Record envelope, standing records and threshold days for Sonora (USC00418449), Texas, United States, with 125 years of record.
Key Facts for Sonora
Sonora (USC00418449) is a weather station in Texas, United States at 30.55 latitude and -100.65 longitude, 644 m (2,112 ft) above sea level.
The station reports from 1902 to 2026, 125 years of record.
1,464 records set at Sonora still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Sonora set a daily record precipitation of 120.7 mm (4.8 in) on 17 July 2026.
About the Station
Location: Texas, United States, 30.55 latitude, -100.65 longitude.
Elevation: 644 m (2,112 ft).
Period of record: 1902 to 2026, 125 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
10 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 Sonora. The lines show the 2026 daily maximum and minimum. 10 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Sonora, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
30.6 C (87.1 F)
-17.2 C (1.0 F)
26.7 C (80.1 F)
-11.7 C (10.9 F)
Feb
35.6 C (96.1 F)
-22.2 C (-8.0 F)
32.8 C (91.0 F)
-7.2 C (19.0 F)
Mar
36.1 C (97.0 F)
-11.7 C (10.9 F)
34.4 C (93.9 F)
-3.9 C (25.0 F)
Apr
38.9 C (102.0 F)
-7.2 C (19.0 F)
33.3 C (91.9 F)
2.8 C (37.0 F)
May
41.7 C (107.1 F)
0.0 C (32.0 F)
33.3 C (91.9 F)
1.7 C (35.1 F)
Jun
42.8 C (109.0 F)
5.6 C (42.1 F)
38.9 C (102.0 F)
10.6 C (51.1 F)
Jul
42.8 C (109.0 F)
7.8 C (46.0 F)
37.2 C (99.0 F)
7.8 C (46.0 F)
Aug
42.2 C (108.0 F)
7.2 C (45.0 F)
38.9 C (102.0 F)
16.1 C (61.0 F)
Sep
41.7 C (107.1 F)
-1.7 C (28.9 F)
26.1 C (79.0 F)
19.4 C (66.9 F)
Oct
38.9 C (102.0 F)
-7.8 C (18.0 F)
n/a
n/a
Nov
33.3 C (91.9 F)
-12.8 C (9.0 F)
n/a
n/a
Dec
32.2 C (90.0 F)
-16.1 C (3.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Sonora still stand. 1989 holds the most, with 42.
Standing records at Sonora by the year they were set
Year set
Standing records
1903
20
1904
23
1905
15
1906
22
1907
14
1908
33
1909
22
1910
4
1912
21
1913
11
1914
12
1915
15
1916
7
1949
12
1950
24
1951
21
1952
12
1953
16
1954
17
1955
22
1956
10
1957
24
1958
11
1959
16
1960
17
1961
16
1962
15
1963
17
1964
7
1965
16
1966
20
1967
19
1968
12
1969
26
1970
19
1971
20
1972
14
1973
14
1974
19
1975
12
1976
18
1977
12
1978
9
1979
22
1980
26
1981
6
1982
16
1983
12
1984
24
1985
29
1986
22
1987
16
1988
18
1989
42
1990
25
1991
23
1992
12
1993
9
1994
8
1995
19
1996
26
1997
14
1998
25
1999
9
2000
28
2001
9
2002
20
2003
18
2004
12
2005
15
2006
17
2007
11
2008
11
2009
19
2010
7
2011
33
2012
23
2013
14
2014
17
2015
10
2016
16
2017
7
2024
25
2025
27
2026
16
All-Time Record Progression
6 new records
6 all-time records were set at Sonora between 12 August 1972 and 14 August 1987. Each dot is a new record.
When Sonora set new all-time records
Date
Kind
Detail
1972-08-12
Record daily precipitation
Record daily precipitation 157.5 mm (6.2 in)
1976-09-01
Record daily precipitation
Record daily precipitation 201.2 mm (7.9 in)
1980-06-28
Record high maximum temperature
Record high maximum temperature 42.8 C (109.0 F)
1983-12-25
Record low maximum temperature
Record low maximum temperature -7.2 C (19.0 F)
1985-02-01
Record low maximum temperature
Record low maximum temperature -9.4 C (15.1 F)
1987-08-14
Record high minimum temperature
Record high minimum temperature 34.4 C (93.9 F)
Wettest Day of Each Month
Sep: 201.2 mm (7.9 in)
The wettest day on record for each calendar month at Sonora. The most was 201.2 mm (7.9 in) on 1 September 1976.
Record daily precipitation for each month at Sonora
Month
Record daily precipitation (mm)
Date
Jan
59.7 mm (2.4 in)
19 January 1994
Feb
64.0 mm (2.5 in)
22 February 1958
Mar
72.9 mm (2.9 in)
26 March 2007
Apr
83.8 mm (3.3 in)
6 April 1912
May
97.5 mm (3.8 in)
27 May 1957
Jun
107.4 mm (4.2 in)
18 June 2000
Jul
139.7 mm (5.5 in)
13 July 2025
Aug
157.5 mm (6.2 in)
12 August 1972
Sep
201.2 mm (7.9 in)
1 September 1976
Oct
130.8 mm (5.1 in)
13 October 1957
Nov
76.7 mm (3.0 in)
6 November 2014
Dec
62.2 mm (2.4 in)
9 December 1911
Period of Record Coverage
1902 to 2026
Complete yearUnder 90 percent of days
86 years of record at Sonora, 1902 to 2026. 29 years have data for under 90 percent of days and are left out of rankings: 1902, 1907, 1910, 1913, 1916, 1949, 1951, 1956 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 49 complete years at Sonora, 1903 to 2025. Blue stripes are years cooler than the station's own mean of 18.4 C (65.1 F); red stripes are warmer. The coolest year was 1903, at 17.1 C (62.8 F), and the warmest was 1954, at 20.1 C (68.1 F). The strongest colour marks a difference of 1.8 C (3.2 F).
Annual mean temperature at Sonora as warming stripes, 1903 to 2025
Year
Annual mean temperature
Difference from the station mean
1903
17.1 C
-1.27 C
1904
18.2 C
-0.13 C
1905
17.6 C
-0.78 C
1906
17.3 C
-1.09 C
1908
18.3 C
-0.09 C
1914
17.8 C
-0.55 C
1915
17.2 C
-1.18 C
1950
19.0 C
+0.66 C
1952
19.5 C
+1.12 C
1953
19.8 C
+1.47 C
1954
20.1 C
+1.71 C
1955
19.4 C
+1.06 C
1957
18.8 C
+0.45 C
1958
17.9 C
-0.49 C
1960
18.2 C
-0.21 C
1961
18.0 C
-0.40 C
1962
18.8 C
+0.40 C
1963
18.7 C
+0.33 C
1964
18.3 C
-0.10 C
1965
18.6 C
+0.21 C
1966
17.7 C
-0.69 C
1967
18.8 C
+0.43 C
1970
18.3 C
-0.04 C
1971
18.6 C
+0.26 C
1972
18.8 C
+0.47 C
1973
17.9 C
-0.50 C
1974
18.8 C
+0.42 C
1975
18.3 C
-0.12 C
1976
17.4 C
-0.94 C
1977
18.9 C
+0.56 C
1978
18.2 C
-0.19 C
1982
18.3 C
-0.11 C
1996
18.2 C
-0.13 C
1997
17.4 C
-1.01 C
1998
19.0 C
+0.63 C
1999
18.5 C
+0.17 C
2000
19.0 C
+0.62 C
2001
18.5 C
+0.11 C
2002
17.9 C
-0.49 C
2003
18.1 C
-0.30 C
2004
17.9 C
-0.51 C
2005
18.3 C
-0.06 C
2006
19.2 C
+0.78 C
2007
17.6 C
-0.75 C
2008
18.1 C
-0.32 C
2009
18.3 C
-0.11 C
2012
19.4 C
+1.01 C
2013
18.0 C
-0.33 C
2025
18.3 C
-0.07 C
The fitted trend in annual mean temperature here over 1903 to 2025 is 0.04 C (-0.02 to 0.10) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.07 F (-0.04 to 0.17) per decade. The slope is a straight line fitted to 49 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Sonora
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.04 C (-0.02 to 0.10) per decade
0.07 F (-0.04 to 0.17) per decade
1903 to 2025
49
Not clearly different from zero
Mean daily maximum
0.06 C (-0.02 to 0.14) per decade
0.11 F (-0.03 to 0.25) per decade
1903 to 2025
49
Not clearly different from zero
Mean daily minimum
0.01 C (-0.06 to 0.08) per decade
0.02 F (-0.10 to 0.14) per decade
1903 to 2025
49
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
1902 to 2026
Yearly extremes at Sonora: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
42.8 C (109.0 F)
1980
39.7 C (103.5 F)
86
Coldest night (TNn)
-22.2 C (-8.0 F)
1951
-11.7 C (10.9 F)
86
Wettest day (Rx1day)
201.2 mm (7.9 in)
1976
62.4 mm (2.5 in)
88
Wettest five days (Rx5day)
457.3 mm (18.0 in)
1993
88.5 mm (3.5 in)
88
Longest dry spell (CDD)
87 days
1912
38 days
88
Hottest day (TXx)
The hottest day of the year at Sonora, 1902 to 2026. The record is 42.8 C (109.0 F) in 1980, marked on the chart; the median year is 39.7 C (103.5 F).
Hottest day (TXx) at Sonora by year
Year
Hottest day (TXx)
1902
23.3 C (73.9 F)
1903
37.8 C (100.0 F)
1904
38.3 C (100.9 F)
1905
39.4 C (102.9 F)
1906
38.3 C (100.9 F)
1907
40.6 C (105.1 F)
1908
40.6 C (105.1 F)
1909
41.1 C (106.0 F)
1910
37.8 C (100.0 F)
1911
n/a
1912
42.2 C (108.0 F)
1913
37.8 C (100.0 F)
1914
40.0 C (104.0 F)
1915
37.8 C (100.0 F)
1916
33.9 C (93.0 F)
1949
39.4 C (102.9 F)
1950
38.3 C (100.9 F)
1951
40.6 C (105.1 F)
1952
40.0 C (104.0 F)
1953
40.6 C (105.1 F)
1954
40.6 C (105.1 F)
1955
37.8 C (100.0 F)
1956
39.4 C (102.9 F)
1957
40.0 C (104.0 F)
1958
38.9 C (102.0 F)
1959
38.3 C (100.9 F)
1960
42.2 C (108.0 F)
1961
37.8 C (100.0 F)
1962
40.6 C (105.1 F)
1963
37.8 C (100.0 F)
1964
39.4 C (102.9 F)
1965
37.2 C (99.0 F)
1966
37.8 C (100.0 F)
1967
40.0 C (104.0 F)
1968
39.4 C (102.9 F)
1969
41.7 C (107.1 F)
1970
39.4 C (102.9 F)
1971
37.8 C (100.0 F)
1972
40.0 C (104.0 F)
1973
38.9 C (102.0 F)
1974
40.6 C (105.1 F)
1975
37.2 C (99.0 F)
1976
37.2 C (99.0 F)
1977
41.1 C (106.0 F)
1978
42.2 C (108.0 F)
1979
38.3 C (100.9 F)
1980
42.8 C (109.0 F)
1981
38.9 C (102.0 F)
1982
40.6 C (105.1 F)
1983
39.4 C (102.9 F)
1984
41.7 C (107.1 F)
1985
40.0 C (104.0 F)
1986
42.2 C (108.0 F)
1987
39.4 C (102.9 F)
1988
40.6 C (105.1 F)
1989
42.2 C (108.0 F)
1990
40.0 C (104.0 F)
1991
38.9 C (102.0 F)
1992
40.0 C (104.0 F)
1993
40.0 C (104.0 F)
1994
40.0 C (104.0 F)
1995
42.2 C (108.0 F)
1996
40.6 C (105.1 F)
1997
38.3 C (100.9 F)
1998
41.1 C (106.0 F)
1999
39.4 C (102.9 F)
2000
41.7 C (107.1 F)
2001
39.4 C (102.9 F)
2002
38.9 C (102.0 F)
2003
40.6 C (105.1 F)
2004
38.9 C (102.0 F)
2005
40.6 C (105.1 F)
2006
39.4 C (102.9 F)
2007
35.6 C (96.1 F)
2008
38.3 C (100.9 F)
2009
40.6 C (105.1 F)
2010
38.9 C (102.0 F)
2011
41.7 C (107.1 F)
2012
40.6 C (105.1 F)
2013
41.1 C (106.0 F)
2014
40.0 C (104.0 F)
2015
40.0 C (104.0 F)
2016
42.8 C (109.0 F)
2017
35.0 C (95.0 F)
2018
n/a
2024
41.7 C (107.1 F)
2025
38.3 C (100.9 F)
2026
38.9 C (102.0 F)
Coldest night (TNn)
The coldest night of the year at Sonora, 1902 to 2026. The record is -22.2 C (-8.0 F) in 1951, marked on the chart; the median year is -11.7 C (10.9 F).
Coldest night (TNn) at Sonora by year
Year
Coldest night (TNn)
1902
-5.0 C (23.0 F)
1903
-9.4 C (15.1 F)
1904
-15.0 C (5.0 F)
1905
-14.4 C (6.1 F)
1906
-13.3 C (8.1 F)
1907
-7.8 C (18.0 F)
1908
-13.9 C (7.0 F)
1909
-13.9 C (7.0 F)
1910
-12.2 C (10.0 F)
1911
n/a
1912
-12.8 C (9.0 F)
1913
-12.8 C (9.0 F)
1914
-10.6 C (12.9 F)
1915
-12.2 C (10.0 F)
1916
-10.6 C (12.9 F)
1949
-12.2 C (10.0 F)
1950
-12.8 C (9.0 F)
1951
-22.2 C (-8.0 F)
1952
-6.1 C (21.0 F)
1953
-11.7 C (10.9 F)
1954
-7.2 C (19.0 F)
1955
-8.9 C (16.0 F)
1956
-8.9 C (16.0 F)
1957
-10.0 C (14.0 F)
1958
-9.4 C (15.1 F)
1959
-12.8 C (9.0 F)
1960
-12.2 C (10.0 F)
1961
-10.0 C (14.0 F)
1962
-16.1 C (3.0 F)
1963
-17.2 C (1.0 F)
1964
-11.1 C (12.0 F)
1965
-9.4 C (15.1 F)
1966
-12.2 C (10.0 F)
1967
-10.6 C (12.9 F)
1968
-10.6 C (12.9 F)
1969
-8.3 C (17.1 F)
1970
-13.9 C (7.0 F)
1971
-12.8 C (9.0 F)
1972
-13.3 C (8.1 F)
1973
-13.3 C (8.1 F)
1974
-12.8 C (9.0 F)
1975
-9.4 C (15.1 F)
1976
-13.3 C (8.1 F)
1977
-12.2 C (10.0 F)
1978
-11.1 C (12.0 F)
1979
-15.0 C (5.0 F)
1980
-10.0 C (14.0 F)
1981
-11.7 C (10.9 F)
1982
-11.1 C (12.0 F)
1983
-16.1 C (3.0 F)
1984
-12.8 C (9.0 F)
1985
-20.6 C (-5.1 F)
1986
-7.2 C (19.0 F)
1987
-11.7 C (10.9 F)
1988
-14.4 C (6.1 F)
1989
-13.9 C (7.0 F)
1990
-7.2 C (19.0 F)
1991
-12.2 C (10.0 F)
1992
-8.9 C (16.0 F)
1993
-9.4 C (15.1 F)
1994
-13.3 C (8.1 F)
1995
-6.7 C (19.9 F)
1996
-13.9 C (7.0 F)
1997
-12.2 C (10.0 F)
1998
-7.8 C (18.0 F)
1999
-12.2 C (10.0 F)
2000
-10.6 C (12.9 F)
2001
-7.2 C (19.0 F)
2002
-13.9 C (7.0 F)
2003
-10.0 C (14.0 F)
2004
-11.1 C (12.0 F)
2005
-13.9 C (7.0 F)
2006
-11.7 C (10.9 F)
2007
-9.4 C (15.1 F)
2008
-10.6 C (12.9 F)
2009
-9.4 C (15.1 F)
2010
-9.4 C (15.1 F)
2011
-13.3 C (8.1 F)
2012
-10.6 C (12.9 F)
2013
-8.9 C (16.0 F)
2014
-10.6 C (12.9 F)
2015
-8.9 C (16.0 F)
2016
-8.9 C (16.0 F)
2017
-8.9 C (16.0 F)
2018
n/a
2024
-7.2 C (19.0 F)
2025
-13.3 C (8.1 F)
2026
-11.7 C (10.9 F)
Wettest day (Rx1day)
The wettest day of the year at Sonora, 1902 to 2026. The record is 201.2 mm (7.9 in) in 1976, marked on the chart; the median year is 62.4 mm (2.5 in).
Wettest day (Rx1day) at Sonora by year
Year
Wettest day (Rx1day)
1902
4.1 mm (0.16 in)
1903
43.7 mm (1.7 in)
1904
49.5 mm (1.9 in)
1905
45.7 mm (1.8 in)
1906
59.7 mm (2.4 in)
1907
80.0 mm (3.1 in)
1908
75.7 mm (3.0 in)
1909
70.1 mm (2.8 in)
1910
47.5 mm (1.9 in)
1911
62.2 mm (2.4 in)
1912
83.8 mm (3.3 in)
1913
69.9 mm (2.8 in)
1914
102.6 mm (4.0 in)
1915
101.6 mm (4.0 in)
1916
46.5 mm (1.8 in)
1949
55.9 mm (2.2 in)
1950
88.9 mm (3.5 in)
1951
50.8 mm (2.0 in)
1952
42.2 mm (1.7 in)
1953
59.2 mm (2.3 in)
1954
43.9 mm (1.7 in)
1955
38.1 mm (1.5 in)
1956
35.3 mm (1.4 in)
1957
130.8 mm (5.1 in)
1958
64.0 mm (2.5 in)
1959
84.1 mm (3.3 in)
1960
32.3 mm (1.3 in)
1961
63.5 mm (2.5 in)
1962
84.8 mm (3.3 in)
1963
36.8 mm (1.4 in)
1964
51.6 mm (2.0 in)
1965
55.9 mm (2.2 in)
1966
66.5 mm (2.6 in)
1967
46.0 mm (1.8 in)
1968
45.7 mm (1.8 in)
1969
61.2 mm (2.4 in)
1970
38.9 mm (1.5 in)
1971
63.0 mm (2.5 in)
1972
157.5 mm (6.2 in)
1973
82.6 mm (3.3 in)
1974
104.1 mm (4.1 in)
1975
53.6 mm (2.1 in)
1976
201.2 mm (7.9 in)
1977
82.8 mm (3.3 in)
1978
76.2 mm (3.0 in)
1979
62.7 mm (2.5 in)
1980
83.8 mm (3.3 in)
1981
98.3 mm (3.9 in)
1982
40.6 mm (1.6 in)
1983
88.9 mm (3.5 in)
1984
62.5 mm (2.5 in)
1985
38.1 mm (1.5 in)
1986
110.5 mm (4.4 in)
1987
68.3 mm (2.7 in)
1988
52.1 mm (2.1 in)
1989
83.8 mm (3.3 in)
1990
123.2 mm (4.9 in)
1991
76.2 mm (3.0 in)
1992
47.5 mm (1.9 in)
1993
152.4 mm (6.0 in)
1994
59.7 mm (2.4 in)
1995
58.2 mm (2.3 in)
1996
59.7 mm (2.4 in)
1997
54.1 mm (2.1 in)
1998
65.8 mm (2.6 in)
1999
28.4 mm (1.1 in)
2000
107.4 mm (4.2 in)
2001
58.9 mm (2.3 in)
2002
71.6 mm (2.8 in)
2003
74.9 mm (2.9 in)
2004
101.6 mm (4.0 in)
2005
51.1 mm (2.0 in)
2006
43.2 mm (1.7 in)
2007
76.2 mm (3.0 in)
2008
57.2 mm (2.3 in)
2009
62.2 mm (2.4 in)
2010
49.5 mm (1.9 in)
2011
49.5 mm (1.9 in)
2012
63.5 mm (2.5 in)
2013
54.9 mm (2.2 in)
2014
76.7 mm (3.0 in)
2015
82.6 mm (3.3 in)
2016
55.9 mm (2.2 in)
2017
67.3 mm (2.6 in)
2018
0.0 mm (0.00 in)
2024
38.1 mm (1.5 in)
2025
139.7 mm (5.5 in)
2026
120.7 mm (4.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Sonora, 1902 to 2026. The record is 457.3 mm (18.0 in) in 1993, marked on the chart; the median year is 88.5 mm (3.5 in).
Wettest five days (Rx5day) at Sonora by year
Year
Wettest five days (Rx5day)
1902
4.1 mm (0.16 in)
1903
93.3 mm (3.7 in)
1904
64.2 mm (2.5 in)
1905
56.5 mm (2.2 in)
1906
164.5 mm (6.5 in)
1907
134.3 mm (5.3 in)
1908
92.2 mm (3.6 in)
1909
70.1 mm (2.8 in)
1910
47.5 mm (1.9 in)
1911
69.0 mm (2.7 in)
1912
83.8 mm (3.3 in)
1913
69.9 mm (2.8 in)
1914
189.5 mm (7.5 in)
1915
108.0 mm (4.3 in)
1916
84.6 mm (3.3 in)
1949
98.2 mm (3.9 in)
1950
102.2 mm (4.0 in)
1951
63.5 mm (2.5 in)
1952
52.4 mm (2.1 in)
1953
59.2 mm (2.3 in)
1954
88.9 mm (3.5 in)
1955
79.0 mm (3.1 in)
1956
63.2 mm (2.5 in)
1957
198.9 mm (7.8 in)
1958
99.0 mm (3.9 in)
1959
149.6 mm (5.9 in)
1960
59.7 mm (2.4 in)
1961
119.1 mm (4.7 in)
1962
137.9 mm (5.4 in)
1963
70.5 mm (2.8 in)
1964
135.8 mm (5.3 in)
1965
93.8 mm (3.7 in)
1966
73.7 mm (2.9 in)
1967
100.6 mm (4.0 in)
1968
72.6 mm (2.9 in)
1969
111.2 mm (4.4 in)
1970
57.7 mm (2.3 in)
1971
142.9 mm (5.6 in)
1972
271.8 mm (10.7 in)
1973
110.2 mm (4.3 in)
1974
165.8 mm (6.5 in)
1975
55.6 mm (2.2 in)
1976
227.7 mm (9.0 in)
1977
133.6 mm (5.3 in)
1978
154.0 mm (6.1 in)
1979
67.3 mm (2.6 in)
1980
170.2 mm (6.7 in)
1981
107.9 mm (4.2 in)
1982
53.8 mm (2.1 in)
1983
88.9 mm (3.5 in)
1984
78.0 mm (3.1 in)
1985
84.6 mm (3.3 in)
1986
131.1 mm (5.2 in)
1987
86.1 mm (3.4 in)
1988
60.5 mm (2.4 in)
1989
115.6 mm (4.6 in)
1990
206.8 mm (8.1 in)
1991
108.3 mm (4.3 in)
1992
64.0 mm (2.5 in)
1993
457.3 mm (18.0 in)
1994
100.3 mm (3.9 in)
1995
122.9 mm (4.8 in)
1996
69.8 mm (2.7 in)
1997
54.9 mm (2.2 in)
1998
95.4 mm (3.8 in)
1999
36.3 mm (1.4 in)
2000
137.4 mm (5.4 in)
2001
70.1 mm (2.8 in)
2002
149.6 mm (5.9 in)
2003
138.4 mm (5.4 in)
2004
130.6 mm (5.1 in)
2005
77.2 mm (3.0 in)
2006
43.2 mm (1.7 in)
2007
127.0 mm (5.0 in)
2008
88.1 mm (3.5 in)
2009
83.6 mm (3.3 in)
2010
59.7 mm (2.4 in)
2011
50.5 mm (2.0 in)
2012
63.5 mm (2.5 in)
2013
89.7 mm (3.5 in)
2014
2.5 mm (0.10 in)
2015
86.2 mm (3.4 in)
2016
67.1 mm (2.6 in)
2017
81.3 mm (3.2 in)
2018
0.0 mm (0.00 in)
2024
63.3 mm (2.5 in)
2025
167.1 mm (6.6 in)
2026
232.7 mm (9.2 in)
Longest dry spell (CDD)
The longest dry spell of the year at Sonora, 1902 to 2026. The record is 87 days in 1912, marked on the chart; the median year is 38 days.
Longest dry spell (CDD) at Sonora by year
Year
Longest dry spell (CDD)
1902
16 days
1903
41 days
1904
41 days
1905
35 days
1906
26 days
1907
37 days
1908
26 days
1909
47 days
1910
59 days
1911
12 days
1912
87 days
1913
30 days
1914
48 days
1915
74 days
1916
27 days
1949
39 days
1950
72 days
1951
44 days
1952
41 days
1953
61 days
1954
65 days
1955
84 days
1956
52 days
1957
32 days
1958
28 days
1959
51 days
1960
53 days
1961
46 days
1962
30 days
1963
44 days
1964
28 days
1965
23 days
1966
86 days
1967
49 days
1968
31 days
1969
33 days
1970
66 days
1971
51 days
1972
37 days
1973
61 days
1974
43 days
1975
61 days
1976
30 days
1977
33 days
1978
47 days
1979
56 days
1980
39 days
1981
32 days
1982
29 days
1983
34 days
1984
64 days
1985
21 days
1986
40 days
1987
30 days
1988
32 days
1989
43 days
1990
45 days
1991
37 days
1992
48 days
1993
29 days
1994
77 days
1995
28 days
1996
31 days
1997
30 days
1998
48 days
1999
42 days
2000
45 days
2001
45 days
2002
41 days
2003
44 days
2004
25 days
2005
47 days
2006
55 days
2007
37 days
2008
31 days
2009
34 days
2010
9 days
2011
52 days
2012
32 days
2013
28 days
2014
28 days
2015
25 days
2016
26 days
2017
29 days
2018
31 days
2024
31 days
2025
37 days
2026
23 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
49 years with a frost
Across 49 years with a frost, the median last spring frost at Sonora falls on 1 April and the median first autumn frost on 4 November, which leaves a median of 218 days between them.
Fitted over all years, the growing season changes by +1.2 days per decade at this station.
Frost dates and growing season at Sonora
Measure
Median, all years
Earliest period
Recent period (1965 to 2025)
Recent against earliest
Fitted trend
Last spring frost
1 April
n/a
2 April
n/a
-0.4 days per decade
First autumn frost
4 November
n/a
5 November
n/a
+0.8 days per decade
Growing days
218 days
n/a
221 days
n/a
+1.2 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
64 years, 1903 to 2025
A day with at least 63.2 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 185.0 mm (7.3 in) of rain is expected about once in 100 years.
Rainfall return levels at Sonora: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
63.2 mm (2.5 in)
5 years
88.5 mm (3.5 in)
10 years
107.9 mm (4.2 in)
25 years
135.7 mm (5.3 in)
50 years
159.1 mm (6.3 in)
100 years
185.0 mm (7.3 in)
Longer than the 64 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, 64 years of values from 1903 to 2025.
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: 201.2 mm (7.9 in) in 1976; 157.5 mm (6.2 in) in 1972; 139.7 mm (5.5 in) in 2025.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Sonora standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Sonora 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.