Record envelope, standing records and threshold days for Clark (USC00391739), South Dakota, United States, with 120 years of record.
Key Facts for Clark
Clark (USC00391739) is a weather station in South Dakota, United States at 44.88 latitude and -97.73 longitude, 550 m (1,804 ft) above sea level.
The station reports from 1893 to 2012, 120 years of record.
1,464 records set at Clark still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Clark set a daily record precipitation of 30.5 mm (1.2 in) on 15 April 2012.
About the Station
Location: South Dakota, United States, 44.88 latitude, -97.73 longitude.
Elevation: 550 m (1,804 ft).
Period of record: 1893 to 2012, 120 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
0 days at or beyond a record
Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Clark. 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 Clark, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
18.9 C (66.0 F)
-41.1 C (-42.0 F)
n/a
n/a
Feb
19.4 C (66.9 F)
-40.0 C (-40.0 F)
n/a
n/a
Mar
29.4 C (84.9 F)
-32.8 C (-27.0 F)
n/a
n/a
Apr
35.0 C (95.0 F)
-22.2 C (-8.0 F)
n/a
n/a
May
41.7 C (107.1 F)
-8.9 C (16.0 F)
n/a
n/a
Jun
42.2 C (108.0 F)
-2.2 C (28.0 F)
n/a
n/a
Jul
43.3 C (109.9 F)
3.3 C (37.9 F)
n/a
n/a
Aug
42.2 C (108.0 F)
0.0 C (32.0 F)
n/a
n/a
Sep
40.0 C (104.0 F)
-9.4 C (15.1 F)
n/a
n/a
Oct
35.6 C (96.1 F)
-22.2 C (-8.0 F)
n/a
n/a
Nov
25.6 C (78.1 F)
-30.0 C (-22.0 F)
n/a
n/a
Dec
17.2 C (63.0 F)
-37.2 C (-35.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Clark still stand. 1931 holds the most, with 46.
Standing records at Clark by the year they were set
Year set
Standing records
1893
2
1894
19
1895
6
1896
12
1897
2
1900
16
1901
15
1902
14
1903
14
1904
11
1905
20
1906
8
1907
15
1908
12
1909
16
1910
22
1911
21
1912
13
1913
13
1914
7
1915
16
1916
20
1917
24
1918
13
1919
14
1920
5
1921
26
1922
6
1923
9
1924
15
1925
22
1926
15
1927
21
1928
22
1929
14
1930
19
1931
46
1932
11
1933
23
1934
40
1935
17
1936
39
1937
19
1938
2
1939
32
1940
10
1941
16
1942
8
1943
10
1944
16
1945
15
1946
10
1947
12
1948
12
1949
6
1950
10
1951
16
1952
11
1953
14
1954
8
1955
17
1956
11
1957
2
1958
11
1959
11
1960
6
1961
6
1962
16
1963
8
1964
14
1965
11
1966
11
1967
4
1968
11
1969
12
1970
4
1971
4
1972
12
1973
3
1974
10
1975
7
1976
13
1977
15
1978
5
1979
10
1980
9
1981
8
1982
6
1983
13
1984
8
1985
20
1986
5
1987
13
1988
11
1989
15
1990
13
1991
24
1992
18
1993
4
1994
12
1995
3
1996
11
1997
14
1998
6
1999
8
2000
14
2001
3
2002
7
2003
7
2004
5
2005
3
2006
6
2007
7
2008
5
2009
11
2011
8
2012
11
All-Time Record Progression
5 new records
5 all-time records were set at Clark between 21 July 1934 and 5 February 1946. Each dot is a new record.
When Clark set new all-time records
Date
Kind
Detail
1934-07-21
Record high maximum temperature
Record high maximum temperature 42.8 C (109.0 F)
1935-04-04
Record daily snowfall
Record daily snowfall 33.0 cm (13.0 in)
1936-07-17
Record high maximum temperature
Record high maximum temperature 43.3 C (109.9 F)
1936-07-17
Record high minimum temperature
Record high minimum temperature 29.4 C (84.9 F)
1946-02-05
Record daily snowfall
Record daily snowfall 35.6 cm (14.0 in)
Wettest Day of Each Month
Sep: 119.4 mm (4.7 in)
The wettest day on record for each calendar month at Clark. The most was 119.4 mm (4.7 in) on 8 September 1900.
Record daily precipitation for each month at Clark
Month
Record daily precipitation (mm)
Date
Jan
28.4 mm (1.1 in)
21 January 1917
Feb
27.9 mm (1.1 in)
29 February 2012
Mar
52.1 mm (2.1 in)
31 March 2006
Apr
70.6 mm (2.8 in)
13 April 1912
May
113.5 mm (4.5 in)
5 May 2007
Jun
95.3 mm (3.8 in)
15 June 1977
Jul
112.3 mm (4.4 in)
25 July 1997
Aug
101.9 mm (4.0 in)
4 August 1900
Sep
119.4 mm (4.7 in)
8 September 1900
Oct
96.5 mm (3.8 in)
6 October 1946
Nov
32.5 mm (1.3 in)
8 November 1977
Dec
38.1 mm (1.5 in)
11 December 1949
Period of Record Coverage
1893 to 2012
Complete yearUnder 90 percent of days
118 years of record at Clark, 1893 to 2012. 14 years have data for under 90 percent of days and are left out of rankings: 1893, 1894, 1895, 1896, 1897, 1903, 1919, 1920 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 99 complete years at Clark, 1900 to 2011. Blue stripes are years cooler than the station's own mean of 6.3 C (43.3 F); red stripes are warmer. The coolest year was 1996, at 3.9 C (39.1 F), and the warmest was 1931, at 9.2 C (48.6 F). The strongest colour marks a difference of 3.0 C (5.4 F).
Annual mean temperature at Clark as warming stripes, 1900 to 2011
Year
Annual mean temperature
Difference from the station mean
1900
7.2 C
+0.94 C
1901
6.8 C
+0.54 C
1904
5.2 C
-1.10 C
1905
5.7 C
-0.55 C
1906
5.6 C
-0.67 C
1907
4.8 C
-1.49 C
1908
6.4 C
+0.16 C
1909
5.0 C
-1.29 C
1910
6.4 C
+0.08 C
1911
5.7 C
-0.53 C
1912
4.9 C
-1.40 C
1914
6.4 C
+0.11 C
1915
5.9 C
-0.34 C
1917
4.0 C
-2.29 C
1918
6.4 C
+0.14 C
1921
7.6 C
+1.34 C
1922
6.1 C
-0.17 C
1923
6.5 C
+0.20 C
1924
4.6 C
-1.72 C
1925
6.7 C
+0.41 C
1928
6.9 C
+0.65 C
1929
5.2 C
-1.09 C
1930
7.0 C
+0.72 C
1931
9.2 C
+2.96 C
1932
6.0 C
-0.30 C
1933
7.4 C
+1.14 C
1934
7.9 C
+1.65 C
1935
5.8 C
-0.46 C
1936
5.0 C
-1.27 C
1937
5.3 C
-0.97 C
1938
7.1 C
+0.85 C
1939
7.9 C
+1.58 C
1940
6.5 C
+0.22 C
1941
7.5 C
+1.22 C
1942
6.7 C
+0.41 C
1943
6.2 C
-0.12 C
1944
7.0 C
+0.72 C
1945
5.8 C
-0.48 C
1946
6.8 C
+0.57 C
1948
5.9 C
-0.40 C
1950
4.6 C
-1.64 C
1951
4.4 C
-1.88 C
1952
6.9 C
+0.59 C
1953
7.2 C
+0.94 C
1954
7.3 C
+0.99 C
1955
6.5 C
+0.21 C
1956
6.0 C
-0.26 C
1957
6.4 C
+0.15 C
1958
7.0 C
+0.73 C
1959
6.5 C
+0.21 C
1960
5.8 C
-0.43 C
1961
6.5 C
+0.25 C
1962
6.2 C
-0.08 C
1963
6.9 C
+0.60 C
1965
5.6 C
-0.64 C
1966
5.8 C
-0.51 C
1967
6.2 C
-0.03 C
1968
6.5 C
+0.23 C
1969
5.8 C
-0.44 C
1970
6.1 C
-0.17 C
1971
6.2 C
-0.12 C
1972
5.1 C
-1.14 C
1974
7.2 C
+0.96 C
1975
6.5 C
+0.18 C
1976
7.5 C
+1.25 C
1977
7.0 C
+0.68 C
1978
5.6 C
-0.68 C
1979
5.3 C
-0.94 C
1980
7.4 C
+1.14 C
1981
8.3 C
+2.04 C
1982
5.8 C
-0.49 C
1983
7.0 C
+0.71 C
1984
6.8 C
+0.49 C
1985
5.4 C
-0.90 C
1986
6.7 C
+0.38 C
1987
8.5 C
+2.18 C
1988
6.6 C
+0.30 C
1989
5.2 C
-1.06 C
1990
6.9 C
+0.61 C
1991
6.7 C
+0.40 C
1992
6.0 C
-0.32 C
1993
4.3 C
-1.93 C
1994
5.6 C
-0.72 C
1995
5.5 C
-0.82 C
1996
3.9 C
-2.33 C
1997
5.5 C
-0.80 C
1998
7.6 C
+1.35 C
1999
7.4 C
+1.09 C
2001
6.7 C
+0.38 C
2002
6.5 C
+0.19 C
2003
6.2 C
-0.09 C
2004
6.5 C
+0.24 C
2005
7.3 C
+0.99 C
2006
7.6 C
+1.28 C
2007
6.3 C
+0.06 C
2008
4.9 C
-1.38 C
2009
4.8 C
-1.43 C
2010
6.3 C
+0.02 C
2011
5.6 C
-0.67 C
The fitted trend in annual mean temperature here over 1900 to 2011 is 0.01 C (-0.05 to 0.08) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.03 F (-0.09 to 0.14) per decade. The slope is a straight line fitted to 99 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Clark
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.01 C (-0.05 to 0.08) per decade
0.03 F (-0.09 to 0.14) per decade
1900 to 2011
99
Not clearly different from zero
Mean daily maximum
-0.10 C (-0.17 to -0.02) per decade
-0.18 F (-0.31 to -0.04) per decade
1900 to 2011
99
Fall
Mean daily minimum
0.1 C (0.1 to 0.2) per decade
0.2 F (0.1 to 0.3) per decade
1900 to 2011
99
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
1893 to 2012
Yearly extremes at Clark: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
43.3 C (109.9 F)
1936
36.7 C (98.1 F)
118
Coldest night (TNn)
-41.1 C (-42.0 F)
1912
-32.8 C (-27.0 F)
118
Wettest day (Rx1day)
119.4 mm (4.7 in)
1900
48.6 mm (1.9 in)
120
Wettest five days (Rx5day)
170.7 mm (6.7 in)
2007
72.6 mm (2.9 in)
120
Longest dry spell (CDD)
63 days
1952
28 days
120
Hottest day (TXx)
The hottest day of the year at Clark, 1893 to 2012. The record is 43.3 C (109.9 F) in 1936, marked on the chart; the median year is 36.7 C (98.1 F).
Hottest day (TXx) at Clark by year
Year
Hottest day (TXx)
1893
32.8 C (91.0 F)
1894
42.2 C (108.0 F)
1895
27.8 C (82.0 F)
1896
36.7 C (98.1 F)
1897
30.0 C (86.0 F)
1898
n/a
1899
n/a
1900
35.6 C (96.1 F)
1901
40.6 C (105.1 F)
1902
36.7 C (98.1 F)
1903
36.7 C (98.1 F)
1904
37.2 C (99.0 F)
1905
33.9 C (93.0 F)
1906
37.2 C (99.0 F)
1907
34.4 C (93.9 F)
1908
36.7 C (98.1 F)
1909
34.4 C (93.9 F)
1910
35.6 C (96.1 F)
1911
37.8 C (100.0 F)
1912
35.0 C (95.0 F)
1913
37.2 C (99.0 F)
1914
36.1 C (97.0 F)
1915
32.8 C (91.0 F)
1916
36.1 C (97.0 F)
1917
37.8 C (100.0 F)
1918
33.3 C (91.9 F)
1919
35.6 C (96.1 F)
1920
34.4 C (93.9 F)
1921
36.1 C (97.0 F)
1922
37.2 C (99.0 F)
1923
34.4 C (93.9 F)
1924
32.2 C (90.0 F)
1925
38.9 C (102.0 F)
1926
39.4 C (102.9 F)
1927
35.6 C (96.1 F)
1928
38.9 C (102.0 F)
1929
39.4 C (102.9 F)
1930
41.1 C (106.0 F)
1931
41.7 C (107.1 F)
1932
40.0 C (104.0 F)
1933
42.2 C (108.0 F)
1934
42.8 C (109.0 F)
1935
37.2 C (99.0 F)
1936
43.3 C (109.9 F)
1937
42.2 C (108.0 F)
1938
38.9 C (102.0 F)
1939
38.3 C (100.9 F)
1940
43.3 C (109.9 F)
1941
41.1 C (106.0 F)
1942
35.0 C (95.0 F)
1943
36.7 C (98.1 F)
1944
35.0 C (95.0 F)
1945
35.0 C (95.0 F)
1946
36.1 C (97.0 F)
1947
40.0 C (104.0 F)
1948
35.6 C (96.1 F)
1949
39.4 C (102.9 F)
1950
35.0 C (95.0 F)
1951
34.4 C (93.9 F)
1952
37.2 C (99.0 F)
1953
35.6 C (96.1 F)
1954
38.3 C (100.9 F)
1955
39.4 C (102.9 F)
1956
36.1 C (97.0 F)
1957
37.8 C (100.0 F)
1958
39.4 C (102.9 F)
1959
38.3 C (100.9 F)
1960
36.7 C (98.1 F)
1961
36.1 C (97.0 F)
1962
35.0 C (95.0 F)
1963
37.2 C (99.0 F)
1964
39.4 C (102.9 F)
1965
40.0 C (104.0 F)
1966
40.6 C (105.1 F)
1967
35.0 C (95.0 F)
1968
35.0 C (95.0 F)
1969
33.9 C (93.0 F)
1970
37.2 C (99.0 F)
1971
36.1 C (97.0 F)
1972
34.4 C (93.9 F)
1973
37.8 C (100.0 F)
1974
37.8 C (100.0 F)
1975
40.0 C (104.0 F)
1976
40.6 C (105.1 F)
1977
37.8 C (100.0 F)
1978
36.7 C (98.1 F)
1979
37.2 C (99.0 F)
1980
37.2 C (99.0 F)
1981
35.6 C (96.1 F)
1982
36.1 C (97.0 F)
1983
37.2 C (99.0 F)
1984
36.7 C (98.1 F)
1985
37.2 C (99.0 F)
1986
33.9 C (93.0 F)
1987
38.3 C (100.9 F)
1988
41.1 C (106.0 F)
1989
35.6 C (96.1 F)
1990
36.1 C (97.0 F)
1991
37.2 C (99.0 F)
1992
33.3 C (91.9 F)
1993
32.2 C (90.0 F)
1994
32.8 C (91.0 F)
1995
33.9 C (93.0 F)
1996
32.8 C (91.0 F)
1997
34.4 C (93.9 F)
1998
35.0 C (95.0 F)
1999
35.0 C (95.0 F)
2000
35.6 C (96.1 F)
2001
35.6 C (96.1 F)
2002
40.0 C (104.0 F)
2003
37.8 C (100.0 F)
2004
33.3 C (91.9 F)
2005
38.9 C (102.0 F)
2006
41.1 C (106.0 F)
2007
37.2 C (99.0 F)
2008
33.3 C (91.9 F)
2009
35.0 C (95.0 F)
2010
34.4 C (93.9 F)
2011
36.1 C (97.0 F)
2012
30.0 C (86.0 F)
Coldest night (TNn)
The coldest night of the year at Clark, 1893 to 2012. The record is -41.1 C (-42.0 F) in 1912, marked on the chart; the median year is -32.8 C (-27.0 F).
Coldest night (TNn) at Clark by year
Year
Coldest night (TNn)
1893
-21.1 C (-6.0 F)
1894
-36.1 C (-33.0 F)
1895
-36.1 C (-33.0 F)
1896
-30.6 C (-23.1 F)
1897
-4.4 C (24.1 F)
1898
n/a
1899
n/a
1900
-31.7 C (-25.1 F)
1901
-35.6 C (-32.1 F)
1902
-33.9 C (-29.0 F)
1903
-34.4 C (-29.9 F)
1904
-33.9 C (-29.0 F)
1905
-40.0 C (-40.0 F)
1906
-30.6 C (-23.1 F)
1907
-36.7 C (-34.1 F)
1908
-29.4 C (-20.9 F)
1909
-36.1 C (-33.0 F)
1910
-32.2 C (-26.0 F)
1911
-33.9 C (-29.0 F)
1912
-41.1 C (-42.0 F)
1913
-32.8 C (-27.0 F)
1914
-33.9 C (-29.0 F)
1915
-34.4 C (-29.9 F)
1916
-40.6 C (-41.1 F)
1917
-38.9 C (-38.0 F)
1918
-35.6 C (-32.1 F)
1919
-35.6 C (-32.1 F)
1920
-28.3 C (-18.9 F)
1921
-30.0 C (-22.0 F)
1922
-33.9 C (-29.0 F)
1923
-29.4 C (-20.9 F)
1924
-37.2 C (-35.0 F)
1925
-32.2 C (-26.0 F)
1926
-32.2 C (-26.0 F)
1927
-32.8 C (-27.0 F)
1928
-32.8 C (-27.0 F)
1929
-39.4 C (-38.9 F)
1930
-36.7 C (-34.1 F)
1931
-27.8 C (-18.0 F)
1932
-32.2 C (-26.0 F)
1933
-33.9 C (-29.0 F)
1934
-29.4 C (-20.9 F)
1935
-32.2 C (-26.0 F)
1936
-39.4 C (-38.9 F)
1937
-32.2 C (-26.0 F)
1938
-33.9 C (-29.0 F)
1939
-36.1 C (-33.0 F)
1940
-35.0 C (-31.0 F)
1941
-30.0 C (-22.0 F)
1942
-34.4 C (-29.9 F)
1943
-36.7 C (-34.1 F)
1944
-31.7 C (-25.1 F)
1945
-31.1 C (-24.0 F)
1946
-31.7 C (-25.1 F)
1947
-23.3 C (-9.9 F)
1948
-35.6 C (-32.1 F)
1949
-23.9 C (-11.0 F)
1950
-32.8 C (-27.0 F)
1951
-34.4 C (-29.9 F)
1952
-30.6 C (-23.1 F)
1953
-27.2 C (-17.0 F)
1954
-35.0 C (-31.0 F)
1955
-33.3 C (-27.9 F)
1956
-33.9 C (-29.0 F)
1957
-33.3 C (-27.9 F)
1958
-33.3 C (-27.9 F)
1959
-30.6 C (-23.1 F)
1960
-31.7 C (-25.1 F)
1961
-33.9 C (-29.0 F)
1962
-33.3 C (-27.9 F)
1963
-35.0 C (-31.0 F)
1964
-30.0 C (-22.0 F)
1965
-31.7 C (-25.1 F)
1966
-36.7 C (-34.1 F)
1967
-37.2 C (-35.0 F)
1968
-33.9 C (-29.0 F)
1969
-30.0 C (-22.0 F)
1970
-35.6 C (-32.1 F)
1971
-33.3 C (-27.9 F)
1972
-37.2 C (-35.0 F)
1973
-30.6 C (-23.1 F)
1974
-32.2 C (-26.0 F)
1975
-29.4 C (-20.9 F)
1976
-31.1 C (-24.0 F)
1977
-33.3 C (-27.9 F)
1978
-32.2 C (-26.0 F)
1979
-32.8 C (-27.0 F)
1980
-29.4 C (-20.9 F)
1981
-31.1 C (-24.0 F)
1982
-35.0 C (-31.0 F)
1983
-36.1 C (-33.0 F)
1984
-33.3 C (-27.9 F)
1985
-35.0 C (-31.0 F)
1986
-29.4 C (-20.9 F)
1987
-29.4 C (-20.9 F)
1988
-33.3 C (-27.9 F)
1989
-35.6 C (-32.1 F)
1990
-33.9 C (-29.0 F)
1991
-26.1 C (-15.0 F)
1992
-27.8 C (-18.0 F)
1993
-30.6 C (-23.1 F)
1994
-37.8 C (-36.0 F)
1995
-26.7 C (-16.1 F)
1996
-37.2 C (-35.0 F)
1997
-30.0 C (-22.0 F)
1998
-29.4 C (-20.9 F)
1999
-31.1 C (-24.0 F)
2000
-29.4 C (-20.9 F)
2001
-29.4 C (-20.9 F)
2002
-23.9 C (-11.0 F)
2003
-30.0 C (-22.0 F)
2004
-30.0 C (-22.0 F)
2005
-31.1 C (-24.0 F)
2006
-26.1 C (-15.0 F)
2007
-30.0 C (-22.0 F)
2008
-31.1 C (-24.0 F)
2009
-34.4 C (-29.9 F)
2010
-32.8 C (-27.0 F)
2011
-29.4 C (-20.9 F)
2012
-25.0 C (-13.0 F)
Wettest day (Rx1day)
The wettest day of the year at Clark, 1893 to 2012. The record is 119.4 mm (4.7 in) in 1900, marked on the chart; the median year is 48.6 mm (1.9 in).
Wettest day (Rx1day) at Clark by year
Year
Wettest day (Rx1day)
1893
43.9 mm (1.7 in)
1894
57.2 mm (2.3 in)
1895
18.5 mm (0.7 in)
1896
52.1 mm (2.1 in)
1897
40.1 mm (1.6 in)
1898
33.0 mm (1.3 in)
1899
53.8 mm (2.1 in)
1900
119.4 mm (4.7 in)
1901
91.2 mm (3.6 in)
1902
36.6 mm (1.4 in)
1903
48.0 mm (1.9 in)
1904
45.0 mm (1.8 in)
1905
41.1 mm (1.6 in)
1906
52.1 mm (2.1 in)
1907
39.4 mm (1.6 in)
1908
37.6 mm (1.5 in)
1909
51.3 mm (2.0 in)
1910
42.2 mm (1.7 in)
1911
36.1 mm (1.4 in)
1912
72.9 mm (2.9 in)
1913
58.9 mm (2.3 in)
1914
63.0 mm (2.5 in)
1915
44.2 mm (1.7 in)
1916
101.6 mm (4.0 in)
1917
44.2 mm (1.7 in)
1918
66.8 mm (2.6 in)
1919
93.5 mm (3.7 in)
1920
56.4 mm (2.2 in)
1921
51.6 mm (2.0 in)
1922
23.9 mm (0.9 in)
1923
64.0 mm (2.5 in)
1924
53.3 mm (2.1 in)
1925
53.8 mm (2.1 in)
1926
85.9 mm (3.4 in)
1927
69.9 mm (2.8 in)
1928
71.1 mm (2.8 in)
1929
33.5 mm (1.3 in)
1930
66.5 mm (2.6 in)
1931
43.2 mm (1.7 in)
1932
35.8 mm (1.4 in)
1933
37.6 mm (1.5 in)
1934
38.9 mm (1.5 in)
1935
55.4 mm (2.2 in)
1936
33.0 mm (1.3 in)
1937
46.0 mm (1.8 in)
1938
35.8 mm (1.4 in)
1939
37.1 mm (1.5 in)
1940
50.8 mm (2.0 in)
1941
51.8 mm (2.0 in)
1942
51.6 mm (2.0 in)
1943
57.9 mm (2.3 in)
1944
59.9 mm (2.4 in)
1945
78.7 mm (3.1 in)
1946
96.5 mm (3.8 in)
1947
35.3 mm (1.4 in)
1948
99.1 mm (3.9 in)
1949
47.8 mm (1.9 in)
1950
50.0 mm (2.0 in)
1951
33.0 mm (1.3 in)
1952
32.5 mm (1.3 in)
1953
52.1 mm (2.1 in)
1954
31.2 mm (1.2 in)
1955
27.7 mm (1.1 in)
1956
64.5 mm (2.5 in)
1957
48.3 mm (1.9 in)
1958
21.3 mm (0.8 in)
1959
41.9 mm (1.6 in)
1960
54.9 mm (2.2 in)
1961
86.4 mm (3.4 in)
1962
43.2 mm (1.7 in)
1963
53.3 mm (2.1 in)
1964
32.3 mm (1.3 in)
1965
36.1 mm (1.4 in)
1966
73.9 mm (2.9 in)
1967
19.8 mm (0.8 in)
1968
37.6 mm (1.5 in)
1969
72.4 mm (2.9 in)
1970
45.0 mm (1.8 in)
1971
58.9 mm (2.3 in)
1972
58.4 mm (2.3 in)
1973
31.2 mm (1.2 in)
1974
30.7 mm (1.2 in)
1975
39.6 mm (1.6 in)
1976
30.2 mm (1.2 in)
1977
95.3 mm (3.8 in)
1978
38.1 mm (1.5 in)
1979
41.1 mm (1.6 in)
1980
37.1 mm (1.5 in)
1981
47.5 mm (1.9 in)
1982
77.2 mm (3.0 in)
1983
32.0 mm (1.3 in)
1984
53.6 mm (2.1 in)
1985
95.8 mm (3.8 in)
1986
65.8 mm (2.6 in)
1987
69.1 mm (2.7 in)
1988
54.1 mm (2.1 in)
1989
34.8 mm (1.4 in)
1990
46.2 mm (1.8 in)
1991
47.2 mm (1.9 in)
1992
37.3 mm (1.5 in)
1993
71.4 mm (2.8 in)
1994
67.1 mm (2.6 in)
1995
96.8 mm (3.8 in)
1996
36.1 mm (1.4 in)
1997
112.3 mm (4.4 in)
1998
73.7 mm (2.9 in)
1999
43.2 mm (1.7 in)
2000
26.7 mm (1.1 in)
2001
66.5 mm (2.6 in)
2002
46.0 mm (1.8 in)
2003
41.1 mm (1.6 in)
2004
43.9 mm (1.7 in)
2005
36.8 mm (1.4 in)
2006
84.1 mm (3.3 in)
2007
113.5 mm (4.5 in)
2008
62.5 mm (2.5 in)
2009
48.8 mm (1.9 in)
2010
56.6 mm (2.2 in)
2011
49.0 mm (1.9 in)
2012
30.5 mm (1.2 in)
Wettest five days (Rx5day)
The wettest five days of the year at Clark, 1893 to 2012. The record is 170.7 mm (6.7 in) in 2007, marked on the chart; the median year is 72.6 mm (2.9 in).
Wettest five days (Rx5day) at Clark by year
Year
Wettest five days (Rx5day)
1893
50.1 mm (2.0 in)
1894
61.0 mm (2.4 in)
1895
23.5 mm (0.9 in)
1896
79.4 mm (3.1 in)
1897
51.3 mm (2.0 in)
1898
43.2 mm (1.7 in)
1899
78.7 mm (3.1 in)
1900
136.4 mm (5.4 in)
1901
133.2 mm (5.2 in)
1902
45.3 mm (1.8 in)
1903
72.3 mm (2.8 in)
1904
53.1 mm (2.1 in)
1905
76.0 mm (3.0 in)
1906
67.8 mm (2.7 in)
1907
52.8 mm (2.1 in)
1908
83.1 mm (3.3 in)
1909
104.4 mm (4.1 in)
1910
42.2 mm (1.7 in)
1911
37.9 mm (1.5 in)
1912
85.9 mm (3.4 in)
1913
75.1 mm (3.0 in)
1914
111.7 mm (4.4 in)
1915
67.3 mm (2.6 in)
1916
124.8 mm (4.9 in)
1917
58.1 mm (2.3 in)
1918
97.0 mm (3.8 in)
1919
94.8 mm (3.7 in)
1920
64.0 mm (2.5 in)
1921
91.0 mm (3.6 in)
1922
64.1 mm (2.5 in)
1923
75.9 mm (3.0 in)
1924
70.4 mm (2.8 in)
1925
65.5 mm (2.6 in)
1926
99.4 mm (3.9 in)
1927
96.3 mm (3.8 in)
1928
71.1 mm (2.8 in)
1929
40.9 mm (1.6 in)
1930
80.8 mm (3.2 in)
1931
57.9 mm (2.3 in)
1932
49.3 mm (1.9 in)
1933
42.4 mm (1.7 in)
1934
40.6 mm (1.6 in)
1935
76.2 mm (3.0 in)
1936
36.0 mm (1.4 in)
1937
66.1 mm (2.6 in)
1938
60.7 mm (2.4 in)
1939
48.6 mm (1.9 in)
1940
92.2 mm (3.6 in)
1941
61.0 mm (2.4 in)
1942
67.6 mm (2.7 in)
1943
116.8 mm (4.6 in)
1944
67.3 mm (2.6 in)
1945
107.2 mm (4.2 in)
1946
128.3 mm (5.1 in)
1947
45.5 mm (1.8 in)
1948
118.7 mm (4.7 in)
1949
57.5 mm (2.3 in)
1950
75.7 mm (3.0 in)
1951
61.2 mm (2.4 in)
1952
64.7 mm (2.5 in)
1953
141.7 mm (5.6 in)
1954
32.5 mm (1.3 in)
1955
44.7 mm (1.8 in)
1956
161.8 mm (6.4 in)
1957
74.2 mm (2.9 in)
1958
28.1 mm (1.1 in)
1959
62.4 mm (2.5 in)
1960
85.4 mm (3.4 in)
1961
104.9 mm (4.1 in)
1962
86.6 mm (3.4 in)
1963
71.5 mm (2.8 in)
1964
34.8 mm (1.4 in)
1965
76.8 mm (3.0 in)
1966
86.9 mm (3.4 in)
1967
46.0 mm (1.8 in)
1968
72.9 mm (2.9 in)
1969
98.3 mm (3.9 in)
1970
100.4 mm (4.0 in)
1971
60.2 mm (2.4 in)
1972
67.8 mm (2.7 in)
1973
38.0 mm (1.5 in)
1974
38.4 mm (1.5 in)
1975
52.8 mm (2.1 in)
1976
30.2 mm (1.2 in)
1977
116.1 mm (4.6 in)
1978
50.8 mm (2.0 in)
1979
82.6 mm (3.3 in)
1980
68.6 mm (2.7 in)
1981
56.7 mm (2.2 in)
1982
94.8 mm (3.7 in)
1983
43.3 mm (1.7 in)
1984
77.5 mm (3.1 in)
1985
108.6 mm (4.3 in)
1986
89.4 mm (3.5 in)
1987
77.2 mm (3.0 in)
1988
96.0 mm (3.8 in)
1989
54.1 mm (2.1 in)
1990
74.9 mm (2.9 in)
1991
79.8 mm (3.1 in)
1992
102.2 mm (4.0 in)
1993
87.4 mm (3.4 in)
1994
107.3 mm (4.2 in)
1995
110.7 mm (4.4 in)
1996
46.7 mm (1.8 in)
1997
140.0 mm (5.5 in)
1998
96.2 mm (3.8 in)
1999
86.6 mm (3.4 in)
2000
37.8 mm (1.5 in)
2001
89.5 mm (3.5 in)
2002
56.7 mm (2.2 in)
2003
44.1 mm (1.7 in)
2004
58.4 mm (2.3 in)
2005
85.4 mm (3.4 in)
2006
94.2 mm (3.7 in)
2007
170.7 mm (6.7 in)
2008
68.7 mm (2.7 in)
2009
91.0 mm (3.6 in)
2010
96.2 mm (3.8 in)
2011
56.1 mm (2.2 in)
2012
73.6 mm (2.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at Clark, 1893 to 2012. The record is 63 days in 1952, marked on the chart; the median year is 28 days.
Longest dry spell (CDD) at Clark by year
Year
Longest dry spell (CDD)
1893
11 days
1894
28 days
1895
13 days
1896
23 days
1897
23 days
1898
40 days
1899
55 days
1900
25 days
1901
37 days
1902
24 days
1903
25 days
1904
43 days
1905
19 days
1906
25 days
1907
36 days
1908
25 days
1909
35 days
1910
35 days
1911
37 days
1912
54 days
1913
51 days
1914
44 days
1915
33 days
1916
16 days
1917
21 days
1918
19 days
1919
23 days
1920
16 days
1921
25 days
1922
28 days
1923
36 days
1924
20 days
1925
42 days
1926
20 days
1927
17 days
1928
30 days
1929
17 days
1930
22 days
1931
25 days
1932
20 days
1933
42 days
1934
55 days
1935
35 days
1936
35 days
1937
27 days
1938
26 days
1939
60 days
1940
33 days
1941
40 days
1942
38 days
1943
54 days
1944
34 days
1945
30 days
1946
35 days
1947
16 days
1948
31 days
1949
28 days
1950
31 days
1951
33 days
1952
63 days
1953
26 days
1954
29 days
1955
21 days
1956
23 days
1957
27 days
1958
44 days
1959
31 days
1960
28 days
1961
35 days
1962
22 days
1963
31 days
1964
33 days
1965
23 days
1966
24 days
1967
25 days
1968
22 days
1969
17 days
1970
21 days
1971
35 days
1972
19 days
1973
22 days
1974
30 days
1975
21 days
1976
35 days
1977
26 days
1978
35 days
1979
27 days
1980
31 days
1981
30 days
1982
28 days
1983
34 days
1984
27 days
1985
19 days
1986
43 days
1987
25 days
1988
32 days
1989
35 days
1990
54 days
1991
25 days
1992
24 days
1993
21 days
1994
17 days
1995
23 days
1996
18 days
1997
26 days
1998
48 days
1999
45 days
2000
22 days
2001
29 days
2002
36 days
2003
28 days
2004
33 days
2005
31 days
2006
36 days
2007
39 days
2008
44 days
2009
14 days
2010
39 days
2011
40 days
2012
28 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
99 years with a frost
Across 99 years with a frost, the median last spring frost at Clark falls on 12 May and the median first autumn frost on 28 September, which leaves a median of 139 days between them.
In 1981 to 2011 the median growing season was 146 days. That is 19 days more than in 1900 to 1937.
Fitted over all years, the growing season changes by +2.9 days per decade at this station.
Frost dates and growing season at Clark
Measure
Median, all years
Earliest period (1900 to 1937)
Recent period (1981 to 2011)
Recent against earliest
Fitted trend
Last spring frost
12 May
21 May
8 May
13 days earlier
-1.7 days per decade
First autumn frost
28 September
24 September
2 October
8 days later
+1.1 days per decade
Growing days
139 days
127 days
146 days
19 days more
+2.9 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
105 years, 1899 to 2011
A day with at least 49.2 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 130.4 mm (5.1 in) of rain is expected about once in 100 years.
Rainfall return levels at Clark: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
49.2 mm (1.9 in)
5 years
67.8 mm (2.7 in)
10 years
81.3 mm (3.2 in)
25 years
99.8 mm (3.9 in)
50 years
114.6 mm (4.5 in)
100 years
130.4 mm (5.1 in)
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 105 years of values from 1899 to 2011.
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: 119.4 mm (4.7 in) in 1900; 113.5 mm (4.5 in) in 2007; 112.3 mm (4.4 in) in 1997.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Clark standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Clark 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.