Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Jalcomulco (Cfe). 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 Jalcomulco (Cfe), with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
38.3 C (100.9 F)
3.9 C (39.0 F)
n/a
n/a
Feb
39.4 C (102.9 F)
5.6 C (42.1 F)
n/a
n/a
Mar
43.9 C (111.0 F)
3.9 C (39.0 F)
n/a
n/a
Apr
45.0 C (113.0 F)
10.0 C (50.0 F)
n/a
n/a
May
45.0 C (113.0 F)
12.8 C (55.0 F)
n/a
n/a
Jun
43.9 C (111.0 F)
16.7 C (62.1 F)
n/a
n/a
Jul
38.9 C (102.0 F)
11.7 C (53.1 F)
n/a
n/a
Aug
38.9 C (102.0 F)
11.7 C (53.1 F)
n/a
n/a
Sep
40.0 C (104.0 F)
12.8 C (55.0 F)
n/a
n/a
Oct
37.8 C (100.0 F)
9.4 C (48.9 F)
n/a
n/a
Nov
37.8 C (100.0 F)
5.0 C (41.0 F)
n/a
n/a
Dec
36.7 C (98.1 F)
3.9 C (39.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Jalcomulco (Cfe) still stand. 1990 holds the most, with 107.
Standing records at Jalcomulco (Cfe) by the year they were set
Year set
Standing records
1961
36
1962
46
1963
27
1964
34
1965
20
1966
45
1967
23
1968
12
1969
30
1970
34
1971
6
1972
31
1973
42
1974
43
1975
29
1976
22
1977
39
1978
20
1979
38
1980
25
1981
19
1982
25
1983
31
1984
32
1985
13
1986
13
1987
27
1988
17
1989
43
1990
107
1991
48
1992
16
1993
16
1994
24
1995
51
1996
27
1997
28
1998
39
1999
9
2000
12
2001
24
2002
46
2003
20
2004
31
2005
12
2006
13
2007
11
2008
90
2009
15
2010
3
All-Time Record Progression
3 new records
3 all-time records were set at Jalcomulco (Cfe) between 19 May 1995 and 12 July 1999. Each dot is a new record.
When Jalcomulco (Cfe) set new all-time records
Date
Kind
Detail
1995-05-19
Record high minimum temperature
Record high minimum temperature 25.6 C (78.1 F)
1998-04-16
Record high maximum temperature
Record high maximum temperature 45.0 C (113.0 F)
1999-07-12
Record daily precipitation
Record daily precipitation 164.3 mm (6.5 in)
Wettest Day of Each Month
Jul: 164.3 mm (6.5 in)
The wettest day on record for each calendar month at Jalcomulco (Cfe). The most was 164.3 mm (6.5 in) on 12 July 1999.
Record daily precipitation for each month at Jalcomulco (Cfe)
Month
Record daily precipitation (mm)
Date
Jan
114.8 mm (4.5 in)
22 January 1994
Feb
42.2 mm (1.7 in)
10 February 2007
Mar
74.4 mm (2.9 in)
26 March 1965
Apr
74.4 mm (2.9 in)
3 April 1990
May
121.9 mm (4.8 in)
19 May 1980
Jun
143.8 mm (5.7 in)
26 June 1976
Jul
164.3 mm (6.5 in)
12 July 1999
Aug
152.4 mm (6.0 in)
7 August 1978
Sep
162.8 mm (6.4 in)
20 September 1974
Oct
128.0 mm (5.0 in)
18 October 1998
Nov
51.6 mm (2.0 in)
23 November 1962
Dec
44.5 mm (1.8 in)
8 December 1965
Period of Record Coverage
1961 to 2010
Complete yearUnder 90 percent of days
50 years of record at Jalcomulco (Cfe), 1961 to 2010. 3 years have data for under 90 percent of days and are left out of rankings: 1971, 2005, 2010.
Cooler than the station meanWarmer than the station mean
One stripe for each of 44 complete years at Jalcomulco (Cfe), 1961 to 2009. Blue stripes are years cooler than the station's own mean of 24.4 C (75.9 F); red stripes are warmer. The coolest year was 1966, at 23.4 C (74.2 F), and the warmest was 1995, at 25.4 C (77.8 F). The strongest colour marks a difference of 1.1 C (2.0 F).
Annual mean temperature at Jalcomulco (Cfe) as warming stripes, 1961 to 2009
Year
Annual mean temperature
Difference from the station mean
1961
23.8 C
-0.55 C
1962
24.5 C
+0.13 C
1963
24.2 C
-0.18 C
1964
24.1 C
-0.30 C
1965
23.9 C
-0.45 C
1966
23.4 C
-0.94 C
1967
24.0 C
-0.36 C
1968
24.0 C
-0.43 C
1969
24.3 C
-0.13 C
1970
24.0 C
-0.43 C
1972
24.9 C
+0.48 C
1973
24.5 C
+0.08 C
1974
24.5 C
+0.07 C
1975
24.6 C
+0.25 C
1977
24.4 C
-0.03 C
1978
24.3 C
-0.08 C
1979
24.0 C
-0.38 C
1980
24.1 C
-0.26 C
1981
24.0 C
-0.37 C
1982
25.0 C
+0.62 C
1983
24.3 C
-0.10 C
1984
23.8 C
-0.63 C
1985
24.4 C
-0.01 C
1986
24.0 C
-0.39 C
1987
23.8 C
-0.58 C
1988
24.2 C
-0.16 C
1989
24.2 C
-0.15 C
1991
23.8 C
-0.62 C
1992
24.3 C
-0.09 C
1993
24.9 C
+0.51 C
1994
25.1 C
+0.75 C
1995
25.4 C
+1.06 C
1996
24.2 C
-0.14 C
1997
24.3 C
-0.04 C
1998
25.1 C
+0.70 C
1999
24.4 C
+0.03 C
2000
24.3 C
-0.06 C
2001
24.8 C
+0.44 C
2002
25.2 C
+0.84 C
2003
25.1 C
+0.74 C
2004
24.8 C
+0.41 C
2006
24.9 C
+0.52 C
2007
24.4 C
+0.01 C
2009
24.7 C
+0.27 C
The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1961 to 2009. In Fahrenheit: 0.3 F (0.2 to 0.5) per decade. The slope is a straight line fitted to 44 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Jalcomulco (Cfe)
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.2 C (0.1 to 0.3) per decade
0.3 F (0.2 to 0.5) per decade
1961 to 2009
44
Rise
Mean daily maximum
0.4 C (0.2 to 0.6) per decade
0.7 F (0.4 to 1.0) per decade
1961 to 2009
44
Rise
Mean daily minimum
-0.07 C (-0.16 to 0.02) per decade
-0.12 F (-0.29 to 0.04) per decade
1961 to 2009
44
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
1961 to 2010
Yearly extremes at Jalcomulco (Cfe): the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
45.0 C (113.0 F)
1998
40.6 C (105.1 F)
50
Coldest night (TNn)
3.9 C (39.0 F)
1973
8.3 C (46.9 F)
50
Wettest day (Rx1day)
164.3 mm (6.5 in)
1999
91.0 mm (3.6 in)
50
Wettest five days (Rx5day)
350.0 mm (13.8 in)
1974
167.5 mm (6.6 in)
50
Longest dry spell (CDD)
81 days
1970
38 days
50
Hottest day (TXx)
The hottest day of the year at Jalcomulco (Cfe), 1961 to 2010. The record is 45.0 C (113.0 F) in 1998, marked on the chart; the median year is 40.6 C (105.1 F).
Hottest day (TXx) at Jalcomulco (Cfe) by year
Year
Hottest day (TXx)
1961
41.1 C (106.0 F)
1962
40.0 C (104.0 F)
1963
39.4 C (102.9 F)
1964
40.0 C (104.0 F)
1965
37.8 C (100.0 F)
1966
37.2 C (99.0 F)
1967
40.6 C (105.1 F)
1968
40.0 C (104.0 F)
1969
41.7 C (107.1 F)
1970
40.0 C (104.0 F)
1971
36.7 C (98.1 F)
1972
41.1 C (106.0 F)
1973
42.8 C (109.0 F)
1974
43.3 C (109.9 F)
1975
41.7 C (107.1 F)
1976
40.6 C (105.1 F)
1977
41.7 C (107.1 F)
1978
41.1 C (106.0 F)
1979
40.6 C (105.1 F)
1980
41.7 C (107.1 F)
1981
40.6 C (105.1 F)
1982
42.8 C (109.0 F)
1983
43.9 C (111.0 F)
1984
43.9 C (111.0 F)
1985
40.0 C (104.0 F)
1986
40.0 C (104.0 F)
1987
38.9 C (102.0 F)
1988
40.6 C (105.1 F)
1989
41.7 C (107.1 F)
1990
38.9 C (102.0 F)
1991
41.7 C (107.1 F)
1992
38.3 C (100.9 F)
1993
41.1 C (106.0 F)
1994
40.6 C (105.1 F)
1995
41.7 C (107.1 F)
1996
40.0 C (104.0 F)
1997
40.0 C (104.0 F)
1998
45.0 C (113.0 F)
1999
42.8 C (109.0 F)
2000
42.2 C (108.0 F)
2001
40.0 C (104.0 F)
2002
41.7 C (107.1 F)
2003
45.0 C (113.0 F)
2004
42.2 C (108.0 F)
2005
41.1 C (106.0 F)
2006
42.8 C (109.0 F)
2007
40.0 C (104.0 F)
2008
40.0 C (104.0 F)
2009
40.0 C (104.0 F)
2010
38.9 C (102.0 F)
Coldest night (TNn)
The coldest night of the year at Jalcomulco (Cfe), 1961 to 2010. The record is 3.9 C (39.0 F) in 1973, marked on the chart; the median year is 8.3 C (46.9 F).
Coldest night (TNn) at Jalcomulco (Cfe) by year
Year
Coldest night (TNn)
1961
8.3 C (46.9 F)
1962
8.3 C (46.9 F)
1963
6.7 C (44.1 F)
1964
10.0 C (50.0 F)
1965
10.0 C (50.0 F)
1966
8.9 C (48.0 F)
1967
8.3 C (46.9 F)
1968
8.9 C (48.0 F)
1969
10.0 C (50.0 F)
1970
5.0 C (41.0 F)
1971
12.2 C (54.0 F)
1972
8.9 C (48.0 F)
1973
3.9 C (39.0 F)
1974
7.8 C (46.0 F)
1975
8.3 C (46.9 F)
1976
5.6 C (42.1 F)
1977
5.6 C (42.1 F)
1978
10.0 C (50.0 F)
1979
8.9 C (48.0 F)
1980
8.9 C (48.0 F)
1981
9.4 C (48.9 F)
1982
7.8 C (46.0 F)
1983
7.8 C (46.0 F)
1984
10.0 C (50.0 F)
1985
7.8 C (46.0 F)
1986
5.6 C (42.1 F)
1987
7.8 C (46.0 F)
1988
6.7 C (44.1 F)
1989
5.0 C (41.0 F)
1990
3.9 C (39.0 F)
1991
3.9 C (39.0 F)
1992
9.4 C (48.9 F)
1993
7.8 C (46.0 F)
1994
8.9 C (48.0 F)
1995
10.0 C (50.0 F)
1996
5.0 C (41.0 F)
1997
5.6 C (42.1 F)
1998
7.2 C (45.0 F)
1999
10.0 C (50.0 F)
2000
8.9 C (48.0 F)
2001
10.0 C (50.0 F)
2002
7.8 C (46.0 F)
2003
7.2 C (45.0 F)
2004
10.0 C (50.0 F)
2005
7.8 C (46.0 F)
2006
6.1 C (43.0 F)
2007
10.0 C (50.0 F)
2008
10.0 C (50.0 F)
2009
9.4 C (48.9 F)
2010
10.6 C (51.1 F)
Wettest day (Rx1day)
The wettest day of the year at Jalcomulco (Cfe), 1961 to 2010. The record is 164.3 mm (6.5 in) in 1999, marked on the chart; the median year is 91.0 mm (3.6 in).
Wettest day (Rx1day) at Jalcomulco (Cfe) by year
Year
Wettest day (Rx1day)
1961
147.8 mm (5.8 in)
1962
62.5 mm (2.5 in)
1963
77.0 mm (3.0 in)
1964
80.8 mm (3.2 in)
1965
79.8 mm (3.1 in)
1966
97.3 mm (3.8 in)
1967
81.3 mm (3.2 in)
1968
93.5 mm (3.7 in)
1969
109.5 mm (4.3 in)
1970
121.4 mm (4.8 in)
1971
63.0 mm (2.5 in)
1972
99.8 mm (3.9 in)
1973
54.9 mm (2.2 in)
1974
162.8 mm (6.4 in)
1975
66.8 mm (2.6 in)
1976
143.8 mm (5.7 in)
1977
65.3 mm (2.6 in)
1978
152.4 mm (6.0 in)
1979
118.4 mm (4.7 in)
1980
146.3 mm (5.8 in)
1981
142.0 mm (5.6 in)
1982
71.1 mm (2.8 in)
1983
79.8 mm (3.1 in)
1984
141.5 mm (5.6 in)
1985
63.8 mm (2.5 in)
1986
87.4 mm (3.4 in)
1987
93.0 mm (3.7 in)
1988
58.4 mm (2.3 in)
1989
95.0 mm (3.7 in)
1990
74.4 mm (2.9 in)
1991
51.6 mm (2.0 in)
1992
88.4 mm (3.5 in)
1993
96.0 mm (3.8 in)
1994
114.8 mm (4.5 in)
1995
115.8 mm (4.6 in)
1996
116.3 mm (4.6 in)
1997
71.6 mm (2.8 in)
1998
128.0 mm (5.0 in)
1999
164.3 mm (6.5 in)
2000
88.9 mm (3.5 in)
2001
68.3 mm (2.7 in)
2002
126.5 mm (5.0 in)
2003
105.7 mm (4.2 in)
2004
120.1 mm (4.7 in)
2005
86.9 mm (3.4 in)
2006
79.2 mm (3.1 in)
2007
52.1 mm (2.1 in)
2008
130.3 mm (5.1 in)
2009
75.4 mm (3.0 in)
2010
2.3 mm (0.09 in)
Wettest five days (Rx5day)
The wettest five days of the year at Jalcomulco (Cfe), 1961 to 2010. The record is 350.0 mm (13.8 in) in 1974, marked on the chart; the median year is 167.5 mm (6.6 in).
Wettest five days (Rx5day) at Jalcomulco (Cfe) by year
Year
Wettest five days (Rx5day)
1961
292.6 mm (11.5 in)
1962
144.1 mm (5.7 in)
1963
133.9 mm (5.3 in)
1964
106.7 mm (4.2 in)
1965
164.6 mm (6.5 in)
1966
201.4 mm (7.9 in)
1967
153.4 mm (6.0 in)
1968
224.8 mm (8.9 in)
1969
273.6 mm (10.8 in)
1970
258.1 mm (10.2 in)
1971
161.4 mm (6.4 in)
1972
170.4 mm (6.7 in)
1973
158.8 mm (6.3 in)
1974
350.0 mm (13.8 in)
1975
255.6 mm (10.1 in)
1976
307.1 mm (12.1 in)
1977
157.8 mm (6.2 in)
1978
181.7 mm (7.2 in)
1979
140.0 mm (5.5 in)
1980
157.8 mm (6.2 in)
1981
186.0 mm (7.3 in)
1982
95.8 mm (3.8 in)
1983
209.3 mm (8.2 in)
1984
225.9 mm (8.9 in)
1985
122.7 mm (4.8 in)
1986
108.0 mm (4.3 in)
1987
106.0 mm (4.2 in)
1988
122.9 mm (4.8 in)
1989
109.2 mm (4.3 in)
1990
105.7 mm (4.2 in)
1991
124.7 mm (4.9 in)
1992
129.8 mm (5.1 in)
1993
235.3 mm (9.3 in)
1994
162.9 mm (6.4 in)
1995
174.2 mm (6.9 in)
1996
205.8 mm (8.1 in)
1997
149.4 mm (5.9 in)
1998
197.1 mm (7.8 in)
1999
181.6 mm (7.1 in)
2000
181.1 mm (7.1 in)
2001
114.6 mm (4.5 in)
2002
181.1 mm (7.1 in)
2003
126.0 mm (5.0 in)
2004
211.6 mm (8.3 in)
2005
184.9 mm (7.3 in)
2006
176.0 mm (6.9 in)
2007
101.9 mm (4.0 in)
2008
313.7 mm (12.4 in)
2009
194.0 mm (7.6 in)
2010
3.1 mm (0.12 in)
Longest dry spell (CDD)
The longest dry spell of the year at Jalcomulco (Cfe), 1961 to 2010. The record is 81 days in 1970, marked on the chart; the median year is 38 days.
Longest dry spell (CDD) at Jalcomulco (Cfe) by year
Year
Longest dry spell (CDD)
1961
70 days
1962
79 days
1963
38 days
1964
41 days
1965
21 days
1966
40 days
1967
24 days
1968
23 days
1969
24 days
1970
81 days
1971
22 days
1972
39 days
1973
24 days
1974
37 days
1975
43 days
1976
55 days
1977
36 days
1978
20 days
1979
68 days
1980
40 days
1981
39 days
1982
56 days
1983
39 days
1984
47 days
1985
41 days
1986
48 days
1987
26 days
1988
41 days
1989
33 days
1990
39 days
1991
28 days
1992
18 days
1993
25 days
1994
35 days
1995
31 days
1996
34 days
1997
19 days
1998
61 days
1999
71 days
2000
37 days
2001
74 days
2002
34 days
2003
34 days
2004
31 days
2005
23 days
2006
35 days
2007
28 days
2008
64 days
2009
54 days
2010
47 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.
Rainfall Return Levels
47 years, 1961 to 2009
A day with at least 95.3 mm (3.8 in) of rain is expected about once in 2 years. A day with at least 191.8 mm (7.6 in) of rain is expected about once in 100 years.
Rainfall return levels at Jalcomulco (Cfe): the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
95.3 mm (3.8 in)
5 years
124.7 mm (4.9 in)
10 years
142.6 mm (5.6 in)
25 years
163.7 mm (6.4 in)
50 years
178.2 mm (7.0 in)
Longer than the 47 years of record
100 years
191.8 mm (7.6 in)
Longer than the 47 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, 47 years of values from 1961 to 2009.
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: 164.3 mm (6.5 in) in 1999; 162.8 mm (6.4 in) in 1974; 152.4 mm (6.0 in) in 1978.
Station Changes
2 suspected
2 changes were suspected in the annual mean temperature of Jalcomulco (Cfe), at 1967 and 1991. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1967 ran 0.4 C (0.6 F) higher than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1991 ran 0.5 C (0.9 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Jalcomulco (Cfe), against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1967
+0.4
+0.6
likely
5
1991
-0.5
-0.9
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 Jalcomulco (Cfe) standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Jalcomulco (Cfe) 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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.