El Mercado Weather Records (MXN00030319)

Record envelope, standing records and threshold days for El Mercado (MXN00030319), Mexico, with 34 years of record.

Key Facts for El Mercado

El Mercado (MXN00030319) is a weather station in Mexico at 21.48 latitude and -97.90 longitude, 72 m (236 ft) above sea level.
The station reports from 1978 to 2011, 34 years of record.
1,464 records set at El Mercado still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
El Mercado set a daily record high minimum temperature of 19.4 C (66.9 F) on 16 December 2011.

About the Station

Location: Mexico, 21.48 latitude, -97.90 longitude.
Elevation: 72 m (236 ft).
Period of record: 1978 to 2011, 34 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 El Mercado. 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 El Mercado, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	35.6 C (96.1 F)	1.1 C (34.0 F)	n/a	n/a
Feb	36.7 C (98.1 F)	3.3 C (37.9 F)	n/a	n/a
Mar	43.9 C (111.0 F)	4.4 C (39.9 F)	n/a	n/a
Apr	47.2 C (117.0 F)	6.7 C (44.1 F)	n/a	n/a
May	43.3 C (109.9 F)	14.4 C (57.9 F)	n/a	n/a
Jun	45.0 C (113.0 F)	18.9 C (66.0 F)	n/a	n/a
Jul	39.4 C (102.9 F)	17.8 C (64.0 F)	n/a	n/a
Aug	38.9 C (102.0 F)	19.4 C (66.9 F)	n/a	n/a
Sep	40.0 C (104.0 F)	10.6 C (51.1 F)	n/a	n/a
Oct	36.7 C (98.1 F)	7.8 C (46.0 F)	n/a	n/a
Nov	35.6 C (96.1 F)	6.7 C (44.1 F)	n/a	n/a
Dec	35.0 C (95.0 F)	-1.7 C (28.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at El Mercado still stand. 1982 holds the most, with 77.

Standing records at El Mercado by the year they were set
Year set	Standing records
1978	20
1979	39
1980	60
1981	38
1982	77
1983	49
1984	69
1985	34
1986	50
1987	55
1988	48
1989	60
1990	28
1991	52
1992	49
1993	41
1994	27
1995	24
1996	50
1997	48
1998	74
1999	17
2000	32
2001	49
2002	67
2003	72
2004	37
2005	26
2006	62
2007	29
2008	37
2011	44

All-Time Record Progression

3 new records

3 all-time records were set at El Mercado between 3 February 2011 and 27 April 2011. Each dot is a new record.

When El Mercado set new all-time records
Date	Kind	Detail
2011-02-03	Record low maximum temperature	Record low maximum temperature 7.2 C (45.0 F)
2011-02-04	Record low maximum temperature	Record low maximum temperature 5.6 C (42.1 F)
2011-04-27	Record high maximum temperature	Record high maximum temperature 47.2 C (117.0 F)

Wettest Day of Each Month

Jun: 220.0 mm (8.7 in)

The wettest day on record for each calendar month at El Mercado. The most was 220.0 mm (8.7 in) on 23 June 1993.

Record daily precipitation for each month at El Mercado
Month	Record daily precipitation (mm)	Date
Jan	48.3 mm (1.9 in)	17 January 1981
Feb	63.0 mm (2.5 in)	24 February 1980
Mar	56.9 mm (2.2 in)	25 March 1992
Apr	56.9 mm (2.2 in)	8 April 1985
May	136.1 mm (5.4 in)	14 May 1982
Jun	220.0 mm (8.7 in)	23 June 1993
Jul	144.8 mm (5.7 in)	11 July 2004
Aug	204.5 mm (8.1 in)	7 August 1990
Sep	146.8 mm (5.8 in)	20 September 1993
Oct	163.3 mm (6.4 in)	31 October 2003
Nov	111.3 mm (4.4 in)	10 November 1993
Dec	57.9 mm (2.3 in)	3 December 1979

Period of Record Coverage

1978 to 2011

32 years of record at El Mercado, 1978 to 2011. 6 years have data for under 90 percent of days and are left out of rankings: 1978, 1979, 1980, 1990, 1995, 1999.

Days with data per year at El Mercado
Year	Days with data	Share of year	Complete
1978	110	30%	No
1979	235	64%	No
1980	327	89%	No
1981	329	90%	Yes
1982	351	96%	Yes
1983	362	99%	Yes
1984	359	98%	Yes
1985	337	92%	Yes
1986	365	100%	Yes
1987	365	100%	Yes
1988	366	100%	Yes
1989	364	100%	Yes
1990	304	83%	No
1991	357	98%	Yes
1992	366	100%	Yes
1993	365	100%	Yes
1994	333	91%	Yes
1995	245	67%	No
1996	366	100%	Yes
1997	356	98%	Yes
1998	360	99%	Yes
1999	243	67%	No
2000	335	92%	Yes
2001	365	100%	Yes
2002	364	100%	Yes
2003	365	100%	Yes
2004	364	99%	Yes
2005	365	100%	Yes
2006	365	100%	Yes
2007	363	99%	Yes
2008	364	99%	Yes
2011	361	99%	Yes

Latest Records

Latest records at El Mercado
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
16 December 2011	El Mercado, MX	daily high min	19.4 C (66.9 F)	0.5 C (0.9 F)	16 years	8 of 100 (Routine)
7 December 2011	El Mercado, MX	daily low min (Tie)	10.6 C (51.1 F)	tie	26 years	2 of 100 (Routine)
30 November 2011	El Mercado, MX	daily low min	7.8 C (46.0 F)	1.1 C (2.0 F)	21 years	12 of 100 (Routine)
29 November 2011	El Mercado, MX	monthly low min (Tie)	6.7 C (44.1 F)	tie	18 years	4 of 100 (Routine)
28 November 2011	El Mercado, MX	daily low min	7.2 C (45.0 F)	1.7 C (3.1 F)	18 years	13 of 100 (Routine)
26 November 2011	El Mercado, MX	daily rain	15.7 mm (0.6 in)	3.0 mm (0.12 in)	24 years	12 of 100 (Routine)
23 November 2011	El Mercado, MX	daily high min	21.7 C (71.1 F)	1.7 C (3.1 F)	28 years	16 of 100 (Routine)
16 November 2011	El Mercado, MX	daily high min (Tie)	20.6 C (69.1 F)	tie	9 years	1 of 100 (Routine)
27 October 2011	El Mercado, MX	daily high max (Tie)	33.3 C (91.9 F)	tie	14 years	1 of 100 (Routine)
21 October 2011	El Mercado, MX	daily low min (Tie)	13.3 C (55.9 F)	tie	21 years	2 of 100 (Routine)
11 October 2011	El Mercado, MX	daily rain	19.1 mm (0.8 in)	6.7 mm (0.26 in)	5 years	6 of 100 (Routine)
10 October 2011	El Mercado, MX	daily high max	33.9 C (93.0 F)	0.6 C (1.1 F)	5 years	5 of 100 (Routine)
1 October 2011	El Mercado, MX	daily rain	31.0 mm (1.2 in)	25.2 mm (1.0 in)	17 years	17 of 100 (Routine)
29 September 2011	El Mercado, MX	daily high max	35.6 C (96.1 F)	0.6 C (1.1 F)	8 years	6 of 100 (Routine)
28 September 2011	El Mercado, MX	daily high max	35.0 C (95.0 F)	0.6 C (1.1 F)	24 years	11 of 100 (Routine)
27 September 2011	El Mercado, MX	daily high max	38.9 C (102.0 F)	3.9 C (7.0 F)	24 years	21 of 100 (Routine)
26 September 2011	El Mercado, MX	daily high max (Tie)	35.0 C (95.0 F)	tie	8 years	1 of 100 (Routine)
25 September 2011	El Mercado, MX	daily high max	35.6 C (96.1 F)	0.6 C (1.1 F)	8 years	6 of 100 (Routine)
21 September 2011	El Mercado, MX	daily high max (Tie)	35.0 C (95.0 F)	tie	12 years	1 of 100 (Routine)
20 September 2011	El Mercado, MX	daily high max (Tie)	35.6 C (96.1 F)	tie	9 years	1 of 100 (Routine)

Climate Trend

21 complete years, 1983 to 2011

One stripe for each of 21 complete years at El Mercado, 1983 to 2011. Blue stripes are years cooler than the station's own mean of 24.1 C (75.4 F); red stripes are warmer. The coolest year was 1987, at 23.0 C (73.4 F), and the warmest was 1998, at 25.3 C (77.6 F). The strongest colour marks a difference of 1.3 C (2.3 F).

Annual mean temperature at El Mercado as warming stripes, 1983 to 2011
Year	Annual mean temperature	Difference from the station mean
1983	23.9 C	-0.28 C
1984	23.3 C	-0.82 C
1986	23.8 C	-0.37 C
1987	23.0 C	-1.12 C
1988	23.4 C	-0.78 C
1989	23.6 C	-0.56 C
1991	24.2 C	+0.05 C
1992	23.3 C	-0.82 C
1993	23.7 C	-0.43 C
1996	23.9 C	-0.27 C
1997	24.0 C	-0.14 C
1998	25.3 C	+1.21 C
2001	24.8 C	+0.63 C
2002	24.8 C	+0.63 C
2003	25.2 C	+1.07 C
2004	23.8 C	-0.31 C
2005	24.5 C	+0.34 C
2006	24.5 C	+0.32 C
2007	24.6 C	+0.44 C
2008	24.5 C	+0.40 C
2011	24.9 C	+0.81 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

1978 to 2011

Yearly extremes at El Mercado: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	47.2 C (117.0 F)	2011	40.3 C (104.5 F)	32
Coldest night (TNn)	-1.7 C (28.9 F)	1989	6.2 C (43.1 F)	32
Wettest day (Rx1day)	220.0 mm (8.7 in)	1993	99.2 mm (3.9 in)	32
Wettest five days (Rx5day)	419.0 mm (16.5 in)	1984	177.1 mm (7.0 in)	32
Longest dry spell (CDD)	73 days	1984	34 days	32

Hottest day (TXx)

The hottest day of the year at El Mercado, 1978 to 2011. The record is 47.2 C (117.0 F) in 2011, marked on the chart; the median year is 40.3 C (104.5 F).

Hottest day (TXx) at El Mercado by year
Year	Hottest day (TXx)
1978	35.0 C (95.0 F)
1979	38.9 C (102.0 F)
1980	41.1 C (106.0 F)
1981	37.8 C (100.0 F)
1982	37.8 C (100.0 F)
1983	41.7 C (107.1 F)
1984	43.3 C (109.9 F)
1985	35.6 C (96.1 F)
1986	37.8 C (100.0 F)
1987	38.9 C (102.0 F)
1988	38.9 C (102.0 F)
1989	40.6 C (105.1 F)
1990	37.8 C (100.0 F)
1991	42.2 C (108.0 F)
1992	39.4 C (102.9 F)
1993	38.9 C (102.0 F)
1994	37.2 C (99.0 F)
1995	42.2 C (108.0 F)
1996	38.9 C (102.0 F)
1997	39.4 C (102.9 F)
1998	45.6 C (114.1 F)
1999	40.0 C (104.0 F)
2000	42.8 C (109.0 F)
2001	42.8 C (109.0 F)
2002	42.2 C (108.0 F)
2003	43.9 C (111.0 F)
2004	41.7 C (107.1 F)
2005	42.8 C (109.0 F)
2006	41.7 C (107.1 F)
2007	37.8 C (100.0 F)
2008	42.8 C (109.0 F)
2011	47.2 C (117.0 F)

Coldest night (TNn)

The coldest night of the year at El Mercado, 1978 to 2011. The record is -1.7 C (28.9 F) in 1989, marked on the chart; the median year is 6.2 C (43.1 F).

Coldest night (TNn) at El Mercado by year
Year	Coldest night (TNn)
1978	6.7 C (44.1 F)
1979	4.4 C (39.9 F)
1980	7.8 C (46.0 F)
1981	7.2 C (45.0 F)
1982	5.0 C (41.0 F)
1983	0.0 C (32.0 F)
1984	5.0 C (41.0 F)
1985	3.3 C (37.9 F)
1986	3.9 C (39.0 F)
1987	1.1 C (34.0 F)
1988	5.6 C (42.1 F)
1989	-1.7 C (28.9 F)
1990	5.0 C (41.0 F)
1991	7.8 C (46.0 F)
1992	7.8 C (46.0 F)
1993	5.6 C (42.1 F)
1994	5.0 C (41.0 F)
1995	9.4 C (48.9 F)
1996	4.4 C (39.9 F)
1997	2.8 C (37.0 F)
1998	7.8 C (46.0 F)
1999	6.7 C (44.1 F)
2000	6.7 C (44.1 F)
2001	8.9 C (48.0 F)
2002	7.8 C (46.0 F)
2003	7.2 C (45.0 F)
2004	6.7 C (44.1 F)
2005	7.8 C (46.0 F)
2006	5.6 C (42.1 F)
2007	6.7 C (44.1 F)
2008	9.4 C (48.9 F)
2011	3.3 C (37.9 F)

Wettest day (Rx1day)

The wettest day of the year at El Mercado, 1978 to 2011. The record is 220.0 mm (8.7 in) in 1993, marked on the chart; the median year is 99.2 mm (3.9 in).

Wettest day (Rx1day) at El Mercado by year
Year	Wettest day (Rx1day)
1978	111.3 mm (4.4 in)
1979	82.8 mm (3.3 in)
1980	67.8 mm (2.7 in)
1981	132.3 mm (5.2 in)
1982	136.1 mm (5.4 in)
1983	63.8 mm (2.5 in)
1984	129.8 mm (5.1 in)
1985	85.1 mm (3.4 in)
1986	63.8 mm (2.5 in)
1987	101.1 mm (4.0 in)
1988	89.4 mm (3.5 in)
1989	52.8 mm (2.1 in)
1990	204.5 mm (8.1 in)
1991	129.8 mm (5.1 in)
1992	104.9 mm (4.1 in)
1993	220.0 mm (8.7 in)
1994	69.3 mm (2.7 in)
1995	88.9 mm (3.5 in)
1996	66.8 mm (2.6 in)
1997	69.3 mm (2.7 in)
1998	101.3 mm (4.0 in)
1999	89.4 mm (3.5 in)
2000	195.1 mm (7.7 in)
2001	63.0 mm (2.5 in)
2002	79.0 mm (3.1 in)
2003	163.3 mm (6.4 in)
2004	144.8 mm (5.7 in)
2005	97.3 mm (3.8 in)
2006	105.9 mm (4.2 in)
2007	102.6 mm (4.0 in)
2008	89.9 mm (3.5 in)
2011	127.0 mm (5.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at El Mercado, 1978 to 2011. The record is 419.0 mm (16.5 in) in 1984, marked on the chart; the median year is 177.1 mm (7.0 in).

Wettest five days (Rx5day) at El Mercado by year
Year	Wettest five days (Rx5day)
1978	303.2 mm (11.9 in)
1979	178.6 mm (7.0 in)
1980	166.9 mm (6.6 in)
1981	271.7 mm (10.7 in)
1982	172.9 mm (6.8 in)
1983	140.6 mm (5.5 in)
1984	419.0 mm (16.5 in)
1985	162.5 mm (6.4 in)
1986	90.2 mm (3.6 in)
1987	194.0 mm (7.6 in)
1988	162.9 mm (6.4 in)
1989	169.4 mm (6.7 in)
1990	327.7 mm (12.9 in)
1991	406.4 mm (16.0 in)
1992	157.3 mm (6.2 in)
1993	302.3 mm (11.9 in)
1994	128.8 mm (5.1 in)
1995	253.2 mm (10.0 in)
1996	213.1 mm (8.4 in)
1997	132.0 mm (5.2 in)
1998	174.8 mm (6.9 in)
1999	194.3 mm (7.6 in)
2000	223.6 mm (8.8 in)
2001	144.4 mm (5.7 in)
2002	139.0 mm (5.5 in)
2003	175.5 mm (6.9 in)
2004	164.3 mm (6.5 in)
2005	327.3 mm (12.9 in)
2006	111.2 mm (4.4 in)
2007	233.4 mm (9.2 in)
2008	214.1 mm (8.4 in)
2011	389.9 mm (15.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at El Mercado, 1978 to 2011. The record is 73 days in 1984, marked on the chart; the median year is 34 days.

Longest dry spell (CDD) at El Mercado by year
Year	Longest dry spell (CDD)
1978	11 days
1979	44 days
1980	20 days
1981	27 days
1982	37 days
1983	39 days
1984	73 days
1985	23 days
1986	40 days
1987	27 days
1988	29 days
1989	59 days
1990	26 days
1991	32 days
1992	18 days
1993	45 days
1994	27 days
1995	27 days
1996	47 days
1997	22 days
1998	54 days
1999	36 days
2000	27 days
2001	29 days
2002	37 days
2003	53 days
2004	30 days
2005	47 days
2006	45 days
2007	44 days
2008	30 days
2011	62 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 El Mercado standing records by year: CSV or JSON. Field meanings are on the data page.
Data for El Mercado 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).