San Juan Cacahuatepec (Cfe) Weather Records (MXN00020010)

Record envelope, standing records and threshold days for San Juan Cacahuatepec (Cfe) (MXN00020010), Mexico, with 38 years of record.

Key Facts for San Juan Cacahuatepec (Cfe)

San Juan Cacahuatepec (Cfe) (MXN00020010) is a weather station in Mexico at 16.60 latitude and -98.13 longitude, 413 m (1,354 ft) above sea level.
The station reports from 1963 to 2000, 38 years of record.
1,464 records set at San Juan Cacahuatepec (Cfe) still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
San Juan Cacahuatepec (Cfe) set a daily record high maximum temperature of 40.0 C (104.0 F) on 18 December 2000.

About the Station

Location: Mexico, 16.60 latitude, -98.13 longitude.
Elevation: 413 m (1,354 ft).
Period of record: 1963 to 2000, 38 years.
Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at San Juan Cacahuatepec (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 San Juan Cacahuatepec (Cfe), with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	41.1 C (106.0 F)	11.7 C (53.1 F)	n/a	n/a
Feb	42.8 C (109.0 F)	10.6 C (51.1 F)	n/a	n/a
Mar	42.2 C (108.0 F)	10.6 C (51.1 F)	n/a	n/a
Apr	42.2 C (108.0 F)	12.8 C (55.0 F)	n/a	n/a
May	41.1 C (106.0 F)	15.0 C (59.0 F)	n/a	n/a
Jun	41.7 C (107.1 F)	13.3 C (55.9 F)	n/a	n/a
Jul	39.4 C (102.9 F)	13.3 C (55.9 F)	n/a	n/a
Aug	37.8 C (100.0 F)	12.8 C (55.0 F)	n/a	n/a
Sep	37.8 C (100.0 F)	15.0 C (59.0 F)	n/a	n/a
Oct	40.0 C (104.0 F)	11.7 C (53.1 F)	n/a	n/a
Nov	40.0 C (104.0 F)	12.8 C (55.0 F)	n/a	n/a
Dec	42.2 C (108.0 F)	11.1 C (52.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at San Juan Cacahuatepec (Cfe) still stand. 1963 holds the most, with 139.

Standing records at San Juan Cacahuatepec (Cfe) by the year they were set
Year set	Standing records
1963	139
1964	83
1965	32
1966	116
1967	94
1968	52
1969	34
1970	41
1971	67
1972	54
1973	87
1974	54
1975	39
1976	12
1978	12
1979	23
1980	16
1981	12
1982	40
1983	36
1984	6
1985	6
1986	82
1987	59
1988	24
1989	12
1990	17
1991	32
1992	23
1993	44
1994	37
1995	17
1996	7
1997	11
1998	5
1999	9
2000	30

Wettest Day of Each Month

Jun: 340.4 mm (13.4 in)

The wettest day on record for each calendar month at San Juan Cacahuatepec (Cfe). The most was 340.4 mm (13.4 in) on 16 June 1974.

Record daily precipitation for each month at San Juan Cacahuatepec (Cfe)
Month	Record daily precipitation (mm)	Date
Jan	68.3 mm (2.7 in)	5 January 1985
Feb	20.3 mm (0.8 in)	26 February 1989
Mar	55.4 mm (2.2 in)	17 March 1969
Apr	49.8 mm (2.0 in)	3 April 1966
May	106.4 mm (4.2 in)	20 May 1982
Jun	340.4 mm (13.4 in)	16 June 1974
Jul	214.4 mm (8.4 in)	26 July 1972
Aug	164.1 mm (6.5 in)	18 August 1995
Sep	212.1 mm (8.4 in)	15 September 1999
Oct	307.8 mm (12.1 in)	8 October 1997
Nov	85.9 mm (3.4 in)	1 November 1977
Dec	124.5 mm (4.9 in)	18 December 1966

Period of Record Coverage

1963 to 2000

38 years of record at San Juan Cacahuatepec (Cfe), 1963 to 2000. 3 years have data for under 90 percent of days and are left out of rankings: 1984, 1988, 1998.

Days with data per year at San Juan Cacahuatepec (Cfe)
Year	Days with data	Share of year	Complete
1963	342	94%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	336	92%	Yes
1975	365	100%	Yes
1976	341	93%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	364	100%	Yes
1984	121	33%	No
1985	365	100%	Yes
1986	364	100%	Yes
1987	365	100%	Yes
1988	305	83%	No
1989	365	100%	Yes
1990	365	100%	Yes
1991	365	100%	Yes
1992	365	100%	Yes
1993	365	100%	Yes
1994	364	100%	Yes
1995	365	100%	Yes
1996	366	100%	Yes
1997	365	100%	Yes
1998	306	84%	No
1999	365	100%	Yes
2000	366	100%	Yes

Latest Records

Latest records at San Juan Cacahuatepec (Cfe)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 December 2000	San Juan Cacahuatepec (Cfe), MX	daily high max	40.0 C (104.0 F)	0.6 C (1.1 F)	6 years	5 of 100 (Routine)
10 December 2000	San Juan Cacahuatepec (Cfe), MX	daily high min (Tie)	20.6 C (69.1 F)	tie	6 years	1 of 100 (Routine)
9 December 2000	San Juan Cacahuatepec (Cfe), MX	daily high min (Tie)	20.6 C (69.1 F)	tie	4 years	1 of 100 (Routine)
9 November 2000	San Juan Cacahuatepec (Cfe), MX	daily high max (Tie)	36.7 C (98.1 F)	tie	7 years	1 of 100 (Routine)
21 October 2000	San Juan Cacahuatepec (Cfe), MX	daily high max (Tie)	37.8 C (100.0 F)	tie	13 years	1 of 100 (Routine)
19 October 2000	San Juan Cacahuatepec (Cfe), MX	daily high max (Tie)	35.6 C (96.1 F)	tie	14 years	1 of 100 (Routine)
15 October 2000	San Juan Cacahuatepec (Cfe), MX	daily high max	37.8 C (100.0 F)	1.7 C (3.1 F)	14 years	14 of 100 (Routine)
13 October 2000	San Juan Cacahuatepec (Cfe), MX	daily high max	37.8 C (100.0 F)	1.1 C (2.0 F)	25 years	14 of 100 (Routine)
6 October 2000	San Juan Cacahuatepec (Cfe), MX	daily high max (Tie)	35.6 C (96.1 F)	tie	14 years	1 of 100 (Routine)
1 October 2000	San Juan Cacahuatepec (Cfe), MX	daily high max (Tie)	35.6 C (96.1 F)	tie	14 years	1 of 100 (Routine)
24 September 2000	San Juan Cacahuatepec (Cfe), MX	daily high max (Tie)	35.6 C (96.1 F)	tie	14 years	1 of 100 (Routine)
23 September 2000	San Juan Cacahuatepec (Cfe), MX	monthly high max (Tie)	37.8 C (100.0 F)	tie	0 years	3 of 100 (Routine)
22 September 2000	San Juan Cacahuatepec (Cfe), MX	daily high max (Tie)	35.6 C (96.1 F)	tie	14 years	1 of 100 (Routine)
19 September 2000	San Juan Cacahuatepec (Cfe), MX	daily rain	68.3 mm (2.7 in)	22.8 mm (0.9 in)	7 years	12 of 100 (Routine)
17 September 2000	San Juan Cacahuatepec (Cfe), MX	daily rain	99.8 mm (3.9 in)	54.8 mm (2.2 in)	7 years	24 of 100 (Routine)
14 September 2000	San Juan Cacahuatepec (Cfe), MX	daily high max	35.6 C (96.1 F)	0.6 C (1.1 F)	19 years	10 of 100 (Routine)
10 September 2000	San Juan Cacahuatepec (Cfe), MX	monthly high max (Tie)	37.8 C (100.0 F)	tie	0 years	3 of 100 (Routine)
6 September 2000	San Juan Cacahuatepec (Cfe), MX	daily high max	36.7 C (98.1 F)	1.1 C (2.0 F)	14 years	11 of 100 (Routine)
5 September 2000	San Juan Cacahuatepec (Cfe), MX	monthly high max (Tie)	37.8 C (100.0 F)	tie	0 years	3 of 100 (Routine)
1 September 2000	San Juan Cacahuatepec (Cfe), MX	monthly high max	37.8 C (100.0 F)	0.6 C (1.1 F)	12 years	18 of 100 (Routine)

Climate Trend

30 complete years, 1964 to 2000

One stripe for each of 30 complete years at San Juan Cacahuatepec (Cfe), 1964 to 2000. Blue stripes are years cooler than the station's own mean of 26.4 C (79.6 F); red stripes are warmer. The coolest year was 1971, at 23.7 C (74.6 F), and the warmest was 1991, at 28.0 C (82.4 F). The strongest colour marks a difference of 2.8 C (5.0 F).

Annual mean temperature at San Juan Cacahuatepec (Cfe) as warming stripes, 1964 to 2000
Year	Annual mean temperature	Difference from the station mean
1964	24.0 C	-2.38 C
1965	24.2 C	-2.27 C
1966	24.2 C	-2.26 C
1967	25.3 C	-1.14 C
1968	25.7 C	-0.77 C
1969	26.0 C	-0.39 C
1970	25.3 C	-1.13 C
1971	23.7 C	-2.77 C
1972	23.9 C	-2.55 C
1973	25.9 C	-0.54 C
1975	26.4 C	-0.05 C
1977	25.7 C	-0.75 C
1978	27.0 C	+0.58 C
1979	26.9 C	+0.51 C
1980	27.0 C	+0.55 C
1981	27.2 C	+0.79 C
1982	27.0 C	+0.60 C
1983	27.0 C	+0.58 C
1985	27.1 C	+0.67 C
1986	27.3 C	+0.89 C
1990	27.7 C	+1.30 C
1991	28.0 C	+1.56 C
1992	27.5 C	+1.05 C
1993	27.9 C	+1.47 C
1994	27.8 C	+1.34 C
1995	27.4 C	+0.99 C
1996	26.8 C	+0.36 C
1997	27.2 C	+0.80 C
1999	27.9 C	+1.49 C
2000	27.8 C	+1.39 C

The annual mean temperature here has risen by 1.0 C (0.8 to 1.3) per decade over 1964 to 2000. In Fahrenheit: 1.8 F (1.4 to 2.3) per decade. The slope is a straight line fitted to 30 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at San Juan Cacahuatepec (Cfe)
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	1.0 C (0.8 to 1.3) per decade	1.8 F (1.4 to 2.3) per decade	1964 to 2000	30	Rise
Mean daily maximum	1.2 C (0.8 to 1.7) per decade	2.2 F (1.4 to 3.1) per decade	1964 to 2000	30	Rise
Mean daily minimum	0.8 C (0.4 to 1.1) per decade	1.4 F (0.8 to 2.0) per decade	1964 to 2000	30	Rise

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

1963 to 2000

Yearly extremes at San Juan Cacahuatepec (Cfe): 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)	1982	40.0 C (104.0 F)	38
Coldest night (TNn)	10.6 C (51.1 F)	1968	15.0 C (59.0 F)	38
Wettest day (Rx1day)	340.4 mm (13.4 in)	1974	116.6 mm (4.6 in)	38
Wettest five days (Rx5day)	827.4 mm (32.6 in)	1974	256.2 mm (10.1 in)	38
Longest dry spell (CDD)	156 days	1999	114 days	38

Hottest day (TXx)

The hottest day of the year at San Juan Cacahuatepec (Cfe), 1963 to 2000. The record is 42.8 C (109.0 F) in 1982, marked on the chart; the median year is 40.0 C (104.0 F).

Hottest day (TXx) at San Juan Cacahuatepec (Cfe) by year
Year	Hottest day (TXx)
1963	30.6 C (87.1 F)
1964	32.8 C (91.0 F)
1965	32.8 C (91.0 F)
1966	36.7 C (98.1 F)
1967	40.0 C (104.0 F)
1968	38.9 C (102.0 F)
1969	40.6 C (105.1 F)
1970	40.0 C (104.0 F)
1971	35.0 C (95.0 F)
1972	36.1 C (97.0 F)
1973	37.8 C (100.0 F)
1974	40.0 C (104.0 F)
1975	40.0 C (104.0 F)
1976	35.6 C (96.1 F)
1977	33.9 C (93.0 F)
1978	41.1 C (106.0 F)
1979	40.6 C (105.1 F)
1980	39.4 C (102.9 F)
1981	42.2 C (108.0 F)
1982	42.8 C (109.0 F)
1983	41.1 C (106.0 F)
1984	40.0 C (104.0 F)
1985	40.0 C (104.0 F)
1986	39.4 C (102.9 F)
1987	42.2 C (108.0 F)
1988	38.9 C (102.0 F)
1989	40.0 C (104.0 F)
1990	40.0 C (104.0 F)
1991	42.2 C (108.0 F)
1992	41.1 C (106.0 F)
1993	40.6 C (105.1 F)
1994	40.6 C (105.1 F)
1995	40.6 C (105.1 F)
1996	38.9 C (102.0 F)
1997	40.6 C (105.1 F)
1998	40.0 C (104.0 F)
1999	41.7 C (107.1 F)
2000	41.7 C (107.1 F)

Coldest night (TNn)

The coldest night of the year at San Juan Cacahuatepec (Cfe), 1963 to 2000. The record is 10.6 C (51.1 F) in 1968, marked on the chart; the median year is 15.0 C (59.0 F).

Coldest night (TNn) at San Juan Cacahuatepec (Cfe) by year
Year	Coldest night (TNn)
1963	16.7 C (62.1 F)
1964	15.6 C (60.1 F)
1965	13.9 C (57.0 F)
1966	11.7 C (53.1 F)
1967	12.8 C (55.0 F)
1968	10.6 C (51.1 F)
1969	12.8 C (55.0 F)
1970	11.7 C (53.1 F)
1971	10.6 C (51.1 F)
1972	11.1 C (52.0 F)
1973	15.6 C (60.1 F)
1974	17.8 C (64.0 F)
1975	16.7 C (62.1 F)
1976	16.7 C (62.1 F)
1977	17.8 C (64.0 F)
1978	16.7 C (62.1 F)
1979	15.0 C (59.0 F)
1980	15.0 C (59.0 F)
1981	15.0 C (59.0 F)
1982	13.3 C (55.9 F)
1983	12.8 C (55.0 F)
1984	15.0 C (59.0 F)
1985	13.3 C (55.9 F)
1986	13.3 C (55.9 F)
1987	11.7 C (53.1 F)
1988	18.9 C (66.0 F)
1989	13.9 C (57.0 F)
1990	16.7 C (62.1 F)
1991	15.6 C (60.1 F)
1992	14.4 C (57.9 F)
1993	16.1 C (61.0 F)
1994	12.8 C (55.0 F)
1995	16.7 C (62.1 F)
1996	15.6 C (60.1 F)
1997	15.6 C (60.1 F)
1998	16.7 C (62.1 F)
1999	15.6 C (60.1 F)
2000	15.6 C (60.1 F)

Wettest day (Rx1day)

The wettest day of the year at San Juan Cacahuatepec (Cfe), 1963 to 2000. The record is 340.4 mm (13.4 in) in 1974, marked on the chart; the median year is 116.6 mm (4.6 in).

Wettest day (Rx1day) at San Juan Cacahuatepec (Cfe) by year
Year	Wettest day (Rx1day)
1963	19.8 mm (0.8 in)
1964	21.6 mm (0.9 in)
1965	81.8 mm (3.2 in)
1966	124.5 mm (4.9 in)
1967	199.9 mm (7.9 in)
1968	111.8 mm (4.4 in)
1969	124.0 mm (4.9 in)
1970	117.9 mm (4.6 in)
1971	117.9 mm (4.6 in)
1972	214.4 mm (8.4 in)
1973	240.3 mm (9.5 in)
1974	340.4 mm (13.4 in)
1975	207.5 mm (8.2 in)
1976	84.8 mm (3.3 in)
1977	89.2 mm (3.5 in)
1978	80.8 mm (3.2 in)
1979	98.3 mm (3.9 in)
1980	130.3 mm (5.1 in)
1981	128.3 mm (5.1 in)
1982	106.4 mm (4.2 in)
1983	100.3 mm (3.9 in)
1984	15.0 mm (0.6 in)
1985	97.8 mm (3.9 in)
1986	115.3 mm (4.5 in)
1987	103.9 mm (4.1 in)
1988	80.3 mm (3.2 in)
1989	125.5 mm (4.9 in)
1990	91.9 mm (3.6 in)
1991	114.8 mm (4.5 in)
1992	127.0 mm (5.0 in)
1993	140.0 mm (5.5 in)
1994	73.9 mm (2.9 in)
1995	164.1 mm (6.5 in)
1996	162.8 mm (6.4 in)
1997	307.8 mm (12.1 in)
1998	143.3 mm (5.6 in)
1999	212.1 mm (8.4 in)
2000	105.4 mm (4.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at San Juan Cacahuatepec (Cfe), 1963 to 2000. The record is 827.4 mm (32.6 in) in 1974, marked on the chart; the median year is 256.2 mm (10.1 in).

Wettest five days (Rx5day) at San Juan Cacahuatepec (Cfe) by year
Year	Wettest five days (Rx5day)
1963	39.2 mm (1.5 in)
1964	65.2 mm (2.6 in)
1965	145.8 mm (5.7 in)
1966	226.7 mm (8.9 in)
1967	496.7 mm (19.6 in)
1968	303.3 mm (11.9 in)
1969	286.4 mm (11.3 in)
1970	285.5 mm (11.2 in)
1971	233.5 mm (9.2 in)
1972	464.7 mm (18.3 in)
1973	526.9 mm (20.7 in)
1974	827.4 mm (32.6 in)
1975	489.2 mm (19.3 in)
1976	269.9 mm (10.6 in)
1977	348.6 mm (13.7 in)
1978	192.5 mm (7.6 in)
1979	323.4 mm (12.7 in)
1980	244.1 mm (9.6 in)
1981	288.2 mm (11.3 in)
1982	195.6 mm (7.7 in)
1983	176.3 mm (6.9 in)
1984	15.0 mm (0.6 in)
1985	163.1 mm (6.4 in)
1986	160.0 mm (6.3 in)
1987	221.6 mm (8.7 in)
1988	196.4 mm (7.7 in)
1989	181.9 mm (7.2 in)
1990	159.3 mm (6.3 in)
1991	224.8 mm (8.9 in)
1992	268.3 mm (10.6 in)
1993	269.5 mm (10.6 in)
1994	160.3 mm (6.3 in)
1995	282.3 mm (11.1 in)
1996	394.7 mm (15.5 in)
1997	451.5 mm (17.8 in)
1998	276.6 mm (10.9 in)
1999	279.4 mm (11.0 in)
2000	240.7 mm (9.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at San Juan Cacahuatepec (Cfe), 1963 to 2000. The record is 156 days in 1999, marked on the chart; the median year is 114 days.

Longest dry spell (CDD) at San Juan Cacahuatepec (Cfe) by year
Year	Longest dry spell (CDD)
1963	129 days
1964	142 days
1965	152 days
1966	63 days
1967	130 days
1968	84 days
1969	70 days
1970	149 days
1971	95 days
1972	114 days
1973	95 days
1974	76 days
1975	128 days
1976	150 days
1977	145 days
1978	114 days
1979	113 days
1980	114 days
1981	127 days
1982	56 days
1983	71 days
1984	57 days
1985	57 days
1986	108 days
1987	86 days
1988	121 days
1989	86 days
1990	53 days
1991	120 days
1992	92 days
1993	91 days
1994	138 days
1995	62 days
1996	114 days
1997	134 days
1998	65 days
1999	156 days
2000	139 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

35 years, 1963 to 2000

A day with at least 118.0 mm (4.6 in) of rain is expected about once in 2 years. A day with at least 385.1 mm (15.2 in) of rain is expected about once in 100 years.

Rainfall return levels at San Juan Cacahuatepec (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	118.0 mm (4.6 in)
5 years	174.9 mm (6.9 in)
10 years	217.8 mm (8.6 in)
25 years	278.8 mm (11.0 in)
50 years	329.6 mm (13.0 in)	Longer than the 35 years of record
100 years	385.1 mm (15.2 in)	Longer than the 35 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, 35 years of values from 1963 to 2000.

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: 340.4 mm (13.4 in) in 1974; 307.8 mm (12.1 in) in 1997; 240.3 mm (9.5 in) in 1973.

Download the Data

Data for San Juan Cacahuatepec (Cfe) standing records by year: CSV or JSON. Field meanings are on the data page.
Data for San Juan Cacahuatepec (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.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).