Tepoztlan E-12 Weather Records (MXN00017049)

Record envelope, standing records and threshold days for Tepoztlan E-12 (MXN00017049), Mexico, with 37 years of record.

Key Facts for Tepoztlan E-12

Tepoztlan E-12 (MXN00017049) is a weather station in Mexico at 18.98 latitude and -99.08 longitude, 1,716 m (5,629 ft) above sea level.
The station reports from 1976 to 2012, 37 years of record.
1,464 records set at Tepoztlan E-12 still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Mexico, 18.98 latitude, -99.08 longitude.
Elevation: 1,716 m (5,629 ft).
Period of record: 1976 to 2012, 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 Tepoztlan E-12. 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 Tepoztlan E-12, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	32.8 C (91.0 F)	1.7 C (35.1 F)	n/a	n/a
Feb	34.4 C (93.9 F)	5.0 C (41.0 F)	n/a	n/a
Mar	35.6 C (96.1 F)	4.4 C (39.9 F)	n/a	n/a
Apr	37.2 C (99.0 F)	6.1 C (43.0 F)	n/a	n/a
May	38.9 C (102.0 F)	7.8 C (46.0 F)	n/a	n/a
Jun	35.0 C (95.0 F)	10.0 C (50.0 F)	n/a	n/a
Jul	33.9 C (93.0 F)	10.0 C (50.0 F)	n/a	n/a
Aug	30.0 C (86.0 F)	8.9 C (48.0 F)	n/a	n/a
Sep	30.0 C (86.0 F)	8.9 C (48.0 F)	n/a	n/a
Oct	32.2 C (90.0 F)	7.8 C (46.0 F)	n/a	n/a
Nov	32.8 C (91.0 F)	4.4 C (39.9 F)	n/a	n/a
Dec	31.1 C (88.0 F)	5.6 C (42.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Tepoztlan E-12 still stand. 1992 holds the most, with 205.

Standing records at Tepoztlan E-12 by the year they were set
Year set	Standing records
1981	53
1982	56
1983	128
1985	9
1986	32
1987	31
1988	92
1989	6
1992	205
1993	50
1994	71
1995	84
1996	60
1997	97
1998	98
2000	21
2002	43
2003	73
2004	17
2005	67
2006	30
2007	22
2008	29
2009	18
2010	47
2011	16
2012	9

Wettest Day of Each Month

Jun: 182.4 mm (7.2 in)

The wettest day on record for each calendar month at Tepoztlan E-12. The most was 182.4 mm (7.2 in) on 30 June 2011.

Record daily precipitation for each month at Tepoztlan E-12
Month	Record daily precipitation (mm)	Date
Jan	57.9 mm (2.3 in)	30 January 1995
Feb	84.1 mm (3.3 in)	4 February 2010
Mar	46.5 mm (1.8 in)	11 March 2000
Apr	30.5 mm (1.2 in)	3 April 1986
May	53.8 mm (2.1 in)	27 May 2000
Jun	182.4 mm (7.2 in)	30 June 2011
Jul	99.8 mm (3.9 in)	13 July 1988
Aug	140.0 mm (5.5 in)	27 August 2011
Sep	100.8 mm (4.0 in)	14 September 2002
Oct	100.6 mm (4.0 in)	10 October 2011
Nov	42.7 mm (1.7 in)	1 November 1993
Dec	39.1 mm (1.5 in)	30 December 1995

Period of Record Coverage

1981 to 2012

27 years of record at Tepoztlan E-12, 1981 to 2012. 11 years have data for under 90 percent of days and are left out of rankings: 1981, 1985, 1986, 1987, 1988, 1989, 1992, 1998 and others.

Days with data per year at Tepoztlan E-12
Year	Days with data	Share of year	Complete
1981	146	40%	No
1982	361	99%	Yes
1983	343	94%	Yes
1985	76	21%	No
1986	150	41%	No
1987	184	50%	No
1988	234	64%	No
1989	31	8%	No
1992	244	67%	No
1993	365	100%	Yes
1994	365	100%	Yes
1995	334	92%	Yes
1996	366	100%	Yes
1997	365	100%	Yes
1998	304	83%	No
2000	183	50%	No
2002	365	100%	Yes
2003	365	100%	Yes
2004	305	83%	No
2005	365	100%	Yes
2006	365	100%	Yes
2007	365	100%	Yes
2008	366	100%	Yes
2009	365	100%	Yes
2010	365	100%	Yes
2011	337	92%	Yes
2012	152	42%	No

Latest Records

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

Climate Trend

14 complete years, 1982 to 2010

One stripe for each of 14 complete years at Tepoztlan E-12, 1982 to 2010. Blue stripes are years cooler than the station's own mean of 20.7 C (69.3 F); red stripes are warmer. The coolest year was 1983, at 19.2 C (66.6 F), and the warmest was 1997, at 21.2 C (70.2 F). The strongest colour marks a difference of 1.5 C (2.7 F).

Annual mean temperature at Tepoztlan E-12 as warming stripes, 1982 to 2010
Year	Annual mean temperature	Difference from the station mean
1982	19.9 C	-0.84 C
1983	19.2 C	-1.48 C
1993	20.4 C	-0.34 C
1994	21.2 C	+0.50 C
1996	21.0 C	+0.32 C
1997	21.2 C	+0.54 C
2002	20.9 C	+0.23 C
2003	21.2 C	+0.45 C
2005	21.1 C	+0.39 C
2006	20.8 C	+0.09 C
2007	20.5 C	-0.20 C
2008	21.0 C	+0.29 C
2009	21.0 C	+0.34 C
2010	20.4 C	-0.27 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

1976 to 2012

Yearly extremes at Tepoztlan E-12: 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)	2004	35.0 C (95.0 F)	27
Coldest night (TNn)	1.7 C (35.1 F)	1986	6.7 C (44.1 F)	27
Wettest day (Rx1day)	182.4 mm (7.2 in)	2011	69.6 mm (2.7 in)	29
Wettest five days (Rx5day)	290.3 mm (11.4 in)	2011	132.9 mm (5.2 in)	29
Longest dry spell (CDD)	132 days	1988	58 days	29

Hottest day (TXx)

The hottest day of the year at Tepoztlan E-12, 1976 to 2012. The record is 38.9 C (102.0 F) in 2004, marked on the chart; the median year is 35.0 C (95.0 F).

Hottest day (TXx) at Tepoztlan E-12 by year
Year	Hottest day (TXx)
1976	n/a
1977	n/a
1981	27.8 C (82.0 F)
1982	35.0 C (95.0 F)
1983	35.0 C (95.0 F)
1985	27.8 C (82.0 F)
1986	31.7 C (89.1 F)
1987	34.4 C (93.9 F)
1988	35.0 C (95.0 F)
1989	30.0 C (86.0 F)
1992	26.7 C (80.1 F)
1993	33.9 C (93.0 F)
1994	35.0 C (95.0 F)
1995	35.0 C (95.0 F)
1996	35.0 C (95.0 F)
1997	35.0 C (95.0 F)
1998	36.1 C (97.0 F)
2000	35.6 C (96.1 F)
2002	35.0 C (95.0 F)
2003	35.6 C (96.1 F)
2004	38.9 C (102.0 F)
2005	37.2 C (99.0 F)
2006	35.6 C (96.1 F)
2007	35.0 C (95.0 F)
2008	37.8 C (100.0 F)
2009	33.9 C (93.0 F)
2010	35.0 C (95.0 F)
2011	35.6 C (96.1 F)
2012	35.0 C (95.0 F)

Coldest night (TNn)

The coldest night of the year at Tepoztlan E-12, 1976 to 2012. The record is 1.7 C (35.1 F) in 1986, marked on the chart; the median year is 6.7 C (44.1 F).

Coldest night (TNn) at Tepoztlan E-12 by year
Year	Coldest night (TNn)
1976	n/a
1977	n/a
1981	4.4 C (39.9 F)
1982	6.1 C (43.0 F)
1983	4.4 C (39.9 F)
1985	7.8 C (46.0 F)
1986	1.7 C (35.1 F)
1987	6.7 C (44.1 F)
1988	2.8 C (37.0 F)
1989	3.3 C (37.9 F)
1992	8.3 C (46.9 F)
1993	8.9 C (48.0 F)
1994	8.9 C (48.0 F)
1995	7.8 C (46.0 F)
1996	6.7 C (44.1 F)
1997	7.2 C (45.0 F)
1998	7.8 C (46.0 F)
2000	8.9 C (48.0 F)
2002	5.0 C (41.0 F)
2003	6.7 C (44.1 F)
2004	6.1 C (43.0 F)
2005	5.6 C (42.1 F)
2006	5.6 C (42.1 F)
2007	7.2 C (45.0 F)
2008	5.6 C (42.1 F)
2009	8.9 C (48.0 F)
2010	5.6 C (42.1 F)
2011	8.9 C (48.0 F)
2012	8.9 C (48.0 F)

Wettest day (Rx1day)

The wettest day of the year at Tepoztlan E-12, 1976 to 2012. The record is 182.4 mm (7.2 in) in 2011, marked on the chart; the median year is 69.6 mm (2.7 in).

Wettest day (Rx1day) at Tepoztlan E-12 by year
Year	Wettest day (Rx1day)
1976	89.9 mm (3.5 in)
1977	64.8 mm (2.6 in)
1981	0.3 mm (0.01 in)
1982	69.9 mm (2.8 in)
1983	52.1 mm (2.1 in)
1985	86.4 mm (3.4 in)
1986	30.5 mm (1.2 in)
1987	43.2 mm (1.7 in)
1988	99.8 mm (3.9 in)
1989	0.0 mm (0.00 in)
1992	81.8 mm (3.2 in)
1993	70.6 mm (2.8 in)
1994	61.7 mm (2.4 in)
1995	57.9 mm (2.3 in)
1996	80.8 mm (3.2 in)
1997	49.8 mm (2.0 in)
1998	69.6 mm (2.7 in)
2000	60.7 mm (2.4 in)
2002	100.8 mm (4.0 in)
2003	61.7 mm (2.4 in)
2004	74.9 mm (2.9 in)
2005	88.4 mm (3.5 in)
2006	57.7 mm (2.3 in)
2007	64.3 mm (2.5 in)
2008	138.9 mm (5.5 in)
2009	98.0 mm (3.9 in)
2010	84.8 mm (3.3 in)
2011	182.4 mm (7.2 in)
2012	19.8 mm (0.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Tepoztlan E-12, 1976 to 2012. The record is 290.3 mm (11.4 in) in 2011, marked on the chart; the median year is 132.9 mm (5.2 in).

Wettest five days (Rx5day) at Tepoztlan E-12 by year
Year	Wettest five days (Rx5day)
1976	217.0 mm (8.5 in)
1977	132.9 mm (5.2 in)
1981	0.3 mm (0.01 in)
1982	164.4 mm (6.5 in)
1983	130.9 mm (5.2 in)
1985	129.5 mm (5.1 in)
1986	39.1 mm (1.5 in)
1987	131.9 mm (5.2 in)
1988	268.6 mm (10.6 in)
1989	0.0 mm (0.00 in)
1992	130.5 mm (5.1 in)
1993	157.3 mm (6.2 in)
1994	110.0 mm (4.3 in)
1995	109.2 mm (4.3 in)
1996	166.9 mm (6.6 in)
1997	134.6 mm (5.3 in)
1998	212.6 mm (8.4 in)
2000	98.3 mm (3.9 in)
2002	208.3 mm (8.2 in)
2003	173.2 mm (6.8 in)
2004	108.6 mm (4.3 in)
2005	135.8 mm (5.3 in)
2006	126.3 mm (5.0 in)
2007	129.4 mm (5.1 in)
2008	213.5 mm (8.4 in)
2009	177.1 mm (7.0 in)
2010	191.0 mm (7.5 in)
2011	290.3 mm (11.4 in)
2012	37.4 mm (1.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Tepoztlan E-12, 1976 to 2012. The record is 132 days in 1988, marked on the chart; the median year is 58 days.

Longest dry spell (CDD) at Tepoztlan E-12 by year
Year	Longest dry spell (CDD)
1976	44 days
1977	26 days
1981	61 days
1982	53 days
1983	84 days
1985	36 days
1986	92 days
1987	52 days
1988	132 days
1989	31 days
1992	28 days
1993	77 days
1994	83 days
1995	51 days
1996	67 days
1997	73 days
1998	127 days
2000	59 days
2002	49 days
2003	88 days
2004	58 days
2005	72 days
2006	111 days
2007	45 days
2008	101 days
2009	34 days
2010	58 days
2011	46 days
2012	31 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 Tepoztlan E-12 standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Tepoztlan E-12 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 2026-10-14 (14 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).