Tepetatillo Weather Records (MXN00001085)

Record envelope, standing records and threshold days for Tepetatillo (MXN00001085), Mexico, with 35 years of record.

Key Facts for Tepetatillo

Tepetatillo (MXN00001085) is a weather station in Mexico at 22.08 latitude and -102.17 longitude, 2,039 m (6,691 ft) above sea level.
The station reports from 1979 to 2013, 35 years of record.
1,464 records set at Tepetatillo still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.

About the Station

Location: Mexico, 22.08 latitude, -102.17 longitude.
Elevation: 2,039 m (6,691 ft).
Period of record: 1979 to 2013, 35 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 Tepetatillo. 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 Tepetatillo, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	27.8 C (82.0 F)	-8.3 C (17.1 F)	n/a	n/a
Feb	30.6 C (87.1 F)	-8.3 C (17.1 F)	n/a	n/a
Mar	33.9 C (93.0 F)	-5.0 C (23.0 F)	n/a	n/a
Apr	35.6 C (96.1 F)	-2.2 C (28.0 F)	n/a	n/a
May	37.8 C (100.0 F)	0.6 C (33.1 F)	n/a	n/a
Jun	35.6 C (96.1 F)	3.9 C (39.0 F)	n/a	n/a
Jul	35.6 C (96.1 F)	5.6 C (42.1 F)	n/a	n/a
Aug	32.8 C (91.0 F)	5.0 C (41.0 F)	n/a	n/a
Sep	31.7 C (89.1 F)	2.8 C (37.0 F)	n/a	n/a
Oct	30.6 C (87.1 F)	-5.0 C (23.0 F)	n/a	n/a
Nov	28.9 C (84.0 F)	-8.3 C (17.1 F)	n/a	n/a
Dec	26.7 C (80.1 F)	-9.4 C (15.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Tepetatillo still stand. 2011 holds the most, with 93.

Standing records at Tepetatillo by the year they were set
Year set	Standing records
1979	12
1980	41
1981	46
1982	55
1983	49
1984	46
1985	43
1986	47
1987	55
1988	54
1989	47
1990	55
1994	23
1995	31
1996	15
1997	40
1998	26
1999	69
2000	15
2001	24
2002	31
2003	49
2004	91
2005	75
2006	66
2007	34
2008	50
2009	27
2010	72
2011	93
2012	51
2013	32

Wettest Day of Each Month

Jun: 85.3 mm (3.4 in)

The wettest day on record for each calendar month at Tepetatillo. The most was 85.3 mm (3.4 in) on 13 June 2013.

Record daily precipitation for each month at Tepetatillo
Month	Record daily precipitation (mm)	Date
Jan	52.8 mm (2.1 in)	1 January 2013
Feb	39.9 mm (1.6 in)	2 February 2010
Mar	24.9 mm (1.0 in)	2 March 2001
Apr	14.0 mm (0.6 in)	23 April 1996
May	34.8 mm (1.4 in)	27 May 1983
Jun	85.3 mm (3.4 in)	13 June 2013
Jul	62.0 mm (2.4 in)	12 July 1983
Aug	52.8 mm (2.1 in)	22 August 1999
Sep	67.8 mm (2.7 in)	2 September 2007
Oct	48.8 mm (1.9 in)	10 October 2002
Nov	29.0 mm (1.1 in)	3 November 2002
Dec	39.9 mm (1.6 in)	2 December 1979

Period of Record Coverage

1979 to 2013

32 years of record at Tepetatillo, 1979 to 2013. 9 years have data for under 90 percent of days and are left out of rankings: 1979, 1980, 1981, 1982, 1986, 1987, 1988, 2009 and others.

Days with data per year at Tepetatillo
Year	Days with data	Share of year	Complete
1979	83	23%	No
1980	242	66%	No
1981	247	68%	No
1982	303	83%	No
1983	365	100%	Yes
1984	366	100%	Yes
1985	365	100%	Yes
1986	181	50%	No
1987	326	89%	No
1988	305	83%	No
1989	335	92%	Yes
1990	365	100%	Yes
1994	365	100%	Yes
1995	365	100%	Yes
1996	366	100%	Yes
1997	365	100%	Yes
1998	364	100%	Yes
1999	365	100%	Yes
2000	366	100%	Yes
2001	365	100%	Yes
2002	365	100%	Yes
2003	365	100%	Yes
2004	366	100%	Yes
2005	365	100%	Yes
2006	365	100%	Yes
2007	365	100%	Yes
2008	366	100%	Yes
2009	304	83%	No
2010	364	100%	Yes
2011	364	100%	Yes
2012	364	99%	Yes
2013	273	75%	No

Latest Records

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

Climate Trend

22 complete years, 1983 to 2012

One stripe for each of 22 complete years at Tepetatillo, 1983 to 2012. Blue stripes are years cooler than the station's own mean of 16.0 C (60.7 F); red stripes are warmer. The coolest year was 2004, at 13.8 C (56.9 F), and the warmest was 2011, at 17.5 C (63.6 F). The strongest colour marks a difference of 2.2 C (4.0 F).

Annual mean temperature at Tepetatillo as warming stripes, 1983 to 2012
Year	Annual mean temperature	Difference from the station mean
1983	16.5 C	+0.50 C
1984	16.3 C	+0.34 C
1985	16.5 C	+0.48 C
1990	17.2 C	+1.25 C
1994	16.9 C	+0.96 C
1995	16.5 C	+0.50 C
1996	16.2 C	+0.21 C
1997	16.1 C	+0.12 C
1998	16.3 C	+0.31 C
1999	16.8 C	+0.86 C
2000	16.7 C	+0.73 C
2001	16.3 C	+0.37 C
2002	15.5 C	-0.43 C
2003	15.2 C	-0.82 C
2004	13.8 C	-2.13 C
2005	14.3 C	-1.67 C
2006	14.7 C	-1.30 C
2007	14.8 C	-1.21 C
2008	14.3 C	-1.65 C
2010	15.4 C	-0.55 C
2011	17.5 C	+1.57 C
2012	17.5 C	+1.49 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

1979 to 2013

Yearly extremes at Tepetatillo: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	37.8 C (100.0 F)	2011	33.9 C (93.0 F)	32
Coldest night (TNn)	-9.4 C (15.1 F)	2003	-4.4 C (24.1 F)	32
Wettest day (Rx1day)	85.3 mm (3.4 in)	2013	39.9 mm (1.6 in)	32
Wettest five days (Rx5day)	148.1 mm (5.8 in)	1988	71.6 mm (2.8 in)	32
Longest dry spell (CDD)	158 days	1998	95 days	32

Hottest day (TXx)

The hottest day of the year at Tepetatillo, 1979 to 2013. The record is 37.8 C (100.0 F) in 2011, marked on the chart; the median year is 33.9 C (93.0 F).

Hottest day (TXx) at Tepetatillo by year
Year	Hottest day (TXx)
1979	30.0 C (86.0 F)
1980	35.0 C (95.0 F)
1981	31.7 C (89.1 F)
1982	35.6 C (96.1 F)
1983	36.7 C (98.1 F)
1984	32.8 C (91.0 F)
1985	33.9 C (93.0 F)
1986	31.7 C (89.1 F)
1987	32.2 C (90.0 F)
1988	33.9 C (93.0 F)
1989	35.0 C (95.0 F)
1990	35.6 C (96.1 F)
1994	33.9 C (93.0 F)
1995	33.9 C (93.0 F)
1996	33.9 C (93.0 F)
1997	31.7 C (89.1 F)
1998	35.6 C (96.1 F)
1999	35.0 C (95.0 F)
2000	32.8 C (91.0 F)
2001	35.0 C (95.0 F)
2002	33.9 C (93.0 F)
2003	35.6 C (96.1 F)
2004	35.0 C (95.0 F)
2005	35.6 C (96.1 F)
2006	33.9 C (93.0 F)
2007	33.9 C (93.0 F)
2008	33.9 C (93.0 F)
2009	35.0 C (95.0 F)
2010	33.9 C (93.0 F)
2011	37.8 C (100.0 F)
2012	36.7 C (98.1 F)
2013	35.6 C (96.1 F)

Coldest night (TNn)

The coldest night of the year at Tepetatillo, 1979 to 2013. The record is -9.4 C (15.1 F) in 2003, marked on the chart; the median year is -4.4 C (24.1 F).

Coldest night (TNn) at Tepetatillo by year
Year	Coldest night (TNn)
1979	-3.3 C (26.1 F)
1980	0.0 C (32.0 F)
1981	-0.6 C (30.9 F)
1982	-1.1 C (30.0 F)
1983	-3.3 C (26.1 F)
1984	-1.1 C (30.0 F)
1985	-4.4 C (24.1 F)
1986	-3.3 C (26.1 F)
1987	0.0 C (32.0 F)
1988	-5.0 C (23.0 F)
1989	-2.2 C (28.0 F)
1990	-2.2 C (28.0 F)
1994	-3.3 C (26.1 F)
1995	-3.3 C (26.1 F)
1996	-3.3 C (26.1 F)
1997	-8.3 C (17.1 F)
1998	-5.0 C (23.0 F)
1999	-4.4 C (24.1 F)
2000	-5.0 C (23.0 F)
2001	-5.0 C (23.0 F)
2002	-6.1 C (21.0 F)
2003	-9.4 C (15.1 F)
2004	-8.3 C (17.1 F)
2005	-6.1 C (21.0 F)
2006	-9.4 C (15.1 F)
2007	-5.0 C (23.0 F)
2008	-5.0 C (23.0 F)
2009	-7.2 C (19.0 F)
2010	-7.2 C (19.0 F)
2011	-8.3 C (17.1 F)
2012	-4.4 C (24.1 F)
2013	-4.4 C (24.1 F)

Wettest day (Rx1day)

The wettest day of the year at Tepetatillo, 1979 to 2013. The record is 85.3 mm (3.4 in) in 2013, marked on the chart; the median year is 39.9 mm (1.6 in).

Wettest day (Rx1day) at Tepetatillo by year
Year	Wettest day (Rx1day)
1979	39.9 mm (1.6 in)
1980	18.8 mm (0.7 in)
1981	31.8 mm (1.3 in)
1982	19.8 mm (0.8 in)
1983	62.0 mm (2.4 in)
1984	37.8 mm (1.5 in)
1985	32.8 mm (1.3 in)
1986	51.8 mm (2.0 in)
1987	46.0 mm (1.8 in)
1988	41.9 mm (1.6 in)
1989	36.8 mm (1.4 in)
1990	47.8 mm (1.9 in)
1994	27.9 mm (1.1 in)
1995	39.9 mm (1.6 in)
1996	36.8 mm (1.4 in)
1997	35.8 mm (1.4 in)
1998	84.8 mm (3.3 in)
1999	52.8 mm (2.1 in)
2000	33.8 mm (1.3 in)
2001	43.9 mm (1.7 in)
2002	62.0 mm (2.4 in)
2003	25.9 mm (1.0 in)
2004	45.0 mm (1.8 in)
2005	36.8 mm (1.4 in)
2006	36.8 mm (1.4 in)
2007	67.8 mm (2.7 in)
2008	40.9 mm (1.6 in)
2009	30.0 mm (1.2 in)
2010	49.8 mm (2.0 in)
2011	49.8 mm (2.0 in)
2012	34.8 mm (1.4 in)
2013	85.3 mm (3.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Tepetatillo, 1979 to 2013. The record is 148.1 mm (5.8 in) in 1988, marked on the chart; the median year is 71.6 mm (2.8 in).

Wettest five days (Rx5day) at Tepetatillo by year
Year	Wettest five days (Rx5day)
1979	58.5 mm (2.3 in)
1980	27.4 mm (1.1 in)
1981	46.0 mm (1.8 in)
1982	47.2 mm (1.9 in)
1983	125.7 mm (4.9 in)
1984	64.6 mm (2.5 in)
1985	86.3 mm (3.4 in)
1986	112.5 mm (4.4 in)
1987	53.4 mm (2.1 in)
1988	148.1 mm (5.8 in)
1989	63.8 mm (2.5 in)
1990	125.3 mm (4.9 in)
1994	37.8 mm (1.5 in)
1995	60.3 mm (2.4 in)
1996	89.4 mm (3.5 in)
1997	62.2 mm (2.4 in)
1998	118.3 mm (4.7 in)
1999	65.2 mm (2.6 in)
2000	75.5 mm (3.0 in)
2001	92.2 mm (3.6 in)
2002	85.1 mm (3.4 in)
2003	66.4 mm (2.6 in)
2004	79.5 mm (3.1 in)
2005	53.3 mm (2.1 in)
2006	66.1 mm (2.6 in)
2007	96.2 mm (3.8 in)
2008	104.4 mm (4.1 in)
2009	67.6 mm (2.7 in)
2010	123.5 mm (4.9 in)
2011	77.2 mm (3.0 in)
2012	54.4 mm (2.1 in)
2013	124.9 mm (4.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Tepetatillo, 1979 to 2013. The record is 158 days in 1998, marked on the chart; the median year is 95 days.

Longest dry spell (CDD) at Tepetatillo by year
Year	Longest dry spell (CDD)
1979	52 days
1980	48 days
1981	31 days
1982	54 days
1983	126 days
1984	98 days
1985	101 days
1986	122 days
1987	93 days
1988	45 days
1989	123 days
1990	68 days
1994	86 days
1995	130 days
1996	113 days
1997	50 days
1998	158 days
1999	137 days
2000	140 days
2001	57 days
2002	86 days
2003	124 days
2004	47 days
2005	69 days
2006	83 days
2007	56 days
2008	103 days
2009	128 days
2010	96 days
2011	105 days
2012	86 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.

Frost Dates and Growing Season

20 years with a frost

Across 20 years with a frost, the median last spring frost at Tepetatillo falls on 19 March and the median first autumn frost on 7 November, which leaves a median of 238 days between them.

Frost dates and growing season at Tepetatillo
Measure	Median, all years	Earliest period	Recent period (1983 to 2012)	Recent against earliest	Fitted trend
Last spring frost	19 March	n/a	19 March	n/a	n/a
First autumn frost	7 November	n/a	7 November	n/a	n/a
Growing days	238 days	n/a	238 days	n/a	n/a

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Download the Data

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