Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Coyame (Smn). 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 Coyame (Smn), with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
31.7 C (89.1 F)
-15.0 C (5.0 F)
n/a
n/a
Feb
35.0 C (95.0 F)
-10.0 C (14.0 F)
n/a
n/a
Mar
35.6 C (96.1 F)
-9.4 C (15.1 F)
n/a
n/a
Apr
40.0 C (104.0 F)
-3.3 C (26.1 F)
n/a
n/a
May
41.7 C (107.1 F)
-2.2 C (28.0 F)
n/a
n/a
Jun
47.8 C (118.0 F)
5.0 C (41.0 F)
n/a
n/a
Jul
42.8 C (109.0 F)
10.0 C (50.0 F)
n/a
n/a
Aug
42.8 C (109.0 F)
8.9 C (48.0 F)
n/a
n/a
Sep
40.6 C (105.1 F)
-3.3 C (26.1 F)
n/a
n/a
Oct
38.9 C (102.0 F)
-3.3 C (26.1 F)
n/a
n/a
Nov
38.9 C (102.0 F)
-8.3 C (17.1 F)
n/a
n/a
Dec
30.0 C (86.0 F)
-12.2 C (10.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Coyame (Smn) still stand. 1963 holds the most, with 112.
Standing records at Coyame (Smn) by the year they were set
Year set
Standing records
1961
13
1962
64
1963
112
1964
80
1965
64
1966
37
1967
57
1968
47
1969
61
1970
74
1971
83
1972
53
1973
74
1974
39
1975
46
1976
46
1977
21
1978
20
1979
20
1980
27
1981
14
1982
22
1983
27
1984
23
1985
33
1986
18
1987
22
1988
24
1989
17
1990
14
1991
16
1992
30
1993
14
1994
3
1995
10
1996
49
1997
49
1998
30
2003
11
Wettest Day of Each Month
Aug: 115.8 mm (4.6 in)
The wettest day on record for each calendar month at Coyame (Smn). The most was 115.8 mm (4.6 in) on 4 August 1978.
Record daily precipitation for each month at Coyame (Smn)
Month
Record daily precipitation (mm)
Date
Jan
24.9 mm (1.0 in)
15 January 1986
Feb
46.0 mm (1.8 in)
3 February 1992
Mar
19.8 mm (0.8 in)
19 March 1970
Apr
19.8 mm (0.8 in)
21 April 1979
May
27.9 mm (1.1 in)
29 May 1986
Jun
72.9 mm (2.9 in)
21 June 1977
Jul
74.9 mm (2.9 in)
1 July 1993
Aug
115.8 mm (4.6 in)
4 August 1978
Sep
88.9 mm (3.5 in)
25 September 1978
Oct
46.0 mm (1.8 in)
16 October 1985
Nov
19.8 mm (0.8 in)
4 November 1978
Dec
41.9 mm (1.6 in)
21 December 1986
Period of Record Coverage
1961 to 2003
Complete yearUnder 90 percent of days
39 years of record at Coyame (Smn), 1961 to 2003. 10 years have data for under 90 percent of days and are left out of rankings: 1961, 1970, 1987, 1989, 1994, 1995, 1996, 1997 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 27 complete years at Coyame (Smn), 1962 to 1993. Blue stripes are years cooler than the station's own mean of 18.3 C (64.9 F); red stripes are warmer. The coolest year was 1975, at 16.0 C (60.8 F), and the warmest was 1963, at 21.2 C (70.2 F). The strongest colour marks a difference of 3.0 C (5.4 F).
Annual mean temperature at Coyame (Smn) as warming stripes, 1962 to 1993
Year
Annual mean temperature
Difference from the station mean
1962
20.1 C
+1.80 C
1963
21.2 C
+2.97 C
1964
17.7 C
-0.57 C
1965
19.8 C
+1.50 C
1966
17.7 C
-0.61 C
1968
17.4 C
-0.87 C
1969
19.5 C
+1.23 C
1971
18.5 C
+0.20 C
1972
19.3 C
+1.07 C
1973
19.7 C
+1.44 C
1974
17.9 C
-0.39 C
1975
16.0 C
-2.29 C
1976
16.0 C
-2.29 C
1977
18.1 C
-0.15 C
1978
17.7 C
-0.62 C
1979
17.2 C
-1.05 C
1980
18.2 C
-0.03 C
1981
18.0 C
-0.28 C
1982
18.2 C
-0.05 C
1983
17.8 C
-0.48 C
1984
17.2 C
-1.07 C
1985
17.4 C
-0.84 C
1986
17.3 C
-1.00 C
1990
18.6 C
+0.36 C
1991
18.7 C
+0.38 C
1992
19.1 C
+0.82 C
1993
19.1 C
+0.81 C
This station does not have enough complete years (30 are needed) to fit a temperature trend.
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
1961 to 2003
Yearly extremes at Coyame (Smn): the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
47.8 C (118.0 F)
1983
40.6 C (105.1 F)
39
Coldest night (TNn)
-15.0 C (5.0 F)
1962
-8.3 C (17.1 F)
39
Wettest day (Rx1day)
115.8 mm (4.6 in)
1978
31.0 mm (1.2 in)
39
Wettest five days (Rx5day)
206.6 mm (8.1 in)
1978
57.5 mm (2.3 in)
39
Longest dry spell (CDD)
365 days
1974
74 days
39
Hottest day (TXx)
The hottest day of the year at Coyame (Smn), 1961 to 2003. The record is 47.8 C (118.0 F) in 1983, marked on the chart; the median year is 40.6 C (105.1 F).
Hottest day (TXx) at Coyame (Smn) by year
Year
Hottest day (TXx)
1961
32.2 C (90.0 F)
1962
40.6 C (105.1 F)
1963
41.7 C (107.1 F)
1964
41.7 C (107.1 F)
1965
41.7 C (107.1 F)
1966
37.8 C (100.0 F)
1967
36.7 C (98.1 F)
1968
40.6 C (105.1 F)
1969
40.0 C (104.0 F)
1970
42.8 C (109.0 F)
1971
42.8 C (109.0 F)
1972
38.9 C (102.0 F)
1973
42.8 C (109.0 F)
1974
38.9 C (102.0 F)
1975
40.0 C (104.0 F)
1976
40.0 C (104.0 F)
1977
38.9 C (102.0 F)
1978
41.7 C (107.1 F)
1979
40.6 C (105.1 F)
1980
41.7 C (107.1 F)
1981
40.6 C (105.1 F)
1982
40.0 C (104.0 F)
1983
47.8 C (118.0 F)
1984
37.8 C (100.0 F)
1985
38.9 C (102.0 F)
1986
37.8 C (100.0 F)
1987
40.6 C (105.1 F)
1988
38.9 C (102.0 F)
1989
40.6 C (105.1 F)
1990
40.6 C (105.1 F)
1991
42.8 C (109.0 F)
1992
43.9 C (111.0 F)
1993
40.6 C (105.1 F)
1994
32.8 C (91.0 F)
1995
40.0 C (104.0 F)
1996
42.8 C (109.0 F)
1997
40.6 C (105.1 F)
1998
41.7 C (107.1 F)
2003
40.0 C (104.0 F)
Coldest night (TNn)
The coldest night of the year at Coyame (Smn), 1961 to 2003. The record is -15.0 C (5.0 F) in 1962, marked on the chart; the median year is -8.3 C (17.1 F).
Coldest night (TNn) at Coyame (Smn) by year
Year
Coldest night (TNn)
1961
-12.2 C (10.0 F)
1962
-15.0 C (5.0 F)
1963
-9.4 C (15.1 F)
1964
-9.4 C (15.1 F)
1965
-9.4 C (15.1 F)
1966
-5.0 C (23.0 F)
1967
-6.1 C (21.0 F)
1968
-5.0 C (23.0 F)
1969
-6.1 C (21.0 F)
1970
-3.3 C (26.1 F)
1971
-9.4 C (15.1 F)
1972
-6.1 C (21.0 F)
1973
-7.2 C (19.0 F)
1974
-9.4 C (15.1 F)
1975
-8.3 C (17.1 F)
1976
-9.4 C (15.1 F)
1977
-8.3 C (17.1 F)
1978
-7.2 C (19.0 F)
1979
-7.2 C (19.0 F)
1980
-7.2 C (19.0 F)
1981
-4.4 C (24.1 F)
1982
-6.1 C (21.0 F)
1983
-10.0 C (14.0 F)
1984
-8.3 C (17.1 F)
1985
-10.0 C (14.0 F)
1986
-9.4 C (15.1 F)
1987
-12.2 C (10.0 F)
1988
-11.1 C (12.0 F)
1989
-9.4 C (15.1 F)
1990
-6.1 C (21.0 F)
1991
-5.0 C (23.0 F)
1992
-6.1 C (21.0 F)
1993
-8.3 C (17.1 F)
1994
-7.2 C (19.0 F)
1995
1.7 C (35.1 F)
1996
-8.3 C (17.1 F)
1997
-10.0 C (14.0 F)
1998
-6.1 C (21.0 F)
2003
-3.3 C (26.1 F)
Wettest day (Rx1day)
The wettest day of the year at Coyame (Smn), 1961 to 2003. The record is 115.8 mm (4.6 in) in 1978, marked on the chart; the median year is 31.0 mm (1.2 in).
Wettest day (Rx1day) at Coyame (Smn) by year
Year
Wettest day (Rx1day)
1961
0.0 mm (0.00 in)
1962
11.9 mm (0.5 in)
1963
31.8 mm (1.3 in)
1964
27.9 mm (1.1 in)
1965
22.9 mm (0.9 in)
1966
47.8 mm (1.9 in)
1967
2.3 mm (0.09 in)
1968
3.8 mm (0.15 in)
1969
27.9 mm (1.1 in)
1970
30.0 mm (1.2 in)
1971
39.9 mm (1.6 in)
1972
38.9 mm (1.5 in)
1973
55.9 mm (2.2 in)
1974
0.0 mm (0.00 in)
1975
43.4 mm (1.7 in)
1976
30.0 mm (1.2 in)
1977
72.9 mm (2.9 in)
1978
115.8 mm (4.6 in)
1979
31.0 mm (1.2 in)
1980
31.0 mm (1.2 in)
1981
50.8 mm (2.0 in)
1982
22.9 mm (0.9 in)
1983
23.9 mm (0.9 in)
1984
27.9 mm (1.1 in)
1985
46.0 mm (1.8 in)
1986
67.8 mm (2.7 in)
1987
36.8 mm (1.4 in)
1988
59.9 mm (2.4 in)
1989
7.9 mm (0.31 in)
1990
47.0 mm (1.9 in)
1991
63.8 mm (2.5 in)
1992
46.0 mm (1.8 in)
1993
74.9 mm (2.9 in)
1994
17.8 mm (0.7 in)
1995
39.9 mm (1.6 in)
1996
21.8 mm (0.9 in)
1997
30.0 mm (1.2 in)
1998
19.8 mm (0.8 in)
2003
9.9 mm (0.39 in)
Wettest five days (Rx5day)
The wettest five days of the year at Coyame (Smn), 1961 to 2003. The record is 206.6 mm (8.1 in) in 1978, marked on the chart; the median year is 57.5 mm (2.3 in).
Wettest five days (Rx5day) at Coyame (Smn) by year
Year
Wettest five days (Rx5day)
1961
0.0 mm (0.00 in)
1962
14.7 mm (0.6 in)
1963
55.2 mm (2.2 in)
1964
48.8 mm (1.9 in)
1965
57.5 mm (2.3 in)
1966
69.0 mm (2.7 in)
1967
4.0 mm (0.16 in)
1968
6.2 mm (0.24 in)
1969
44.7 mm (1.8 in)
1970
54.9 mm (2.2 in)
1971
54.6 mm (2.1 in)
1972
61.3 mm (2.4 in)
1973
71.5 mm (2.8 in)
1974
0.0 mm (0.00 in)
1975
74.1 mm (2.9 in)
1976
70.7 mm (2.8 in)
1977
80.0 mm (3.1 in)
1978
206.6 mm (8.1 in)
1979
54.9 mm (2.2 in)
1980
85.9 mm (3.4 in)
1981
85.9 mm (3.4 in)
1982
23.7 mm (0.9 in)
1983
27.2 mm (1.1 in)
1984
77.5 mm (3.1 in)
1985
66.6 mm (2.6 in)
1986
102.4 mm (4.0 in)
1987
59.4 mm (2.3 in)
1988
70.4 mm (2.8 in)
1989
12.2 mm (0.5 in)
1990
89.4 mm (3.5 in)
1991
136.1 mm (5.4 in)
1992
50.6 mm (2.0 in)
1993
92.7 mm (3.6 in)
1994
20.6 mm (0.8 in)
1995
49.8 mm (2.0 in)
1996
68.3 mm (2.7 in)
1997
55.6 mm (2.2 in)
1998
62.2 mm (2.4 in)
2003
14.7 mm (0.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Coyame (Smn), 1961 to 2003. The record is 365 days in 1974, marked on the chart; the median year is 74 days.
Longest dry spell (CDD) at Coyame (Smn) by year
Year
Longest dry spell (CDD)
1961
80 days
1962
184 days
1963
125 days
1964
105 days
1965
185 days
1966
85 days
1967
154 days
1968
99 days
1969
92 days
1970
88 days
1971
168 days
1972
106 days
1973
88 days
1974
365 days
1975
98 days
1976
99 days
1977
105 days
1978
73 days
1979
74 days
1980
140 days
1981
71 days
1982
61 days
1983
58 days
1984
105 days
1985
61 days
1986
37 days
1987
71 days
1988
49 days
1989
38 days
1990
51 days
1991
38 days
1992
30 days
1993
52 days
1994
19 days
1995
29 days
1996
31 days
1997
30 days
1998
70 days
2003
56 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
25 years with a frost
Across 25 years with a frost, the median last spring frost at Coyame (Smn) falls on 20 March and the median first autumn frost on 11 November, which leaves a median of 234 days between them.
Fitted over all years, the growing season changes by -6.0 days per decade at this station.
Frost dates and growing season at Coyame (Smn)
Measure
Median, all years
Earliest period
Recent period (1964 to 1993)
Recent against earliest
Fitted trend
Last spring frost
20 March
n/a
20 March
n/a
-3.0 days per decade
First autumn frost
11 November
n/a
11 November
n/a
-9.0 days per decade
Growing days
234 days
n/a
234 days
n/a
-6.0 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.
Download the Data
Data for Coyame (Smn) standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Coyame (Smn) 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.