C
-0.41 C
1970
8.3 C
-0.49 C
1971
8.7 C
-0.04 C
1972
8.1 C
-0.65 C
1973
8.5 C
-0.29 C
1974
8.9 C
+0.16 C
1975
9.1 C
+0.35 C
1976
8.8 C
+0.01 C
1977
8.9 C
+0.08 C
1978
8.0 C
-0.74 C
1979
8.0 C
-0.82 C
1980
8.1 C
-0.65 C
1981
8.7 C
-0.12 C
1982
9.4 C
+0.59 C
1983
9.3 C
+0.50 C
1984
8.5 C
-0.32 C
1985
7.6 C
-1.21 C
1986
8.1 C
-0.66 C
1987
7.8 C
-1.02 C
1988
9.1 C
+0.35 C
1989
9.4 C
+0.59 C
1990
9.7 C
+0.89 C
1991
8.3 C
-0.51 C
1992
9.2 C
+0.38 C
1993
8.4 C
-0.39 C
1994
9.7 C
+0.95 C
1995
9.0 C
+0.23 C
1996
7.1 C
-1.65 C
1997
9.3 C
+0.56 C
The fitted trend in annual mean temperature here over 1880 to 1997 is -0.01 C (-0.04 to 0.03) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.01 F (-0.07 to 0.05) per decade. The slope is a straight line fitted to 111 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Arnsberg
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.01 C (-0.04 to 0.03) per decade
-0.01 F (-0.07 to 0.05) per decade
1880 to 1997
111
Not clearly different from zero
Mean daily maximum
0.00 C (-0.04 to 0.04) per decade
0.00 F (-0.08 to 0.07) per decade
1880 to 1997
111
Not clearly different from zero
Mean daily minimum
-0.01 C (-0.05 to 0.02) per decade
-0.02 F (-0.08 to 0.04) per decade
1880 to 1997
111
Not clearly different from zero
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
1880 to 1998
Yearly extremes at Arnsberg: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
36.6 C (97.9 F)
1947
31.5 C (88.7 F)
119
Coldest night (TNn)
-24.8 C (-12.6 F)
1942
-15.0 C (5.0 F)
119
Wettest day (Rx1day)
85.4 mm (3.4 in)
1905
36.3 mm (1.4 in)
119
Wettest five days (Rx5day)
158.4 mm (6.2 in)
1910
72.4 mm (2.9 in)
119
Longest dry spell (CDD)
33 days
1951
18 days
119
Hottest day (TXx)
The hottest day of the year at Arnsberg, 1880 to 1998. The record is 36.6 C (97.9 F) in 1947, marked on the chart; the median year is 31.5 C (88.7 F).
Hottest day (TXx) at Arnsberg by year
Year
Hottest day (TXx)
1880
29.9 C (85.8 F)
1881
34.0 C (93.2 F)
1882
29.3 C (84.7 F)
1883
31.8 C (89.2 F)
1884
31.4 C (88.5 F)
1885
29.4 C (84.9 F)
1886
30.8 C (87.4 F)
1887
31.2 C (88.2 F)
1888
29.3 C (84.7 F)
1889
29.5 C (85.1 F)
1890
29.2 C (84.6 F)
1891
28.6 C (83.5 F)
1892
33.6 C (92.5 F)
1893
31.0 C (87.8 F)
1894
32.1 C (89.8 F)
1895
30.0 C (86.0 F)
1896
29.0 C (84.2 F)
1897
30.5 C (86.9 F)
1898
31.8 C (89.2 F)
1899
31.4 C (88.5 F)
1900
32.9 C (91.2 F)
1901
30.8 C (87.4 F)
1902
31.0 C (87.8 F)
1903
29.4 C (84.9 F)
1904
33.9 C (93.0 F)
1905
31.6 C (88.9 F)
1906
29.4 C (84.9 F)
1907
30.3 C (86.5 F)
1908
32.0 C (89.6 F)
1909
30.6 C (87.1 F)
1910
28.8 C (83.8 F)
1911
35.4 C (95.7 F)
1912
30.5 C (86.9 F)
1913
27.8 C (82.0 F)
1914
30.0 C (86.0 F)
1915
32.5 C (90.5 F)
1916
29.0 C (84.2 F)
1917
32.0 C (89.6 F)
1918
31.4 C (88.5 F)
1919
31.9 C (89.4 F)
1920
31.7 C (89.1 F)
1921
33.8 C (92.8 F)
1922
33.0 C (91.4 F)
1923
35.3 C (95.5 F)
1924
34.2 C (93.6 F)
1925
33.8 C (92.8 F)
1926
29.8 C (85.6 F)
1927
31.2 C (88.2 F)
1928
31.4 C (88.5 F)
1929
32.9 C (91.2 F)
1930
31.7 C (89.1 F)
1931
30.6 C (87.1 F)
1932
35.1 C (95.2 F)
1933
32.0 C (89.6 F)
1934
31.0 C (87.8 F)
1935
31.1 C (88.0 F)
1936
30.6 C (87.1 F)
1937
32.8 C (91.0 F)
1938
32.3 C (90.1 F)
1939
32.5 C (90.5 F)
1940
28.5 C (83.3 F)
1941
34.0 C (93.2 F)
1942
32.2 C (90.0 F)
1943
32.8 C (91.0 F)
1944
35.1 C (95.2 F)
1945
16.0 C (60.8 F)
1946
33.5 C (92.3 F)
1947
36.6 C (97.9 F)
1948
32.6 C (90.7 F)
1949
33.3 C (91.9 F)
1950
31.1 C (88.0 F)
1951
30.8 C (87.4 F)
1952
34.2 C (93.6 F)
1953
31.6 C (88.9 F)
1954
29.2 C (84.6 F)
1955
30.0 C (86.0 F)
1956
29.0 C (84.2 F)
1957
34.6 C (94.3 F)
1958
30.6 C (87.1 F)
1959
34.5 C (94.1 F)
1960
29.4 C (84.9 F)
1961
32.0 C (89.6 F)
1962
28.9 C (84.0 F)
1963
33.7 C (92.7 F)
1964
34.5 C (94.1 F)
1965
28.5 C (83.3 F)
1966
32.5 C (90.5 F)
1967
31.0 C (87.8 F)
1968
31.5 C (88.7 F)
1969
33.0 C (91.4 F)
1970
30.6 C (87.1 F)
1971
32.8 C (91.0 F)
1972
31.5 C (88.7 F)
1973
33.6 C (92.5 F)
1974
32.2 C (90.0 F)
1975
32.5 C (90.5 F)
1976
35.8 C (96.4 F)
1977
31.6 C (88.9 F)
1978
30.2 C (86.4 F)
1979
30.2 C (86.4 F)
1980
29.0 C (84.2 F)
1981
30.3 C (86.5 F)
1982
31.1 C (88.0 F)
1983
33.0 C (91.4 F)
1984
32.2 C (90.0 F)
1985
31.9 C (89.4 F)
1986
34.7 C (94.5 F)
1987
30.8 C (87.4 F)
1988
29.1 C (84.4 F)
1989
30.5 C (86.9 F)
1990
35.2 C (95.4 F)
1991
32.0 C (89.6 F)
1992
33.4 C (92.1 F)
1993
29.2 C (84.6 F)
1994
33.9 C (93.0 F)
1995
33.0 C (91.4 F)
1996
31.2 C (88.2 F)
1997
30.4 C (86.7 F)
1998
32.0 C (89.6 F)
Coldest night (TNn)
The coldest night of the year at Arnsberg, 1880 to 1998. The record is -24.8 C (-12.6 F) in 1942, marked on the chart; the median year is -15.0 C (5.0 F).
Coldest night (TNn) at Arnsberg by year
Year
Coldest night (TNn)
1880
-21.3 C (-6.3 F)
1881
-23.5 C (-10.3 F)
1882
-8.8 C (16.2 F)
1883
-12.0 C (10.4 F)
1884
-14.3 C (6.3 F)
1885
-14.3 C (6.3 F)
1886
-19.5 C (-3.1 F)
1887
-15.6 C (3.9 F)
1888
-18.0 C (-0.4 F)
1889
-20.7 C (-5.3 F)
1890
-17.2 C (1.0 F)
1891
-21.7 C (-7.1 F)
1892
-13.8 C (7.2 F)
1893
-20.5 C (-4.9 F)
1894
-17.8 C (0.0 F)
1895
-23.2 C (-9.8 F)
1896
-9.3 C (15.3 F)
1897
-10.0 C (14.0 F)
1898
-6.4 C (20.5 F)
1899
-15.5 C (4.1 F)
1900
-13.6 C (7.5 F)
1901
-20.3 C (-4.5 F)
1902
-14.0 C (6.8 F)
1903
-13.1 C (8.4 F)
1904
-10.0 C (14.0 F)
1905
-15.7 C (3.7 F)
1906
-12.9 C (8.8 F)
1907
-16.0 C (3.2 F)
1908
-18.5 C (-1.3 F)
1909
-13.0 C (8.6 F)
1910
-8.3 C (17.1 F)
1911
-11.0 C (12.2 F)
1912
-18.0 C (-0.4 F)
1913
-10.4 C (13.3 F)
1914
-14.4 C (6.1 F)
1915
-16.9 C (1.6 F)
1916
-8.0 C (17.6 F)
1917
-19.3 C (-2.7 F)
1918
-9.6 C (14.7 F)
1919
-16.1 C (3.0 F)
1920
-10.1 C (13.8 F)
1921
-12.1 C (10.2 F)
1922
-19.5 C (-3.1 F)
1923
-20.0 C (-4.0 F)
1924
-13.0 C (8.6 F)
1925
-17.0 C (1.4 F)
1926
-12.5 C (9.5 F)
1927
-16.5 C (2.3 F)
1928
-10.5 C (13.1 F)
1929
-20.2 C (-4.4 F)
1930
-8.8 C (16.2 F)
1931
-14.7 C (5.5 F)
1932
-14.7 C (5.5 F)
1933
-15.6 C (3.9 F)
1934
-16.8 C (1.8 F)
1935
-12.8 C (9.0 F)
1936
-13.2 C (8.2 F)
1937
-13.3 C (8.1 F)
1938
-19.6 C (-3.3 F)
1939
-8.5 C (16.7 F)
1940
-19.0 C (-2.2 F)
1941
-17.0 C (1.4 F)
1942
-24.8 C (-12.6 F)
1943
-15.8 C (3.6 F)
1944
-15.7 C (3.7 F)
1945
-15.7 C (3.7 F)
1946
-6.0 C (21.2 F)
1947
-19.8 C (-3.6 F)
1948
-12.7 C (9.1 F)
1949
-14.0 C (6.8 F)
1950
-17.3 C (0.9 F)
1951
-8.5 C (16.7 F)
1952
-13.5 C (7.7 F)
1953
-15.0 C (5.0 F)
1954
-17.7 C (0.1 F)
1955
-15.2 C (4.6 F)
1956
-21.5 C (-6.7 F)
1957
-13.2 C (8.2 F)
1958
-14.1 C (6.6 F)
1959
-11.0 C (12.2 F)
1960
-21.0 C (-5.8 F)
1961
-13.9 C (7.0 F)
1962
-15.3 C (4.5 F)
1963
-21.8 C (-7.2 F)
1964
-13.2 C (8.2 F)
1965
-13.5 C (7.7 F)
1966
-19.2 C (-2.6 F)
1967
-11.9 C (10.6 F)
1968
-22.2 C (-8.0 F)
1969
-16.4 C (2.5 F)
1970
-14.2 C (6.4 F)
1971
-17.8 C (0.0 F)
1972
-16.3 C (2.7 F)
1973
-14.5 C (5.9 F)
1974
-8.4 C (16.9 F)
1975
-12.5 C (9.5 F)
1976
-16.5 C (2.3 F)
1977
-10.7 C (12.7 F)
1978
-17.2 C (1.0 F)
1979
-20.0 C (-4.0 F)
1980
-12.3 C (9.9 F)
1981
-16.5 C (2.3 F)
1982
-18.7 C (-1.7 F)
1983
-14.3 C (6.3 F)
1984
-10.8 C (12.6 F)
1985
-20.1 C (-4.2 F)
1986
-21.0 C (-5.8 F)
1987
-19.8 C (-3.6 F)
1988
-10.3 C (13.5 F)
1989
-9.0 C (15.8 F)
1990
-6.5 C (20.3 F)
1991
-17.0 C (1.4 F)
1992
-11.5 C (11.3 F)
1993
-15.0 C (5.0 F)
1994
-13.7 C (7.3 F)
1995
-13.7 C (7.3 F)
1996
-16.7 C (1.9 F)
1997
-19.0 C (-2.2 F)
1998
-12.3 C (9.9 F)
Wettest day (Rx1day)
The wettest day of the year at Arnsberg, 1880 to 1998. The record is 85.4 mm (3.4 in) in 1905, marked on the chart; the median year is 36.3 mm (1.4 in).
Wettest day (Rx1day) at Arnsberg by year
Year
Wettest day (Rx1day)
1880
36.7 mm (1.4 in)
1881
43.0 mm (1.7 in)
1882
30.6 mm (1.2 in)
1883
30.0 mm (1.2 in)
1884
53.9 mm (2.1 in)
1885
28.8 mm (1.1 in)
1886
32.8 mm (1.3 in)
1887
40.0 mm (1.6 in)
1888
42.1 mm (1.7 in)
1889
36.3 mm (1.4 in)
1890
62.7 mm (2.5 in)
1891
44.2 mm (1.7 in)
1892
22.5 mm (0.9 in)
1893
32.4 mm (1.3 in)
1894
39.9 mm (1.6 in)
1895
30.1 mm (1.2 in)
1896
28.7 mm (1.1 in)
1897
36.0 mm (1.4 in)
1898
63.0 mm (2.5 in)
1899
34.8 mm (1.4 in)
1900
22.1 mm (0.9 in)
1901
34.1 mm (1.3 in)
1902
30.5 mm (1.2 in)
1903
28.8 mm (1.1 in)
1904
47.5 mm (1.9 in)
1905
85.4 mm (3.4 in)
1906
39.0 mm (1.5 in)
1907
23.9 mm (0.9 in)
1908
34.6 mm (1.4 in)
1909
52.0 mm (2.0 in)
1910
69.9 mm (2.8 in)
1911
22.2 mm (0.9 in)
1912
37.9 mm (1.5 in)
1913
27.9 mm (1.1 in)
1914
28.8 mm (1.1 in)
1915
34.4 mm (1.4 in)
1916
40.0 mm (1.6 in)
1917
29.8 mm (1.2 in)
1918
35.5 mm (1.4 in)
1919
23.3 mm (0.9 in)
1920
37.5 mm (1.5 in)
1921
38.1 mm (1.5 in)
1922
62.6 mm (2.5 in)
1923
37.5 mm (1.5 in)
1924
32.9 mm (1.3 in)
1925
33.5 mm (1.3 in)
1926
49.6 mm (2.0 in)
1927
39.6 mm (1.6 in)
1928
47.2 mm (1.9 in)
1929
30.9 mm (1.2 in)
1930
28.6 mm (1.1 in)
1931
67.2 mm (2.6 in)
1932
42.9 mm (1.7 in)
1933
66.1 mm (2.6 in)
1934
42.1 mm (1.7 in)
1935
54.6 mm (2.1 in)
1936
55.5 mm (2.2 in)
1937
31.7 mm (1.2 in)
1938
61.8 mm (2.4 in)
1939
29.7 mm (1.2 in)
1940
76.0 mm (3.0 in)
1941
47.4 mm (1.9 in)
1942
26.8 mm (1.1 in)
1943
32.7 mm (1.3 in)
1944
36.4 mm (1.4 in)
1945
26.6 mm (1.0 in)
1946
28.6 mm (1.1 in)
1947
37.6 mm (1.5 in)
1948
75.5 mm (3.0 in)
1949
42.3 mm (1.7 in)
1950
28.9 mm (1.1 in)
1951
24.3 mm (1.0 in)
1952
37.9 mm (1.5 in)
1953
43.3 mm (1.7 in)
1954
42.7 mm (1.7 in)
1955
34.9 mm (1.4 in)
1956
56.7 mm (2.2 in)
1957
31.9 mm (1.3 in)
1958
50.8 mm (2.0 in)
1959
20.4 mm (0.8 in)
1960
39.6 mm (1.6 in)
1961
48.2 mm (1.9 in)
1962
28.9 mm (1.1 in)
1963
36.0 mm (1.4 in)
1964
28.9 mm (1.1 in)
1965
35.3 mm (1.4 in)
1966
39.1 mm (1.5 in)
1967
31.7 mm (1.2 in)
1968
59.2 mm (2.3 in)
1969
50.6 mm (2.0 in)
1970
30.3 mm (1.2 in)
1971
49.7 mm (2.0 in)
1972
30.6 mm (1.2 in)
1973
24.8 mm (1.0 in)
1974
36.6 mm (1.4 in)
1975
35.8 mm (1.4 in)
1976
29.0 mm (1.1 in)
1977
36.2 mm (1.4 in)
1978
65.9 mm (2.6 in)
1979
29.5 mm (1.2 in)
1980
38.8 mm (1.5 in)
1981
55.6 mm (2.2 in)
1982
31.1 mm (1.2 in)
1983
41.2 mm (1.6 in)
1984
50.5 mm (2.0 in)
1985
37.4 mm (1.5 in)
1986
43.7 mm (1.7 in)
1987
33.9 mm (1.3 in)
1988
24.8 mm (1.0 in)
1989
23.8 mm (0.9 in)
1990
35.5 mm (1.4 in)
1991
32.9 mm (1.3 in)
1992
50.1 mm (2.0 in)
1993
42.8 mm (1.7 in)
1994
36.4 mm (1.4 in)
1995
30.9 mm (1.2 in)
1996
31.7 mm (1.2 in)
1997
25.4 mm (1.0 in)
1998
60.6 mm (2.4 in)
Wettest five days (Rx5day)
The wettest five days of the year at Arnsberg, 1880 to 1998. The record is 158.4 mm (6.2 in) in 1910, marked on the chart; the median year is 72.4 mm (2.9 in).
Wettest five days (Rx5day) at Arnsberg by year
Year
Wettest five days (Rx5day)
1880
75.5 mm (3.0 in)
1881
92.8 mm (3.7 in)
1882
74.0 mm (2.9 in)
1883
59.1 mm (2.3 in)
1884
71.8 mm (2.8 in)
1885
59.5 mm (2.3 in)
1886
50.3 mm (2.0 in)
1887
55.5 mm (2.2 in)
1888
65.9 mm (2.6 in)
1889
49.8 mm (2.0 in)
1890
122.1 mm (4.8 in)
1891
82.0 mm (3.2 in)
1892
43.3 mm (1.7 in)
1893
57.0 mm (2.2 in)
1894
63.4 mm (2.5 in)
1895
90.4 mm (3.6 in)
1896
55.6 mm (2.2 in)
1897
76.3 mm (3.0 in)
1898
94.6 mm (3.7 in)
1899
79.1 mm (3.1 in)
1900
56.1 mm (2.2 in)
1901
69.6 mm (2.7 in)
1902
54.0 mm (2.1 in)
1903
48.3 mm (1.9 in)
1904
72.4 mm (2.9 in)
1905
96.9 mm (3.8 in)
1906
67.4 mm (2.7 in)
1907
92.2 mm (3.6 in)
1908
75.9 mm (3.0 in)
1909
127.3 mm (5.0 in)
1910
158.4 mm (6.2 in)
1911
61.4 mm (2.4 in)
1912
74.3 mm (2.9 in)
1913
56.0 mm (2.2 in)
1914
60.0 mm (2.4 in)
1915
70.3 mm (2.8 in)
1916
74.6 mm (2.9 in)
1917
67.3 mm (2.6 in)
1918
65.0 mm (2.6 in)
1919
85.0 mm (3.3 in)
1920
78.6 mm (3.1 in)
1921
58.9 mm (2.3 in)
1922
77.9 mm (3.1 in)
1923
73.7 mm (2.9 in)
1924
63.0 mm (2.5 in)
1925
88.6 mm (3.5 in)
1926
93.3 mm (3.7 in)
1927
65.1 mm (2.6 in)
1928
85.0 mm (3.3 in)
1929
98.1 mm (3.9 in)
1930
72.1 mm (2.8 in)
1931
73.9 mm (2.9 in)
1932
89.0 mm (3.5 in)
1933
117.7 mm (4.6 in)
1934
54.2 mm (2.1 in)
1935
80.6 mm (3.2 in)
1936
85.8 mm (3.4 in)
1937
57.2 mm (2.3 in)
1938
69.6 mm (2.7 in)
1939
46.1 mm (1.8 in)
1940
126.9 mm (5.0 in)
1941
94.0 mm (3.7 in)
1942
62.0 mm (2.4 in)
1943
45.3 mm (1.8 in)
1944
60.7 mm (2.4 in)
1945
54.9 mm (2.2 in)
1946
61.9 mm (2.4 in)
1947
88.6 mm (3.5 in)
1948
85.1 mm (3.4 in)
1949
80.5 mm (3.2 in)
1950
57.5 mm (2.3 in)
1951
56.6 mm (2.2 in)
1952
81.8 mm (3.2 in)
1953
80.0 mm (3.1 in)
1954
75.3 mm (3.0 in)
1955
65.3 mm (2.6 in)
1956
108.7 mm (4.3 in)
1957
82.0 mm (3.2 in)
1958
81.0 mm (3.2 in)
1959
44.3 mm (1.7 in)
1960
68.6 mm (2.7 in)
1961
78.4 mm (3.1 in)
1962
75.7 mm (3.0 in)
1963
49.9 mm (2.0 in)
1964
52.1 mm (2.1 in)
1965
80.2 mm (3.2 in)
1966
80.1 mm (3.2 in)
1967
56.5 mm (2.2 in)
1968
106.5 mm (4.2 in)
1969
102.9 mm (4.1 in)
1970
70.4 mm (2.8 in)
1971
75.7 mm (3.0 in)
1972
71.5 mm (2.8 in)
1973
59.9 mm (2.4 in)
1974
59.9 mm (2.4 in)
1975
63.0 mm (2.5 in)
1976
62.7 mm (2.5 in)
1977
72.8 mm (2.9 in)
1978
94.7 mm (3.7 in)
1979
61.9 mm (2.4 in)
1980
64.9 mm (2.6 in)
1981
93.1 mm (3.7 in)
1982
59.6 mm (2.3 in)
1983
71.1 mm (2.8 in)
1984
98.3 mm (3.9 in)
1985
64.4 mm (2.5 in)
1986
89.9 mm (3.5 in)
1987
90.2 mm (3.6 in)
1988
63.5 mm (2.5 in)
1989
67.7 mm (2.7 in)
1990
93.6 mm (3.7 in)
1991
90.4 mm (3.6 in)
1992
82.2 mm (3.2 in)
1993
65.1 mm (2.6 in)
1994
72.7 mm (2.9 in)
1995
78.0 mm (3.1 in)
1996
61.1 mm (2.4 in)
1997
56.2 mm (2.2 in)
1998
114.0 mm (4.5 in)
Longest dry spell (CDD)
The longest dry spell of the year at Arnsberg, 1880 to 1998. The record is 33 days in 1951, marked on the chart; the median year is 18 days.
Longest dry spell (CDD) at Arnsberg by year
Year
Longest dry spell (CDD)
1880
21 days
1881
19 days
1882
18 days
1883
21 days
1884
14 days
1885
20 days
1886
20 days
1887
19 days
1888
16 days
1889
18 days
1890
24 days
1891
18 days
1892
16 days
1893
22 days
1894
24 days
1895
17 days
1896
15 days
1897
26 days
1898
12 days
1899
17 days
1900
12 days
1901
19 days
1902
24 days
1903
17 days
1904
17 days
1905
14 days
1906
14 days
1907
16 days
1908
25 days
1909
12 days
1910
12 days
1911
19 days
1912
18 days
1913
13 days
1914
17 days
1915
22 days
1916
15 days
1917
30 days
1918
13 days
1919
22 days
1920
28 days
1921
29 days
1922
15 days
1923
32 days
1924
20 days
1925
13 days
1926
11 days
1927
19 days
1928
31 days
1929
20 days
1930
24 days
1931
16 days
1932
22 days
1933
20 days
1934
21 days
1935
13 days
1936
13 days
1937
24 days
1938
15 days
1939
14 days
1940
19 days
1941
17 days
1942
20 days
1943
17 days
1944
18 days
1945
8 days
1946
18 days
1947
16 days
1948
19 days
1949
18 days
1950
13 days
1951
33 days
1952
12 days
1953
14 days
1954
17 days
1955
16 days
1956
20 days
1957
13 days
1958
15 days
1959
27 days
1960
16 days
1961
16 days
1962
27 days
1963
19 days
1964
19 days
1965
12 days
1966
15 days
1967
9 days
1968
25 days
1969
12 days
1970
12 days
1971
20 days
1972
22 days
1973
22 days
1974
21 days
1975
16 days
1976
25 days
1977
13 days
1978
17 days
1979
13 days
1980
14 days
1981
13 days
1982
30 days
1983
15 days
1984
21 days
1985
23 days
1986
22 days
1987
14 days
1988
15 days
1989
20 days
1990
19 days
1991
17 days
1992
21 days
1993
16 days
1994
21 days
1995
21 days
1996
15 days
1997
27 days
1998
18 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
111 years with a frost
Across 111 years with a frost, the median last spring frost at Arnsberg falls on 3 May and the median first autumn frost on 20 October, which leaves a median of 169 days between them.
In 1968 to 1997 the median growing season was 169 days. That is 2 days more than in 1880 to 1909.
Fitted over all years, the growing season changes by 0.0 days per decade at this station.
Frost dates and growing season at Arnsberg
Measure
Median, all years
Earliest period (1880 to 1909)
Recent period (1968 to 1997)
Recent against earliest
Fitted trend
Last spring frost
3 May
5 May
2 May
3 days earlier
-0.1 days per decade
First autumn frost
20 October
20 October
20 October
no change
-0.1 days per decade
Growing days
169 days
167 days
169 days
2 days more
0.0 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
114 years, 1880 to 1997
A day with at least 36.6 mm (1.4 in) of rain is expected about once in 2 years. A day with at least 84.1 mm (3.3 in) of rain is expected about once in 100 years.
Rainfall return levels at Arnsberg: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
36.6 mm (1.4 in)
5 years
47.4 mm (1.9 in)
10 years
55.3 mm (2.2 in)
25 years
66.1 mm (2.6 in)
50 years
74.8 mm (2.9 in)
100 years
84.1 mm (3.3 in)
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 114 years of values from 1880 to 1997.
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: 85.4 mm (3.4 in) in 1905; 75.5 mm (3.0 in) in 1948; 69.9 mm (2.8 in) in 1910.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Arnsberg, at 1988. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1988 ran 0.2 C (0.4 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Arnsberg, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1988
-0.2
-0.4
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 Arnsberg standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Arnsberg 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.