Record envelope, standing records and threshold days for Nogales (USC00025921), Arizona, United States, with 92 years of record.
Key Facts for Nogales
Nogales (USC00025921) is a weather station in Arizona, United States at 31.35 latitude and -110.92 longitude, 1,162 m (3,812 ft) above sea level.
The station reports from 1892 to 1983, 92 years of record.
1,464 records set at Nogales still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Nogales set a daily record low minimum temperature of 8.3 C (46.9 F) on 25 June 1983.
About the Station
Location: Arizona, United States, 31.35 latitude, -110.92 longitude.
Elevation: 1,162 m (3,812 ft).
Period of record: 1892 to 1983, 92 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 Nogales. 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 Nogales, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
31.1 C (88.0 F)
-14.4 C (6.1 F)
n/a
n/a
Feb
31.7 C (89.1 F)
-12.8 C (9.0 F)
n/a
n/a
Mar
35.0 C (95.0 F)
-10.6 C (12.9 F)
n/a
n/a
Apr
37.8 C (100.0 F)
-6.1 C (21.0 F)
n/a
n/a
May
41.1 C (106.0 F)
-4.4 C (24.1 F)
n/a
n/a
Jun
43.3 C (109.9 F)
1.7 C (35.1 F)
n/a
n/a
Jul
42.8 C (109.0 F)
7.2 C (45.0 F)
n/a
n/a
Aug
42.2 C (108.0 F)
6.1 C (43.0 F)
n/a
n/a
Sep
40.6 C (105.1 F)
0.0 C (32.0 F)
n/a
n/a
Oct
37.2 C (99.0 F)
-7.2 C (19.0 F)
n/a
n/a
Nov
33.9 C (93.0 F)
-11.7 C (10.9 F)
n/a
n/a
Dec
28.9 C (84.0 F)
-19.4 C (-2.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Nogales still stand. 1934 holds the most, with 49.
Standing records at Nogales by the year they were set
Year set
Standing records
1892
8
1895
15
1899
3
1900
11
1901
10
1902
17
1903
5
1904
4
1909
15
1910
5
1913
3
1914
9
1915
21
1916
19
1917
13
1918
19
1919
20
1920
24
1921
21
1922
25
1923
18
1924
12
1925
20
1926
33
1927
30
1928
28
1929
12
1930
27
1931
19
1932
17
1933
27
1934
49
1935
19
1936
30
1937
20
1938
24
1939
14
1940
38
1941
10
1942
14
1943
39
1944
21
1945
8
1946
23
1947
14
1948
22
1949
28
1950
36
1951
26
1952
14
1953
33
1954
16
1955
39
1956
28
1957
24
1958
15
1959
12
1960
15
1961
7
1962
18
1963
5
1964
26
1965
27
1966
15
1967
10
1968
22
1969
9
1970
22
1971
20
1972
14
1973
14
1974
9
1975
18
1976
10
1977
9
1978
14
1979
14
1980
18
1981
9
1982
9
1983
4
All-Time Record Progression
6 new records
6 all-time records were set at Nogales between 18 June 1940 and 8 December 1978. Each dot is a new record.
When Nogales set new all-time records
Date
Kind
Detail
1940-06-18
Record high maximum temperature
Record high maximum temperature 43.3 C (109.9 F)
1947-01-02
Record daily snowfall
Record daily snowfall 25.4 cm (10.0 in)
1948-01-29
Record low minimum temperature
Record low minimum temperature -14.4 C (6.1 F)
1949-01-03
Record low maximum temperature
Record low maximum temperature 1.1 C (34.0 F)
1978-12-07
Record daily snowfall
Record daily snowfall 30.5 cm (12.0 in)
1978-12-08
Record low minimum temperature
Record low minimum temperature -19.4 C (-2.9 F)
Wettest Day of Each Month
Jan: 96.8 mm (3.8 in)
The wettest day on record for each calendar month at Nogales. The most was 96.8 mm (3.8 in) on 19 January 1916.
Record daily precipitation for each month at Nogales
Month
Record daily precipitation (mm)
Date
Jan
96.8 mm (3.8 in)
19 January 1916
Feb
39.4 mm (1.6 in)
21 February 1973
Mar
50.8 mm (2.0 in)
17 March 1894
Apr
21.6 mm (0.9 in)
12 April 1941
May
19.6 mm (0.8 in)
20 May 1947
Jun
32.3 mm (1.3 in)
30 June 1932
Jul
77.2 mm (3.0 in)
29 July 1931
Aug
56.9 mm (2.2 in)
7 August 1930
Sep
59.9 mm (2.4 in)
7 September 1919
Oct
77.7 mm (3.1 in)
8 October 1977
Nov
53.3 mm (2.1 in)
24 November 1978
Dec
65.3 mm (2.6 in)
15 December 1967
Period of Record Coverage
1892 to 1983
Complete yearUnder 90 percent of days
82 years of record at Nogales, 1892 to 1983. 12 years have data for under 90 percent of days and are left out of rankings: 1892, 1894, 1895, 1899, 1902, 1903, 1904, 1909 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 64 complete years at Nogales, 1914 to 1982. Blue stripes are years cooler than the station's own mean of 16.4 C (61.5 F); red stripes are warmer. The coolest year was 1964, at 14.7 C (58.5 F), and the warmest was 1943, at 18.8 C (65.9 F). The strongest colour marks a difference of 2.5 C (4.5 F).
Annual mean temperature at Nogales as warming stripes, 1914 to 1982
Year
Annual mean temperature
Difference from the station mean
1914
16.5 C
+0.07 C
1915
15.7 C
-0.69 C
1917
16.2 C
-0.20 C
1918
16.3 C
-0.13 C
1919
15.7 C
-0.71 C
1920
15.7 C
-0.67 C
1922
16.0 C
-0.45 C
1923
15.4 C
-1.00 C
1924
15.9 C
-0.52 C
1925
16.5 C
+0.04 C
1926
17.8 C
+1.43 C
1927
18.0 C
+1.63 C
1928
18.0 C
+1.57 C
1929
17.5 C
+1.04 C
1930
17.4 C
+0.98 C
1931
17.7 C
+1.33 C
1932
17.5 C
+1.11 C
1933
17.9 C
+1.47 C
1934
18.3 C
+1.91 C
1936
18.5 C
+2.08 C
1937
18.2 C
+1.81 C
1939
17.9 C
+1.49 C
1940
18.7 C
+2.33 C
1941
17.5 C
+1.04 C
1942
18.1 C
+1.67 C
1943
18.8 C
+2.41 C
1944
17.2 C
+0.75 C
1945
15.8 C
-0.64 C
1946
15.6 C
-0.86 C
1947
15.6 C
-0.86 C
1948
15.7 C
-0.76 C
1949
15.3 C
-1.09 C
1950
16.3 C
-0.11 C
1951
15.8 C
-0.57 C
1952
15.5 C
-0.88 C
1953
15.3 C
-1.12 C
1954
16.4 C
-0.04 C
1955
15.0 C
-1.41 C
1956
15.4 C
-1.00 C
1957
16.0 C
-0.45 C
1958
16.0 C
-0.46 C
1959
15.9 C
-0.47 C
1960
15.6 C
-0.86 C
1961
15.8 C
-0.57 C
1962
15.9 C
-0.56 C
1963
16.0 C
-0.46 C
1964
14.7 C
-1.69 C
1965
15.6 C
-0.80 C
1967
15.7 C
-0.68 C
1968
15.6 C
-0.83 C
1969
16.1 C
-0.31 C
1970
16.0 C
-0.42 C
1971
15.4 C
-0.97 C
1972
16.2 C
-0.21 C
1973
15.7 C
-0.69 C
1974
16.2 C
-0.20 C
1975
15.6 C
-0.80 C
1976
15.6 C
-0.81 C
1977
16.4 C
+0.02 C
1978
16.4 C
+0.01 C
1979
16.0 C
-0.38 C
1980
16.7 C
+0.25 C
1981
16.9 C
+0.48 C
1982
16.1 C
-0.30 C
The annual mean temperature here has fallen by 0.2 C (0.1 to 0.3) per decade over 1914 to 1982. In Fahrenheit: 0.3 F (0.1 to 0.6) per decade. The slope is a straight line fitted to 64 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Nogales
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.2 C (-0.3 to -0.1) per decade
-0.3 F (-0.6 to -0.1) per decade
1914 to 1982
64
Fall
Mean daily maximum
0.02 C (-0.07 to 0.10) per decade
0.03 F (-0.12 to 0.18) per decade
1914 to 1982
64
Not clearly different from zero
Mean daily minimum
-0.4 C (-0.6 to -0.2) per decade
-0.7 F (-1.0 to -0.4) per decade
1914 to 1982
64
Fall
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
1892 to 1983
Yearly extremes at Nogales: 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)
1940
40.0 C (104.0 F)
82
Coldest night (TNn)
-19.4 C (-2.9 F)
1978
-9.4 C (15.1 F)
82
Wettest day (Rx1day)
96.8 mm (3.8 in)
1916
38.4 mm (1.5 in)
83
Wettest five days (Rx5day)
210.8 mm (8.3 in)
1977
60.1 mm (2.4 in)
83
Longest dry spell (CDD)
149 days
1972
67 days
83
Hottest day (TXx)
The hottest day of the year at Nogales, 1892 to 1983. The record is 43.3 C (109.9 F) in 1940, marked on the chart; the median year is 40.0 C (104.0 F).
Hottest day (TXx) at Nogales by year
Year
Hottest day (TXx)
1892
23.9 C (75.0 F)
1893
n/a
1894
25.6 C (78.1 F)
1895
35.0 C (95.0 F)
1899
39.4 C (102.9 F)
1900
41.1 C (106.0 F)
1901
41.1 C (106.0 F)
1902
41.7 C (107.1 F)
1903
39.4 C (102.9 F)
1904
31.1 C (88.0 F)
1909
41.1 C (106.0 F)
1910
31.1 C (88.0 F)
1913
21.1 C (70.0 F)
1914
38.3 C (100.9 F)
1915
39.4 C (102.9 F)
1916
40.6 C (105.1 F)
1917
40.0 C (104.0 F)
1918
40.0 C (104.0 F)
1919
41.1 C (106.0 F)
1920
42.2 C (108.0 F)
1921
40.6 C (105.1 F)
1922
42.8 C (109.0 F)
1923
41.1 C (106.0 F)
1924
41.7 C (107.1 F)
1925
38.9 C (102.0 F)
1926
40.6 C (105.1 F)
1927
40.6 C (105.1 F)
1928
40.6 C (105.1 F)
1929
42.2 C (108.0 F)
1930
41.1 C (106.0 F)
1931
39.4 C (102.9 F)
1932
41.1 C (106.0 F)
1933
42.2 C (108.0 F)
1934
41.1 C (106.0 F)
1935
39.4 C (102.9 F)
1936
41.7 C (107.1 F)
1937
40.6 C (105.1 F)
1938
41.7 C (107.1 F)
1939
41.1 C (106.0 F)
1940
43.3 C (109.9 F)
1941
41.1 C (106.0 F)
1942
42.2 C (108.0 F)
1943
41.1 C (106.0 F)
1944
42.2 C (108.0 F)
1945
39.4 C (102.9 F)
1946
39.4 C (102.9 F)
1947
40.6 C (105.1 F)
1948
40.0 C (104.0 F)
1949
39.4 C (102.9 F)
1950
41.1 C (106.0 F)
1951
40.0 C (104.0 F)
1952
39.4 C (102.9 F)
1953
40.0 C (104.0 F)
1954
39.4 C (102.9 F)
1955
40.0 C (104.0 F)
1956
39.4 C (102.9 F)
1957
40.0 C (104.0 F)
1958
41.1 C (106.0 F)
1959
38.3 C (100.9 F)
1960
41.1 C (106.0 F)
1961
40.0 C (104.0 F)
1962
39.4 C (102.9 F)
1963
38.9 C (102.0 F)
1964
40.0 C (104.0 F)
1965
40.0 C (104.0 F)
1966
38.3 C (100.9 F)
1967
37.8 C (100.0 F)
1968
40.6 C (105.1 F)
1969
40.0 C (104.0 F)
1970
40.6 C (105.1 F)
1971
40.0 C (104.0 F)
1972
39.4 C (102.9 F)
1973
41.1 C (106.0 F)
1974
41.1 C (106.0 F)
1975
39.4 C (102.9 F)
1976
38.3 C (100.9 F)
1977
38.9 C (102.0 F)
1978
40.0 C (104.0 F)
1979
40.6 C (105.1 F)
1980
40.0 C (104.0 F)
1981
39.4 C (102.9 F)
1982
39.4 C (102.9 F)
1983
36.7 C (98.1 F)
Coldest night (TNn)
The coldest night of the year at Nogales, 1892 to 1983. The record is -19.4 C (-2.9 F) in 1978, marked on the chart; the median year is -9.4 C (15.1 F).
Coldest night (TNn) at Nogales by year
Year
Coldest night (TNn)
1892
-2.2 C (28.0 F)
1893
n/a
1894
-1.7 C (28.9 F)
1895
-6.7 C (19.9 F)
1899
-7.8 C (18.0 F)
1900
-4.4 C (24.1 F)
1901
-10.6 C (12.9 F)
1902
-6.7 C (19.9 F)
1903
-7.2 C (19.0 F)
1904
-10.0 C (14.0 F)
1909
-7.8 C (18.0 F)
1910
-8.9 C (16.0 F)
1913
-5.0 C (23.0 F)
1914
-7.2 C (19.0 F)
1915
-8.3 C (17.1 F)
1916
-11.1 C (12.0 F)
1917
-7.8 C (18.0 F)
1918
-8.9 C (16.0 F)
1919
-9.4 C (15.1 F)
1920
-8.9 C (16.0 F)
1921
-9.4 C (15.1 F)
1922
-10.6 C (12.9 F)
1923
-8.9 C (16.0 F)
1924
-8.9 C (16.0 F)
1925
-11.7 C (10.9 F)
1926
-7.8 C (18.0 F)
1927
-5.0 C (23.0 F)
1928
-6.1 C (21.0 F)
1929
-6.7 C (19.9 F)
1930
-6.1 C (21.0 F)
1931
-5.6 C (21.9 F)
1932
-8.3 C (17.1 F)
1933
-9.4 C (15.1 F)
1934
-5.0 C (23.0 F)
1935
-7.2 C (19.0 F)
1936
-4.4 C (24.1 F)
1937
-10.6 C (12.9 F)
1938
-5.0 C (23.0 F)
1939
-8.3 C (17.1 F)
1940
-5.6 C (21.9 F)
1941
-5.6 C (21.9 F)
1942
-4.4 C (24.1 F)
1943
-3.3 C (26.1 F)
1944
-7.8 C (18.0 F)
1945
-9.4 C (15.1 F)
1946
-11.1 C (12.0 F)
1947
-10.6 C (12.9 F)
1948
-14.4 C (6.1 F)
1949
-13.9 C (7.0 F)
1950
-12.2 C (10.0 F)
1951
-10.0 C (14.0 F)
1952
-9.4 C (15.1 F)
1953
-12.8 C (9.0 F)
1954
-12.8 C (9.0 F)
1955
-12.8 C (9.0 F)
1956
-11.7 C (10.9 F)
1957
-9.4 C (15.1 F)
1958
-11.7 C (10.9 F)
1959
-10.0 C (14.0 F)
1960
-12.8 C (9.0 F)
1961
-7.2 C (19.0 F)
1962
-12.8 C (9.0 F)
1963
-12.2 C (10.0 F)
1964
-13.3 C (8.1 F)
1965
-10.6 C (12.9 F)
1966
-10.6 C (12.9 F)
1967
-12.2 C (10.0 F)
1968
-12.2 C (10.0 F)
1969
-10.0 C (14.0 F)
1970
-11.1 C (12.0 F)
1971
-13.3 C (8.1 F)
1972
-11.1 C (12.0 F)
1973
-8.9 C (16.0 F)
1974
-13.9 C (7.0 F)
1975
-10.0 C (14.0 F)
1976
-10.6 C (12.9 F)
1977
-7.8 C (18.0 F)
1978
-19.4 C (-2.9 F)
1979
-10.0 C (14.0 F)
1980
-7.8 C (18.0 F)
1981
-10.0 C (14.0 F)
1982
-8.3 C (17.1 F)
1983
-7.2 C (19.0 F)
Wettest day (Rx1day)
The wettest day of the year at Nogales, 1892 to 1983. The record is 96.8 mm (3.8 in) in 1916, marked on the chart; the median year is 38.4 mm (1.5 in).
Wettest day (Rx1day) at Nogales by year
Year
Wettest day (Rx1day)
1892
6.4 mm (0.25 in)
1893
2.5 mm (0.10 in)
1894
50.8 mm (2.0 in)
1895
41.4 mm (1.6 in)
1899
23.6 mm (0.9 in)
1900
49.0 mm (1.9 in)
1901
50.8 mm (2.0 in)
1902
31.2 mm (1.2 in)
1903
24.9 mm (1.0 in)
1904
19.3 mm (0.8 in)
1909
36.3 mm (1.4 in)
1910
12.7 mm (0.5 in)
1913
3.0 mm (0.12 in)
1914
45.7 mm (1.8 in)
1915
30.5 mm (1.2 in)
1916
96.8 mm (3.8 in)
1917
39.6 mm (1.6 in)
1918
47.0 mm (1.9 in)
1919
59.9 mm (2.4 in)
1920
43.9 mm (1.7 in)
1921
30.7 mm (1.2 in)
1922
38.1 mm (1.5 in)
1923
38.9 mm (1.5 in)
1924
26.4 mm (1.0 in)
1925
33.0 mm (1.3 in)
1926
52.1 mm (2.1 in)
1927
33.0 mm (1.3 in)
1928
30.7 mm (1.2 in)
1929
28.2 mm (1.1 in)
1930
56.9 mm (2.2 in)
1931
77.2 mm (3.0 in)
1932
42.2 mm (1.7 in)
1933
38.4 mm (1.5 in)
1934
39.9 mm (1.6 in)
1935
38.4 mm (1.5 in)
1936
31.5 mm (1.2 in)
1937
35.6 mm (1.4 in)
1938
34.8 mm (1.4 in)
1939
52.1 mm (2.1 in)
1940
35.8 mm (1.4 in)
1941
33.8 mm (1.3 in)
1942
25.9 mm (1.0 in)
1943
38.1 mm (1.5 in)
1944
46.2 mm (1.8 in)
1945
31.5 mm (1.2 in)
1946
48.8 mm (1.9 in)
1947
34.0 mm (1.3 in)
1948
40.4 mm (1.6 in)
1949
46.7 mm (1.8 in)
1950
53.3 mm (2.1 in)
1951
43.2 mm (1.7 in)
1952
25.1 mm (1.0 in)
1953
29.7 mm (1.2 in)
1954
56.4 mm (2.2 in)
1955
40.6 mm (1.6 in)
1956
21.1 mm (0.8 in)
1957
37.3 mm (1.5 in)
1958
40.9 mm (1.6 in)
1959
38.1 mm (1.5 in)
1960
30.5 mm (1.2 in)
1961
33.0 mm (1.3 in)
1962
38.4 mm (1.5 in)
1963
40.4 mm (1.6 in)
1964
40.4 mm (1.6 in)
1965
60.2 mm (2.4 in)
1966
58.4 mm (2.3 in)
1967
73.7 mm (2.9 in)
1968
28.2 mm (1.1 in)
1969
46.2 mm (1.8 in)
1970
26.7 mm (1.1 in)
1971
30.5 mm (1.2 in)
1972
24.9 mm (1.0 in)
1973
40.4 mm (1.6 in)
1974
39.1 mm (1.5 in)
1975
53.8 mm (2.1 in)
1976
36.1 mm (1.4 in)
1977
77.7 mm (3.1 in)
1978
53.3 mm (2.1 in)
1979
44.5 mm (1.8 in)
1980
43.2 mm (1.7 in)
1981
36.8 mm (1.4 in)
1982
34.8 mm (1.4 in)
1983
38.9 mm (1.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Nogales, 1892 to 1983. The record is 210.8 mm (8.3 in) in 1977, marked on the chart; the median year is 60.1 mm (2.4 in).
Wettest five days (Rx5day) at Nogales by year
Year
Wettest five days (Rx5day)
1892
6.4 mm (0.25 in)
1893
2.5 mm (0.10 in)
1894
48.3 mm (1.9 in)
1895
45.5 mm (1.8 in)
1899
31.2 mm (1.2 in)
1900
62.2 mm (2.4 in)
1901
88.6 mm (3.5 in)
1902
49.2 mm (1.9 in)
1903
52.3 mm (2.1 in)
1904
19.3 mm (0.8 in)
1909
77.5 mm (3.1 in)
1910
17.5 mm (0.7 in)
1913
3.0 mm (0.12 in)
1914
91.9 mm (3.6 in)
1915
44.3 mm (1.7 in)
1916
119.9 mm (4.7 in)
1917
61.7 mm (2.4 in)
1918
75.4 mm (3.0 in)
1919
76.4 mm (3.0 in)
1920
50.6 mm (2.0 in)
1921
71.6 mm (2.8 in)
1922
56.4 mm (2.2 in)
1923
59.9 mm (2.4 in)
1924
58.6 mm (2.3 in)
1925
47.0 mm (1.9 in)
1926
67.9 mm (2.7 in)
1927
51.4 mm (2.0 in)
1928
49.5 mm (1.9 in)
1929
62.0 mm (2.4 in)
1930
69.5 mm (2.7 in)
1931
109.9 mm (4.3 in)
1932
65.6 mm (2.6 in)
1933
49.6 mm (2.0 in)
1934
81.3 mm (3.2 in)
1935
57.9 mm (2.3 in)
1936
50.3 mm (2.0 in)
1937
75.5 mm (3.0 in)
1938
52.8 mm (2.1 in)
1939
81.1 mm (3.2 in)
1940
61.0 mm (2.4 in)
1941
61.3 mm (2.4 in)
1942
36.8 mm (1.4 in)
1943
52.3 mm (2.1 in)
1944
81.0 mm (3.2 in)
1945
76.4 mm (3.0 in)
1946
55.4 mm (2.2 in)
1947
37.9 mm (1.5 in)
1948
62.0 mm (2.4 in)
1949
57.9 mm (2.3 in)
1950
79.2 mm (3.1 in)
1951
49.5 mm (1.9 in)
1952
47.5 mm (1.9 in)
1953
62.0 mm (2.4 in)
1954
59.7 mm (2.4 in)
1955
61.6 mm (2.4 in)
1956
59.9 mm (2.4 in)
1957
54.0 mm (2.1 in)
1958
93.7 mm (3.7 in)
1959
60.1 mm (2.4 in)
1960
53.4 mm (2.1 in)
1961
57.4 mm (2.3 in)
1962
60.5 mm (2.4 in)
1963
68.9 mm (2.7 in)
1964
65.8 mm (2.6 in)
1965
97.8 mm (3.9 in)
1966
90.9 mm (3.6 in)
1967
113.1 mm (4.5 in)
1968
45.4 mm (1.8 in)
1969
95.4 mm (3.8 in)
1970
51.6 mm (2.0 in)
1971
84.6 mm (3.3 in)
1972
48.8 mm (1.9 in)
1973
77.3 mm (3.0 in)
1974
55.9 mm (2.2 in)
1975
62.9 mm (2.5 in)
1976
51.1 mm (2.0 in)
1977
210.8 mm (8.3 in)
1978
77.9 mm (3.1 in)
1979
49.0 mm (1.9 in)
1980
73.7 mm (2.9 in)
1981
67.8 mm (2.7 in)
1982
44.2 mm (1.7 in)
1983
72.9 mm (2.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at Nogales, 1892 to 1983. The record is 149 days in 1972, marked on the chart; the median year is 67 days.
Longest dry spell (CDD) at Nogales by year
Year
Longest dry spell (CDD)
1892
13 days
1893
16 days
1894
61 days
1895
92 days
1899
43 days
1900
51 days
1901
43 days
1902
96 days
1903
75 days
1904
54 days
1909
47 days
1910
48 days
1913
12 days
1914
63 days
1915
77 days
1916
84 days
1917
101 days
1918
43 days
1919
43 days
1920
59 days
1921
66 days
1922
53 days
1923
122 days
1924
92 days
1925
111 days
1926
34 days
1927
33 days
1928
73 days
1929
61 days
1930
55 days
1931
39 days
1932
67 days
1933
70 days
1934
70 days
1935
51 days
1936
69 days
1937
70 days
1938
50 days
1939
81 days
1940
46 days
1941
52 days
1942
74 days
1943
96 days
1944
79 days
1945
94 days
1946
67 days
1947
45 days
1948
67 days
1949
48 days
1950
104 days
1951
65 days
1952
45 days
1953
63 days
1954
84 days
1955
113 days
1956
86 days
1957
53 days
1958
71 days
1959
113 days
1960
109 days
1961
82 days
1962
60 days
1963
68 days
1964
82 days
1965
92 days
1966
124 days
1967
55 days
1968
83 days
1969
74 days
1970
86 days
1971
65 days
1972
149 days
1973
80 days
1974
60 days
1975
82 days
1976
41 days
1977
54 days
1978
79 days
1979
50 days
1980
92 days
1981
37 days
1982
65 days
1983
52 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
64 years with a frost
Across 64 years with a frost, the median last spring frost at Nogales falls on 22 April and the median first autumn frost on 31 October, which leaves a median of 191 days between them.
In 1952 to 1982 the median growing season was 170 days. That is 49 days fewer than in 1914 to 1947.
Fitted over all years, the growing season changes by -8.4 days per decade at this station.
Frost dates and growing season at Nogales
Measure
Median, all years
Earliest period (1914 to 1947)
Recent period (1952 to 1982)
Recent against earliest
Fitted trend
Last spring frost
22 April
11 April
4 May
23 days later
+4.7 days per decade
First autumn frost
31 October
9 November
26 October
14 days earlier
-3.6 days per decade
Growing days
191 days
219 days
170 days
49 days fewer
-8.4 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
72 years, 1900 to 1982
A day with at least 38.8 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 89.1 mm (3.5 in) of rain is expected about once in 100 years.
Rainfall return levels at Nogales: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
38.8 mm (1.5 in)
5 years
50.3 mm (2.0 in)
10 years
58.6 mm (2.3 in)
25 years
70.1 mm (2.8 in)
50 years
79.3 mm (3.1 in)
100 years
89.1 mm (3.5 in)
Longer than the 72 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, 72 years of values from 1900 to 1982.
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: 96.8 mm (3.8 in) in 1916; 77.7 mm (3.1 in) in 1977; 77.2 mm (3.0 in) in 1931.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Nogales, at 1964. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1964 ran 0.4 C (0.6 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at Nogales, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1964
+0.4
+0.6
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 Nogales standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Nogales 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 2026-10-12 (12 October 2026). Records are computed by this site and are not official.