Terrones Weather Records (MXN00012139)

Record envelope, standing records and threshold days for Terrones (MXN00012139), Mexico, with 42 years of record.

Key Facts for Terrones

Terrones (MXN00012139) is a weather station in Mexico at 18.28 latitude and -100.67 longitude, 270 m (885 ft) above sea level.
The station reports from 1972 to 2013, 42 years of record.
1,464 records set at Terrones still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Terrones tied a daily record high maximum temperature of 40.0 C (104.0 F) on 31 July 2013.

About the Station

Location: Mexico, 18.28 latitude, -100.67 longitude.
Elevation: 270 m (885 ft).
Period of record: 1972 to 2013, 42 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 Terrones. 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 Terrones, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	42.8 C (109.0 F)	7.8 C (46.0 F)	n/a	n/a
Feb	46.1 C (115.0 F)	8.9 C (48.0 F)	n/a	n/a
Mar	46.7 C (116.1 F)	12.2 C (54.0 F)	n/a	n/a
Apr	47.8 C (118.0 F)	16.1 C (61.0 F)	n/a	n/a
May	48.9 C (120.0 F)	15.0 C (59.0 F)	n/a	n/a
Jun	46.1 C (115.0 F)	16.1 C (61.0 F)	n/a	n/a
Jul	42.8 C (109.0 F)	16.7 C (62.1 F)	n/a	n/a
Aug	42.2 C (108.0 F)	15.6 C (60.1 F)	n/a	n/a
Sep	41.7 C (107.1 F)	13.9 C (57.0 F)	n/a	n/a
Oct	42.2 C (108.0 F)	10.0 C (50.0 F)	n/a	n/a
Nov	42.8 C (109.0 F)	8.9 C (48.0 F)	n/a	n/a
Dec	41.1 C (106.0 F)	7.8 C (46.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Terrones still stand. 1991 holds the most, with 90.

Standing records at Terrones by the year they were set
Year set	Standing records
1972	32
1973	24
1974	13
1975	15
1976	17
1977	11
1978	20
1979	51
1980	26
1981	31
1982	25
1983	32
1984	61
1985	27
1986	47
1987	67
1988	60
1989	38
1991	90
1992	16
1994	50
1995	23
1996	55
1997	32
1998	60
1999	2
2000	15
2001	16
2002	27
2003	22
2004	33
2005	48
2006	83
2007	52
2008	7
2009	26
2010	71
2011	84
2012	29
2013	26

All-Time Record Progression

4 new records

4 all-time records were set at Terrones between 3 April 2006 and 27 May 2011. Each dot is a new record.

When Terrones set new all-time records
Date	Kind	Detail
2006-04-03	Record high maximum temperature	Record high maximum temperature 47.8 C (118.0 F)
2006-05-09	Record high maximum temperature	Record high maximum temperature 48.3 C (118.9 F)
2010-09-04	Record daily precipitation	Record daily precipitation 133.4 mm (5.3 in)
2011-05-27	Record high maximum temperature	Record high maximum temperature 48.9 C (120.0 F)

Wettest Day of Each Month

Sep: 133.4 mm (5.3 in)

The wettest day on record for each calendar month at Terrones. The most was 133.4 mm (5.3 in) on 4 September 2010.

Record daily precipitation for each month at Terrones
Month	Record daily precipitation (mm)	Date
Jan	64.8 mm (2.6 in)	24 January 1980
Feb	80.3 mm (3.2 in)	2 February 2010
Mar	31.0 mm (1.2 in)	2 March 2001
Apr	6.9 mm (0.27 in)	5 April 1973
May	47.0 mm (1.9 in)	16 May 1973
Jun	90.2 mm (3.6 in)	8 June 2001
Jul	111.5 mm (4.4 in)	20 July 1998
Aug	87.9 mm (3.5 in)	24 August 1977
Sep	133.4 mm (5.3 in)	4 September 2010
Oct	56.9 mm (2.2 in)	9 October 2003
Nov	30.5 mm (1.2 in)	20 November 2005
Dec	22.4 mm (0.9 in)	2 December 1986

Period of Record Coverage

1972 to 2013

40 years of record at Terrones, 1972 to 2013. 9 years have data for under 90 percent of days and are left out of rankings: 1989, 1992, 1995, 1999, 2008, 2009, 2011, 2012 and others.

Days with data per year at Terrones
Year	Days with data	Share of year	Complete
1972	354	97%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	365	100%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	365	100%	Yes
1984	364	99%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	365	100%	Yes
1988	366	100%	Yes
1989	304	83%	No
1991	334	92%	Yes
1992	152	42%	No
1994	335	92%	Yes
1995	243	67%	No
1996	366	100%	Yes
1997	365	100%	Yes
1998	365	100%	Yes
1999	212	58%	No
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	362	99%	Yes
2007	365	100%	Yes
2008	123	34%	No
2009	153	42%	No
2010	365	100%	Yes
2011	212	58%	No
2012	184	50%	No
2013	182	50%	No

Latest Records

Latest records at Terrones
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 July 2013	Terrones, MX	daily high max (Tie)	40.0 C (104.0 F)	tie	7 years	1 of 100 (Routine)
29 July 2013	Terrones, MX	daily high max	40.6 C (105.1 F)	0.6 C (1.1 F)	6 years	6 of 100 (Routine)
24 July 2013	Terrones, MX	daily high max	39.4 C (102.9 F)	0.5 C (0.9 F)	19 years	10 of 100 (Routine)
19 July 2013	Terrones, MX	daily high min	24.4 C (75.9 F)	0.5 C (0.9 F)	38 years	18 of 100 (Routine)
18 July 2013	Terrones, MX	daily high min (Tie)	25.0 C (77.0 F)	tie	2 years	1 of 100 (Routine)
4 July 2013	Terrones, MX	daily high max	40.0 C (104.0 F)	0.6 C (1.1 F)	27 years	13 of 100 (Routine)
3 July 2013	Terrones, MX	daily high max (Tie)	40.6 C (105.1 F)	tie	34 years	3 of 100 (Routine)
2 June 2013	Terrones, MX	daily rain	28.2 mm (1.1 in)	0.3 mm (0.01 in)	28 years	12 of 100 (Routine)
31 May 2013	Terrones, MX	daily high max (Tie)	45.0 C (113.0 F)	tie	22 years	2 of 100 (Routine)
22 May 2013	Terrones, MX	daily high max	46.1 C (115.0 F)	0.5 C (0.9 F)	22 years	11 of 100 (Routine)
21 May 2013	Terrones, MX	daily high max	46.1 C (115.0 F)	0.5 C (0.9 F)	6 years	6 of 100 (Routine)
19 May 2013	Terrones, MX	daily high max	47.2 C (117.0 F)	1.6 C (2.9 F)	6 years	10 of 100 (Routine)
19 May 2013	Terrones, MX	daily high min (Tie)	27.2 C (81.0 F)	tie	30 years	3 of 100 (Routine)
3 May 2013	Terrones, MX	daily low min (Tie)	20.0 C (68.0 F)	tie	3 years	1 of 100 (Routine)
2 May 2013	Terrones, MX	daily low min (Tie)	19.4 C (66.9 F)	tie	3 years	1 of 100 (Routine)
1 May 2013	Terrones, MX	daily low min (Tie)	20.0 C (68.0 F)	tie	24 years	2 of 100 (Routine)
18 April 2013	Terrones, MX	monthly high max (Tie)	47.8 C (118.0 F)	tie	7 years	4 of 100 (Routine)
17 April 2013	Terrones, MX	monthly high max (Tie)	47.8 C (118.0 F)	tie	7 years	4 of 100 (Routine)
15 April 2013	Terrones, MX	daily low min (Tie)	18.9 C (66.0 F)	tie	8 years	1 of 100 (Routine)
14 April 2013	Terrones, MX	daily low min	17.8 C (64.0 F)	1.1 C (2.0 F)	34 years	19 of 100 (Routine)

Climate Trend

28 complete years, 1973 to 2010

One stripe for each of 28 complete years at Terrones, 1973 to 2010. Blue stripes are years cooler than the station's own mean of 28.0 C (82.5 F); red stripes are warmer. The coolest year was 1988, at 25.6 C (78.1 F), and the warmest was 2007, at 30.4 C (86.7 F). The strongest colour marks a difference of 2.5 C (4.5 F).

Annual mean temperature at Terrones as warming stripes, 1973 to 2010
Year	Annual mean temperature	Difference from the station mean
1973	27.9 C	-0.16 C
1974	28.3 C	+0.24 C
1975	27.5 C	-0.52 C
1976	27.5 C	-0.55 C
1977	27.7 C	-0.32 C
1978	27.5 C	-0.55 C
1979	28.5 C	+0.40 C
1980	27.9 C	-0.11 C
1981	27.7 C	-0.38 C
1982	28.3 C	+0.20 C
1983	27.7 C	-0.37 C
1984	27.1 C	-0.92 C
1985	27.6 C	-0.42 C
1986	26.4 C	-1.64 C
1987	26.0 C	-2.01 C
1988	25.6 C	-2.44 C
1996	27.5 C	-0.54 C
1997	28.9 C	+0.87 C
1998	29.5 C	+1.41 C
2000	29.1 C	+1.05 C
2001	28.6 C	+0.52 C
2002	28.3 C	+0.28 C
2003	28.5 C	+0.41 C
2004	29.1 C	+1.08 C
2005	29.7 C	+1.64 C
2006	30.1 C	+2.00 C
2007	30.4 C	+2.34 C
2010	26.4 C	-1.63 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

1972 to 2013

Yearly extremes at Terrones: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	48.9 C (120.0 F)	2011	43.3 C (109.9 F)	40
Coldest night (TNn)	7.8 C (46.0 F)	1996	12.8 C (55.0 F)	40
Wettest day (Rx1day)	133.4 mm (5.3 in)	2010	58.9 mm (2.3 in)	40
Wettest five days (Rx5day)	238.0 mm (9.4 in)	2010	104.2 mm (4.1 in)	40
Longest dry spell (CDD)	175 days	1989	131 days	40

Hottest day (TXx)

The hottest day of the year at Terrones, 1972 to 2013. The record is 48.9 C (120.0 F) in 2011, marked on the chart; the median year is 43.3 C (109.9 F).

Hottest day (TXx) at Terrones by year
Year	Hottest day (TXx)
1972	41.7 C (107.1 F)
1973	42.8 C (109.0 F)
1974	42.8 C (109.0 F)
1975	42.8 C (109.0 F)
1976	42.8 C (109.0 F)
1977	45.0 C (113.0 F)
1978	42.8 C (109.0 F)
1979	43.3 C (109.9 F)
1980	45.0 C (113.0 F)
1981	42.8 C (109.0 F)
1982	42.2 C (108.0 F)
1983	45.0 C (113.0 F)
1984	41.7 C (107.1 F)
1985	45.0 C (113.0 F)
1986	45.0 C (113.0 F)
1987	45.0 C (113.0 F)
1988	40.6 C (105.1 F)
1989	40.6 C (105.1 F)
1991	46.1 C (115.0 F)
1992	42.8 C (109.0 F)
1994	42.8 C (109.0 F)
1995	43.9 C (111.0 F)
1996	43.9 C (111.0 F)
1997	46.7 C (116.1 F)
1998	45.0 C (113.0 F)
1999	43.9 C (111.0 F)
2000	43.9 C (111.0 F)
2001	43.3 C (109.9 F)
2002	43.3 C (109.9 F)
2003	40.6 C (105.1 F)
2004	45.6 C (114.1 F)
2005	46.1 C (115.0 F)
2006	48.3 C (118.9 F)
2007	47.8 C (118.0 F)
2008	40.0 C (104.0 F)
2009	42.8 C (109.0 F)
2010	41.7 C (107.1 F)
2011	48.9 C (120.0 F)
2012	42.8 C (109.0 F)
2013	47.8 C (118.0 F)

Coldest night (TNn)

The coldest night of the year at Terrones, 1972 to 2013. The record is 7.8 C (46.0 F) in 1996, marked on the chart; the median year is 12.8 C (55.0 F).

Coldest night (TNn) at Terrones by year
Year	Coldest night (TNn)
1972	13.9 C (57.0 F)
1973	12.8 C (55.0 F)
1974	13.9 C (57.0 F)
1975	12.2 C (54.0 F)
1976	12.8 C (55.0 F)
1977	11.7 C (53.1 F)
1978	13.9 C (57.0 F)
1979	13.9 C (57.0 F)
1980	14.4 C (57.9 F)
1981	12.2 C (54.0 F)
1982	13.9 C (57.0 F)
1983	12.8 C (55.0 F)
1984	10.6 C (51.1 F)
1985	15.0 C (59.0 F)
1986	15.6 C (60.1 F)
1987	14.4 C (57.9 F)
1988	13.3 C (55.9 F)
1989	15.0 C (59.0 F)
1991	15.6 C (60.1 F)
1992	14.4 C (57.9 F)
1994	15.0 C (59.0 F)
1995	13.9 C (57.0 F)
1996	7.8 C (46.0 F)
1997	7.8 C (46.0 F)
1998	8.9 C (48.0 F)
1999	11.7 C (53.1 F)
2000	13.9 C (57.0 F)
2001	12.8 C (55.0 F)
2002	11.1 C (52.0 F)
2003	10.6 C (51.1 F)
2004	10.6 C (51.1 F)
2005	11.7 C (53.1 F)
2006	10.0 C (50.0 F)
2007	10.6 C (51.1 F)
2008	12.8 C (55.0 F)
2009	10.0 C (50.0 F)
2010	10.0 C (50.0 F)
2011	10.0 C (50.0 F)
2012	13.9 C (57.0 F)
2013	15.6 C (60.1 F)

Wettest day (Rx1day)

The wettest day of the year at Terrones, 1972 to 2013. The record is 133.4 mm (5.3 in) in 2010, marked on the chart; the median year is 58.9 mm (2.3 in).

Wettest day (Rx1day) at Terrones by year
Year	Wettest day (Rx1day)
1972	84.8 mm (3.3 in)
1973	51.8 mm (2.0 in)
1974	57.9 mm (2.3 in)
1975	56.9 mm (2.2 in)
1976	59.9 mm (2.4 in)
1977	87.9 mm (3.5 in)
1978	45.0 mm (1.8 in)
1979	54.9 mm (2.2 in)
1980	74.9 mm (2.9 in)
1981	47.8 mm (1.9 in)
1982	42.9 mm (1.7 in)
1983	56.9 mm (2.2 in)
1984	74.9 mm (2.9 in)
1985	64.8 mm (2.6 in)
1986	65.3 mm (2.6 in)
1987	70.4 mm (2.8 in)
1988	59.9 mm (2.4 in)
1989	69.9 mm (2.8 in)
1991	69.9 mm (2.8 in)
1992	44.5 mm (1.8 in)
1994	42.9 mm (1.7 in)
1995	46.0 mm (1.8 in)
1996	81.8 mm (3.2 in)
1997	36.6 mm (1.4 in)
1998	111.5 mm (4.4 in)
1999	47.0 mm (1.9 in)
2000	53.8 mm (2.1 in)
2001	90.2 mm (3.6 in)
2002	50.3 mm (2.0 in)
2003	56.9 mm (2.2 in)
2004	59.9 mm (2.4 in)
2005	53.8 mm (2.1 in)
2006	59.9 mm (2.4 in)
2007	100.3 mm (3.9 in)
2008	59.9 mm (2.4 in)
2009	47.5 mm (1.9 in)
2010	133.4 mm (5.3 in)
2011	45.0 mm (1.8 in)
2012	82.6 mm (3.3 in)
2013	28.2 mm (1.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Terrones, 1972 to 2013. The record is 238.0 mm (9.4 in) in 2010, marked on the chart; the median year is 104.2 mm (4.1 in).

Wettest five days (Rx5day) at Terrones by year
Year	Wettest five days (Rx5day)
1972	159.8 mm (6.3 in)
1973	74.6 mm (2.9 in)
1974	79.3 mm (3.1 in)
1975	131.2 mm (5.2 in)
1976	117.6 mm (4.6 in)
1977	127.8 mm (5.0 in)
1978	75.7 mm (3.0 in)
1979	133.6 mm (5.3 in)
1980	139.0 mm (5.5 in)
1981	107.6 mm (4.2 in)
1982	96.6 mm (3.8 in)
1983	99.6 mm (3.9 in)
1984	132.9 mm (5.2 in)
1985	135.2 mm (5.3 in)
1986	92.0 mm (3.6 in)
1987	70.4 mm (2.8 in)
1988	113.5 mm (4.5 in)
1989	165.5 mm (6.5 in)
1991	145.3 mm (5.7 in)
1992	71.5 mm (2.8 in)
1994	95.2 mm (3.7 in)
1995	95.6 mm (3.8 in)
1996	143.8 mm (5.7 in)
1997	84.9 mm (3.3 in)
1998	149.4 mm (5.9 in)
1999	98.6 mm (3.9 in)
2000	77.8 mm (3.1 in)
2001	178.9 mm (7.0 in)
2002	85.2 mm (3.4 in)
2003	126.0 mm (5.0 in)
2004	110.0 mm (4.3 in)
2005	87.8 mm (3.5 in)
2006	99.9 mm (3.9 in)
2007	114.0 mm (4.5 in)
2008	96.8 mm (3.8 in)
2009	100.8 mm (4.0 in)
2010	238.0 mm (9.4 in)
2011	78.0 mm (3.1 in)
2012	118.4 mm (4.7 in)
2013	70.4 mm (2.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Terrones, 1972 to 2013. The record is 175 days in 1989, marked on the chart; the median year is 131 days.

Longest dry spell (CDD) at Terrones by year
Year	Longest dry spell (CDD)
1972	131 days
1973	94 days
1974	150 days
1975	109 days
1976	62 days
1977	81 days
1978	63 days
1979	134 days
1980	114 days
1981	102 days
1982	136 days
1983	71 days
1984	131 days
1985	134 days
1986	139 days
1987	159 days
1988	99 days
1989	175 days
1991	122 days
1992	100 days
1994	155 days
1995	120 days
1996	152 days
1997	159 days
1998	156 days
1999	123 days
2000	142 days
2001	66 days
2002	150 days
2003	153 days
2004	109 days
2005	168 days
2006	133 days
2007	155 days
2008	159 days
2009	134 days
2010	126 days
2011	121 days
2012	91 days
2013	72 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.

Rainfall Return Levels

35 years, 1972 to 2012

A day with at least 60.4 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 146.1 mm (5.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Terrones: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	60.4 mm (2.4 in)
5 years	78.2 mm (3.1 in)
10 years	91.8 mm (3.6 in)
25 years	111.4 mm (4.4 in)
50 years	127.9 mm (5.0 in)	Longer than the 35 years of record
100 years	146.1 mm (5.8 in)	Longer than the 35 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 35 years of values from 1972 to 2012.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 133.4 mm (5.3 in) in 2010; 111.5 mm (4.4 in) in 1998; 100.3 mm (3.9 in) in 2007.

Download the Data

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