Acihuatl Weather Records (MXN00014007)

Record envelope, standing records and threshold days for Acihuatl (MXN00014007), Mexico, with 31 years of record.

Key Facts for Acihuatl

Acihuatl (MXN00014007) is a weather station in Mexico at 19.90 latitude and -104.72 longitude, 420 m (1,377 ft) above sea level.
The station reports from 1969 to 1999, 31 years of record.
1,464 records set at Acihuatl still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Mexico, 19.90 latitude, -104.72 longitude.
Elevation: 420 m (1,377 ft).
Period of record: 1969 to 1999, 31 years.
Eligible elements: none yet.

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 Acihuatl. 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 Acihuatl, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	39.4 C (102.9 F)	0.6 C (33.1 F)	n/a	n/a
Feb	40.0 C (104.0 F)	3.9 C (39.0 F)	n/a	n/a
Mar	41.7 C (107.1 F)	2.8 C (37.0 F)	n/a	n/a
Apr	41.7 C (107.1 F)	3.3 C (37.9 F)	n/a	n/a
May	43.9 C (111.0 F)	5.6 C (42.1 F)	n/a	n/a
Jun	41.7 C (107.1 F)	10.6 C (51.1 F)	n/a	n/a
Jul	40.0 C (104.0 F)	15.0 C (59.0 F)	n/a	n/a
Aug	40.0 C (104.0 F)	11.7 C (53.1 F)	n/a	n/a
Sep	38.9 C (102.0 F)	11.7 C (53.1 F)	n/a	n/a
Oct	38.9 C (102.0 F)	8.9 C (48.0 F)	n/a	n/a
Nov	38.9 C (102.0 F)	5.0 C (41.0 F)	n/a	n/a
Dec	37.8 C (100.0 F)	2.8 C (37.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Acihuatl still stand. 1976 holds the most, with 164.

Standing records at Acihuatl by the year they were set
Year set	Standing records
1969	153
1970	90
1971	17
1975	73
1976	164
1977	106
1978	56
1979	61
1980	103
1981	93
1982	122
1983	98
1984	59
1985	58
1986	111
1987	35
1988	50
1989	10
1999	5

Wettest Day of Each Month

Oct: 109.5 mm (4.3 in)

The wettest day on record for each calendar month at Acihuatl. The most was 109.5 mm (4.3 in) on 1 October 1985.

Record daily precipitation for each month at Acihuatl
Month	Record daily precipitation (mm)	Date
Jan	55.9 mm (2.2 in)	17 January 1981
Feb	42.9 mm (1.7 in)	12 February 1976
Mar	0.0 mm (0.00 in)	1 March 1969
Apr	3.3 mm (0.13 in)	20 April 1977
May	49.8 mm (2.0 in)	29 May 1975
Jun	87.4 mm (3.4 in)	23 June 1969
Jul	97.5 mm (3.8 in)	17 July 1983
Aug	74.9 mm (2.9 in)	1 August 1985
Sep	100.1 mm (3.9 in)	13 September 1979
Oct	109.5 mm (4.3 in)	1 October 1985
Nov	44.5 mm (1.8 in)	1 November 1984
Dec	21.1 mm (0.8 in)	24 December 1980

Period of Record Coverage

1969 to 1999

19 years of record at Acihuatl, 1969 to 1999. 12 years have data for under 90 percent of days and are left out of rankings: 1969, 1970, 1971, 1975, 1976, 1978, 1979, 1985 and others.

Days with data per year at Acihuatl
Year	Days with data	Share of year	Complete
1969	296	81%	No
1970	271	74%	No
1971	31	8%	No
1975	28	8%	No
1976	264	72%	No
1977	364	100%	Yes
1978	273	75%	No
1979	174	48%	No
1980	334	91%	Yes
1981	335	92%	Yes
1982	362	99%	Yes
1983	364	100%	Yes
1984	366	100%	Yes
1985	304	83%	No
1986	365	100%	Yes
1987	151	41%	No
1988	62	17%	No
1989	31	8%	No
1999	7	2%	No

Latest Records

No records were set at this station in the latest data.

Extremes by Year

1969 to 1999

Yearly extremes at Acihuatl: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	43.9 C (111.0 F)	1987	40.0 C (104.0 F)	19
Coldest night (TNn)	0.6 C (33.1 F)	1988	5.0 C (41.0 F)	19
Wettest day (Rx1day)	109.5 mm (4.3 in)	1985	74.7 mm (2.9 in)	18
Wettest five days (Rx5day)	256.8 mm (10.1 in)	1983	161.0 mm (6.3 in)	18
Longest dry spell (CDD)	142 days	1969	111 days	18

Hottest day (TXx)

The hottest day of the year at Acihuatl, 1969 to 1999. The record is 43.9 C (111.0 F) in 1987, marked on the chart; the median year is 40.0 C (104.0 F).

Hottest day (TXx) at Acihuatl by year
Year	Hottest day (TXx)
1969	40.0 C (104.0 F)
1970	38.9 C (102.0 F)
1971	34.4 C (93.9 F)
1975	27.8 C (82.0 F)
1976	38.3 C (100.9 F)
1977	40.0 C (104.0 F)
1978	40.0 C (104.0 F)
1979	38.3 C (100.9 F)
1980	41.7 C (107.1 F)
1981	40.6 C (105.1 F)
1982	41.7 C (107.1 F)
1983	41.7 C (107.1 F)
1984	41.7 C (107.1 F)
1985	41.7 C (107.1 F)
1986	41.7 C (107.1 F)
1987	43.9 C (111.0 F)
1988	42.2 C (108.0 F)
1989	38.9 C (102.0 F)
1999	26.7 C (80.1 F)

Coldest night (TNn)

The coldest night of the year at Acihuatl, 1969 to 1999. The record is 0.6 C (33.1 F) in 1988, marked on the chart; the median year is 5.0 C (41.0 F).

Coldest night (TNn) at Acihuatl by year
Year	Coldest night (TNn)
1969	4.4 C (39.9 F)
1970	5.0 C (41.0 F)
1971	5.0 C (41.0 F)
1975	3.9 C (39.0 F)
1976	5.6 C (42.1 F)
1977	4.4 C (39.9 F)
1978	5.0 C (41.0 F)
1979	5.0 C (41.0 F)
1980	3.3 C (37.9 F)
1981	5.0 C (41.0 F)
1982	4.4 C (39.9 F)
1983	2.8 C (37.0 F)
1984	5.0 C (41.0 F)
1985	5.0 C (41.0 F)
1986	2.8 C (37.0 F)
1987	3.9 C (39.0 F)
1988	0.6 C (33.1 F)
1989	10.6 C (51.1 F)
1999	11.7 C (53.1 F)

Wettest day (Rx1day)

The wettest day of the year at Acihuatl, 1969 to 1999. The record is 109.5 mm (4.3 in) in 1985, marked on the chart; the median year is 74.7 mm (2.9 in).

Wettest day (Rx1day) at Acihuatl by year
Year	Wettest day (Rx1day)
1969	87.4 mm (3.4 in)
1970	57.9 mm (2.3 in)
1971	14.0 mm (0.6 in)
1975	73.4 mm (2.9 in)
1976	79.8 mm (3.1 in)
1977	59.9 mm (2.4 in)
1978	75.9 mm (3.0 in)
1979	100.1 mm (3.9 in)
1980	88.9 mm (3.5 in)
1981	84.1 mm (3.3 in)
1982	63.0 mm (2.5 in)
1983	97.5 mm (3.8 in)
1984	63.0 mm (2.5 in)
1985	109.5 mm (4.3 in)
1986	93.0 mm (3.7 in)
1987	39.9 mm (1.6 in)
1988	0.5 mm (0.02 in)
1989	9.9 mm (0.39 in)
1999	n/a

Wettest five days (Rx5day)

The wettest five days of the year at Acihuatl, 1969 to 1999. The record is 256.8 mm (10.1 in) in 1983, marked on the chart; the median year is 161.0 mm (6.3 in).

Wettest five days (Rx5day) at Acihuatl by year
Year	Wettest five days (Rx5day)
1969	196.4 mm (7.7 in)
1970	134.3 mm (5.3 in)
1971	25.2 mm (1.0 in)
1975	174.7 mm (6.9 in)
1976	151.6 mm (6.0 in)
1977	169.6 mm (6.7 in)
1978	195.1 mm (7.7 in)
1979	231.7 mm (9.1 in)
1980	169.2 mm (6.7 in)
1981	230.1 mm (9.1 in)
1982	152.7 mm (6.0 in)
1983	256.8 mm (10.1 in)
1984	145.6 mm (5.7 in)
1985	141.0 mm (5.6 in)
1986	225.3 mm (8.9 in)
1987	41.7 mm (1.6 in)
1988	0.5 mm (0.02 in)
1989	20.1 mm (0.8 in)
1999	n/a

Longest dry spell (CDD)

The longest dry spell of the year at Acihuatl, 1969 to 1999. The record is 142 days in 1969, marked on the chart; the median year is 111 days.

Longest dry spell (CDD) at Acihuatl by year
Year	Longest dry spell (CDD)
1969	142 days
1970	100 days
1971	22 days
1975	117 days
1976	116 days
1977	56 days
1978	110 days
1979	92 days
1980	112 days
1981	112 days
1982	99 days
1983	126 days
1984	131 days
1985	137 days
1986	131 days
1987	40 days
1988	31 days
1989	27 days
1999	n/a

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.

Download the Data

Data for Acihuatl standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Acihuatl 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).