San Mateo Etlatongo Weather Records (MXN00020265)

Record envelope, standing records and threshold days for San Mateo Etlatongo (MXN00020265), Mexico, with 37 years of record.

Key Facts for San Mateo Etlatongo

San Mateo Etlatongo (MXN00020265) is a weather station in Mexico at 17.42 latitude and -97.27 longitude, 2,033 m (6,669 ft) above sea level.
The station reports from 1975 to 2011, 37 years of record.
1,464 records set at San Mateo Etlatongo still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Mexico, 17.42 latitude, -97.27 longitude.
Elevation: 2,033 m (6,669 ft).
Period of record: 1975 to 2011, 37 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 San Mateo Etlatongo. 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 Mateo Etlatongo, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	31.7 C (89.1 F)	-6.1 C (21.0 F)	n/a	n/a
Feb	32.8 C (91.0 F)	-4.4 C (24.1 F)	n/a	n/a
Mar	32.8 C (91.0 F)	0.0 C (32.0 F)	n/a	n/a
Apr	38.9 C (102.0 F)	1.7 C (35.1 F)	n/a	n/a
May	36.7 C (98.1 F)	1.7 C (35.1 F)	n/a	n/a
Jun	33.9 C (93.0 F)	2.8 C (37.0 F)	n/a	n/a
Jul	35.0 C (95.0 F)	0.6 C (33.1 F)	n/a	n/a
Aug	33.9 C (93.0 F)	3.9 C (39.0 F)	n/a	n/a
Sep	33.9 C (93.0 F)	3.9 C (39.0 F)	n/a	n/a
Oct	30.6 C (87.1 F)	-2.2 C (28.0 F)	n/a	n/a
Nov	35.0 C (95.0 F)	0.0 C (32.0 F)	n/a	n/a
Dec	31.7 C (89.1 F)	-5.0 C (23.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at San Mateo Etlatongo still stand. 2000 holds the most, with 164.

Standing records at San Mateo Etlatongo by the year they were set
Year set	Standing records
1975	31
1976	67
1977	34
1978	44
1979	55
1980	33
1981	75
1982	38
1983	39
1984	44
1985	40
1986	102
1987	25
1988	35
1989	42
1990	24
1991	77
1992	48
2000	164
2001	34
2002	40
2003	29
2004	23
2005	77
2006	73
2007	85
2008	42
2009	13
2010	31

Wettest Day of Each Month

Sep: 102.4 mm (4.0 in)

The wettest day on record for each calendar month at San Mateo Etlatongo. The most was 102.4 mm (4.0 in) on 11 September 2001.

Record daily precipitation for each month at San Mateo Etlatongo
Month	Record daily precipitation (mm)	Date
Jan	20.8 mm (0.8 in)	31 January 1992
Feb	29.0 mm (1.1 in)	25 February 1983
Mar	39.9 mm (1.6 in)	28 March 2004
Apr	56.4 mm (2.2 in)	19 April 2009
May	77.0 mm (3.0 in)	27 May 2000
Jun	80.8 mm (3.2 in)	16 June 2000
Jul	62.0 mm (2.4 in)	22 July 2007
Aug	62.0 mm (2.4 in)	26 August 1981
Sep	102.4 mm (4.0 in)	11 September 2001
Oct	88.4 mm (3.5 in)	9 October 2002
Nov	51.8 mm (2.0 in)	29 November 1983
Dec	23.9 mm (0.9 in)	30 December 1986

Period of Record Coverage

1975 to 2011

30 years of record at San Mateo Etlatongo, 1975 to 2011. 6 years have data for under 90 percent of days and are left out of rankings: 1975, 1985, 1988, 2003, 2007, 2011.

Days with data per year at San Mateo Etlatongo
Year	Days with data	Share of year	Complete
1975	92	25%	No
1976	366	100%	Yes
1977	335	92%	Yes
1978	365	100%	Yes
1979	337	92%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	365	100%	Yes
1984	366	100%	Yes
1985	304	83%	No
1986	334	92%	Yes
1987	365	100%	Yes
1988	305	83%	No
1989	363	99%	Yes
1990	363	99%	Yes
1991	332	91%	Yes
1992	334	91%	Yes
2000	348	95%	Yes
2001	365	100%	Yes
2002	365	100%	Yes
2003	212	58%	No
2004	366	100%	Yes
2005	365	100%	Yes
2006	365	100%	Yes
2007	304	83%	No
2008	366	100%	Yes
2009	365	100%	Yes
2010	365	100%	Yes
2011	28	8%	No

Latest Records

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

Climate Trend

18 complete years, 1976 to 2010

One stripe for each of 18 complete years at San Mateo Etlatongo, 1976 to 2010. Blue stripes are years cooler than the station's own mean of 16.6 C (62.0 F); red stripes are warmer. The coolest year was 1981, at 15.2 C (59.4 F), and the warmest was 2006, at 18.7 C (65.7 F). The strongest colour marks a difference of 2.1 C (3.8 F).

Annual mean temperature at San Mateo Etlatongo as warming stripes, 1976 to 2010
Year	Annual mean temperature	Difference from the station mean
1976	15.3 C	-1.35 C
1978	16.0 C	-0.69 C
1980	15.8 C	-0.88 C
1981	15.2 C	-1.43 C
1982	15.6 C	-1.01 C
1983	15.9 C	-0.78 C
1984	15.8 C	-0.82 C
1987	16.1 C	-0.55 C
1989	15.4 C	-1.21 C
1990	16.1 C	-0.56 C
2001	17.1 C	+0.42 C
2002	17.6 C	+0.97 C
2004	17.3 C	+0.65 C
2005	18.2 C	+1.60 C
2006	18.7 C	+2.06 C
2008	18.2 C	+1.60 C
2009	18.0 C	+1.31 C
2010	17.3 C	+0.66 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

1975 to 2011

Yearly extremes at San Mateo Etlatongo: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	38.9 C (102.0 F)	2003	31.7 C (89.1 F)	30
Coldest night (TNn)	-6.1 C (21.0 F)	1986	0.0 C (32.0 F)	30
Wettest day (Rx1day)	102.4 mm (4.0 in)	2001	50.8 mm (2.0 in)	30
Wettest five days (Rx5day)	288.4 mm (11.4 in)	2000	94.0 mm (3.7 in)	30
Longest dry spell (CDD)	103 days	2001	62 days	30

Hottest day (TXx)

The hottest day of the year at San Mateo Etlatongo, 1975 to 2011. The record is 38.9 C (102.0 F) in 2003, marked on the chart; the median year is 31.7 C (89.1 F).

Hottest day (TXx) at San Mateo Etlatongo by year
Year	Hottest day (TXx)
1975	30.0 C (86.0 F)
1976	28.3 C (82.9 F)
1977	30.0 C (86.0 F)
1978	31.7 C (89.1 F)
1979	28.9 C (84.0 F)
1980	30.0 C (86.0 F)
1981	27.8 C (82.0 F)
1982	30.0 C (86.0 F)
1983	32.8 C (91.0 F)
1984	31.7 C (89.1 F)
1985	28.9 C (84.0 F)
1986	31.7 C (89.1 F)
1987	30.6 C (87.1 F)
1988	31.7 C (89.1 F)
1989	31.7 C (89.1 F)
1990	30.0 C (86.0 F)
1991	30.0 C (86.0 F)
1992	30.0 C (86.0 F)
2000	35.0 C (95.0 F)
2001	32.8 C (91.0 F)
2002	35.0 C (95.0 F)
2003	38.9 C (102.0 F)
2004	32.8 C (91.0 F)
2005	37.8 C (100.0 F)
2006	32.8 C (91.0 F)
2007	35.6 C (96.1 F)
2008	33.9 C (93.0 F)
2009	35.0 C (95.0 F)
2010	36.7 C (98.1 F)
2011	27.8 C (82.0 F)

Coldest night (TNn)

The coldest night of the year at San Mateo Etlatongo, 1975 to 2011. The record is -6.1 C (21.0 F) in 1986, marked on the chart; the median year is 0.0 C (32.0 F).

Coldest night (TNn) at San Mateo Etlatongo by year
Year	Coldest night (TNn)
1975	0.0 C (32.0 F)
1976	-4.4 C (24.1 F)
1977	0.0 C (32.0 F)
1978	0.6 C (33.1 F)
1979	1.7 C (35.1 F)
1980	-5.0 C (23.0 F)
1981	0.0 C (32.0 F)
1982	0.6 C (33.1 F)
1983	-0.6 C (30.9 F)
1984	0.0 C (32.0 F)
1985	0.6 C (33.1 F)
1986	-6.1 C (21.0 F)
1987	-1.1 C (30.0 F)
1988	0.0 C (32.0 F)
1989	-2.2 C (28.0 F)
1990	-3.3 C (26.1 F)
1991	0.0 C (32.0 F)
1992	0.0 C (32.0 F)
2000	0.0 C (32.0 F)
2001	-1.1 C (30.0 F)
2002	0.0 C (32.0 F)
2003	0.0 C (32.0 F)
2004	0.0 C (32.0 F)
2005	0.0 C (32.0 F)
2006	0.0 C (32.0 F)
2007	0.6 C (33.1 F)
2008	0.6 C (33.1 F)
2009	0.6 C (33.1 F)
2010	1.7 C (35.1 F)
2011	0.6 C (33.1 F)

Wettest day (Rx1day)

The wettest day of the year at San Mateo Etlatongo, 1975 to 2011. The record is 102.4 mm (4.0 in) in 2001, marked on the chart; the median year is 50.8 mm (2.0 in).

Wettest day (Rx1day) at San Mateo Etlatongo by year
Year	Wettest day (Rx1day)
1975	7.9 mm (0.31 in)
1976	46.7 mm (1.8 in)
1977	39.9 mm (1.6 in)
1978	55.4 mm (2.2 in)
1979	50.3 mm (2.0 in)
1980	60.5 mm (2.4 in)
1981	62.0 mm (2.4 in)
1982	39.9 mm (1.6 in)
1983	51.8 mm (2.0 in)
1984	50.8 mm (2.0 in)
1985	48.8 mm (1.9 in)
1986	53.8 mm (2.1 in)
1987	45.0 mm (1.8 in)
1988	50.8 mm (2.0 in)
1989	63.0 mm (2.5 in)
1990	40.9 mm (1.6 in)
1991	66.3 mm (2.6 in)
1992	31.8 mm (1.3 in)
2000	80.8 mm (3.2 in)
2001	102.4 mm (4.0 in)
2002	88.4 mm (3.5 in)
2003	32.8 mm (1.3 in)
2004	43.9 mm (1.7 in)
2005	43.9 mm (1.7 in)
2006	51.8 mm (2.0 in)
2007	62.0 mm (2.4 in)
2008	53.8 mm (2.1 in)
2009	79.8 mm (3.1 in)
2010	37.8 mm (1.5 in)
2011	0.0 mm (0.00 in)

Wettest five days (Rx5day)

The wettest five days of the year at San Mateo Etlatongo, 1975 to 2011. The record is 288.4 mm (11.4 in) in 2000, marked on the chart; the median year is 94.0 mm (3.7 in).

Wettest five days (Rx5day) at San Mateo Etlatongo by year
Year	Wettest five days (Rx5day)
1975	7.9 mm (0.31 in)
1976	83.9 mm (3.3 in)
1977	98.3 mm (3.9 in)
1978	90.6 mm (3.6 in)
1979	101.9 mm (4.0 in)
1980	102.6 mm (4.0 in)
1981	109.5 mm (4.3 in)
1982	91.4 mm (3.6 in)
1983	109.2 mm (4.3 in)
1984	114.3 mm (4.5 in)
1985	74.9 mm (2.9 in)
1986	92.9 mm (3.7 in)
1987	88.7 mm (3.5 in)
1988	144.6 mm (5.7 in)
1989	96.1 mm (3.8 in)
1990	45.0 mm (1.8 in)
1991	158.8 mm (6.3 in)
1992	62.2 mm (2.4 in)
2000	288.4 mm (11.4 in)
2001	132.4 mm (5.2 in)
2002	119.8 mm (4.7 in)
2003	59.0 mm (2.3 in)
2004	83.3 mm (3.3 in)
2005	71.1 mm (2.8 in)
2006	142.2 mm (5.6 in)
2007	92.5 mm (3.6 in)
2008	95.0 mm (3.7 in)
2009	137.2 mm (5.4 in)
2010	91.2 mm (3.6 in)
2011	0.0 mm (0.00 in)

Longest dry spell (CDD)

The longest dry spell of the year at San Mateo Etlatongo, 1975 to 2011. The record is 103 days in 2001, marked on the chart; the median year is 62 days.

Longest dry spell (CDD) at San Mateo Etlatongo by year
Year	Longest dry spell (CDD)
1975	51 days
1976	58 days
1977	63 days
1978	52 days
1979	31 days
1980	65 days
1981	34 days
1982	56 days
1983	72 days
1984	49 days
1985	59 days
1986	47 days
1987	95 days
1988	64 days
1989	59 days
1990	59 days
1991	64 days
1992	55 days
2000	73 days
2001	103 days
2002	71 days
2003	59 days
2004	66 days
2005	81 days
2006	83 days
2007	84 days
2008	85 days
2009	99 days
2010	61 days
2011	28 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 San Mateo Etlatongo standing records by year: CSV or JSON. Field meanings are on the data page.
Data for San Mateo Etlatongo 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 2026-10-16 (16 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).