Acapetlahuaya Weather Records (MXN00012001)

Record envelope, standing records and threshold days for Acapetlahuaya (MXN00012001), Mexico, with 50 years of record.

Key Facts for Acapetlahuaya

Acapetlahuaya (MXN00012001) is a weather station in Mexico at 18.33 latitude and -100.07 longitude, 1,292 m (4,238 ft) above sea level.
The station reports from 1964 to 2013, 50 years of record.
1,464 records set at Acapetlahuaya still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Acapetlahuaya set a daily record precipitation of 60.2 mm (2.4 in) on 17 July 2013.

About the Station

Location: Mexico, 18.33 latitude, -100.07 longitude.
Elevation: 1,292 m (4,238 ft).
Period of record: 1964 to 2013, 50 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 Acapetlahuaya. 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 Acapetlahuaya, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	38.9 C (102.0 F)	5.0 C (41.0 F)	n/a	n/a
Feb	37.8 C (100.0 F)	5.0 C (41.0 F)	n/a	n/a
Mar	40.0 C (104.0 F)	6.7 C (44.1 F)	n/a	n/a
Apr	39.4 C (102.9 F)	6.7 C (44.1 F)	n/a	n/a
May	38.9 C (102.0 F)	6.7 C (44.1 F)	n/a	n/a
Jun	38.9 C (102.0 F)	6.7 C (44.1 F)	n/a	n/a
Jul	36.7 C (98.1 F)	6.7 C (44.1 F)	n/a	n/a
Aug	38.9 C (102.0 F)	7.8 C (46.0 F)	n/a	n/a
Sep	36.7 C (98.1 F)	6.7 C (44.1 F)	n/a	n/a
Oct	37.2 C (99.0 F)	6.7 C (44.1 F)	n/a	n/a
Nov	35.0 C (95.0 F)	6.7 C (44.1 F)	n/a	n/a
Dec	35.0 C (95.0 F)	5.6 C (42.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Acapetlahuaya still stand. 1993 holds the most, with 250.

Standing records at Acapetlahuaya by the year they were set
Year set	Standing records
1974	18
1975	13
1976	13
1977	24
1978	20
1979	12
1980	23
1981	13
1982	7
1983	27
1984	23
1985	19
1986	29
1987	61
1988	12
1989	13
1990	74
1991	15
1992	43
1993	250
1994	142
1995	137
1996	36
1997	58
1998	134
1999	77
2000	22
2001	8
2003	6
2004	6
2005	74
2006	13
2008	3
2009	7
2010	32

Wettest Day of Each Month

Jul: 97.8 mm (3.9 in)

The wettest day on record for each calendar month at Acapetlahuaya. The most was 97.8 mm (3.9 in) on 1 July 1966.

Record daily precipitation for each month at Acapetlahuaya
Month	Record daily precipitation (mm)	Date
Jan	62.0 mm (2.4 in)	25 January 1980
Feb	18.8 mm (0.7 in)	1 February 2010
Mar	4.3 mm (0.17 in)	16 March 1978
Apr	32.8 mm (1.3 in)	18 April 1996
May	45.5 mm (1.8 in)	25 May 1975
Jun	86.4 mm (3.4 in)	27 June 1986
Jul	97.8 mm (3.9 in)	1 July 1966
Aug	79.8 mm (3.1 in)	26 August 1977
Sep	89.9 mm (3.5 in)	29 September 2008
Oct	62.0 mm (2.4 in)	14 October 1971
Nov	22.9 mm (0.9 in)	10 November 1995
Dec	40.9 mm (1.6 in)	19 December 2001

Period of Record Coverage

1974 to 2013

39 years of record at Acapetlahuaya, 1974 to 2013. 18 years have data for under 90 percent of days and are left out of rankings: 1974, 1986, 1989, 1991, 1992, 1993, 1994, 1996 and others.

Days with data per year at Acapetlahuaya
Year	Days with data	Share of year	Complete
1974	310	85%	No
1975	365	100%	Yes
1976	366	100%	Yes
1977	364	100%	Yes
1978	362	99%	Yes
1979	365	100%	Yes
1980	350	96%	Yes
1981	365	100%	Yes
1982	334	92%	Yes
1983	365	100%	Yes
1984	364	99%	Yes
1985	334	92%	Yes
1986	304	83%	No
1987	365	100%	Yes
1988	366	100%	Yes
1989	283	78%	No
1990	350	96%	Yes
1991	38	10%	No
1992	274	75%	No
1993	200	55%	No
1994	245	67%	No
1995	335	92%	Yes
1996	280	77%	No
1997	357	98%	Yes
1998	304	83%	No
1999	365	100%	Yes
2000	304	83%	No
2001	365	100%	Yes
2002	365	100%	Yes
2003	362	99%	Yes
2004	335	92%	Yes
2005	314	86%	No
2006	158	43%	No
2007	63	17%	No
2008	44	12%	No
2009	16	4%	No
2010	55	15%	No
2012	1	0%	No
2013	4	1%	No

Latest Records

Latest records at Acapetlahuaya
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 July 2013	Acapetlahuaya, MX	daily rain	60.2 mm (2.4 in)	9.9 mm (0.39 in)	24 years	19 of 100 (Routine)
6 July 2013	Acapetlahuaya, MX	daily rain	60.7 mm (2.4 in)	19.8 mm (0.8 in)	12 years	23 of 100 (Routine)
11 June 2013	Acapetlahuaya, MX	daily rain	75.9 mm (3.0 in)	41.1 mm (1.6 in)	47 years	48 of 100 (Notable)
8 June 2013	Acapetlahuaya, MX	daily rain	79.8 mm (3.1 in)	54.9 mm (2.2 in)	43 years	56 of 100 (Notable)
7 June 2013	Acapetlahuaya, MX	daily rain	58.4 mm (2.3 in)	22.1 mm (0.9 in)	43 years	32 of 100 (Routine)
2 January 2013	Acapetlahuaya, MX	daily rain	4.6 mm (0.18 in)	4.6 mm (0.18 in)	48 years	20 of 100 (Routine)
31 October 2010	Acapetlahuaya, MX	daily high max	35.6 C (96.1 F)	2.8 C (5.0 F)	15 years	19 of 100 (Routine)
30 October 2010	Acapetlahuaya, MX	daily high max	35.6 C (96.1 F)	2.8 C (5.0 F)	15 years	19 of 100 (Routine)
29 October 2010	Acapetlahuaya, MX	daily high max	35.6 C (96.1 F)	2.8 C (5.0 F)	15 years	19 of 100 (Routine)
28 October 2010	Acapetlahuaya, MX	daily high max	35.6 C (96.1 F)	3.9 C (7.0 F)	33 years	29 of 100 (Routine)
27 October 2010	Acapetlahuaya, MX	daily high max	35.6 C (96.1 F)	3.9 C (7.0 F)	15 years	23 of 100 (Routine)
26 October 2010	Acapetlahuaya, MX	daily high max	35.6 C (96.1 F)	2.8 C (5.0 F)	15 years	19 of 100 (Routine)
25 October 2010	Acapetlahuaya, MX	daily high max	35.6 C (96.1 F)	2.8 C (5.0 F)	15 years	19 of 100 (Routine)
24 October 2010	Acapetlahuaya, MX	daily high max	35.6 C (96.1 F)	2.8 C (5.0 F)	15 years	19 of 100 (Routine)
23 October 2010	Acapetlahuaya, MX	daily high max	35.6 C (96.1 F)	2.8 C (5.0 F)	15 years	19 of 100 (Routine)
22 October 2010	Acapetlahuaya, MX	daily high max	35.6 C (96.1 F)	2.8 C (5.0 F)	15 years	19 of 100 (Routine)
21 October 2010	Acapetlahuaya, MX	daily high max	35.6 C (96.1 F)	2.3 C (4.1 F)	33 years	23 of 100 (Routine)
20 October 2010	Acapetlahuaya, MX	daily high max	35.6 C (96.1 F)	2.8 C (5.0 F)	15 years	19 of 100 (Routine)
19 October 2010	Acapetlahuaya, MX	daily high max	35.6 C (96.1 F)	2.8 C (5.0 F)	15 years	19 of 100 (Routine)
18 October 2010	Acapetlahuaya, MX	daily high max	35.6 C (96.1 F)	2.8 C (5.0 F)	15 years	19 of 100 (Routine)

Climate Trend

16 complete years, 1975 to 2003

One stripe for each of 16 complete years at Acapetlahuaya, 1975 to 2003. Blue stripes are years cooler than the station's own mean of 22.9 C (73.3 F); red stripes are warmer. The coolest year was 1990, at 21.3 C (70.3 F), and the warmest was 2003, at 23.9 C (75.0 F). The strongest colour marks a difference of 1.7 C (3.1 F).

Annual mean temperature at Acapetlahuaya as warming stripes, 1975 to 2003
Year	Annual mean temperature	Difference from the station mean
1975	22.7 C	-0.26 C
1976	22.9 C	-0.02 C
1977	23.5 C	+0.56 C
1978	22.8 C	-0.17 C
1979	23.1 C	+0.12 C
1981	22.1 C	-0.85 C
1983	22.3 C	-0.61 C
1984	22.2 C	-0.73 C
1987	23.7 C	+0.78 C
1988	22.9 C	-0.02 C
1990	21.3 C	-1.68 C
1997	23.9 C	+0.95 C
1999	23.1 C	+0.13 C
2001	23.1 C	+0.21 C
2002	23.5 C	+0.56 C
2003	23.9 C	+0.98 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

1964 to 2013

Yearly extremes at Acapetlahuaya: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	40.0 C (104.0 F)	1995	36.7 C (98.1 F)	39
Coldest night (TNn)	5.0 C (41.0 F)	1995	10.6 C (51.1 F)	37
Wettest day (Rx1day)	97.8 mm (3.9 in)	1966	52.9 mm (2.1 in)	50
Wettest five days (Rx5day)	233.9 mm (9.2 in)	2013	113.2 mm (4.5 in)	50
Longest dry spell (CDD)	170 days	2007	126 days	50

Hottest day (TXx)

The hottest day of the year at Acapetlahuaya, 1964 to 2013. The record is 40.0 C (104.0 F) in 1995, marked on the chart; the median year is 36.7 C (98.1 F).

Hottest day (TXx) at Acapetlahuaya by year
Year	Hottest day (TXx)
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	37.2 C (99.0 F)
1975	36.7 C (98.1 F)
1976	39.4 C (102.9 F)
1977	38.9 C (102.0 F)
1978	36.1 C (97.0 F)
1979	38.9 C (102.0 F)
1980	36.1 C (97.0 F)
1981	35.0 C (95.0 F)
1982	36.7 C (98.1 F)
1983	36.1 C (97.0 F)
1984	35.6 C (96.1 F)
1985	34.4 C (93.9 F)
1986	36.7 C (98.1 F)
1987	36.7 C (98.1 F)
1988	36.7 C (98.1 F)
1989	35.0 C (95.0 F)
1990	35.0 C (95.0 F)
1991	37.8 C (100.0 F)
1992	35.6 C (96.1 F)
1993	38.9 C (102.0 F)
1994	33.9 C (93.0 F)
1995	40.0 C (104.0 F)
1996	32.8 C (91.0 F)
1997	36.7 C (98.1 F)
1998	35.0 C (95.0 F)
1999	37.8 C (100.0 F)
2000	33.9 C (93.0 F)
2001	36.7 C (98.1 F)
2002	36.7 C (98.1 F)
2003	37.8 C (100.0 F)
2004	36.7 C (98.1 F)
2005	37.8 C (100.0 F)
2006	37.8 C (100.0 F)
2007	36.7 C (98.1 F)
2008	36.7 C (98.1 F)
2009	36.7 C (98.1 F)
2010	36.1 C (97.0 F)
2011	n/a
2012	35.0 C (95.0 F)
2013	35.6 C (96.1 F)

Coldest night (TNn)

The coldest night of the year at Acapetlahuaya, 1964 to 2013. The record is 5.0 C (41.0 F) in 1995, marked on the chart; the median year is 10.6 C (51.1 F).

Coldest night (TNn) at Acapetlahuaya by year
Year	Coldest night (TNn)
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	11.7 C (53.1 F)
1975	10.6 C (51.1 F)
1976	11.7 C (53.1 F)
1977	11.1 C (52.0 F)
1978	10.0 C (50.0 F)
1979	10.6 C (51.1 F)
1980	10.6 C (51.1 F)
1981	10.0 C (50.0 F)
1982	10.0 C (50.0 F)
1983	9.4 C (48.9 F)
1984	10.6 C (51.1 F)
1985	10.6 C (51.1 F)
1986	10.0 C (50.0 F)
1987	13.3 C (55.9 F)
1988	10.0 C (50.0 F)
1989	10.0 C (50.0 F)
1990	10.0 C (50.0 F)
1991	8.9 C (48.0 F)
1992	6.7 C (44.1 F)
1993	6.7 C (44.1 F)
1994	5.6 C (42.1 F)
1995	5.0 C (41.0 F)
1996	6.7 C (44.1 F)
1997	10.0 C (50.0 F)
1998	12.8 C (55.0 F)
1999	12.8 C (55.0 F)
2000	12.8 C (55.0 F)
2001	10.6 C (51.1 F)
2002	8.9 C (48.0 F)
2003	11.7 C (53.1 F)
2004	10.0 C (50.0 F)
2005	12.8 C (55.0 F)
2006	11.7 C (53.1 F)
2007	11.1 C (52.0 F)
2008	12.8 C (55.0 F)
2009	n/a
2010	10.6 C (51.1 F)
2011	n/a
2012	n/a
2013	10.6 C (51.1 F)

Wettest day (Rx1day)

The wettest day of the year at Acapetlahuaya, 1964 to 2013. The record is 97.8 mm (3.9 in) in 1966, marked on the chart; the median year is 52.9 mm (2.1 in).

Wettest day (Rx1day) at Acapetlahuaya by year
Year	Wettest day (Rx1day)
1964	38.1 mm (1.5 in)
1965	64.8 mm (2.6 in)
1966	97.8 mm (3.9 in)
1967	59.9 mm (2.4 in)
1968	65.8 mm (2.6 in)
1969	33.3 mm (1.3 in)
1970	57.9 mm (2.3 in)
1971	74.9 mm (2.9 in)
1972	65.8 mm (2.6 in)
1973	73.9 mm (2.9 in)
1974	84.8 mm (3.3 in)
1975	64.8 mm (2.6 in)
1976	64.8 mm (2.6 in)
1977	84.8 mm (3.3 in)
1978	50.8 mm (2.0 in)
1979	54.9 mm (2.2 in)
1980	70.9 mm (2.8 in)
1981	46.0 mm (1.8 in)
1982	39.4 mm (1.6 in)
1983	39.9 mm (1.6 in)
1984	55.4 mm (2.2 in)
1985	67.8 mm (2.7 in)
1986	86.4 mm (3.4 in)
1987	47.0 mm (1.9 in)
1988	50.3 mm (2.0 in)
1989	36.1 mm (1.4 in)
1990	8.9 mm (0.35 in)
1991	45.5 mm (1.8 in)
1992	64.8 mm (2.6 in)
1993	31.8 mm (1.3 in)
1994	22.9 mm (0.9 in)
1995	26.9 mm (1.1 in)
1996	49.8 mm (2.0 in)
1997	46.2 mm (1.8 in)
1998	59.9 mm (2.4 in)
1999	54.9 mm (2.2 in)
2000	50.8 mm (2.0 in)
2001	62.0 mm (2.4 in)
2002	45.0 mm (1.8 in)
2003	40.4 mm (1.6 in)
2004	47.8 mm (1.9 in)
2005	37.8 mm (1.5 in)
2006	55.4 mm (2.2 in)
2007	59.9 mm (2.4 in)
2008	97.8 mm (3.9 in)
2009	34.8 mm (1.4 in)
2010	39.9 mm (1.6 in)
2011	19.8 mm (0.8 in)
2012	39.9 mm (1.6 in)
2013	79.8 mm (3.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Acapetlahuaya, 1964 to 2013. The record is 233.9 mm (9.2 in) in 2013, marked on the chart; the median year is 113.2 mm (4.5 in).

Wettest five days (Rx5day) at Acapetlahuaya by year
Year	Wettest five days (Rx5day)
1964	65.5 mm (2.6 in)
1965	160.1 mm (6.3 in)
1966	210.4 mm (8.3 in)
1967	125.4 mm (4.9 in)
1968	129.8 mm (5.1 in)
1969	67.1 mm (2.6 in)
1970	118.9 mm (4.7 in)
1971	193.6 mm (7.6 in)
1972	173.2 mm (6.8 in)
1973	156.1 mm (6.1 in)
1974	146.8 mm (5.8 in)
1975	164.4 mm (6.5 in)
1976	115.7 mm (4.6 in)
1977	121.9 mm (4.8 in)
1978	100.3 mm (3.9 in)
1979	96.8 mm (3.8 in)
1980	197.3 mm (7.8 in)
1981	115.6 mm (4.6 in)
1982	134.9 mm (5.3 in)
1983	98.8 mm (3.9 in)
1984	137.2 mm (5.4 in)
1985	120.4 mm (4.7 in)
1986	142.2 mm (5.6 in)
1987	80.8 mm (3.2 in)
1988	127.6 mm (5.0 in)
1989	46.6 mm (1.8 in)
1990	23.4 mm (0.9 in)
1991	110.8 mm (4.4 in)
1992	172.4 mm (6.8 in)
1993	87.5 mm (3.4 in)
1994	77.0 mm (3.0 in)
1995	65.6 mm (2.6 in)
1996	86.7 mm (3.4 in)
1997	94.3 mm (3.7 in)
1998	154.3 mm (6.1 in)
1999	93.8 mm (3.7 in)
2000	79.3 mm (3.1 in)
2001	136.4 mm (5.4 in)
2002	97.3 mm (3.8 in)
2003	99.1 mm (3.9 in)
2004	110.2 mm (4.3 in)
2005	91.4 mm (3.6 in)
2006	108.5 mm (4.3 in)
2007	176.4 mm (6.9 in)
2008	171.1 mm (6.7 in)
2009	57.7 mm (2.3 in)
2010	77.2 mm (3.0 in)
2011	60.9 mm (2.4 in)
2012	79.2 mm (3.1 in)
2013	233.9 mm (9.2 in)

Longest dry spell (CDD)

The longest dry spell of the year at Acapetlahuaya, 1964 to 2013. The record is 170 days in 2007, marked on the chart; the median year is 126 days.

Longest dry spell (CDD) at Acapetlahuaya by year
Year	Longest dry spell (CDD)
1964	27 days
1965	118 days
1966	92 days
1967	123 days
1968	104 days
1969	125 days
1970	151 days
1971	144 days
1972	152 days
1973	94 days
1974	135 days
1975	99 days
1976	129 days
1977	57 days
1978	64 days
1979	134 days
1980	99 days
1981	87 days
1982	83 days
1983	70 days
1984	89 days
1985	122 days
1986	59 days
1987	152 days
1988	98 days
1989	150 days
1990	103 days
1991	128 days
1992	26 days
1993	127 days
1994	63 days
1995	116 days
1996	108 days
1997	127 days
1998	152 days
1999	159 days
2000	55 days
2001	154 days
2002	150 days
2003	141 days
2004	129 days
2005	151 days
2006	159 days
2007	170 days
2008	98 days
2009	148 days
2010	129 days
2011	160 days
2012	162 days
2013	130 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

40 years, 1965 to 2012

A day with at least 53.5 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 101.3 mm (4.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Acapetlahuaya: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	53.5 mm (2.1 in)
5 years	70.5 mm (2.8 in)
10 years	79.8 mm (3.1 in)
25 years	89.7 mm (3.5 in)
50 years	96.0 mm (3.8 in)	Longer than the 40 years of record
100 years	101.3 mm (4.0 in)	Longer than the 40 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, 40 years of values from 1965 to 2012.

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: 97.8 mm (3.9 in) in 1966; 97.8 mm (3.9 in) in 2008; 84.8 mm (3.3 in) in 1974.

Download the Data

Data for Acapetlahuaya standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Acapetlahuaya 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 2026-10-13 (13 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).