Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Cuamantzingo. 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 Cuamantzingo, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
28.9 C (84.0 F)
-12.2 C (10.0 F)
n/a
n/a
Feb
30.6 C (87.1 F)
-9.4 C (15.1 F)
n/a
n/a
Mar
33.9 C (93.0 F)
-6.7 C (19.9 F)
n/a
n/a
Apr
36.7 C (98.1 F)
-5.0 C (23.0 F)
n/a
n/a
May
36.7 C (98.1 F)
-3.3 C (26.1 F)
n/a
n/a
Jun
36.7 C (98.1 F)
0.0 C (32.0 F)
n/a
n/a
Jul
31.7 C (89.1 F)
0.0 C (32.0 F)
n/a
n/a
Aug
30.0 C (86.0 F)
0.0 C (32.0 F)
n/a
n/a
Sep
28.9 C (84.0 F)
0.0 C (32.0 F)
n/a
n/a
Oct
30.6 C (87.1 F)
-6.1 C (21.0 F)
n/a
n/a
Nov
30.0 C (86.0 F)
-7.2 C (19.0 F)
n/a
n/a
Dec
27.8 C (82.0 F)
-9.4 C (15.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Cuamantzingo still stand. 1998 holds the most, with 134.
Standing records at Cuamantzingo by the year they were set
Year set
Standing records
1969
61
1970
41
1971
48
1972
85
1973
94
1974
39
1975
38
1976
45
1977
34
1978
26
1979
38
1980
28
1981
28
1982
55
1983
50
1984
24
1985
22
1986
56
1987
45
1988
40
1989
7
1990
44
1996
26
1997
23
1998
134
1999
56
2000
54
2001
27
2002
67
2003
29
2005
7
2006
13
2007
9
2008
14
2009
31
2010
26
Wettest Day of Each Month
Sep: 64.8 mm (2.6 in)
The wettest day on record for each calendar month at Cuamantzingo. The most was 64.8 mm (2.6 in) on 8 September 2002.
Record daily precipitation for each month at Cuamantzingo
Month
Record daily precipitation (mm)
Date
Jan
15.7 mm (0.6 in)
13 January 2002
Feb
19.8 mm (0.8 in)
20 February 1990
Mar
32.3 mm (1.3 in)
4 March 1988
Apr
61.5 mm (2.4 in)
27 April 1982
May
45.0 mm (1.8 in)
13 May 1980
Jun
54.9 mm (2.2 in)
9 June 2001
Jul
62.0 mm (2.4 in)
31 July 1989
Aug
56.9 mm (2.2 in)
3 August 1971
Sep
64.8 mm (2.6 in)
8 September 2002
Oct
47.8 mm (1.9 in)
2 October 1999
Nov
23.9 mm (0.9 in)
7 November 1978
Dec
21.3 mm (0.8 in)
1 December 1984
Period of Record Coverage
1969 to 2010
Complete yearUnder 90 percent of days
36 years of record at Cuamantzingo, 1969 to 2010. 4 years have data for under 90 percent of days and are left out of rankings: 1989, 2005, 2006, 2010.
Cooler than the station meanWarmer than the station mean
One stripe for each of 27 complete years at Cuamantzingo, 1969 to 2009. Blue stripes are years cooler than the station's own mean of 13.6 C (56.5 F); red stripes are warmer. The coolest year was 1975, at 12.5 C (54.4 F), and the warmest was 1998, at 15.8 C (60.4 F). The strongest colour marks a difference of 2.2 C (4.0 F).
Annual mean temperature at Cuamantzingo as warming stripes, 1969 to 2009
Year
Annual mean temperature
Difference from the station mean
1969
13.6 C
-0.06 C
1970
13.4 C
-0.24 C
1973
13.7 C
+0.04 C
1974
12.6 C
-1.02 C
1975
12.5 C
-1.16 C
1976
12.5 C
-1.14 C
1977
12.8 C
-0.87 C
1978
12.9 C
-0.77 C
1979
13.0 C
-0.58 C
1980
13.3 C
-0.35 C
1981
13.1 C
-0.56 C
1982
13.2 C
-0.40 C
1983
13.0 C
-0.58 C
1984
13.2 C
-0.40 C
1985
13.2 C
-0.40 C
1986
12.8 C
-0.79 C
1987
13.0 C
-0.58 C
1990
14.6 C
+0.95 C
1998
15.8 C
+2.14 C
1999
14.6 C
+1.00 C
2000
14.6 C
+0.99 C
2001
14.7 C
+1.05 C
2002
15.5 C
+1.84 C
2003
15.0 C
+1.39 C
2007
13.8 C
+0.14 C
2008
13.5 C
-0.13 C
2009
14.0 C
+0.41 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
1969 to 2010
Yearly extremes at Cuamantzingo: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
36.7 C (98.1 F)
1998
30.0 C (86.0 F)
36
Coldest night (TNn)
-12.2 C (10.0 F)
1988
-5.0 C (23.0 F)
36
Wettest day (Rx1day)
64.8 mm (2.6 in)
2002
37.8 mm (1.5 in)
36
Wettest five days (Rx5day)
181.2 mm (7.1 in)
2002
71.1 mm (2.8 in)
36
Longest dry spell (CDD)
143 days
1999
58 days
36
Hottest day (TXx)
The hottest day of the year at Cuamantzingo, 1969 to 2010. The record is 36.7 C (98.1 F) in 1998, marked on the chart; the median year is 30.0 C (86.0 F).
Hottest day (TXx) at Cuamantzingo by year
Year
Hottest day (TXx)
1969
30.6 C (87.1 F)
1970
31.7 C (89.1 F)
1971
30.6 C (87.1 F)
1972
28.9 C (84.0 F)
1973
30.0 C (86.0 F)
1974
27.8 C (82.0 F)
1975
29.4 C (84.9 F)
1976
30.0 C (86.0 F)
1977
30.0 C (86.0 F)
1978
30.0 C (86.0 F)
1979
30.6 C (87.1 F)
1980
30.0 C (86.0 F)
1981
28.9 C (84.0 F)
1982
30.0 C (86.0 F)
1983
32.8 C (91.0 F)
1984
31.7 C (89.1 F)
1985
30.6 C (87.1 F)
1986
30.0 C (86.0 F)
1987
28.9 C (84.0 F)
1988
30.6 C (87.1 F)
1989
28.9 C (84.0 F)
1990
28.9 C (84.0 F)
1996
30.0 C (86.0 F)
1997
30.0 C (86.0 F)
1998
36.7 C (98.1 F)
1999
35.0 C (95.0 F)
2000
33.9 C (93.0 F)
2001
33.9 C (93.0 F)
2002
35.6 C (96.1 F)
2003
36.7 C (98.1 F)
2005
30.0 C (86.0 F)
2006
28.9 C (84.0 F)
2007
28.9 C (84.0 F)
2008
30.0 C (86.0 F)
2009
30.0 C (86.0 F)
2010
31.7 C (89.1 F)
Coldest night (TNn)
The coldest night of the year at Cuamantzingo, 1969 to 2010. The record is -12.2 C (10.0 F) in 1988, marked on the chart; the median year is -5.0 C (23.0 F).
Coldest night (TNn) at Cuamantzingo by year
Year
Coldest night (TNn)
1969
-5.0 C (23.0 F)
1970
-8.3 C (17.1 F)
1971
-5.0 C (23.0 F)
1972
-8.3 C (17.1 F)
1973
-8.9 C (16.0 F)
1974
-5.0 C (23.0 F)
1975
-8.3 C (17.1 F)
1976
-9.4 C (15.1 F)
1977
-3.3 C (26.1 F)
1978
-6.1 C (21.0 F)
1979
-5.0 C (23.0 F)
1980
-7.2 C (19.0 F)
1981
-6.7 C (19.9 F)
1982
-9.4 C (15.1 F)
1983
-6.7 C (19.9 F)
1984
-7.2 C (19.0 F)
1985
-3.3 C (26.1 F)
1986
-11.1 C (12.0 F)
1987
-9.4 C (15.1 F)
1988
-12.2 C (10.0 F)
1989
0.0 C (32.0 F)
1990
0.0 C (32.0 F)
1996
-2.2 C (28.0 F)
1997
0.0 C (32.0 F)
1998
-6.1 C (21.0 F)
1999
-5.0 C (23.0 F)
2000
-7.2 C (19.0 F)
2001
-4.4 C (24.1 F)
2002
-4.4 C (24.1 F)
2003
-6.1 C (21.0 F)
2005
-2.2 C (28.0 F)
2006
-5.0 C (23.0 F)
2007
-3.3 C (26.1 F)
2008
-5.0 C (23.0 F)
2009
-4.4 C (24.1 F)
2010
-3.3 C (26.1 F)
Wettest day (Rx1day)
The wettest day of the year at Cuamantzingo, 1969 to 2010. The record is 64.8 mm (2.6 in) in 2002, marked on the chart; the median year is 37.8 mm (1.5 in).
Wettest day (Rx1day) at Cuamantzingo by year
Year
Wettest day (Rx1day)
1969
40.9 mm (1.6 in)
1970
31.0 mm (1.2 in)
1971
56.9 mm (2.2 in)
1972
19.8 mm (0.8 in)
1973
38.9 mm (1.5 in)
1974
45.0 mm (1.8 in)
1975
33.8 mm (1.3 in)
1976
37.8 mm (1.5 in)
1977
31.8 mm (1.3 in)
1978
49.8 mm (2.0 in)
1979
39.1 mm (1.5 in)
1980
45.0 mm (1.8 in)
1981
35.8 mm (1.4 in)
1982
61.5 mm (2.4 in)
1983
34.8 mm (1.4 in)
1984
38.9 mm (1.5 in)
1985
24.9 mm (1.0 in)
1986
30.5 mm (1.2 in)
1987
47.8 mm (1.9 in)
1988
39.9 mm (1.6 in)
1989
62.0 mm (2.4 in)
1990
37.8 mm (1.5 in)
1996
23.9 mm (0.9 in)
1997
24.9 mm (1.0 in)
1998
27.9 mm (1.1 in)
1999
47.8 mm (1.9 in)
2000
39.9 mm (1.6 in)
2001
54.9 mm (2.2 in)
2002
64.8 mm (2.6 in)
2003
31.0 mm (1.2 in)
2005
27.9 mm (1.1 in)
2006
40.9 mm (1.6 in)
2007
30.0 mm (1.2 in)
2008
36.8 mm (1.4 in)
2009
36.8 mm (1.4 in)
2010
19.8 mm (0.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Cuamantzingo, 1969 to 2010. The record is 181.2 mm (7.1 in) in 2002, marked on the chart; the median year is 71.1 mm (2.8 in).
Wettest five days (Rx5day) at Cuamantzingo by year
Year
Wettest five days (Rx5day)
1969
74.5 mm (2.9 in)
1970
74.2 mm (2.9 in)
1971
81.0 mm (3.2 in)
1972
47.8 mm (1.9 in)
1973
99.5 mm (3.9 in)
1974
81.1 mm (3.2 in)
1975
69.9 mm (2.8 in)
1976
66.0 mm (2.6 in)
1977
42.6 mm (1.7 in)
1978
101.6 mm (4.0 in)
1979
62.5 mm (2.5 in)
1980
75.8 mm (3.0 in)
1981
62.8 mm (2.5 in)
1982
77.8 mm (3.1 in)
1983
62.6 mm (2.5 in)
1984
101.2 mm (4.0 in)
1985
56.6 mm (2.2 in)
1986
41.0 mm (1.6 in)
1987
72.2 mm (2.8 in)
1988
69.4 mm (2.7 in)
1989
91.2 mm (3.6 in)
1990
60.3 mm (2.4 in)
1996
53.3 mm (2.1 in)
1997
45.5 mm (1.8 in)
1998
56.9 mm (2.2 in)
1999
114.4 mm (4.5 in)
2000
76.5 mm (3.0 in)
2001
107.2 mm (4.2 in)
2002
181.2 mm (7.1 in)
2003
62.9 mm (2.5 in)
2005
51.0 mm (2.0 in)
2006
76.0 mm (3.0 in)
2007
33.0 mm (1.3 in)
2008
115.3 mm (4.5 in)
2009
87.1 mm (3.4 in)
2010
48.0 mm (1.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at Cuamantzingo, 1969 to 2010. The record is 143 days in 1999, marked on the chart; the median year is 58 days.
Longest dry spell (CDD) at Cuamantzingo by year
Year
Longest dry spell (CDD)
1969
60 days
1970
58 days
1971
45 days
1972
37 days
1973
57 days
1974
26 days
1975
65 days
1976
56 days
1977
39 days
1978
43 days
1979
34 days
1980
70 days
1981
33 days
1982
80 days
1983
58 days
1984
30 days
1985
55 days
1986
105 days
1987
70 days
1988
65 days
1989
24 days
1990
40 days
1996
75 days
1997
40 days
1998
94 days
1999
143 days
2000
121 days
2001
72 days
2002
75 days
2003
69 days
2005
74 days
2006
42 days
2007
33 days
2008
77 days
2009
36 days
2010
49 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
27 years with a frost
Across 27 years with a frost, the median last spring frost at Cuamantzingo falls on 9 April and the median first autumn frost on 26 October, which leaves a median of 196 days between them.
Fitted over all years, the growing season changes by +7.0 days per decade at this station.
Frost dates and growing season at Cuamantzingo
Measure
Median, all years
Earliest period
Recent period (1969 to 2009)
Recent against earliest
Fitted trend
Last spring frost
9 April
n/a
9 April
n/a
-1.8 days per decade
First autumn frost
26 October
n/a
26 October
n/a
+5.3 days per decade
Growing days
196 days
n/a
196 days
n/a
+7.0 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.
Rainfall Return Levels
32 years, 1969 to 2009
A day with at least 37.3 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 71.1 mm (2.8 in) of rain is expected about once in 100 years.
Rainfall return levels at Cuamantzingo: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
37.3 mm (1.5 in)
5 years
47.2 mm (1.9 in)
10 years
53.4 mm (2.1 in)
25 years
60.8 mm (2.4 in)
50 years
66.1 mm (2.6 in)
Longer than the 32 years of record
100 years
71.1 mm (2.8 in)
Longer than the 32 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, 32 years of values from 1969 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: 64.8 mm (2.6 in) in 2002; 61.5 mm (2.4 in) in 1982; 56.9 mm (2.2 in) in 1971.
Download the Data
Data for Cuamantzingo standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Cuamantzingo 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.