E.T.A. 274 Cocula Weather Records (MXN00012164)

Record envelope, standing records and threshold days for E.T.A. 274 Cocula (MXN00012164), Mexico, with 38 years of record.

Key Facts for E.T.A. 274 Cocula

E.T.A. 274 Cocula (MXN00012164) is a weather station in Mexico at 18.23 latitude and -99.65 longitude, 670 m (2,198 ft) above sea level.
The station reports from 1975 to 2012, 38 years of record.
1,464 records set at E.T.A. 274 Cocula still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
E.T.A. 274 Cocula tied a daily record low minimum temperature of 10.0 C (50.0 F) on 24 December 2012.

About the Station

Location: Mexico, 18.23 latitude, -99.65 longitude.
Elevation: 670 m (2,198 ft).
Period of record: 1975 to 2012, 38 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 E.T.A. 274 Cocula. 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 E.T.A. 274 Cocula, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	38.9 C (102.0 F)	5.0 C (41.0 F)	n/a	n/a
Feb	40.0 C (104.0 F)	5.6 C (42.1 F)	n/a	n/a
Mar	42.2 C (108.0 F)	7.8 C (46.0 F)	n/a	n/a
Apr	45.0 C (113.0 F)	11.7 C (53.1 F)	n/a	n/a
May	45.0 C (113.0 F)	10.0 C (50.0 F)	n/a	n/a
Jun	43.9 C (111.0 F)	15.0 C (59.0 F)	n/a	n/a
Jul	42.8 C (109.0 F)	15.0 C (59.0 F)	n/a	n/a
Aug	40.6 C (105.1 F)	15.0 C (59.0 F)	n/a	n/a
Sep	38.9 C (102.0 F)	13.9 C (57.0 F)	n/a	n/a
Oct	41.1 C (106.0 F)	7.8 C (46.0 F)	n/a	n/a
Nov	36.7 C (98.1 F)	5.6 C (42.1 F)	n/a	n/a
Dec	38.9 C (102.0 F)	5.0 C (41.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at E.T.A. 274 Cocula still stand. 1985 holds the most, with 103.

Standing records at E.T.A. 274 Cocula by the year they were set
Year set	Standing records
1975	11
1976	65
1977	86
1978	32
1979	53
1980	42
1981	29
1982	53
1983	31
1984	50
1985	103
1986	48
1987	90
1988	41
1989	8
1990	30
1991	42
1992	39
1993	42
1994	101
1995	83
1996	53
1997	35
1998	69
2000	8
2001	47
2002	19
2003	21
2004	12
2005	25
2006	18
2007	11
2008	7
2009	13
2010	28
2011	11
2012	8

Wettest Day of Each Month

Jun: 127.0 mm (5.0 in)

The wettest day on record for each calendar month at E.T.A. 274 Cocula. The most was 127.0 mm (5.0 in) on 27 June 2003.

Record daily precipitation for each month at E.T.A. 274 Cocula
Month	Record daily precipitation (mm)	Date
Jan	34.8 mm (1.4 in)	25 January 1980
Feb	48.3 mm (1.9 in)	3 February 2010
Mar	22.9 mm (0.9 in)	16 March 1978
Apr	19.1 mm (0.8 in)	22 April 2011
May	82.8 mm (3.3 in)	17 May 2003
Jun	127.0 mm (5.0 in)	27 June 2003
Jul	96.8 mm (3.8 in)	7 July 2010
Aug	85.9 mm (3.4 in)	31 August 2005
Sep	109.5 mm (4.3 in)	23 September 1987
Oct	82.3 mm (3.2 in)	22 October 2007
Nov	39.9 mm (1.6 in)	2 November 1993
Dec	20.6 mm (0.8 in)	25 December 1995

Period of Record Coverage

1975 to 2012

37 years of record at E.T.A. 274 Cocula, 1975 to 2012. 13 years have data for under 90 percent of days and are left out of rankings: 1975, 1976, 1977, 1988, 1989, 1994, 1995, 1996 and others.

Days with data per year at E.T.A. 274 Cocula
Year	Days with data	Share of year	Complete
1975	100	27%	No
1976	242	66%	No
1977	160	44%	No
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	366	100%	Yes
1985	363	99%	Yes
1986	365	100%	Yes
1987	365	100%	Yes
1988	305	83%	No
1989	304	83%	No
1990	365	100%	Yes
1991	365	100%	Yes
1992	366	100%	Yes
1993	365	100%	Yes
1994	300	82%	No
1995	226	62%	No
1996	245	67%	No
1997	306	84%	No
1998	173	47%	No
2000	184	50%	No
2001	300	82%	No
2002	365	100%	Yes
2003	285	78%	No
2004	366	100%	Yes
2005	365	100%	Yes
2006	365	100%	Yes
2007	365	100%	Yes
2008	363	99%	Yes
2009	364	100%	Yes
2010	365	100%	Yes
2011	364	100%	Yes
2012	366	100%	Yes

Latest Records

Latest records at E.T.A. 274 Cocula
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
24 December 2012	E.T.A. 274 Cocula, MX	daily low min (Tie)	10.0 C (50.0 F)	tie	35 years	3 of 100 (Routine)
4 November 2012	E.T.A. 274 Cocula, MX	daily rain	1.3 mm (0.05 in)	0.3 mm (0.01 in)	10 years	6 of 100 (Routine)
25 September 2012	E.T.A. 274 Cocula, MX	daily rain	53.3 mm (2.1 in)	21.0 mm (0.8 in)	32 years	26 of 100 (Routine)
22 September 2012	E.T.A. 274 Cocula, MX	daily low min	17.2 C (63.0 F)	0.6 C (1.1 F)	16 years	12 of 100 (Routine)
13 September 2012	E.T.A. 274 Cocula, MX	daily high max	33.9 C (93.0 F)	0.6 C (1.1 F)	34 years	16 of 100 (Routine)
12 September 2012	E.T.A. 274 Cocula, MX	daily high max (Tie)	32.8 C (91.0 F)	tie	29 years	2 of 100 (Routine)
4 September 2012	E.T.A. 274 Cocula, MX	daily low min	16.7 C (62.1 F)	1.6 C (2.9 F)	6 years	17 of 100 (Routine)
24 August 2012	E.T.A. 274 Cocula, MX	daily rain	39.6 mm (1.6 in)	18.0 mm (0.7 in)	33 years	24 of 100 (Routine)
24 August 2012	E.T.A. 274 Cocula, MX	daily low max (Tie)	28.9 C (84.0 F)	tie	33 years	3 of 100 (Routine)
7 July 2012	E.T.A. 274 Cocula, MX	daily high max (Tie)	35.0 C (95.0 F)	tie	16 years	1 of 100 (Routine)
3 July 2012	E.T.A. 274 Cocula, MX	daily low max	28.3 C (82.9 F)	1.7 C (3.1 F)	34 years	20 of 100 (Routine)
29 June 2012	E.T.A. 274 Cocula, MX	daily rain	57.9 mm (2.3 in)	23.1 mm (0.9 in)	20 years	24 of 100 (Routine)
24 June 2012	E.T.A. 274 Cocula, MX	daily rain	50.8 mm (2.0 in)	16.0 mm (0.6 in)	7 years	15 of 100 (Routine)
21 June 2012	E.T.A. 274 Cocula, MX	daily low max	27.8 C (82.0 F)	1.1 C (2.0 F)	34 years	16 of 100 (Routine)
20 June 2012	E.T.A. 274 Cocula, MX	daily low max	28.3 C (82.9 F)	1.7 C (3.1 F)	26 years	15 of 100 (Routine)
17 June 2012	E.T.A. 274 Cocula, MX	daily rain	62.0 mm (2.4 in)	24.2 mm (1.0 in)	28 years	27 of 100 (Routine)
12 May 2012	E.T.A. 274 Cocula, MX	daily rain	24.6 mm (1.0 in)	6.8 mm (0.27 in)	22 years	13 of 100 (Routine)
9 May 2012	E.T.A. 274 Cocula, MX	daily rain (Tie)	3.8 mm (0.15 in)	tie	10 years	1 of 100 (Routine)
26 April 2012	E.T.A. 274 Cocula, MX	daily low min	16.1 C (61.0 F)	1.7 C (3.1 F)	16 years	14 of 100 (Routine)
5 April 2012	E.T.A. 274 Cocula, MX	daily low min (Tie)	15.0 C (59.0 F)	tie	16 years	1 of 100 (Routine)

Climate Trend

24 complete years, 1978 to 2012

One stripe for each of 24 complete years at E.T.A. 274 Cocula, 1978 to 2012. Blue stripes are years cooler than the station's own mean of 25.5 C (77.9 F); red stripes are warmer. The coolest year was 1985, at 23.4 C (74.0 F), and the warmest was 1982, at 26.6 C (80.0 F). The strongest colour marks a difference of 2.2 C (4.0 F).

Annual mean temperature at E.T.A. 274 Cocula as warming stripes, 1978 to 2012
Year	Annual mean temperature	Difference from the station mean
1978	25.9 C	+0.40 C
1979	26.2 C	+0.67 C
1980	26.1 C	+0.55 C
1981	26.0 C	+0.44 C
1982	26.6 C	+1.12 C
1983	25.9 C	+0.38 C
1984	24.7 C	-0.80 C
1985	23.4 C	-2.16 C
1986	25.5 C	-0.06 C
1987	24.7 C	-0.82 C
1990	26.2 C	+0.65 C
1991	26.0 C	+0.45 C
1992	25.4 C	-0.08 C
1993	26.5 C	+0.97 C
2002	24.6 C	-0.88 C
2004	25.5 C	-0.05 C
2005	26.0 C	+0.43 C
2006	25.1 C	-0.42 C
2007	25.8 C	+0.23 C
2008	25.1 C	-0.43 C
2009	25.3 C	-0.18 C
2010	25.1 C	-0.47 C
2011	25.7 C	+0.16 C
2012	25.5 C	0.00 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 2012

Yearly extremes at E.T.A. 274 Cocula: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	45.0 C (113.0 F)	1998	41.1 C (106.0 F)	37
Coldest night (TNn)	5.0 C (41.0 F)	1986	8.3 C (46.9 F)	37
Wettest day (Rx1day)	127.0 mm (5.0 in)	2003	61.8 mm (2.4 in)	38
Wettest five days (Rx5day)	174.5 mm (6.9 in)	2003	114.5 mm (4.5 in)	38
Longest dry spell (CDD)	155 days	1998	90 days	38

Hottest day (TXx)

The hottest day of the year at E.T.A. 274 Cocula, 1975 to 2012. The record is 45.0 C (113.0 F) in 1998, marked on the chart; the median year is 41.1 C (106.0 F).

Hottest day (TXx) at E.T.A. 274 Cocula by year
Year	Hottest day (TXx)
1975	35.0 C (95.0 F)
1976	39.4 C (102.9 F)
1977	38.9 C (102.0 F)
1978	41.7 C (107.1 F)
1979	41.1 C (106.0 F)
1980	41.7 C (107.1 F)
1981	41.1 C (106.0 F)
1982	42.2 C (108.0 F)
1983	41.1 C (106.0 F)
1984	42.2 C (108.0 F)
1985	38.9 C (102.0 F)
1986	41.7 C (107.1 F)
1987	38.9 C (102.0 F)
1988	42.2 C (108.0 F)
1989	40.6 C (105.1 F)
1990	42.8 C (109.0 F)
1991	43.9 C (111.0 F)
1992	39.4 C (102.9 F)
1993	43.9 C (111.0 F)
1994	43.9 C (111.0 F)
1995	41.1 C (106.0 F)
1996	38.9 C (102.0 F)
1997	40.0 C (104.0 F)
1998	45.0 C (113.0 F)
1999	n/a
2000	35.0 C (95.0 F)
2001	40.0 C (104.0 F)
2002	40.0 C (104.0 F)
2003	41.7 C (107.1 F)
2004	40.6 C (105.1 F)
2005	43.3 C (109.9 F)
2006	41.1 C (106.0 F)
2007	41.7 C (107.1 F)
2008	40.6 C (105.1 F)
2009	40.6 C (105.1 F)
2010	42.2 C (108.0 F)
2011	41.7 C (107.1 F)
2012	40.6 C (105.1 F)

Coldest night (TNn)

The coldest night of the year at E.T.A. 274 Cocula, 1975 to 2012. The record is 5.0 C (41.0 F) in 1986, marked on the chart; the median year is 8.3 C (46.9 F).

Coldest night (TNn) at E.T.A. 274 Cocula by year
Year	Coldest night (TNn)
1975	10.0 C (50.0 F)
1976	10.0 C (50.0 F)
1977	7.8 C (46.0 F)
1978	10.6 C (51.1 F)
1979	10.0 C (50.0 F)
1980	7.2 C (45.0 F)
1981	7.2 C (45.0 F)
1982	7.2 C (45.0 F)
1983	7.2 C (45.0 F)
1984	9.4 C (48.9 F)
1985	10.6 C (51.1 F)
1986	5.0 C (41.0 F)
1987	5.0 C (41.0 F)
1988	9.4 C (48.9 F)
1989	12.8 C (55.0 F)
1990	8.9 C (48.0 F)
1991	7.8 C (46.0 F)
1992	6.7 C (44.1 F)
1993	9.4 C (48.9 F)
1994	7.2 C (45.0 F)
1995	10.0 C (50.0 F)
1996	11.7 C (53.1 F)
1997	7.8 C (46.0 F)
1998	5.6 C (42.1 F)
1999	n/a
2000	10.6 C (51.1 F)
2001	7.8 C (46.0 F)
2002	5.6 C (42.1 F)
2003	8.3 C (46.9 F)
2004	8.3 C (46.9 F)
2005	7.8 C (46.0 F)
2006	5.0 C (41.0 F)
2007	9.4 C (48.9 F)
2008	8.9 C (48.0 F)
2009	8.9 C (48.0 F)
2010	5.0 C (41.0 F)
2011	7.2 C (45.0 F)
2012	10.0 C (50.0 F)

Wettest day (Rx1day)

The wettest day of the year at E.T.A. 274 Cocula, 1975 to 2012. The record is 127.0 mm (5.0 in) in 2003, marked on the chart; the median year is 61.8 mm (2.4 in).

Wettest day (Rx1day) at E.T.A. 274 Cocula by year
Year	Wettest day (Rx1day)
1975	62.0 mm (2.4 in)
1976	22.9 mm (0.9 in)
1977	55.4 mm (2.2 in)
1978	59.4 mm (2.3 in)
1979	66.3 mm (2.6 in)
1980	46.7 mm (1.8 in)
1981	50.8 mm (2.0 in)
1982	52.3 mm (2.1 in)
1983	63.0 mm (2.5 in)
1984	45.5 mm (1.8 in)
1985	56.9 mm (2.2 in)
1986	61.5 mm (2.4 in)
1987	109.5 mm (4.3 in)
1988	50.8 mm (2.0 in)
1989	54.9 mm (2.2 in)
1990	38.4 mm (1.5 in)
1991	71.9 mm (2.8 in)
1992	59.4 mm (2.3 in)
1993	62.5 mm (2.5 in)
1994	65.3 mm (2.6 in)
1995	70.4 mm (2.8 in)
1996	53.3 mm (2.1 in)
1997	53.1 mm (2.1 in)
1998	26.9 mm (1.1 in)
1999	24.4 mm (1.0 in)
2000	57.9 mm (2.3 in)
2001	33.8 mm (1.3 in)
2002	68.1 mm (2.7 in)
2003	127.0 mm (5.0 in)
2004	99.3 mm (3.9 in)
2005	85.9 mm (3.4 in)
2006	78.5 mm (3.1 in)
2007	82.3 mm (3.2 in)
2008	73.9 mm (2.9 in)
2009	71.4 mm (2.8 in)
2010	96.8 mm (3.8 in)
2011	65.8 mm (2.6 in)
2012	62.0 mm (2.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at E.T.A. 274 Cocula, 1975 to 2012. The record is 174.5 mm (6.9 in) in 2003, marked on the chart; the median year is 114.5 mm (4.5 in).

Wettest five days (Rx5day) at E.T.A. 274 Cocula by year
Year	Wettest five days (Rx5day)
1975	94.3 mm (3.7 in)
1976	38.7 mm (1.5 in)
1977	170.7 mm (6.7 in)
1978	86.4 mm (3.4 in)
1979	118.9 mm (4.7 in)
1980	87.1 mm (3.4 in)
1981	113.5 mm (4.5 in)
1982	97.0 mm (3.8 in)
1983	119.6 mm (4.7 in)
1984	119.4 mm (4.7 in)
1985	131.9 mm (5.2 in)
1986	108.5 mm (4.3 in)
1987	172.1 mm (6.8 in)
1988	110.5 mm (4.4 in)
1989	104.4 mm (4.1 in)
1990	82.8 mm (3.3 in)
1991	120.2 mm (4.7 in)
1992	115.4 mm (4.5 in)
1993	134.0 mm (5.3 in)
1994	107.5 mm (4.2 in)
1995	171.5 mm (6.8 in)
1996	66.0 mm (2.6 in)
1997	107.9 mm (4.2 in)
1998	39.9 mm (1.6 in)
1999	72.7 mm (2.9 in)
2000	91.4 mm (3.6 in)
2001	44.2 mm (1.7 in)
2002	111.6 mm (4.4 in)
2003	174.5 mm (6.9 in)
2004	149.9 mm (5.9 in)
2005	165.4 mm (6.5 in)
2006	120.9 mm (4.8 in)
2007	99.6 mm (3.9 in)
2008	165.3 mm (6.5 in)
2009	128.2 mm (5.0 in)
2010	155.0 mm (6.1 in)
2011	160.8 mm (6.3 in)
2012	126.3 mm (5.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at E.T.A. 274 Cocula, 1975 to 2012. The record is 155 days in 1998, marked on the chart; the median year is 90 days.

Longest dry spell (CDD) at E.T.A. 274 Cocula by year
Year	Longest dry spell (CDD)
1975	74 days
1976	90 days
1977	84 days
1978	65 days
1979	53 days
1980	56 days
1981	85 days
1982	74 days
1983	102 days
1984	114 days
1985	68 days
1986	136 days
1987	92 days
1988	81 days
1989	140 days
1990	123 days
1991	96 days
1992	57 days
1993	59 days
1994	153 days
1995	120 days
1996	125 days
1997	90 days
1998	155 days
1999	130 days
2000	70 days
2001	151 days
2002	49 days
2003	88 days
2004	87 days
2005	67 days
2006	99 days
2007	93 days
2008	137 days
2009	61 days
2010	97 days
2011	104 days
2012	88 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

30 years, 1978 to 2012

A day with at least 63.0 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 120.7 mm (4.8 in) of rain is expected about once in 100 years.

Rainfall return levels at E.T.A. 274 Cocula: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	63.0 mm (2.5 in)
5 years	77.7 mm (3.1 in)
10 years	87.7 mm (3.5 in)
25 years	100.7 mm (4.0 in)
50 years	110.6 mm (4.4 in)	Longer than the 30 years of record
100 years	120.7 mm (4.8 in)	Longer than the 30 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, 30 years of values from 1978 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: 109.5 mm (4.3 in) in 1987; 99.3 mm (3.9 in) in 2004; 96.8 mm (3.8 in) in 2010.

Download the Data

Data for E.T.A. 274 Cocula standing records by year: CSV or JSON. Field meanings are on the data page.
Data for E.T.A. 274 Cocula 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).