Ahuatenco Weather Records (MXN00015173)

Record envelope, standing records and threshold days for Ahuatenco (MXN00015173), Mexico, with 44 years of record.

Key Facts for Ahuatenco

Ahuatenco (MXN00015173) is a weather station in Mexico at 18.93 latitude and -99.32 longitude, 2,232 m (7,322 ft) above sea level.
The station reports from 1969 to 2012, 44 years of record.
1,464 records set at Ahuatenco still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Ahuatenco tied a daily record low maximum temperature of 18.9 C (66.0 F) on 11 February 2012.

About the Station

Location: Mexico, 18.93 latitude, -99.32 longitude.
Elevation: 2,232 m (7,322 ft).
Period of record: 1969 to 2012, 44 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 Ahuatenco. 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 Ahuatenco, 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)	0.6 C (33.1 F)	n/a	n/a
Feb	35.6 C (96.1 F)	2.8 C (37.0 F)	n/a	n/a
Mar	35.0 C (95.0 F)	5.0 C (41.0 F)	n/a	n/a
Apr	35.6 C (96.1 F)	6.7 C (44.1 F)	n/a	n/a
May	35.0 C (95.0 F)	0.6 C (33.1 F)	n/a	n/a
Jun	30.6 C (87.1 F)	7.8 C (46.0 F)	n/a	n/a
Jul	31.1 C (88.0 F)	8.9 C (48.0 F)	n/a	n/a
Aug	30.0 C (86.0 F)	8.9 C (48.0 F)	n/a	n/a
Sep	33.9 C (93.0 F)	7.8 C (46.0 F)	n/a	n/a
Oct	31.7 C (89.1 F)	2.8 C (37.0 F)	n/a	n/a
Nov	27.8 C (82.0 F)	5.0 C (41.0 F)	n/a	n/a
Dec	30.0 C (86.0 F)	1.7 C (35.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Ahuatenco still stand. 2008 holds the most, with 167.

Standing records at Ahuatenco by the year they were set
Year set	Standing records
1969	83
1970	3
1971	71
1972	53
1973	27
1974	45
1975	76
1976	152
1977	83
1978	12
1979	17
1980	32
1981	59
1982	26
1983	43
1984	27
1985	8
1987	8
1988	18
1989	16
1990	9
1993	56
1994	11
1995	40
1996	18
1997	38
1998	53
1999	19
2000	46
2001	50
2002	4
2003	5
2004	22
2005	8
2006	46
2007	1
2008	167
2009	5
2011	5
2012	2

All-Time Record Progression

1 new records

1 all-time records were set at Ahuatenco between 27 March 2008 and 27 March 2008. Each dot is a new record.

Wettest Day of Each Month

Sep: 114.8 mm (4.5 in)

The wettest day on record for each calendar month at Ahuatenco. The most was 114.8 mm (4.5 in) on 15 September 1972.

Record daily precipitation for each month at Ahuatenco
Month	Record daily precipitation (mm)	Date
Jan	40.9 mm (1.6 in)	18 January 1981
Feb	37.8 mm (1.5 in)	23 February 1981
Mar	29.7 mm (1.2 in)	4 March 1989
Apr	49.3 mm (1.9 in)	13 April 1985
May	55.9 mm (2.2 in)	29 May 1995
Jun	96.8 mm (3.8 in)	30 June 1989
Jul	109.5 mm (4.3 in)	14 July 1985
Aug	72.9 mm (2.9 in)	20 August 1969
Sep	114.8 mm (4.5 in)	15 September 1972
Oct	75.9 mm (3.0 in)	11 October 2011
Nov	33.5 mm (1.3 in)	9 November 1987
Dec	89.9 mm (3.5 in)	5 December 1979

Period of Record Coverage

1969 to 2012

40 years of record at Ahuatenco, 1969 to 2012. 21 years have data for under 90 percent of days and are left out of rankings: 1969, 1970, 1971, 1980, 1985, 1987, 1988, 1989 and others.

Days with data per year at Ahuatenco
Year	Days with data	Share of year	Complete
1969	182	50%	No
1970	31	8%	No
1971	239	65%	No
1972	335	92%	Yes
1973	334	92%	Yes
1974	365	100%	Yes
1975	363	99%	Yes
1976	348	95%	Yes
1977	360	99%	Yes
1978	365	100%	Yes
1979	360	99%	Yes
1980	263	72%	No
1981	364	100%	Yes
1982	359	98%	Yes
1983	330	90%	Yes
1984	363	99%	Yes
1985	241	66%	No
1987	275	75%	No
1988	174	48%	No
1989	235	64%	No
1990	106	29%	No
1993	253	69%	No
1994	287	79%	No
1995	296	81%	No
1996	286	78%	No
1997	335	92%	Yes
1998	298	82%	No
1999	334	92%	Yes
2000	365	100%	Yes
2001	365	100%	Yes
2002	365	100%	Yes
2003	328	90%	No
2004	268	73%	No
2005	359	98%	Yes
2006	280	77%	No
2007	110	30%	No
2008	334	91%	Yes
2009	302	83%	No
2011	92	25%	No
2012	91	25%	No

Latest Records

Latest records at Ahuatenco
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 February 2012	Ahuatenco, MX	daily low max (Tie)	18.9 C (66.0 F)	tie	21 years	2 of 100 (Routine)
10 February 2012	Ahuatenco, MX	daily low max	17.8 C (64.0 F)	2.2 C (4.0 F)	33 years	22 of 100 (Routine)
10 February 2012	Ahuatenco, MX	daily rain	15.0 mm (0.6 in)	7.1 mm (0.28 in)	32 years	20 of 100 (Routine)
9 February 2012	Ahuatenco, MX	daily low max (Tie)	20.0 C (68.0 F)	tie	32 years	3 of 100 (Routine)
7 February 2012	Ahuatenco, MX	daily rain	3.8 mm (0.15 in)	3.8 mm (0.15 in)	40 years	19 of 100 (Routine)
4 February 2012	Ahuatenco, MX	daily low max	18.9 C (66.0 F)	1.1 C (2.0 F)	21 years	14 of 100 (Routine)
2 February 2012	Ahuatenco, MX	daily low max (Tie)	20.0 C (68.0 F)	tie	40 years	4 of 100 (Routine)
30 January 2012	Ahuatenco, MX	daily rain	8.9 mm (0.35 in)	8.9 mm (0.35 in)	41 years	20 of 100 (Routine)
18 January 2012	Ahuatenco, MX	daily high min (Tie)	11.7 C (53.1 F)	tie	13 years	2 of 100 (Routine)
30 November 2011	Ahuatenco, MX	daily low max (Tie)	20.0 C (68.0 F)	tie	32 years	3 of 100 (Routine)
29 November 2011	Ahuatenco, MX	daily low max (Tie)	20.0 C (68.0 F)	tie	33 years	3 of 100 (Routine)
28 November 2011	Ahuatenco, MX	daily low max	17.8 C (64.0 F)	1.1 C (2.0 F)	33 years	20 of 100 (Routine)
28 November 2011	Ahuatenco, MX	daily rain	1.8 mm (0.07 in)	1.8 mm (0.07 in)	40 years	18 of 100 (Routine)
27 November 2011	Ahuatenco, MX	daily rain	7.9 mm (0.31 in)	5.1 mm (0.20 in)	38 years	20 of 100 (Routine)
27 November 2011	Ahuatenco, MX	daily low max (Tie)	18.9 C (66.0 F)	tie	8 years	1 of 100 (Routine)
19 November 2011	Ahuatenco, MX	daily rain	0.8 mm (0.03 in)	0.8 mm (0.03 in)	40 years	17 of 100 (Routine)
11 November 2011	Ahuatenco, MX	daily low max (Tie)	20.0 C (68.0 F)	tie	13 years	2 of 100 (Routine)
10 November 2011	Ahuatenco, MX	daily high max (Tie)	25.0 C (77.0 F)	tie	37 years	3 of 100 (Routine)
6 November 2011	Ahuatenco, MX	daily rain	3.8 mm (0.15 in)	3.8 mm (0.15 in)	40 years	20 of 100 (Routine)
4 November 2011	Ahuatenco, MX	daily low min (Tie)	10.0 C (50.0 F)	tie	38 years	3 of 100 (Routine)

Climate Trend

13 complete years, 1974 to 2005

One stripe for each of 13 complete years at Ahuatenco, 1974 to 2005. Blue stripes are years cooler than the station's own mean of 17.4 C (63.2 F); red stripes are warmer. The coolest year was 2000, at 16.5 C (61.8 F), and the warmest was 1977, at 18.9 C (66.0 F). The strongest colour marks a difference of 1.6 C (2.9 F).

Annual mean temperature at Ahuatenco as warming stripes, 1974 to 2005
Year	Annual mean temperature	Difference from the station mean
1974	17.1 C	-0.27 C
1975	17.4 C	-0.01 C
1977	18.9 C	+1.51 C
1978	17.5 C	+0.10 C
1979	17.3 C	-0.04 C
1981	16.6 C	-0.80 C
1982	18.3 C	+0.93 C
1984	17.7 C	+0.32 C
1997	17.0 C	-0.41 C
2000	16.5 C	-0.82 C
2001	16.7 C	-0.68 C
2002	17.0 C	-0.32 C
2005	17.9 C	+0.50 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 2012

Yearly extremes at Ahuatenco: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	35.6 C (96.1 F)	1971	28.9 C (84.0 F)	40
Coldest night (TNn)	0.6 C (33.1 F)	1993	5.6 C (42.1 F)	40
Wettest day (Rx1day)	114.8 mm (4.5 in)	1972	53.8 mm (2.1 in)	39
Wettest five days (Rx5day)	204.2 mm (8.0 in)	1972	128.3 mm (5.1 in)	39
Longest dry spell (CDD)	242 days	2009	61 days	39

Hottest day (TXx)

The hottest day of the year at Ahuatenco, 1969 to 2012. The record is 35.6 C (96.1 F) in 1971, marked on the chart; the median year is 28.9 C (84.0 F).

Hottest day (TXx) at Ahuatenco by year
Year	Hottest day (TXx)
1969	31.1 C (88.0 F)
1970	26.1 C (79.0 F)
1971	35.6 C (96.1 F)
1972	28.9 C (84.0 F)
1973	30.0 C (86.0 F)
1974	28.9 C (84.0 F)
1975	27.8 C (82.0 F)
1976	33.9 C (93.0 F)
1977	34.4 C (93.9 F)
1978	28.9 C (84.0 F)
1979	26.1 C (79.0 F)
1980	33.9 C (93.0 F)
1981	26.7 C (80.1 F)
1982	30.6 C (87.1 F)
1983	31.7 C (89.1 F)
1984	32.8 C (91.0 F)
1985	30.0 C (86.0 F)
1987	30.0 C (86.0 F)
1988	25.6 C (78.1 F)
1989	28.9 C (84.0 F)
1990	27.8 C (82.0 F)
1993	35.0 C (95.0 F)
1994	35.6 C (96.1 F)
1995	35.6 C (96.1 F)
1996	28.9 C (84.0 F)
1997	27.8 C (82.0 F)
1998	28.9 C (84.0 F)
1999	30.6 C (87.1 F)
2000	28.9 C (84.0 F)
2001	27.8 C (82.0 F)
2002	27.8 C (82.0 F)
2003	27.8 C (82.0 F)
2004	27.8 C (82.0 F)
2005	27.8 C (82.0 F)
2006	26.7 C (80.1 F)
2007	28.9 C (84.0 F)
2008	35.0 C (95.0 F)
2009	32.8 C (91.0 F)
2011	25.0 C (77.0 F)
2012	25.6 C (78.1 F)

Coldest night (TNn)

The coldest night of the year at Ahuatenco, 1969 to 2012. The record is 0.6 C (33.1 F) in 1993, marked on the chart; the median year is 5.6 C (42.1 F).

Coldest night (TNn) at Ahuatenco by year
Year	Coldest night (TNn)
1969	10.0 C (50.0 F)
1970	5.6 C (42.1 F)
1971	8.9 C (48.0 F)
1972	7.8 C (46.0 F)
1973	7.8 C (46.0 F)
1974	7.8 C (46.0 F)
1975	7.8 C (46.0 F)
1976	5.0 C (41.0 F)
1977	8.9 C (48.0 F)
1978	6.7 C (44.1 F)
1979	7.2 C (45.0 F)
1980	5.6 C (42.1 F)
1981	5.0 C (41.0 F)
1982	5.0 C (41.0 F)
1983	3.9 C (39.0 F)
1984	4.4 C (39.9 F)
1985	6.7 C (44.1 F)
1987	6.7 C (44.1 F)
1988	2.8 C (37.0 F)
1989	1.7 C (35.1 F)
1990	5.0 C (41.0 F)
1993	0.6 C (33.1 F)
1994	5.6 C (42.1 F)
1995	2.8 C (37.0 F)
1996	5.0 C (41.0 F)
1997	0.6 C (33.1 F)
1998	5.6 C (42.1 F)
1999	3.9 C (39.0 F)
2000	5.0 C (41.0 F)
2001	5.6 C (42.1 F)
2002	5.6 C (42.1 F)
2003	5.6 C (42.1 F)
2004	5.0 C (41.0 F)
2005	7.8 C (46.0 F)
2006	3.9 C (39.0 F)
2007	7.8 C (46.0 F)
2008	5.0 C (41.0 F)
2009	5.0 C (41.0 F)
2011	6.7 C (44.1 F)
2012	5.6 C (42.1 F)

Wettest day (Rx1day)

The wettest day of the year at Ahuatenco, 1969 to 2012. The record is 114.8 mm (4.5 in) in 1972, marked on the chart; the median year is 53.8 mm (2.1 in).

Wettest day (Rx1day) at Ahuatenco by year
Year	Wettest day (Rx1day)
1969	72.9 mm (2.9 in)
1970	0.0 mm (0.00 in)
1971	74.9 mm (2.9 in)
1972	114.8 mm (4.5 in)
1973	82.8 mm (3.3 in)
1974	53.8 mm (2.1 in)
1975	47.0 mm (1.9 in)
1976	72.9 mm (2.9 in)
1977	52.8 mm (2.1 in)
1978	95.0 mm (3.7 in)
1979	89.9 mm (3.5 in)
1980	63.8 mm (2.5 in)
1981	45.0 mm (1.8 in)
1982	82.8 mm (3.3 in)
1983	57.2 mm (2.3 in)
1984	69.9 mm (2.8 in)
1985	109.5 mm (4.3 in)
1987	79.8 mm (3.1 in)
1988	65.0 mm (2.6 in)
1989	96.8 mm (3.8 in)
1990	15.7 mm (0.6 in)
1993	46.0 mm (1.8 in)
1994	69.9 mm (2.8 in)
1995	55.9 mm (2.2 in)
1996	66.8 mm (2.6 in)
1997	24.9 mm (1.0 in)
1998	35.8 mm (1.4 in)
1999	37.8 mm (1.5 in)
2000	39.9 mm (1.6 in)
2001	24.9 mm (1.0 in)
2002	39.9 mm (1.6 in)
2003	41.9 mm (1.6 in)
2004	36.8 mm (1.4 in)
2005	31.8 mm (1.3 in)
2006	41.9 mm (1.6 in)
2007	49.8 mm (2.0 in)
2008	n/a
2009	7.9 mm (0.31 in)
2011	75.9 mm (3.0 in)
2012	15.0 mm (0.6 in)

Wettest five days (Rx5day)

The wettest five days of the year at Ahuatenco, 1969 to 2012. The record is 204.2 mm (8.0 in) in 1972, marked on the chart; the median year is 128.3 mm (5.1 in).

Wettest five days (Rx5day) at Ahuatenco by year
Year	Wettest five days (Rx5day)
1969	173.2 mm (6.8 in)
1970	0.0 mm (0.00 in)
1971	134.2 mm (5.3 in)
1972	204.2 mm (8.0 in)
1973	163.3 mm (6.4 in)
1974	113.2 mm (4.5 in)
1975	100.4 mm (4.0 in)
1976	158.6 mm (6.2 in)
1977	144.2 mm (5.7 in)
1978	158.6 mm (6.2 in)
1979	183.9 mm (7.2 in)
1980	130.9 mm (5.2 in)
1981	142.6 mm (5.6 in)
1982	189.1 mm (7.4 in)
1983	148.6 mm (5.9 in)
1984	166.4 mm (6.6 in)
1985	158.9 mm (6.3 in)
1987	128.3 mm (5.1 in)
1988	154.2 mm (6.1 in)
1989	120.2 mm (4.7 in)
1990	25.6 mm (1.0 in)
1993	109.8 mm (4.3 in)
1994	109.6 mm (4.3 in)
1995	102.6 mm (4.0 in)
1996	99.3 mm (3.9 in)
1997	75.0 mm (3.0 in)
1998	107.1 mm (4.2 in)
1999	131.4 mm (5.2 in)
2000	104.4 mm (4.1 in)
2001	66.2 mm (2.6 in)
2002	162.4 mm (6.4 in)
2003	143.5 mm (5.6 in)
2004	122.1 mm (4.8 in)
2005	117.4 mm (4.6 in)
2006	151.5 mm (6.0 in)
2007	127.3 mm (5.0 in)
2008	n/a
2009	7.9 mm (0.31 in)
2011	103.6 mm (4.1 in)
2012	19.8 mm (0.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Ahuatenco, 1969 to 2012. The record is 242 days in 2009, marked on the chart; the median year is 61 days.

Longest dry spell (CDD) at Ahuatenco by year
Year	Longest dry spell (CDD)
1969	31 days
1970	31 days
1971	53 days
1972	69 days
1973	57 days
1974	74 days
1975	108 days
1976	132 days
1977	82 days
1978	43 days
1979	57 days
1980	56 days
1981	61 days
1982	55 days
1983	72 days
1984	69 days
1985	98 days
1987	51 days
1988	31 days
1989	26 days
1990	52 days
1993	31 days
1994	122 days
1995	58 days
1996	58 days
1997	43 days
1998	61 days
1999	93 days
2000	78 days
2001	138 days
2002	84 days
2003	92 days
2004	71 days
2005	127 days
2006	138 days
2007	93 days
2008	n/a
2009	242 days
2011	33 days
2012	48 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.

Download the Data

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