Record envelope, standing records and threshold days for Summer Shade (USC00157800), Kentucky, United States, with 60 years of record.
Key Facts for Summer Shade
Summer Shade (USC00157800) is a weather station in Kentucky, United States at 36.89 latitude and -85.71 longitude, 263 m (864 ft) above sea level.
The station reports from 1950 to 2009, 60 years of record.
1,464 records set at Summer Shade still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Summer Shade set a daily record high minimum temperature of 12.2 C (54.0 F) on 10 February 2009.
About the Station
Location: Kentucky, United States, 36.89 latitude, -85.71 longitude.
Elevation: 263 m (864 ft).
Period of record: 1950 to 2009, 60 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 Summer Shade. 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 Summer Shade, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
25.6 C (78.1 F)
-32.2 C (-26.0 F)
n/a
n/a
Feb
27.2 C (81.0 F)
-29.4 C (-20.9 F)
n/a
n/a
Mar
30.6 C (87.1 F)
-21.1 C (-6.0 F)
n/a
n/a
Apr
32.2 C (90.0 F)
-10.6 C (12.9 F)
n/a
n/a
May
34.4 C (93.9 F)
-7.2 C (19.0 F)
n/a
n/a
Jun
38.9 C (102.0 F)
2.8 C (37.0 F)
n/a
n/a
Jul
43.3 C (109.9 F)
8.9 C (48.0 F)
n/a
n/a
Aug
40.6 C (105.1 F)
6.1 C (43.0 F)
n/a
n/a
Sep
40.6 C (105.1 F)
0.6 C (33.1 F)
n/a
n/a
Oct
32.8 C (91.0 F)
-8.9 C (16.0 F)
n/a
n/a
Nov
28.9 C (84.0 F)
-21.7 C (-7.1 F)
n/a
n/a
Dec
25.6 C (78.1 F)
-26.1 C (-15.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Summer Shade still stand. 1954 holds the most, with 64.
Standing records at Summer Shade by the year they were set
Year set
Standing records
1950
8
1951
36
1952
55
1953
48
1954
64
1955
41
1956
29
1957
16
1958
30
1959
20
1960
29
1961
29
1962
40
1963
34
1964
24
1965
18
1966
20
1967
40
1968
17
1969
18
1970
20
1971
21
1972
23
1973
11
1974
27
1975
12
1976
35
1977
31
1978
11
1979
26
1980
35
1981
14
1982
33
1983
27
1984
22
1985
25
1986
25
1987
9
1988
25
1989
28
1990
26
1991
34
1992
15
1993
9
1994
11
1995
24
1996
25
1997
20
1998
14
1999
15
2000
26
2001
11
2002
20
2003
14
2004
16
2005
20
2006
34
2007
31
2008
21
2009
2
All-Time Record Progression
4 new records
4 all-time records were set at Summer Shade between 21 January 1985 and 15 July 2004. Each dot is a new record.
When Summer Shade set new all-time records
Date
Kind
Detail
1985-01-21
Record low minimum temperature
Record low minimum temperature -31.7 C (-25.1 F)
1989-12-22
Record low maximum temperature
Record low maximum temperature -16.1 C (3.0 F)
1994-01-19
Record low minimum temperature
Record low minimum temperature -32.2 C (-26.0 F)
2004-07-15
Record high maximum temperature
Record high maximum temperature 43.3 C (109.9 F)
Wettest Day of Each Month
Sep: 163.8 mm (6.4 in)
The wettest day on record for each calendar month at Summer Shade. The most was 163.8 mm (6.4 in) on 9 September 1970.
Record daily precipitation for each month at Summer Shade
Month
Record daily precipitation (mm)
Date
Jan
83.8 mm (3.3 in)
10 January 1974
Feb
90.4 mm (3.6 in)
27 February 1962
Mar
148.6 mm (5.9 in)
22 March 1952
Apr
76.5 mm (3.0 in)
16 April 1954
May
134.1 mm (5.3 in)
7 May 1984
Jun
113.8 mm (4.5 in)
23 June 1969
Jul
80.3 mm (3.2 in)
3 July 1992
Aug
88.9 mm (3.5 in)
29 August 2005
Sep
163.8 mm (6.4 in)
9 September 1970
Oct
98.6 mm (3.9 in)
23 October 2007
Nov
98.6 mm (3.9 in)
27 November 1973
Dec
131.8 mm (5.2 in)
8 December 1978
Period of Record Coverage
1950 to 2009
Complete yearUnder 90 percent of days
60 years of record at Summer Shade, 1950 to 2009. 4 years have data for under 90 percent of days and are left out of rankings: 1950, 2006, 2007, 2009.
Cooler than the station meanWarmer than the station mean
One stripe for each of 55 complete years at Summer Shade, 1951 to 2008. Blue stripes are years cooler than the station's own mean of 13.7 C (56.6 F); red stripes are warmer. The coolest year was 1958, at 12.4 C (54.3 F), and the warmest was 1990, at 15.2 C (59.3 F). The strongest colour marks a difference of 1.6 C (2.9 F).
Annual mean temperature at Summer Shade as warming stripes, 1951 to 2008
Year
Annual mean temperature
Difference from the station mean
1951
13.6 C
-0.03 C
1952
14.1 C
+0.47 C
1953
14.7 C
+0.99 C
1954
14.6 C
+0.94 C
1955
14.3 C
+0.62 C
1956
14.3 C
+0.60 C
1957
14.2 C
+0.57 C
1958
12.4 C
-1.29 C
1959
14.0 C
+0.36 C
1960
12.8 C
-0.85 C
1961
13.4 C
-0.28 C
1962
13.7 C
+0.01 C
1963
13.0 C
-0.70 C
1964
14.0 C
+0.34 C
1965
14.0 C
+0.31 C
1966
12.9 C
-0.81 C
1967
13.3 C
-0.33 C
1968
12.9 C
-0.75 C
1969
12.9 C
-0.78 C
1970
13.6 C
-0.08 C
1971
13.8 C
+0.16 C
1972
13.6 C
-0.04 C
1973
14.1 C
+0.43 C
1974
14.0 C
+0.28 C
1975
14.1 C
+0.39 C
1976
12.5 C
-1.14 C
1977
13.4 C
-0.32 C
1978
12.6 C
-1.10 C
1979
12.5 C
-1.13 C
1980
13.4 C
-0.25 C
1981
12.8 C
-0.83 C
1982
13.4 C
-0.24 C
1983
13.4 C
-0.30 C
1984
14.1 C
+0.42 C
1985
14.0 C
+0.28 C
1986
14.5 C
+0.83 C
1987
14.3 C
+0.61 C
1988
13.5 C
-0.13 C
1989
13.5 C
-0.20 C
1990
15.2 C
+1.51 C
1991
15.1 C
+1.44 C
1992
13.7 C
-0.02 C
1993
13.6 C
-0.08 C
1994
13.6 C
-0.04 C
1995
13.6 C
-0.10 C
1996
12.9 C
-0.79 C
1997
12.6 C
-1.12 C
1998
14.8 C
+1.12 C
1999
14.3 C
+0.66 C
2000
13.8 C
+0.09 C
2002
14.4 C
+0.70 C
2003
12.8 C
-0.86 C
2004
14.2 C
+0.50 C
2005
13.6 C
-0.10 C
2008
13.9 C
+0.27 C
The fitted trend in annual mean temperature here over 1951 to 2008 is 0.02 C (-0.10 to 0.13) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.03 F (-0.17 to 0.24) 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 Summer Shade
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.02 C (-0.10 to 0.13) per decade
0.03 F (-0.17 to 0.24) per decade
1951 to 2008
55
Not clearly different from zero
Mean daily maximum
0.00 C (-0.13 to 0.13) per decade
0.00 F (-0.24 to 0.24) per decade
1951 to 2008
55
Not clearly different from zero
Mean daily minimum
0.03 C (-0.10 to 0.17) per decade
0.1 F (-0.2 to 0.3) per decade
1951 to 2008
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
1950 to 2009
Yearly extremes at Summer Shade: 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)
2004
35.3 C (95.5 F)
60
Coldest night (TNn)
-32.2 C (-26.0 F)
1994
-19.4 C (-3.0 F)
60
Wettest day (Rx1day)
163.8 mm (6.4 in)
1970
71.2 mm (2.8 in)
60
Wettest five days (Rx5day)
233.2 mm (9.2 in)
1978
120.3 mm (4.7 in)
60
Longest dry spell (CDD)
32 days
1963
17 days
60
Hottest day (TXx)
The hottest day of the year at Summer Shade, 1950 to 2009. The record is 43.3 C (109.9 F) in 2004, marked on the chart; the median year is 35.3 C (95.5 F).
Hottest day (TXx) at Summer Shade by year
Year
Hottest day (TXx)
1950
21.1 C (70.0 F)
1951
36.7 C (98.1 F)
1952
41.1 C (106.0 F)
1953
38.3 C (100.9 F)
1954
40.6 C (105.1 F)
1955
36.7 C (98.1 F)
1956
36.1 C (97.0 F)
1957
36.7 C (98.1 F)
1958
34.4 C (93.9 F)
1959
36.1 C (97.0 F)
1960
35.6 C (96.1 F)
1961
33.9 C (93.0 F)
1962
38.9 C (102.0 F)
1963
34.4 C (93.9 F)
1964
36.7 C (98.1 F)
1965
36.1 C (97.0 F)
1966
37.8 C (100.0 F)
1967
34.4 C (93.9 F)
1968
35.0 C (95.0 F)
1969
35.6 C (96.1 F)
1970
34.4 C (93.9 F)
1971
35.0 C (95.0 F)
1972
34.4 C (93.9 F)
1973
33.3 C (91.9 F)
1974
32.2 C (90.0 F)
1975
34.4 C (93.9 F)
1976
33.9 C (93.0 F)
1977
34.4 C (93.9 F)
1978
34.4 C (93.9 F)
1979
33.9 C (93.0 F)
1980
38.9 C (102.0 F)
1981
33.9 C (93.0 F)
1982
33.9 C (93.0 F)
1983
38.9 C (102.0 F)
1984
35.0 C (95.0 F)
1985
34.4 C (93.9 F)
1986
36.7 C (98.1 F)
1987
36.1 C (97.0 F)
1988
38.9 C (102.0 F)
1989
33.9 C (93.0 F)
1990
37.2 C (99.0 F)
1991
35.6 C (96.1 F)
1992
33.9 C (93.0 F)
1993
36.7 C (98.1 F)
1994
35.0 C (95.0 F)
1995
36.1 C (97.0 F)
1996
34.4 C (93.9 F)
1997
37.2 C (99.0 F)
1998
36.1 C (97.0 F)
1999
37.2 C (99.0 F)
2000
35.0 C (95.0 F)
2001
34.4 C (93.9 F)
2002
35.0 C (95.0 F)
2003
33.9 C (93.0 F)
2004
43.3 C (109.9 F)
2005
37.2 C (99.0 F)
2006
37.8 C (100.0 F)
2007
40.6 C (105.1 F)
2008
35.0 C (95.0 F)
2009
21.7 C (71.1 F)
Coldest night (TNn)
The coldest night of the year at Summer Shade, 1950 to 2009. The record is -32.2 C (-26.0 F) in 1994, marked on the chart; the median year is -19.4 C (-3.0 F).
Coldest night (TNn) at Summer Shade by year
Year
Coldest night (TNn)
1950
-21.7 C (-7.1 F)
1951
-29.4 C (-20.9 F)
1952
-14.4 C (6.1 F)
1953
-18.9 C (-2.0 F)
1954
-20.0 C (-4.0 F)
1955
-20.6 C (-5.1 F)
1956
-12.8 C (9.0 F)
1957
-17.8 C (0.0 F)
1958
-22.8 C (-9.0 F)
1959
-18.9 C (-2.0 F)
1960
-21.1 C (-6.0 F)
1961
-24.4 C (-11.9 F)
1962
-24.4 C (-11.9 F)
1963
-25.6 C (-14.1 F)
1964
-18.3 C (-0.9 F)
1965
-23.9 C (-11.0 F)
1966
-27.2 C (-17.0 F)
1967
-17.2 C (1.0 F)
1968
-16.7 C (1.9 F)
1969
-20.0 C (-4.0 F)
1970
-23.9 C (-11.0 F)
1971
-23.3 C (-9.9 F)
1972
-20.6 C (-5.1 F)
1973
-17.2 C (1.0 F)
1974
-12.2 C (10.0 F)
1975
-12.8 C (9.0 F)
1976
-21.1 C (-6.0 F)
1977
-26.1 C (-15.0 F)
1978
-20.6 C (-5.1 F)
1979
-22.2 C (-8.0 F)
1980
-20.0 C (-4.0 F)
1981
-21.7 C (-7.1 F)
1982
-27.8 C (-18.0 F)
1983
-22.2 C (-8.0 F)
1984
-27.2 C (-17.0 F)
1985
-31.7 C (-25.1 F)
1986
-18.3 C (-0.9 F)
1987
-15.6 C (3.9 F)
1988
-16.7 C (1.9 F)
1989
-26.1 C (-15.0 F)
1990
-12.8 C (9.0 F)
1991
-16.7 C (1.9 F)
1992
-15.6 C (3.9 F)
1993
-15.0 C (5.0 F)
1994
-32.2 C (-26.0 F)
1995
-17.8 C (0.0 F)
1996
-27.8 C (-18.0 F)
1997
-20.6 C (-5.1 F)
1998
-15.6 C (3.9 F)
1999
-15.6 C (3.9 F)
2000
-18.9 C (-2.0 F)
2001
-18.3 C (-0.9 F)
2002
-12.2 C (10.0 F)
2003
-23.3 C (-9.9 F)
2004
-17.8 C (0.0 F)
2005
-15.6 C (3.9 F)
2006
-11.1 C (12.0 F)
2007
-16.1 C (3.0 F)
2008
-15.0 C (5.0 F)
2009
-17.8 C (0.0 F)
Wettest day (Rx1day)
The wettest day of the year at Summer Shade, 1950 to 2009. The record is 163.8 mm (6.4 in) in 1970, marked on the chart; the median year is 71.2 mm (2.8 in).
Wettest day (Rx1day) at Summer Shade by year
Year
Wettest day (Rx1day)
1950
36.6 mm (1.4 in)
1951
62.0 mm (2.4 in)
1952
148.6 mm (5.9 in)
1953
59.2 mm (2.3 in)
1954
76.5 mm (3.0 in)
1955
79.5 mm (3.1 in)
1956
73.7 mm (2.9 in)
1957
77.0 mm (3.0 in)
1958
65.0 mm (2.6 in)
1959
49.8 mm (2.0 in)
1960
73.9 mm (2.9 in)
1961
56.1 mm (2.2 in)
1962
90.4 mm (3.6 in)
1963
63.8 mm (2.5 in)
1964
64.5 mm (2.5 in)
1965
70.9 mm (2.8 in)
1966
66.0 mm (2.6 in)
1967
85.6 mm (3.4 in)
1968
64.3 mm (2.5 in)
1969
113.8 mm (4.5 in)
1970
163.8 mm (6.4 in)
1971
66.5 mm (2.6 in)
1972
58.9 mm (2.3 in)
1973
98.6 mm (3.9 in)
1974
83.8 mm (3.3 in)
1975
140.0 mm (5.5 in)
1976
71.9 mm (2.8 in)
1977
72.9 mm (2.9 in)
1978
131.8 mm (5.2 in)
1979
98.6 mm (3.9 in)
1980
57.9 mm (2.3 in)
1981
102.1 mm (4.0 in)
1982
54.1 mm (2.1 in)
1983
68.6 mm (2.7 in)
1984
134.1 mm (5.3 in)
1985
74.2 mm (2.9 in)
1986
110.7 mm (4.4 in)
1987
53.1 mm (2.1 in)
1988
67.1 mm (2.6 in)
1989
75.9 mm (3.0 in)
1990
87.6 mm (3.4 in)
1991
53.1 mm (2.1 in)
1992
80.3 mm (3.2 in)
1993
56.4 mm (2.2 in)
1994
71.4 mm (2.8 in)
1995
90.9 mm (3.6 in)
1996
59.2 mm (2.3 in)
1997
58.7 mm (2.3 in)
1998
52.1 mm (2.1 in)
1999
63.8 mm (2.5 in)
2000
69.1 mm (2.7 in)
2001
68.8 mm (2.7 in)
2002
87.9 mm (3.5 in)
2003
70.1 mm (2.8 in)
2004
116.8 mm (4.6 in)
2005
88.9 mm (3.5 in)
2006
48.3 mm (1.9 in)
2007
98.6 mm (3.9 in)
2008
56.1 mm (2.2 in)
2009
36.8 mm (1.4 in)
Wettest five days (Rx5day)
The wettest five days of the year at Summer Shade, 1950 to 2009. The record is 233.2 mm (9.2 in) in 1978, marked on the chart; the median year is 120.3 mm (4.7 in).
Wettest five days (Rx5day) at Summer Shade by year
Year
Wettest five days (Rx5day)
1950
67.1 mm (2.6 in)
1951
148.0 mm (5.8 in)
1952
158.3 mm (6.2 in)
1953
80.3 mm (3.2 in)
1954
101.6 mm (4.0 in)
1955
126.7 mm (5.0 in)
1956
174.6 mm (6.9 in)
1957
145.2 mm (5.7 in)
1958
107.4 mm (4.2 in)
1959
91.1 mm (3.6 in)
1960
89.2 mm (3.5 in)
1961
114.9 mm (4.5 in)
1962
181.3 mm (7.1 in)
1963
86.6 mm (3.4 in)
1964
115.8 mm (4.6 in)
1965
141.0 mm (5.6 in)
1966
112.9 mm (4.4 in)
1967
112.5 mm (4.4 in)
1968
110.5 mm (4.4 in)
1969
131.3 mm (5.2 in)
1970
171.4 mm (6.7 in)
1971
87.9 mm (3.5 in)
1972
98.1 mm (3.9 in)
1973
139.7 mm (5.5 in)
1974
136.1 mm (5.4 in)
1975
228.9 mm (9.0 in)
1976
87.9 mm (3.5 in)
1977
122.1 mm (4.8 in)
1978
233.2 mm (9.2 in)
1979
107.4 mm (4.2 in)
1980
84.1 mm (3.3 in)
1981
181.3 mm (7.1 in)
1982
83.7 mm (3.3 in)
1983
165.1 mm (6.5 in)
1984
195.3 mm (7.7 in)
1985
86.9 mm (3.4 in)
1986
139.1 mm (5.5 in)
1987
108.7 mm (4.3 in)
1988
130.1 mm (5.1 in)
1989
162.5 mm (6.4 in)
1990
148.8 mm (5.9 in)
1991
146.8 mm (5.8 in)
1992
86.7 mm (3.4 in)
1993
121.7 mm (4.8 in)
1994
121.7 mm (4.8 in)
1995
118.9 mm (4.7 in)
1996
75.0 mm (3.0 in)
1997
171.4 mm (6.7 in)
1998
86.9 mm (3.4 in)
1999
67.6 mm (2.7 in)
2000
135.7 mm (5.3 in)
2001
75.4 mm (3.0 in)
2002
115.3 mm (4.5 in)
2003
125.0 mm (4.9 in)
2004
127.0 mm (5.0 in)
2005
206.0 mm (8.1 in)
2006
84.6 mm (3.3 in)
2007
149.5 mm (5.9 in)
2008
84.9 mm (3.3 in)
2009
39.8 mm (1.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Summer Shade, 1950 to 2009. The record is 32 days in 1963, marked on the chart; the median year is 17 days.
Longest dry spell (CDD) at Summer Shade by year
Year
Longest dry spell (CDD)
1950
18 days
1951
17 days
1952
24 days
1953
31 days
1954
19 days
1955
13 days
1956
21 days
1957
20 days
1958
17 days
1959
17 days
1960
17 days
1961
14 days
1962
15 days
1963
32 days
1964
26 days
1965
16 days
1966
14 days
1967
17 days
1968
22 days
1969
17 days
1970
13 days
1971
12 days
1972
22 days
1973
13 days
1974
15 days
1975
12 days
1976
15 days
1977
18 days
1978
18 days
1979
12 days
1980
19 days
1981
13 days
1982
11 days
1983
19 days
1984
21 days
1985
19 days
1986
23 days
1987
22 days
1988
15 days
1989
13 days
1990
17 days
1991
18 days
1992
19 days
1993
17 days
1994
11 days
1995
23 days
1996
15 days
1997
26 days
1998
22 days
1999
22 days
2000
17 days
2001
24 days
2002
18 days
2003
12 days
2004
22 days
2005
15 days
2006
14 days
2007
23 days
2008
31 days
2009
8 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 Summer Shade falls on 20 April and the median first autumn frost on 18 October, which leaves a median of 182 days between them.
Fitted over all years, the growing season changes by -0.7 days per decade at this station.
Frost dates and growing season at Summer Shade
Measure
Median, all years
Earliest period
Recent period (1976 to 2008)
Recent against earliest
Fitted trend
Last spring frost
20 April
n/a
23 April
n/a
-0.1 days per decade
First autumn frost
18 October
n/a
17 October
n/a
-0.8 days per decade
Growing days
182 days
n/a
181 days
n/a
-0.7 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
58 years, 1951 to 2008
A day with at least 72.4 mm (2.9 in) of rain is expected about once in 2 years. A day with at least 185.8 mm (7.3 in) of rain is expected about once in 100 years.
Rainfall return levels at Summer Shade: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
72.4 mm (2.9 in)
5 years
93.7 mm (3.7 in)
10 years
110.9 mm (4.4 in)
25 years
136.8 mm (5.4 in)
50 years
159.6 mm (6.3 in)
100 years
185.8 mm (7.3 in)
Longer than the 58 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, 58 years of values from 1951 to 2008.
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: 163.8 mm (6.4 in) in 1970; 148.6 mm (5.9 in) in 1952; 140.0 mm (5.5 in) in 1975.
Station Changes
2 suspected
2 changes were suspected in the annual mean temperature of Summer Shade, at 1984 and 1994. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1984 ran 0.3 C (0.5 F) higher than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1994 ran 0.5 C (0.9 F) lower than in the years before (possible change).
Suspected changes in the annual mean temperature at Summer Shade, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1984
+0.3
+0.5
likely
5
1994
-0.5
-0.9
possible
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 Summer Shade standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Summer Shade 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.