Record envelope, standing records and threshold days for Sonnette 7 SW (USC00247740), Montana, United States, with 60 years of record.
Key Facts for Sonnette 7 SW
Sonnette 7 SW (USC00247740) is a weather station in Montana, United States at 45.32 latitude and -105.91 longitude, 1,193 m (3,914 ft) above sea level.
The station reports from 1965 to 2024, 60 years of record.
1,464 records set at Sonnette 7 SW still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Sonnette 7 SW set a daily record low maximum temperature of 18.9 C (66.0 F) on 7 August 2024.
About the Station
Location: Montana, United States, 45.32 latitude, -105.91 longitude.
Elevation: 1,193 m (3,914 ft).
Period of record: 1965 to 2024, 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 Sonnette 7 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 Sonnette 7 SW, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
20.0 C (68.0 F)
-40.0 C (-40.0 F)
n/a
n/a
Feb
21.1 C (70.0 F)
-41.1 C (-42.0 F)
n/a
n/a
Mar
26.7 C (80.1 F)
-36.1 C (-33.0 F)
n/a
n/a
Apr
30.6 C (87.1 F)
-22.2 C (-8.0 F)
n/a
n/a
May
39.4 C (102.9 F)
-11.7 C (10.9 F)
n/a
n/a
Jun
40.6 C (105.1 F)
-3.3 C (26.1 F)
n/a
n/a
Jul
41.7 C (107.1 F)
0.6 C (33.1 F)
n/a
n/a
Aug
39.4 C (102.9 F)
-3.9 C (25.0 F)
n/a
n/a
Sep
38.9 C (102.0 F)
-12.2 C (10.0 F)
n/a
n/a
Oct
32.8 C (91.0 F)
-26.7 C (-16.1 F)
n/a
n/a
Nov
25.0 C (77.0 F)
-31.7 C (-25.1 F)
n/a
n/a
Dec
21.7 C (71.1 F)
-42.2 C (-44.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Sonnette 7 SW still stand. 1985 holds the most, with 43.
Standing records at Sonnette 7 SW by the year they were set
Year set
Standing records
1965
8
1966
30
1967
18
1968
25
1969
32
1970
15
1971
28
1972
29
1973
20
1974
16
1975
16
1976
17
1977
14
1978
16
1979
16
1980
29
1981
23
1982
27
1983
33
1984
26
1985
43
1986
32
1987
33
1988
41
1989
40
1990
30
1991
27
1992
43
1993
27
1994
19
1995
29
1996
41
1997
37
1998
13
1999
11
2000
20
2001
12
2002
36
2003
29
2004
18
2005
26
2006
20
2007
17
2008
15
2009
33
2010
8
2011
10
2012
19
2013
28
2014
25
2015
32
2016
20
2017
32
2018
18
2019
18
2020
27
2021
35
2022
23
2023
22
2024
17
All-Time Record Progression
5 new records
5 all-time records were set at Sonnette 7 SW between 10 August 2000 and 27 July 2021. Each dot is a new record.
When Sonnette 7 SW set new all-time records
Date
Kind
Detail
2000-08-10
Record high minimum temperature
Record high minimum temperature 22.8 C (73.0 F)
2007-06-07
Record daily precipitation
Record daily precipitation 74.9 mm (2.9 in)
2013-05-30
Record daily precipitation
Record daily precipitation 76.7 mm (3.0 in)
2015-08-12
Record high minimum temperature
Record high minimum temperature 23.9 C (75.0 F)
2021-07-27
Record high maximum temperature
Record high maximum temperature 41.7 C (107.1 F)
Wettest Day of Each Month
May: 76.7 mm (3.0 in)
The wettest day on record for each calendar month at Sonnette 7 SW. The most was 76.7 mm (3.0 in) on 30 May 2013.
Record daily precipitation for each month at Sonnette 7 SW
Month
Record daily precipitation (mm)
Date
Jan
18.5 mm (0.7 in)
18 January 1975
Feb
35.6 mm (1.4 in)
26 February 1999
Mar
27.9 mm (1.1 in)
30 March 2009
Apr
62.0 mm (2.4 in)
26 April 1984
May
76.7 mm (3.0 in)
30 May 2013
Jun
74.9 mm (2.9 in)
7 June 2007
Jul
59.9 mm (2.4 in)
3 July 1974
Aug
65.5 mm (2.6 in)
15 August 1980
Sep
61.2 mm (2.4 in)
22 September 2023
Oct
44.7 mm (1.8 in)
31 October 1974
Nov
35.1 mm (1.4 in)
9 November 1978
Dec
25.7 mm (1.0 in)
23 December 1984
Period of Record Coverage
1965 to 2024
Complete yearUnder 90 percent of days
60 years of record at Sonnette 7 SW, 1965 to 2024. 7 years have data for under 90 percent of days and are left out of rankings: 1965, 1972, 1976, 1978, 2000, 2013, 2024.
Cooler than the station meanWarmer than the station mean
One stripe for each of 46 complete years at Sonnette 7 SW, 1966 to 2023. Blue stripes are years cooler than the station's own mean of 6.5 C (43.6 F); red stripes are warmer. The coolest year was 1978, at 4.8 C (40.6 F), and the warmest was 2016, at 8.6 C (47.6 F). The strongest colour marks a difference of 2.2 C (4.0 F).
Annual mean temperature at Sonnette 7 SW as warming stripes, 1966 to 2023
Year
Annual mean temperature
Difference from the station mean
1966
6.5 C
0.00 C
1967
5.9 C
-0.55 C
1968
5.2 C
-1.23 C
1969
5.8 C
-0.67 C
1970
5.9 C
-0.59 C
1973
6.5 C
+0.06 C
1974
6.8 C
+0.29 C
1975
5.1 C
-1.33 C
1977
6.2 C
-0.30 C
1978
4.8 C
-1.68 C
1979
5.5 C
-0.97 C
1980
6.8 C
+0.38 C
1981
7.7 C
+1.19 C
1982
5.0 C
-1.50 C
1983
6.2 C
-0.25 C
1984
6.2 C
-0.28 C
1986
7.1 C
+0.64 C
1987
7.7 C
+1.24 C
1988
7.8 C
+1.32 C
1989
5.9 C
-0.53 C
1990
6.9 C
+0.39 C
1991
7.2 C
+0.73 C
1992
7.2 C
+0.70 C
1993
5.0 C
-1.43 C
1995
6.6 C
+0.18 C
1998
7.1 C
+0.64 C
2001
6.9 C
+0.42 C
2002
5.9 C
-0.60 C
2003
6.5 C
+0.05 C
2004
6.6 C
+0.15 C
2005
6.4 C
-0.09 C
2006
7.2 C
+0.72 C
2007
6.6 C
+0.17 C
2008
5.0 C
-1.49 C
2009
5.1 C
-1.36 C
2010
5.7 C
-0.81 C
2011
5.6 C
-0.91 C
2012
7.5 C
+1.05 C
2016
8.6 C
+2.18 C
2017
7.8 C
+1.32 C
2018
6.3 C
-0.20 C
2019
5.6 C
-0.88 C
2020
7.5 C
+1.07 C
2021
8.1 C
+1.60 C
2022
6.9 C
+0.45 C
2023
7.4 C
+0.90 C
The annual mean temperature here has risen by 0.18 C (0.03 to 0.34) per decade over 1966 to 2023. In Fahrenheit: 0.33 F (0.05 to 0.60) per decade. The slope is a straight line fitted to 46 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Sonnette 7 SW
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.18 C (0.03 to 0.34) per decade
0.33 F (0.05 to 0.60) per decade
1966 to 2023
46
Rise
Mean daily maximum
0.18 C (-0.01 to 0.37) per decade
0.32 F (-0.02 to 0.67) per decade
1966 to 2023
46
Not clearly different from zero
Mean daily minimum
0.2 C (0.1 to 0.3) per decade
0.3 F (0.1 to 0.6) per decade
1966 to 2023
46
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
1965 to 2024
Yearly extremes at Sonnette 7 SW: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
41.7 C (107.1 F)
2021
37.8 C (100.0 F)
60
Coldest night (TNn)
-42.2 C (-44.0 F)
1983
-33.0 C (-27.5 F)
60
Wettest day (Rx1day)
76.7 mm (3.0 in)
2013
39.4 mm (1.5 in)
60
Wettest five days (Rx5day)
142.5 mm (5.6 in)
1978
56.5 mm (2.2 in)
60
Longest dry spell (CDD)
68 days
2001
36 days
60
Hottest day (TXx)
The hottest day of the year at Sonnette 7 SW, 1965 to 2024. The record is 41.7 C (107.1 F) in 2021, marked on the chart; the median year is 37.8 C (100.0 F).
Hottest day (TXx) at Sonnette 7 SW by year
Year
Hottest day (TXx)
1965
29.4 C (84.9 F)
1966
39.4 C (102.9 F)
1967
36.1 C (97.0 F)
1968
35.0 C (95.0 F)
1969
39.4 C (102.9 F)
1970
37.2 C (99.0 F)
1971
38.3 C (100.9 F)
1972
37.2 C (99.0 F)
1973
36.7 C (98.1 F)
1974
36.7 C (98.1 F)
1975
37.8 C (100.0 F)
1976
37.8 C (100.0 F)
1977
39.4 C (102.9 F)
1978
37.2 C (99.0 F)
1979
37.2 C (99.0 F)
1980
38.9 C (102.0 F)
1981
38.3 C (100.9 F)
1982
37.2 C (99.0 F)
1983
40.0 C (104.0 F)
1984
37.8 C (100.0 F)
1985
37.2 C (99.0 F)
1986
37.2 C (99.0 F)
1987
35.0 C (95.0 F)
1988
40.6 C (105.1 F)
1989
40.0 C (104.0 F)
1990
36.1 C (97.0 F)
1991
38.3 C (100.9 F)
1992
36.1 C (97.0 F)
1993
32.8 C (91.0 F)
1994
37.2 C (99.0 F)
1995
38.3 C (100.9 F)
1996
38.9 C (102.0 F)
1997
35.6 C (96.1 F)
1998
38.9 C (102.0 F)
1999
37.2 C (99.0 F)
2000
36.1 C (97.0 F)
2001
38.9 C (102.0 F)
2002
40.0 C (104.0 F)
2003
37.8 C (100.0 F)
2004
37.8 C (100.0 F)
2005
37.8 C (100.0 F)
2006
38.9 C (102.0 F)
2007
38.9 C (102.0 F)
2008
35.0 C (95.0 F)
2009
35.6 C (96.1 F)
2010
35.6 C (96.1 F)
2011
35.0 C (95.0 F)
2012
40.0 C (104.0 F)
2013
37.8 C (100.0 F)
2014
37.2 C (99.0 F)
2015
37.8 C (100.0 F)
2016
37.8 C (100.0 F)
2017
37.8 C (100.0 F)
2018
39.4 C (102.9 F)
2019
35.6 C (96.1 F)
2020
37.8 C (100.0 F)
2021
41.7 C (107.1 F)
2022
38.9 C (102.0 F)
2023
36.7 C (98.1 F)
2024
38.3 C (100.9 F)
Coldest night (TNn)
The coldest night of the year at Sonnette 7 SW, 1965 to 2024. The record is -42.2 C (-44.0 F) in 1983, marked on the chart; the median year is -33.0 C (-27.5 F).
Coldest night (TNn) at Sonnette 7 SW by year
Year
Coldest night (TNn)
1965
-25.6 C (-14.1 F)
1966
-30.6 C (-23.1 F)
1967
-33.9 C (-29.0 F)
1968
-33.3 C (-27.9 F)
1969
-35.6 C (-32.1 F)
1970
-31.7 C (-25.1 F)
1971
-35.0 C (-31.0 F)
1972
-36.7 C (-34.1 F)
1973
-32.2 C (-26.0 F)
1974
-33.3 C (-27.9 F)
1975
-34.4 C (-29.9 F)
1976
-32.2 C (-26.0 F)
1977
-35.0 C (-31.0 F)
1978
-35.6 C (-32.1 F)
1979
-34.4 C (-29.9 F)
1980
-31.1 C (-24.0 F)
1981
-30.0 C (-22.0 F)
1982
-36.7 C (-34.1 F)
1983
-42.2 C (-44.0 F)
1984
-32.8 C (-27.0 F)
1985
-38.9 C (-38.0 F)
1986
-31.1 C (-24.0 F)
1987
-24.4 C (-11.9 F)
1988
-30.0 C (-22.0 F)
1989
-41.1 C (-42.0 F)
1990
-38.3 C (-36.9 F)
1991
-32.2 C (-26.0 F)
1992
-30.6 C (-23.1 F)
1993
-32.8 C (-27.0 F)
1994
-31.7 C (-25.1 F)
1995
-28.9 C (-20.0 F)
1996
-40.0 C (-40.0 F)
1997
-37.2 C (-35.0 F)
1998
-35.0 C (-31.0 F)
1999
-25.6 C (-14.1 F)
2000
-30.0 C (-22.0 F)
2001
-27.2 C (-17.0 F)
2002
-28.9 C (-20.0 F)
2003
-35.0 C (-31.0 F)
2004
-35.6 C (-32.1 F)
2005
-32.8 C (-27.0 F)
2006
-32.8 C (-27.0 F)
2007
-30.0 C (-22.0 F)
2008
-33.3 C (-27.9 F)
2009
-31.7 C (-25.1 F)
2010
-31.1 C (-24.0 F)
2011
-34.4 C (-29.9 F)
2012
-24.4 C (-11.9 F)
2013
-36.1 C (-33.0 F)
2014
-35.0 C (-31.0 F)
2015
-30.6 C (-23.1 F)
2016
-31.7 C (-25.1 F)
2017
-32.8 C (-27.0 F)
2018
-33.3 C (-27.9 F)
2019
-36.1 C (-33.0 F)
2020
-24.4 C (-11.9 F)
2021
-36.1 C (-33.0 F)
2022
-36.7 C (-34.1 F)
2023
-33.9 C (-29.0 F)
2024
-40.0 C (-40.0 F)
Wettest day (Rx1day)
The wettest day of the year at Sonnette 7 SW, 1965 to 2024. The record is 76.7 mm (3.0 in) in 2013, marked on the chart; the median year is 39.4 mm (1.5 in).
Wettest day (Rx1day) at Sonnette 7 SW by year
Year
Wettest day (Rx1day)
1965
3.0 mm (0.12 in)
1966
14.7 mm (0.6 in)
1967
46.5 mm (1.8 in)
1968
43.2 mm (1.7 in)
1969
38.9 mm (1.5 in)
1970
59.4 mm (2.3 in)
1971
42.4 mm (1.7 in)
1972
22.6 mm (0.9 in)
1973
30.5 mm (1.2 in)
1974
59.9 mm (2.4 in)
1975
41.1 mm (1.6 in)
1976
37.1 mm (1.5 in)
1977
23.9 mm (0.9 in)
1978
72.9 mm (2.9 in)
1979
27.4 mm (1.1 in)
1980
65.5 mm (2.6 in)
1981
20.6 mm (0.8 in)
1982
33.5 mm (1.3 in)
1983
14.2 mm (0.6 in)
1984
62.0 mm (2.4 in)
1985
33.3 mm (1.3 in)
1986
56.6 mm (2.2 in)
1987
26.7 mm (1.1 in)
1988
20.3 mm (0.8 in)
1989
22.9 mm (0.9 in)
1990
51.8 mm (2.0 in)
1991
54.9 mm (2.2 in)
1992
24.9 mm (1.0 in)
1993
50.8 mm (2.0 in)
1994
26.7 mm (1.1 in)
1995
39.6 mm (1.6 in)
1996
36.3 mm (1.4 in)
1997
27.9 mm (1.1 in)
1998
27.2 mm (1.1 in)
1999
36.1 mm (1.4 in)
2000
47.0 mm (1.9 in)
2001
41.9 mm (1.6 in)
2002
21.1 mm (0.8 in)
2003
33.8 mm (1.3 in)
2004
45.7 mm (1.8 in)
2005
40.4 mm (1.6 in)
2006
39.6 mm (1.6 in)
2007
74.9 mm (2.9 in)
2008
39.9 mm (1.6 in)
2009
39.1 mm (1.5 in)
2010
74.9 mm (2.9 in)
2011
66.5 mm (2.6 in)
2012
17.3 mm (0.7 in)
2013
76.7 mm (3.0 in)
2014
46.2 mm (1.8 in)
2015
49.8 mm (2.0 in)
2016
46.0 mm (1.8 in)
2017
40.6 mm (1.6 in)
2018
37.1 mm (1.5 in)
2019
33.0 mm (1.3 in)
2020
20.1 mm (0.8 in)
2021
29.5 mm (1.2 in)
2022
47.5 mm (1.9 in)
2023
61.2 mm (2.4 in)
2024
38.9 mm (1.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Sonnette 7 SW, 1965 to 2024. The record is 142.5 mm (5.6 in) in 1978, marked on the chart; the median year is 56.5 mm (2.2 in).
Wettest five days (Rx5day) at Sonnette 7 SW by year
Year
Wettest five days (Rx5day)
1965
3.0 mm (0.12 in)
1966
28.9 mm (1.1 in)
1967
123.2 mm (4.9 in)
1968
55.3 mm (2.2 in)
1969
98.8 mm (3.9 in)
1970
67.0 mm (2.6 in)
1971
83.5 mm (3.3 in)
1972
29.6 mm (1.2 in)
1973
67.0 mm (2.6 in)
1974
67.5 mm (2.7 in)
1975
90.9 mm (3.6 in)
1976
48.7 mm (1.9 in)
1977
41.5 mm (1.6 in)
1978
142.5 mm (5.6 in)
1979
41.2 mm (1.6 in)
1980
72.4 mm (2.9 in)
1981
42.4 mm (1.7 in)
1982
61.0 mm (2.4 in)
1983
32.8 mm (1.3 in)
1984
101.3 mm (4.0 in)
1985
40.9 mm (1.6 in)
1986
70.0 mm (2.8 in)
1987
40.2 mm (1.6 in)
1988
33.8 mm (1.3 in)
1989
44.5 mm (1.8 in)
1990
82.6 mm (3.3 in)
1991
90.8 mm (3.6 in)
1992
30.3 mm (1.2 in)
1993
90.2 mm (3.6 in)
1994
39.5 mm (1.6 in)
1995
74.4 mm (2.9 in)
1996
59.7 mm (2.4 in)
1997
57.6 mm (2.3 in)
1998
52.3 mm (2.1 in)
1999
54.4 mm (2.1 in)
2000
50.0 mm (2.0 in)
2001
43.5 mm (1.7 in)
2002
25.1 mm (1.0 in)
2003
49.9 mm (2.0 in)
2004
49.0 mm (1.9 in)
2005
82.8 mm (3.3 in)
2006
64.1 mm (2.5 in)
2007
103.9 mm (4.1 in)
2008
101.4 mm (4.0 in)
2009
49.0 mm (1.9 in)
2010
97.5 mm (3.8 in)
2011
134.6 mm (5.3 in)
2012
29.3 mm (1.2 in)
2013
139.8 mm (5.5 in)
2014
80.1 mm (3.2 in)
2015
53.6 mm (2.1 in)
2016
53.9 mm (2.1 in)
2017
48.2 mm (1.9 in)
2018
45.5 mm (1.8 in)
2019
58.5 mm (2.3 in)
2020
44.7 mm (1.8 in)
2021
76.2 mm (3.0 in)
2022
49.1 mm (1.9 in)
2023
74.4 mm (2.9 in)
2024
72.4 mm (2.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at Sonnette 7 SW, 1965 to 2024. The record is 68 days in 2001, marked on the chart; the median year is 36 days.
Longest dry spell (CDD) at Sonnette 7 SW by year
Year
Longest dry spell (CDD)
1965
41 days
1966
19 days
1967
34 days
1968
30 days
1969
44 days
1970
29 days
1971
35 days
1972
38 days
1973
30 days
1974
35 days
1975
33 days
1976
43 days
1977
29 days
1978
51 days
1979
26 days
1980
44 days
1981
46 days
1982
23 days
1983
30 days
1984
50 days
1985
44 days
1986
32 days
1987
38 days
1988
40 days
1989
20 days
1990
31 days
1991
32 days
1992
64 days
1993
41 days
1994
44 days
1995
28 days
1996
28 days
1997
50 days
1998
55 days
1999
46 days
2000
55 days
2001
68 days
2002
51 days
2003
45 days
2004
46 days
2005
36 days
2006
47 days
2007
44 days
2008
28 days
2009
43 days
2010
43 days
2011
22 days
2012
45 days
2013
28 days
2014
28 days
2015
27 days
2016
24 days
2017
26 days
2018
28 days
2019
19 days
2020
37 days
2021
32 days
2022
19 days
2023
28 days
2024
40 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
46 years with a frost
Across 46 years with a frost, the median last spring frost at Sonnette 7 SW falls on 29 May and the median first autumn frost on 12 September, which leaves a median of 109 days between them.
Fitted over all years, the growing season changes by +2.7 days per decade at this station.
Frost dates and growing season at Sonnette 7 SW
Measure
Median, all years
Earliest period
Recent period (1986 to 2023)
Recent against earliest
Fitted trend
Last spring frost
29 May
n/a
29 May
n/a
-1.1 days per decade
First autumn frost
12 September
n/a
13 September
n/a
+1.6 days per decade
Growing days
109 days
n/a
110 days
n/a
+2.7 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
49 years, 1966 to 2023
A day with at least 39.3 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 78.8 mm (3.1 in) of rain is expected about once in 100 years.
Rainfall return levels at Sonnette 7 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
39.3 mm (1.5 in)
5 years
52.7 mm (2.1 in)
10 years
60.3 mm (2.4 in)
25 years
68.6 mm (2.7 in)
50 years
74.0 mm (2.9 in)
Longer than the 49 years of record
100 years
78.8 mm (3.1 in)
Longer than the 49 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, 49 years of values from 1966 to 2023.
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: 74.9 mm (2.9 in) in 2007; 74.9 mm (2.9 in) in 2010; 65.5 mm (2.6 in) in 1980.
Station Changes
2 suspected
2 changes were suspected in the annual mean temperature of Sonnette 7 SW, at 2003 and 2016. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 2003 ran 0.4 C (0.7 F) lower than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 2016 ran 0.7 C (1.2 F) higher than in the years before (possible change).
Suspected changes in the annual mean temperature at Sonnette 7 SW, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
2003
-0.4
-0.7
likely
5
2016
+0.7
+1.2
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.
Climate Twins
2006 to 2023 against 1961 to 1990
Over 2006 to 2023, Sonnette 7 SW had a mean temperature of 6.7 C (44.1 F) and 434.5 mm (17.1 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Sundance (United States, 159 km away), Harrison (United States, 335 km away) and Dillinger (United States, 150 km away).
Climate twins of Sonnette 7 SW: stations whose 1961 to 1990 climate is closest to its 2006 to 2023 climate
Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.
Download the Data
Data for Sonnette 7 SW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Sonnette 7 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.