Record envelope, standing records and threshold days for Clarkson (USC00251660), Nebraska, United States, with 65 years of record.
Key Facts for Clarkson
Clarkson (USC00251660) is a weather station in Nebraska, United States at 41.72 latitude and -97.13 longitude, 472 m (1,550 ft) above sea level.
The station reports from 1940 to 2004, 65 years of record.
1,464 records set at Clarkson still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Clarkson tied a daily record high minimum temperature of 16.1 C (61.0 F) on 18 April 2004.
About the Station
Location: Nebraska, United States, 41.72 latitude, -97.13 longitude.
Elevation: 472 m (1,550 ft).
Period of record: 1940 to 2004, 65 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 Clarkson. 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 Clarkson, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
23.9 C (75.0 F)
-35.0 C (-31.0 F)
n/a
n/a
Feb
24.4 C (75.9 F)
-32.8 C (-27.0 F)
n/a
n/a
Mar
32.2 C (90.0 F)
-28.9 C (-20.0 F)
n/a
n/a
Apr
36.1 C (97.0 F)
-13.9 C (7.0 F)
n/a
n/a
May
38.3 C (100.9 F)
-5.6 C (21.9 F)
n/a
n/a
Jun
41.1 C (106.0 F)
0.6 C (33.1 F)
n/a
n/a
Jul
43.9 C (111.0 F)
4.4 C (39.9 F)
n/a
n/a
Aug
41.1 C (106.0 F)
2.2 C (36.0 F)
n/a
n/a
Sep
37.8 C (100.0 F)
-6.1 C (21.0 F)
n/a
n/a
Oct
33.9 C (93.0 F)
-13.3 C (8.1 F)
n/a
n/a
Nov
28.3 C (82.9 F)
-26.1 C (-15.0 F)
n/a
n/a
Dec
20.0 C (68.0 F)
-32.8 C (-27.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Clarkson still stand. 1941 holds the most, with 47.
Standing records at Clarkson by the year they were set
Year set
Standing records
1940
10
1941
47
1942
27
1943
35
1944
28
1945
30
1946
28
1947
27
1948
19
1949
16
1950
24
1951
22
1952
26
1953
20
1954
32
1955
45
1956
22
1957
19
1958
18
1959
17
1960
23
1961
13
1962
39
1963
15
1964
17
1965
13
1966
18
1967
27
1968
27
1969
19
1970
21
1971
19
1972
28
1973
10
1974
38
1975
17
1976
23
1977
17
1978
24
1979
21
1980
16
1981
27
1982
8
1983
21
1984
14
1985
26
1986
15
1987
21
1988
27
1989
34
1990
26
1991
32
1992
18
1993
21
1994
25
1995
20
1996
31
1997
28
1998
16
1999
14
2000
26
2001
14
2002
21
2003
16
2004
6
All-Time Record Progression
1 new records
1 all-time records were set at Clarkson between 12 January 1974 and 12 January 1974. Each dot is a new record.
When Clarkson set new all-time records
Date
Kind
Detail
1974-01-12
Record low minimum temperature
Record low minimum temperature -35.0 C (-31.0 F)
Wettest Day of Each Month
Jun: 158.8 mm (6.3 in)
The wettest day on record for each calendar month at Clarkson. The most was 158.8 mm (6.3 in) on 11 June 1944.
Record daily precipitation for each month at Clarkson
Month
Record daily precipitation (mm)
Date
Jan
35.8 mm (1.4 in)
3 January 1949
Feb
45.2 mm (1.8 in)
18 February 1971
Mar
139.7 mm (5.5 in)
15 March 2004
Apr
66.8 mm (2.6 in)
26 April 1985
May
109.2 mm (4.3 in)
6 May 2003
Jun
158.8 mm (6.3 in)
11 June 1944
Jul
92.7 mm (3.6 in)
14 July 1966
Aug
125.0 mm (4.9 in)
22 August 1995
Sep
108.7 mm (4.3 in)
4 September 1989
Oct
84.8 mm (3.3 in)
30 October 1979
Nov
51.8 mm (2.0 in)
11 November 1982
Dec
37.1 mm (1.5 in)
10 December 1970
Period of Record Coverage
1940 to 2004
Complete yearUnder 90 percent of days
65 years of record at Clarkson, 1940 to 2004. 4 years have data for under 90 percent of days and are left out of rankings: 1940, 1948, 1992, 2004.
Cooler than the station meanWarmer than the station mean
One stripe for each of 55 complete years at Clarkson, 1941 to 2003. Blue stripes are years cooler than the station's own mean of 9.6 C (49.3 F); red stripes are warmer. The coolest year was 1993, at 7.5 C (45.5 F), and the warmest was 1987, at 11.3 C (52.4 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Clarkson as warming stripes, 1941 to 2003
Year
Annual mean temperature
Difference from the station mean
1941
11.3 C
+1.65 C
1942
9.9 C
+0.24 C
1943
10.0 C
+0.43 C
1944
10.0 C
+0.42 C
1945
9.7 C
+0.10 C
1946
11.2 C
+1.56 C
1949
9.7 C
+0.08 C
1950
8.4 C
-1.22 C
1951
8.1 C
-1.47 C
1952
10.1 C
+0.48 C
1953
10.8 C
+1.21 C
1954
11.1 C
+1.49 C
1956
10.6 C
+0.94 C
1957
9.9 C
+0.27 C
1958
9.7 C
+0.07 C
1959
9.1 C
-0.54 C
1960
7.8 C
-1.82 C
1961
9.5 C
-0.15 C
1962
9.6 C
-0.04 C
1963
10.4 C
+0.77 C
1966
8.7 C
-0.89 C
1967
9.4 C
-0.26 C
1968
9.6 C
-0.05 C
1969
8.8 C
-0.83 C
1970
9.5 C
-0.11 C
1971
9.6 C
-0.02 C
1972
9.3 C
-0.34 C
1973
10.3 C
+0.72 C
1974
10.5 C
+0.85 C
1975
9.4 C
-0.19 C
1976
10.0 C
+0.37 C
1977
10.4 C
+0.74 C
1979
8.3 C
-1.34 C
1980
10.3 C
+0.68 C
1981
10.7 C
+1.10 C
1982
8.8 C
-0.84 C
1983
9.2 C
-0.39 C
1984
9.5 C
-0.16 C
1985
8.7 C
-0.92 C
1986
10.4 C
+0.83 C
1987
11.3 C
+1.71 C
1988
10.2 C
+0.61 C
1989
8.7 C
-0.94 C
1990
9.8 C
+0.23 C
1991
9.9 C
+0.32 C
1993
7.5 C
-2.09 C
1994
8.9 C
-0.71 C
1995
8.8 C
-0.84 C
1996
7.6 C
-2.03 C
1997
8.9 C
-0.75 C
1998
10.3 C
+0.66 C
1999
10.1 C
+0.44 C
2000
9.6 C
-0.03 C
2001
9.8 C
+0.17 C
2003
9.2 C
-0.41 C
The fitted trend in annual mean temperature here over 1941 to 2003 is -0.12 C (-0.25 to 0.01) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.22 F (-0.45 to 0.02) per decade. The slope is a straight line fitted to 55 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Clarkson
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.12 C (-0.25 to 0.01) per decade
-0.22 F (-0.45 to 0.02) per decade
1941 to 2003
55
Not clearly different from zero
Mean daily maximum
-0.2 C (-0.4 to -0.1) per decade
-0.4 F (-0.7 to -0.1) per decade
1941 to 2003
55
Fall
Mean daily minimum
-0.03 C (-0.16 to 0.11) per decade
-0.1 F (-0.3 to 0.2) per decade
1941 to 2003
55
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
1940 to 2004
Yearly extremes at Clarkson: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
43.9 C (111.0 F)
1954
37.8 C (100.0 F)
65
Coldest night (TNn)
-35.0 C (-31.0 F)
1974
-26.7 C (-16.1 F)
65
Wettest day (Rx1day)
158.8 mm (6.3 in)
1944
60.5 mm (2.4 in)
65
Wettest five days (Rx5day)
284.3 mm (11.2 in)
1990
91.6 mm (3.6 in)
65
Longest dry spell (CDD)
63 days
1958
31 days
65
Hottest day (TXx)
The hottest day of the year at Clarkson, 1940 to 2004. The record is 43.9 C (111.0 F) in 1954, marked on the chart; the median year is 37.8 C (100.0 F).
Hottest day (TXx) at Clarkson by year
Year
Hottest day (TXx)
1940
15.0 C (59.0 F)
1941
40.6 C (105.1 F)
1942
39.4 C (102.9 F)
1943
39.4 C (102.9 F)
1944
37.8 C (100.0 F)
1945
36.7 C (98.1 F)
1946
41.1 C (106.0 F)
1947
40.6 C (105.1 F)
1948
38.3 C (100.9 F)
1949
35.6 C (96.1 F)
1950
35.6 C (96.1 F)
1951
38.3 C (100.9 F)
1952
40.6 C (105.1 F)
1953
39.4 C (102.9 F)
1954
43.9 C (111.0 F)
1955
40.0 C (104.0 F)
1956
41.1 C (106.0 F)
1957
38.3 C (100.9 F)
1958
35.6 C (96.1 F)
1959
35.0 C (95.0 F)
1960
36.1 C (97.0 F)
1961
40.6 C (105.1 F)
1962
36.7 C (98.1 F)
1963
36.7 C (98.1 F)
1964
40.6 C (105.1 F)
1965
37.2 C (99.0 F)
1966
40.0 C (104.0 F)
1967
38.3 C (100.9 F)
1968
36.7 C (98.1 F)
1969
37.8 C (100.0 F)
1970
38.3 C (100.9 F)
1971
38.3 C (100.9 F)
1972
36.1 C (97.0 F)
1973
37.2 C (99.0 F)
1974
40.6 C (105.1 F)
1975
36.7 C (98.1 F)
1976
37.2 C (99.0 F)
1977
36.7 C (98.1 F)
1978
38.3 C (100.9 F)
1979
39.4 C (102.9 F)
1980
38.3 C (100.9 F)
1981
37.8 C (100.0 F)
1982
36.7 C (98.1 F)
1983
41.1 C (106.0 F)
1984
37.2 C (99.0 F)
1985
38.3 C (100.9 F)
1986
35.6 C (96.1 F)
1987
37.8 C (100.0 F)
1988
41.1 C (106.0 F)
1989
37.8 C (100.0 F)
1990
38.9 C (102.0 F)
1991
37.2 C (99.0 F)
1992
33.9 C (93.0 F)
1993
33.9 C (93.0 F)
1994
35.6 C (96.1 F)
1995
41.1 C (106.0 F)
1996
34.4 C (93.9 F)
1997
36.1 C (97.0 F)
1998
36.1 C (97.0 F)
1999
36.7 C (98.1 F)
2000
36.7 C (98.1 F)
2001
36.1 C (97.0 F)
2002
38.3 C (100.9 F)
2003
36.7 C (98.1 F)
2004
32.2 C (90.0 F)
Coldest night (TNn)
The coldest night of the year at Clarkson, 1940 to 2004. The record is -35.0 C (-31.0 F) in 1974, marked on the chart; the median year is -26.7 C (-16.1 F).
Coldest night (TNn) at Clarkson by year
Year
Coldest night (TNn)
1940
-23.3 C (-9.9 F)
1941
-20.0 C (-4.0 F)
1942
-27.8 C (-18.0 F)
1943
-30.0 C (-22.0 F)
1944
-32.8 C (-27.0 F)
1945
-22.2 C (-8.0 F)
1946
-26.7 C (-16.1 F)
1947
-26.7 C (-16.1 F)
1948
-31.1 C (-24.0 F)
1949
-26.1 C (-15.0 F)
1950
-30.0 C (-22.0 F)
1951
-26.7 C (-16.1 F)
1952
-21.7 C (-7.1 F)
1953
-29.4 C (-20.9 F)
1954
-25.6 C (-14.1 F)
1955
-25.0 C (-13.0 F)
1956
-22.8 C (-9.0 F)
1957
-26.7 C (-16.1 F)
1958
-25.0 C (-13.0 F)
1959
-27.8 C (-18.0 F)
1960
-29.4 C (-20.9 F)
1961
-27.8 C (-18.0 F)
1962
-32.2 C (-26.0 F)
1963
-30.0 C (-22.0 F)
1964
-30.0 C (-22.0 F)
1965
-25.0 C (-13.0 F)
1966
-23.9 C (-11.0 F)
1967
-31.7 C (-25.1 F)
1968
-30.6 C (-23.1 F)
1969
-25.0 C (-13.0 F)
1970
-32.8 C (-27.0 F)
1971
-24.4 C (-11.9 F)
1972
-28.3 C (-18.9 F)
1973
-26.1 C (-15.0 F)
1974
-35.0 C (-31.0 F)
1975
-29.4 C (-20.9 F)
1976
-25.6 C (-14.1 F)
1977
-31.7 C (-25.1 F)
1978
-28.9 C (-20.0 F)
1979
-30.6 C (-23.1 F)
1980
-26.1 C (-15.0 F)
1981
-31.1 C (-24.0 F)
1982
-30.6 C (-23.1 F)
1983
-31.1 C (-24.0 F)
1984
-28.3 C (-18.9 F)
1985
-27.2 C (-17.0 F)
1986
-24.4 C (-11.9 F)
1987
-19.4 C (-2.9 F)
1988
-27.2 C (-17.0 F)
1989
-32.8 C (-27.0 F)
1990
-27.2 C (-17.0 F)
1991
-25.6 C (-14.1 F)
1992
-20.6 C (-5.1 F)
1993
-25.6 C (-14.1 F)
1994
-28.3 C (-18.9 F)
1995
-25.0 C (-13.0 F)
1996
-31.1 C (-24.0 F)
1997
-25.6 C (-14.1 F)
1998
-26.7 C (-16.1 F)
1999
-23.9 C (-11.0 F)
2000
-26.7 C (-16.1 F)
2001
-25.0 C (-13.0 F)
2002
-22.8 C (-9.0 F)
2003
-26.1 C (-15.0 F)
2004
-23.3 C (-9.9 F)
Wettest day (Rx1day)
The wettest day of the year at Clarkson, 1940 to 2004. The record is 158.8 mm (6.3 in) in 1944, marked on the chart; the median year is 60.5 mm (2.4 in).
Wettest day (Rx1day) at Clarkson by year
Year
Wettest day (Rx1day)
1940
20.8 mm (0.8 in)
1941
35.6 mm (1.4 in)
1942
45.2 mm (1.8 in)
1943
48.3 mm (1.9 in)
1944
158.8 mm (6.3 in)
1945
60.5 mm (2.4 in)
1946
49.0 mm (1.9 in)
1947
70.4 mm (2.8 in)
1948
104.6 mm (4.1 in)
1949
56.1 mm (2.2 in)
1950
65.5 mm (2.6 in)
1951
62.5 mm (2.5 in)
1952
39.4 mm (1.6 in)
1953
53.1 mm (2.1 in)
1954
33.8 mm (1.3 in)
1955
59.7 mm (2.4 in)
1956
36.8 mm (1.4 in)
1957
64.0 mm (2.5 in)
1958
79.2 mm (3.1 in)
1959
67.6 mm (2.7 in)
1960
53.3 mm (2.1 in)
1961
54.6 mm (2.1 in)
1962
64.5 mm (2.5 in)
1963
46.7 mm (1.8 in)
1964
46.2 mm (1.8 in)
1965
54.4 mm (2.1 in)
1966
92.7 mm (3.6 in)
1967
91.4 mm (3.6 in)
1968
68.8 mm (2.7 in)
1969
49.8 mm (2.0 in)
1970
57.2 mm (2.3 in)
1971
45.2 mm (1.8 in)
1972
54.9 mm (2.2 in)
1973
64.3 mm (2.5 in)
1974
44.7 mm (1.8 in)
1975
73.7 mm (2.9 in)
1976
58.7 mm (2.3 in)
1977
63.8 mm (2.5 in)
1978
31.0 mm (1.2 in)
1979
84.8 mm (3.3 in)
1980
41.7 mm (1.6 in)
1981
62.5 mm (2.5 in)
1982
55.1 mm (2.2 in)
1983
55.9 mm (2.2 in)
1984
107.7 mm (4.2 in)
1985
66.8 mm (2.6 in)
1986
42.7 mm (1.7 in)
1987
55.4 mm (2.2 in)
1988
48.5 mm (1.9 in)
1989
108.7 mm (4.3 in)
1990
115.1 mm (4.5 in)
1991
39.4 mm (1.6 in)
1992
55.6 mm (2.2 in)
1993
65.5 mm (2.6 in)
1994
52.6 mm (2.1 in)
1995
125.0 mm (4.9 in)
1996
119.9 mm (4.7 in)
1997
67.8 mm (2.7 in)
1998
82.3 mm (3.2 in)
1999
72.4 mm (2.9 in)
2000
63.5 mm (2.5 in)
2001
79.2 mm (3.1 in)
2002
67.6 mm (2.7 in)
2003
109.2 mm (4.3 in)
2004
139.7 mm (5.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Clarkson, 1940 to 2004. The record is 284.3 mm (11.2 in) in 1990, marked on the chart; the median year is 91.6 mm (3.6 in).
Wettest five days (Rx5day) at Clarkson by year
Year
Wettest five days (Rx5day)
1940
33.6 mm (1.3 in)
1941
58.2 mm (2.3 in)
1942
103.1 mm (4.1 in)
1943
84.1 mm (3.3 in)
1944
202.5 mm (8.0 in)
1945
109.8 mm (4.3 in)
1946
77.7 mm (3.1 in)
1947
117.2 mm (4.6 in)
1948
112.7 mm (4.4 in)
1949
77.7 mm (3.1 in)
1950
91.6 mm (3.6 in)
1951
82.1 mm (3.2 in)
1952
73.2 mm (2.9 in)
1953
71.1 mm (2.8 in)
1954
48.5 mm (1.9 in)
1955
68.1 mm (2.7 in)
1956
40.2 mm (1.6 in)
1957
117.1 mm (4.6 in)
1958
85.6 mm (3.4 in)
1959
125.0 mm (4.9 in)
1960
75.7 mm (3.0 in)
1961
72.4 mm (2.9 in)
1962
80.0 mm (3.1 in)
1963
79.0 mm (3.1 in)
1964
73.6 mm (2.9 in)
1965
117.1 mm (4.6 in)
1966
145.3 mm (5.7 in)
1967
142.0 mm (5.6 in)
1968
161.7 mm (6.4 in)
1969
86.9 mm (3.4 in)
1970
99.9 mm (3.9 in)
1971
89.7 mm (3.5 in)
1972
65.1 mm (2.6 in)
1973
113.5 mm (4.5 in)
1974
62.4 mm (2.5 in)
1975
100.3 mm (3.9 in)
1976
116.6 mm (4.6 in)
1977
117.3 mm (4.6 in)
1978
41.4 mm (1.6 in)
1979
112.0 mm (4.4 in)
1980
69.6 mm (2.7 in)
1981
89.7 mm (3.5 in)
1982
81.8 mm (3.2 in)
1983
74.4 mm (2.9 in)
1984
160.3 mm (6.3 in)
1985
139.2 mm (5.5 in)
1986
73.0 mm (2.9 in)
1987
94.3 mm (3.7 in)
1988
55.4 mm (2.2 in)
1989
144.8 mm (5.7 in)
1990
284.3 mm (11.2 in)
1991
86.9 mm (3.4 in)
1992
107.6 mm (4.2 in)
1993
98.0 mm (3.9 in)
1994
139.7 mm (5.5 in)
1995
129.9 mm (5.1 in)
1996
136.9 mm (5.4 in)
1997
97.3 mm (3.8 in)
1998
86.9 mm (3.4 in)
1999
83.9 mm (3.3 in)
2000
108.5 mm (4.3 in)
2001
136.4 mm (5.4 in)
2002
70.9 mm (2.8 in)
2003
195.6 mm (7.7 in)
2004
139.7 mm (5.5 in)
Longest dry spell (CDD)
The longest dry spell of the year at Clarkson, 1940 to 2004. The record is 63 days in 1958, marked on the chart; the median year is 31 days.
Longest dry spell (CDD) at Clarkson by year
Year
Longest dry spell (CDD)
1940
15 days
1941
27 days
1942
31 days
1943
36 days
1944
31 days
1945
42 days
1946
40 days
1947
24 days
1948
32 days
1949
49 days
1950
31 days
1951
22 days
1952
58 days
1953
42 days
1954
43 days
1955
28 days
1956
30 days
1957
37 days
1958
63 days
1959
43 days
1960
59 days
1961
31 days
1962
48 days
1963
26 days
1964
31 days
1965
43 days
1966
28 days
1967
43 days
1968
39 days
1969
31 days
1970
27 days
1971
24 days
1972
29 days
1973
27 days
1974
28 days
1975
24 days
1976
42 days
1977
21 days
1978
24 days
1979
30 days
1980
39 days
1981
30 days
1982
25 days
1983
19 days
1984
33 days
1985
24 days
1986
34 days
1987
37 days
1988
40 days
1989
34 days
1990
20 days
1991
21 days
1992
22 days
1993
22 days
1994
22 days
1995
19 days
1996
32 days
1997
32 days
1998
37 days
1999
45 days
2000
21 days
2001
39 days
2002
35 days
2003
21 days
2004
32 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
55 years with a frost
Across 55 years with a frost, the median last spring frost at Clarkson falls on 1 May and the median first autumn frost on 30 September, which leaves a median of 153 days between them.
Fitted over all years, the growing season changes by +1.1 days per decade at this station.
Frost dates and growing season at Clarkson
Measure
Median, all years
Earliest period
Recent period (1971 to 2003)
Recent against earliest
Fitted trend
Last spring frost
1 May
n/a
29 April
n/a
-1.9 days per decade
First autumn frost
30 September
n/a
28 September
n/a
-0.8 days per decade
Growing days
153 days
n/a
154 days
n/a
+1.1 days per decade
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
62 years, 1941 to 2003
A day with at least 60.1 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 160.5 mm (6.3 in) of rain is expected about once in 100 years.
Rainfall return levels at Clarkson: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
60.1 mm (2.4 in)
5 years
81.2 mm (3.2 in)
10 years
97.2 mm (3.8 in)
25 years
120.1 mm (4.7 in)
50 years
139.4 mm (5.5 in)
100 years
160.5 mm (6.3 in)
Longer than the 62 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, 62 years of values from 1941 to 2003.
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: 158.8 mm (6.3 in) in 1944; 125.0 mm (4.9 in) in 1995; 119.9 mm (4.7 in) in 1996.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Clarkson, at 1959. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1959 ran 0.3 C (0.5 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Clarkson, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1959
-0.3
-0.5
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 Clarkson standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Clarkson 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.