Record envelope, standing records and threshold days for Window Rock 4 SW (USC00029410), Arizona, United States, with 63 years of record.
Key Facts for Window Rock 4 SW
Window Rock 4 SW (USC00029410) is a weather station in Arizona, United States at 35.62 latitude and -109.12 longitude, 2,109 m (6,920 ft) above sea level.
The station reports from 1937 to 1999, 63 years of record.
1,464 records set at Window Rock 4 SW still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Window Rock 4 SW set a daily record precipitation of 30.7 mm (1.2 in) on 19 July 1999.
About the Station
Location: Arizona, United States, 35.62 latitude, -109.12 longitude.
Elevation: 2,109 m (6,920 ft).
Period of record: 1937 to 1999, 63 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 Window Rock 4 SW. 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 Window Rock 4 SW, 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)
-33.9 C (-29.0 F)
n/a
n/a
Feb
23.3 C (73.9 F)
-27.2 C (-17.0 F)
n/a
n/a
Mar
23.9 C (75.0 F)
-24.4 C (-11.9 F)
n/a
n/a
Apr
29.4 C (84.9 F)
-13.3 C (8.1 F)
n/a
n/a
May
32.2 C (90.0 F)
-11.7 C (10.9 F)
n/a
n/a
Jun
37.2 C (99.0 F)
-3.3 C (26.1 F)
n/a
n/a
Jul
37.2 C (99.0 F)
2.2 C (36.0 F)
n/a
n/a
Aug
35.6 C (96.1 F)
1.1 C (34.0 F)
n/a
n/a
Sep
33.3 C (91.9 F)
-4.4 C (24.1 F)
n/a
n/a
Oct
30.0 C (86.0 F)
-11.1 C (12.0 F)
n/a
n/a
Nov
23.9 C (75.0 F)
-23.3 C (-9.9 F)
n/a
n/a
Dec
21.1 C (70.0 F)
-30.6 C (-23.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Window Rock 4 SW still stand. 1989 holds the most, with 57.
Standing records at Window Rock 4 SW by the year they were set
Year set
Standing records
1937
23
1938
26
1939
26
1940
10
1941
15
1942
19
1943
22
1944
30
1945
22
1946
16
1947
25
1948
15
1949
16
1950
43
1951
34
1952
25
1953
24
1954
20
1955
29
1956
30
1957
38
1959
13
1960
31
1961
19
1962
26
1963
27
1964
35
1965
30
1966
24
1967
20
1968
15
1969
11
1970
24
1971
41
1972
21
1973
14
1974
22
1975
38
1976
22
1977
15
1978
19
1979
52
1980
25
1981
19
1982
12
1983
18
1984
26
1985
24
1986
24
1987
18
1988
30
1989
57
1990
50
1991
15
1992
12
1993
11
1994
16
1995
12
1996
29
1997
17
1998
13
1999
9
All-Time Record Progression
2 new records
2 all-time records were set at Window Rock 4 SW between 30 March 1970 and 19 July 1980. Each dot is a new record.
When Window Rock 4 SW set new all-time records
Date
Kind
Detail
1970-03-30
Record daily snowfall
Record daily snowfall 35.6 cm (14.0 in)
1980-07-19
Record high minimum temperature
Record high minimum temperature 23.3 C (73.9 F)
Wettest Day of Each Month
Jul: 60.5 mm (2.4 in)
The wettest day on record for each calendar month at Window Rock 4 SW. The most was 60.5 mm (2.4 in) on 29 July 1945.
Record daily precipitation for each month at Window Rock 4 SW
Month
Record daily precipitation (mm)
Date
Jan
38.1 mm (1.5 in)
9 January 1998
Feb
29.0 mm (1.1 in)
25 February 1982
Mar
22.9 mm (0.9 in)
19 March 1994
Apr
35.6 mm (1.4 in)
16 April 1988
May
32.8 mm (1.3 in)
6 May 1978
Jun
26.7 mm (1.1 in)
7 June 1997
Jul
60.5 mm (2.4 in)
29 July 1945
Aug
45.7 mm (1.8 in)
6 August 1968
Sep
53.1 mm (2.1 in)
30 September 1971
Oct
50.8 mm (2.0 in)
25 October 1998
Nov
26.7 mm (1.1 in)
7 November 1977
Dec
29.2 mm (1.1 in)
22 December 1997
Period of Record Coverage
1937 to 1999
Complete yearUnder 90 percent of days
62 years of record at Window Rock 4 SW, 1937 to 1999. 10 years have data for under 90 percent of days and are left out of rankings: 1937, 1948, 1949, 1979, 1980, 1981, 1983, 1995 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 45 complete years at Window Rock 4 SW, 1939 to 1998. Blue stripes are years cooler than the station's own mean of 9.1 C (48.3 F); red stripes are warmer. The coolest year was 1975, at 6.9 C (44.4 F), and the warmest was 1989, at 11.1 C (52.0 F). The strongest colour marks a difference of 2.2 C (4.0 F).
Annual mean temperature at Window Rock 4 SW as warming stripes, 1939 to 1998
Year
Annual mean temperature
Difference from the station mean
1939
9.2 C
+0.17 C
1940
9.7 C
+0.64 C
1941
8.5 C
-0.56 C
1942
8.9 C
-0.18 C
1943
9.5 C
+0.39 C
1944
7.2 C
-1.86 C
1945
8.2 C
-0.90 C
1946
9.5 C
+0.44 C
1947
9.3 C
+0.26 C
1950
9.7 C
+0.66 C
1951
8.8 C
-0.22 C
1952
8.2 C
-0.91 C
1953
9.0 C
-0.03 C
1954
10.1 C
+1.05 C
1955
8.7 C
-0.40 C
1956
9.2 C
+0.11 C
1957
8.9 C
-0.18 C
1959
9.1 C
+0.05 C
1960
8.8 C
-0.25 C
1961
8.6 C
-0.47 C
1962
9.1 C
+0.05 C
1963
9.3 C
+0.27 C
1965
8.1 C
-0.95 C
1966
9.2 C
+0.14 C
1967
8.7 C
-0.38 C
1968
8.2 C
-0.90 C
1969
8.7 C
-0.33 C
1971
8.2 C
-0.87 C
1972
9.0 C
-0.02 C
1973
7.8 C
-1.22 C
1975
6.9 C
-2.15 C
1982
9.0 C
-0.06 C
1984
9.5 C
+0.44 C
1985
9.8 C
+0.74 C
1986
10.2 C
+1.18 C
1987
9.4 C
+0.30 C
1988
10.1 C
+1.01 C
1989
11.1 C
+2.05 C
1990
10.0 C
+0.95 C
1991
9.2 C
+0.12 C
1992
9.1 C
+0.03 C
1993
9.5 C
+0.42 C
1994
9.8 C
+0.78 C
1996
9.9 C
+0.85 C
1998
8.9 C
-0.16 C
The annual mean temperature here has risen by 0.14 C (0.01 to 0.26) per decade over 1939 to 1998. In Fahrenheit: 0.25 F (0.02 to 0.48) per decade. The slope is a straight line fitted to 45 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Window Rock 4 SW
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.14 C (0.01 to 0.26) per decade
0.25 F (0.02 to 0.48) per decade
1939 to 1998
45
Rise
Mean daily maximum
-0.1 C (-0.2 to 0.1) per decade
-0.1 F (-0.4 to 0.1) per decade
1939 to 1998
45
Not clearly different from zero
Mean daily minimum
0.4 C (0.2 to 0.5) per decade
0.6 F (0.4 to 0.9) per decade
1939 to 1998
45
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 1999
Yearly extremes at Window Rock 4 SW: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
37.2 C (99.0 F)
1957
34.4 C (93.9 F)
62
Coldest night (TNn)
-33.9 C (-29.0 F)
1963
-23.0 C (-9.5 F)
62
Wettest day (Rx1day)
60.5 mm (2.4 in)
1945
25.3 mm (1.0 in)
62
Wettest five days (Rx5day)
109.5 mm (4.3 in)
1986
43.1 mm (1.7 in)
62
Longest dry spell (CDD)
95 days
1950
51 days
62
Hottest day (TXx)
The hottest day of the year at Window Rock 4 SW, 1937 to 1999. The record is 37.2 C (99.0 F) in 1957, marked on the chart; the median year is 34.4 C (93.9 F).
Hottest day (TXx) at Window Rock 4 SW by year
Year
Hottest day (TXx)
1937
35.6 C (96.1 F)
1938
35.6 C (96.1 F)
1939
35.0 C (95.0 F)
1940
35.6 C (96.1 F)
1941
32.8 C (91.0 F)
1942
35.0 C (95.0 F)
1943
35.0 C (95.0 F)
1944
33.3 C (91.9 F)
1945
32.8 C (91.0 F)
1946
34.4 C (93.9 F)
1947
35.0 C (95.0 F)
1948
31.7 C (89.1 F)
1949
32.8 C (91.0 F)
1950
35.0 C (95.0 F)
1951
35.6 C (96.1 F)
1952
34.4 C (93.9 F)
1953
34.4 C (93.9 F)
1954
35.0 C (95.0 F)
1955
35.0 C (95.0 F)
1956
34.4 C (93.9 F)
1957
37.2 C (99.0 F)
1959
33.9 C (93.0 F)
1960
35.6 C (96.1 F)
1961
33.9 C (93.0 F)
1962
35.0 C (95.0 F)
1963
34.4 C (93.9 F)
1964
33.9 C (93.0 F)
1965
32.2 C (90.0 F)
1966
34.4 C (93.9 F)
1967
34.4 C (93.9 F)
1968
33.9 C (93.0 F)
1969
34.4 C (93.9 F)
1970
36.7 C (98.1 F)
1971
36.7 C (98.1 F)
1972
35.6 C (96.1 F)
1973
36.1 C (97.0 F)
1974
34.4 C (93.9 F)
1975
34.4 C (93.9 F)
1976
33.3 C (91.9 F)
1977
35.6 C (96.1 F)
1978
35.6 C (96.1 F)
1979
33.9 C (93.0 F)
1980
33.9 C (93.0 F)
1981
33.9 C (93.0 F)
1982
33.9 C (93.0 F)
1983
32.2 C (90.0 F)
1984
35.6 C (96.1 F)
1985
35.0 C (95.0 F)
1986
35.0 C (95.0 F)
1987
34.4 C (93.9 F)
1988
34.4 C (93.9 F)
1989
37.2 C (99.0 F)
1990
37.2 C (99.0 F)
1991
32.2 C (90.0 F)
1992
32.2 C (90.0 F)
1993
32.2 C (90.0 F)
1994
35.0 C (95.0 F)
1995
34.4 C (93.9 F)
1996
33.9 C (93.0 F)
1997
32.8 C (91.0 F)
1998
33.9 C (93.0 F)
1999
32.2 C (90.0 F)
Coldest night (TNn)
The coldest night of the year at Window Rock 4 SW, 1937 to 1999. The record is -33.9 C (-29.0 F) in 1963, marked on the chart; the median year is -23.0 C (-9.5 F).
Coldest night (TNn) at Window Rock 4 SW by year
Year
Coldest night (TNn)
1937
-12.8 C (9.0 F)
1938
-17.8 C (0.0 F)
1939
-25.0 C (-13.0 F)
1940
-15.0 C (5.0 F)
1941
-16.7 C (1.9 F)
1942
-25.0 C (-13.0 F)
1943
-24.4 C (-11.9 F)
1944
-19.4 C (-2.9 F)
1945
-23.9 C (-11.0 F)
1946
-23.3 C (-9.9 F)
1947
-24.4 C (-11.9 F)
1948
-27.2 C (-17.0 F)
1949
-25.0 C (-13.0 F)
1950
-21.7 C (-7.1 F)
1951
-26.1 C (-15.0 F)
1952
-25.6 C (-14.1 F)
1953
-19.4 C (-2.9 F)
1954
-23.3 C (-9.9 F)
1955
-23.3 C (-9.9 F)
1956
-24.4 C (-11.9 F)
1957
-17.8 C (0.0 F)
1959
-22.8 C (-9.0 F)
1960
-26.7 C (-16.1 F)
1961
-30.6 C (-23.1 F)
1962
-22.8 C (-9.0 F)
1963
-33.9 C (-29.0 F)
1964
-24.4 C (-11.9 F)
1965
-22.2 C (-8.0 F)
1966
-25.0 C (-13.0 F)
1967
-26.1 C (-15.0 F)
1968
-30.0 C (-22.0 F)
1969
-18.3 C (-0.9 F)
1970
-20.0 C (-4.0 F)
1971
-31.1 C (-24.0 F)
1972
-18.9 C (-2.0 F)
1973
-20.0 C (-4.0 F)
1974
-22.8 C (-9.0 F)
1975
-23.9 C (-11.0 F)
1976
-23.3 C (-9.9 F)
1977
-23.3 C (-9.9 F)
1978
-28.3 C (-18.9 F)
1979
-28.3 C (-18.9 F)
1980
-18.3 C (-0.9 F)
1981
-17.2 C (1.0 F)
1982
-23.3 C (-9.9 F)
1983
-21.1 C (-6.0 F)
1984
-18.3 C (-0.9 F)
1985
-26.1 C (-15.0 F)
1986
-20.0 C (-4.0 F)
1987
-22.8 C (-9.0 F)
1988
-21.7 C (-7.1 F)
1989
-25.0 C (-13.0 F)
1990
-30.6 C (-23.1 F)
1991
-18.9 C (-2.0 F)
1992
-23.3 C (-9.9 F)
1993
-17.2 C (1.0 F)
1994
-17.8 C (0.0 F)
1995
-19.4 C (-2.9 F)
1996
-20.6 C (-5.1 F)
1997
-21.1 C (-6.0 F)
1998
-17.8 C (0.0 F)
1999
-14.4 C (6.1 F)
Wettest day (Rx1day)
The wettest day of the year at Window Rock 4 SW, 1937 to 1999. The record is 60.5 mm (2.4 in) in 1945, marked on the chart; the median year is 25.3 mm (1.0 in).
Wettest day (Rx1day) at Window Rock 4 SW by year
Year
Wettest day (Rx1day)
1937
16.5 mm (0.6 in)
1938
24.6 mm (1.0 in)
1939
27.2 mm (1.1 in)
1940
33.5 mm (1.3 in)
1941
36.6 mm (1.4 in)
1942
18.8 mm (0.7 in)
1943
23.1 mm (0.9 in)
1944
34.5 mm (1.4 in)
1945
60.5 mm (2.4 in)
1946
40.6 mm (1.6 in)
1947
21.6 mm (0.9 in)
1948
13.0 mm (0.5 in)
1949
21.8 mm (0.9 in)
1950
14.0 mm (0.6 in)
1951
19.1 mm (0.8 in)
1952
20.8 mm (0.8 in)
1953
24.9 mm (1.0 in)
1954
30.5 mm (1.2 in)
1955
19.3 mm (0.8 in)
1956
15.5 mm (0.6 in)
1957
24.1 mm (0.9 in)
1959
19.3 mm (0.8 in)
1960
18.8 mm (0.7 in)
1961
35.8 mm (1.4 in)
1962
25.9 mm (1.0 in)
1963
35.1 mm (1.4 in)
1964
42.7 mm (1.7 in)
1965
25.1 mm (1.0 in)
1966
17.8 mm (0.7 in)
1967
20.1 mm (0.8 in)
1968
45.7 mm (1.8 in)
1969
30.0 mm (1.2 in)
1970
42.7 mm (1.7 in)
1971
53.1 mm (2.1 in)
1972
40.1 mm (1.6 in)
1973
19.3 mm (0.8 in)
1974
30.5 mm (1.2 in)
1975
23.9 mm (0.9 in)
1976
16.5 mm (0.6 in)
1977
43.2 mm (1.7 in)
1978
32.8 mm (1.3 in)
1979
23.4 mm (0.9 in)
1980
25.4 mm (1.0 in)
1981
16.5 mm (0.6 in)
1982
29.0 mm (1.1 in)
1983
19.6 mm (0.8 in)
1984
27.4 mm (1.1 in)
1985
26.4 mm (1.0 in)
1986
59.2 mm (2.3 in)
1987
43.7 mm (1.7 in)
1988
35.6 mm (1.4 in)
1989
14.5 mm (0.6 in)
1990
37.8 mm (1.5 in)
1991
24.4 mm (1.0 in)
1992
20.3 mm (0.8 in)
1993
31.8 mm (1.3 in)
1994
22.9 mm (0.9 in)
1995
20.3 mm (0.8 in)
1996
15.2 mm (0.6 in)
1997
29.2 mm (1.1 in)
1998
50.8 mm (2.0 in)
1999
30.7 mm (1.2 in)
Wettest five days (Rx5day)
The wettest five days of the year at Window Rock 4 SW, 1937 to 1999. The record is 109.5 mm (4.3 in) in 1986, marked on the chart; the median year is 43.1 mm (1.7 in).
Wettest five days (Rx5day) at Window Rock 4 SW by year
Year
Wettest five days (Rx5day)
1937
29.7 mm (1.2 in)
1938
39.1 mm (1.5 in)
1939
39.6 mm (1.6 in)
1940
47.7 mm (1.9 in)
1941
56.4 mm (2.2 in)
1942
28.0 mm (1.1 in)
1943
25.7 mm (1.0 in)
1944
44.2 mm (1.7 in)
1945
107.5 mm (4.2 in)
1946
49.5 mm (1.9 in)
1947
39.7 mm (1.6 in)
1948
23.4 mm (0.9 in)
1949
35.5 mm (1.4 in)
1950
21.4 mm (0.8 in)
1951
26.9 mm (1.1 in)
1952
44.8 mm (1.8 in)
1953
37.3 mm (1.5 in)
1954
45.9 mm (1.8 in)
1955
30.0 mm (1.2 in)
1956
40.4 mm (1.6 in)
1957
34.6 mm (1.4 in)
1959
35.6 mm (1.4 in)
1960
56.6 mm (2.2 in)
1961
53.6 mm (2.1 in)
1962
61.2 mm (2.4 in)
1963
52.1 mm (2.1 in)
1964
90.8 mm (3.6 in)
1965
46.5 mm (1.8 in)
1966
28.2 mm (1.1 in)
1967
34.1 mm (1.3 in)
1968
67.8 mm (2.7 in)
1969
53.9 mm (2.1 in)
1970
57.7 mm (2.3 in)
1971
57.9 mm (2.3 in)
1972
65.0 mm (2.6 in)
1973
21.9 mm (0.9 in)
1974
64.1 mm (2.5 in)
1975
39.7 mm (1.6 in)
1976
26.4 mm (1.0 in)
1977
58.4 mm (2.3 in)
1978
47.4 mm (1.9 in)
1979
24.1 mm (0.9 in)
1980
46.5 mm (1.8 in)
1981
32.5 mm (1.3 in)
1982
43.7 mm (1.7 in)
1983
53.5 mm (2.1 in)
1984
50.3 mm (2.0 in)
1985
43.2 mm (1.7 in)
1986
109.5 mm (4.3 in)
1987
45.1 mm (1.8 in)
1988
42.5 mm (1.7 in)
1989
22.1 mm (0.9 in)
1990
42.9 mm (1.7 in)
1991
36.8 mm (1.4 in)
1992
38.7 mm (1.5 in)
1993
54.7 mm (2.2 in)
1994
40.7 mm (1.6 in)
1995
32.2 mm (1.3 in)
1996
31.8 mm (1.3 in)
1997
38.8 mm (1.5 in)
1998
77.5 mm (3.1 in)
1999
48.0 mm (1.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at Window Rock 4 SW, 1937 to 1999. The record is 95 days in 1950, marked on the chart; the median year is 51 days.
Longest dry spell (CDD) at Window Rock 4 SW by year
Year
Longest dry spell (CDD)
1937
79 days
1938
30 days
1939
71 days
1940
36 days
1941
20 days
1942
62 days
1943
28 days
1944
34 days
1945
49 days
1946
53 days
1947
60 days
1948
30 days
1949
32 days
1950
95 days
1951
60 days
1952
41 days
1953
34 days
1954
52 days
1955
54 days
1956
60 days
1957
36 days
1959
52 days
1960
49 days
1961
69 days
1962
66 days
1963
48 days
1964
44 days
1965
35 days
1966
59 days
1967
62 days
1968
33 days
1969
40 days
1970
41 days
1971
55 days
1972
50 days
1973
39 days
1974
42 days
1975
68 days
1976
43 days
1977
50 days
1978
66 days
1979
63 days
1980
51 days
1981
31 days
1982
73 days
1983
29 days
1984
41 days
1985
38 days
1986
36 days
1987
53 days
1988
57 days
1989
77 days
1990
52 days
1991
51 days
1992
34 days
1993
54 days
1994
57 days
1995
78 days
1996
89 days
1997
33 days
1998
67 days
1999
30 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
45 years with a frost
Across 45 years with a frost, the median last spring frost at Window Rock 4 SW falls on 29 May and the median first autumn frost on 2 October, which leaves a median of 120 days between them.
Fitted over all years, the growing season changes by +5.8 days per decade at this station.
Frost dates and growing season at Window Rock 4 SW
Measure
Median, all years
Earliest period
Recent period (1956 to 1998)
Recent against earliest
Fitted trend
Last spring frost
29 May
n/a
25 May
n/a
-3.4 days per decade
First autumn frost
2 October
n/a
4 October
n/a
+2.4 days per decade
Growing days
120 days
n/a
134 days
n/a
+5.8 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
55 years, 1938 to 1998
A day with at least 27.0 mm (1.1 in) of rain is expected about once in 2 years. A day with at least 69.6 mm (2.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Window Rock 4 SW: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
27.0 mm (1.1 in)
5 years
37.2 mm (1.5 in)
10 years
44.4 mm (1.7 in)
25 years
54.1 mm (2.1 in)
50 years
61.7 mm (2.4 in)
100 years
69.6 mm (2.7 in)
Longer than the 55 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, 55 years of values from 1938 to 1998.
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: 60.5 mm (2.4 in) in 1945; 59.2 mm (2.3 in) in 1986; 53.1 mm (2.1 in) in 1971.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Window Rock 4 SW, at 1984. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1984 ran 0.5 C (0.9 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at Window Rock 4 SW, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1984
+0.5
+0.9
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 Window Rock 4 SW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Window Rock 4 SW threshold days by year: CSV or JSON. Field meanings are on the data page.
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-14 (14 October 2026). Records are computed by this site and are not official.