Cozoaltepec Weather Records (MXN00020326)

Record envelope, standing records and threshold days for Cozoaltepec (MXN00020326), Mexico, with 33 years of record.

Key Facts for Cozoaltepec

Cozoaltepec (MXN00020326) is a weather station in Mexico at 15.78 latitude and -96.72 longitude, 145 m (475 ft) above sea level.
The station reports from 1979 to 2011, 33 years of record.
1,464 records set at Cozoaltepec still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Cozoaltepec set a daily record precipitation of 17.8 mm (0.7 in) on 11 October 2011.

About the Station

Location: Mexico, 15.78 latitude, -96.72 longitude.
Elevation: 145 m (475 ft).
Period of record: 1979 to 2011, 33 years.
Eligible elements: 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 Cozoaltepec. 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 Cozoaltepec, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	36.7 C (98.1 F)	6.7 C (44.1 F)	n/a	n/a
Feb	38.9 C (102.0 F)	5.6 C (42.1 F)	n/a	n/a
Mar	37.8 C (100.0 F)	6.1 C (43.0 F)	n/a	n/a
Apr	40.0 C (104.0 F)	7.8 C (46.0 F)	n/a	n/a
May	40.0 C (104.0 F)	10.0 C (50.0 F)	n/a	n/a
Jun	36.7 C (98.1 F)	11.7 C (53.1 F)	n/a	n/a
Jul	37.8 C (100.0 F)	10.6 C (51.1 F)	n/a	n/a
Aug	36.7 C (98.1 F)	12.8 C (55.0 F)	n/a	n/a
Sep	38.9 C (102.0 F)	11.7 C (53.1 F)	n/a	n/a
Oct	35.6 C (96.1 F)	10.0 C (50.0 F)	n/a	n/a
Nov	35.6 C (96.1 F)	7.8 C (46.0 F)	n/a	n/a
Dec	36.7 C (98.1 F)	6.7 C (44.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Cozoaltepec still stand. 1989 holds the most, with 188.

Standing records at Cozoaltepec by the year they were set
Year set	Standing records
1979	18
1980	68
1981	138
1982	100
1983	82
1984	56
1985	19
1986	50
1987	21
1988	33
1989	188
1990	102
1993	4
1994	57
1995	34
1996	15
1997	14
2000	50
2001	21
2002	71
2003	61
2004	70
2005	62
2006	30
2007	7
2008	13
2009	13
2010	22
2011	45

Wettest Day of Each Month

Aug: 300.0 mm (11.8 in)

The wettest day on record for each calendar month at Cozoaltepec. The most was 300.0 mm (11.8 in) on 27 August 1981.

Record daily precipitation for each month at Cozoaltepec
Month	Record daily precipitation (mm)	Date
Jan	18.8 mm (0.7 in)	31 January 1995
Feb	19.8 mm (0.8 in)	25 February 1983
Mar	19.8 mm (0.8 in)	1 March 1982
Apr	45.0 mm (1.8 in)	13 April 2003
May	95.8 mm (3.8 in)	8 May 1984
Jun	152.9 mm (6.0 in)	27 June 1993
Jul	167.9 mm (6.6 in)	3 July 2011
Aug	300.0 mm (11.8 in)	27 August 1981
Sep	202.9 mm (8.0 in)	13 September 1999
Oct	137.9 mm (5.4 in)	15 October 1999
Nov	38.9 mm (1.5 in)	15 November 2006
Dec	22.9 mm (0.9 in)	23 December 1991

Period of Record Coverage

1979 to 2011

29 years of record at Cozoaltepec, 1979 to 2011. 12 years have data for under 90 percent of days and are left out of rankings: 1979, 1984, 1985, 1986, 1990, 1993, 1996, 1997 and others.

Days with data per year at Cozoaltepec
Year	Days with data	Share of year	Complete
1979	68	19%	No
1980	366	100%	Yes
1981	365	100%	Yes
1982	340	93%	Yes
1983	365	100%	Yes
1984	251	69%	No
1985	242	66%	No
1986	316	87%	No
1987	334	92%	Yes
1988	354	97%	Yes
1989	360	99%	Yes
1990	150	41%	No
1993	61	17%	No
1994	363	99%	Yes
1995	362	99%	Yes
1996	307	84%	No
1997	212	58%	No
2000	297	81%	No
2001	365	100%	Yes
2002	365	100%	Yes
2003	304	83%	No
2004	324	89%	No
2005	303	83%	No
2006	335	92%	Yes
2007	335	92%	Yes
2008	366	100%	Yes
2009	365	100%	Yes
2010	334	92%	Yes
2011	334	92%	Yes

Latest Records

Latest records at Cozoaltepec
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 October 2011	Cozoaltepec, MX	daily rain	17.8 mm (0.7 in)	12.0 mm (0.5 in)	16 years	13 of 100 (Routine)
14 September 2011	Cozoaltepec, MX	daily rain	22.4 mm (0.9 in)	2.6 mm (0.10 in)	20 years	10 of 100 (Routine)
21 August 2011	Cozoaltepec, MX	daily rain	78.5 mm (3.1 in)	28.7 mm (1.1 in)	0 years	13 of 100 (Routine)
16 July 2011	Cozoaltepec, MX	daily rain	66.8 mm (2.6 in)	35.8 mm (1.4 in)	4 years	21 of 100 (Routine)
3 July 2011	Cozoaltepec, MX	monthly rain	167.9 mm (6.6 in)	33.0 mm (1.3 in)	5 years	30 of 100 (Routine)
20 June 2011	Cozoaltepec, MX	daily rain	85.6 mm (3.4 in)	41.7 mm (1.6 in)	8 years	24 of 100 (Routine)
17 May 2011	Cozoaltepec, MX	daily rain	7.9 mm (0.31 in)	4.1 mm (0.16 in)	2 years	5 of 100 (Routine)
14 May 2011	Cozoaltepec, MX	daily rain	43.9 mm (1.7 in)	20.0 mm (0.8 in)	6 years	16 of 100 (Routine)
16 April 2011	Cozoaltepec, MX	daily rain	0.8 mm (0.03 in)	0.8 mm (0.03 in)	30 years	12 of 100 (Routine)

Climate Trend

11 complete years, 1980 to 2009

One stripe for each of 11 complete years at Cozoaltepec, 1980 to 2009. Blue stripes are years cooler than the station's own mean of 25.4 C (77.8 F); red stripes are warmer. The coolest year was 1983, at 23.4 C (74.0 F), and the warmest was 1980, at 26.7 C (80.0 F). The strongest colour marks a difference of 2.1 C (3.8 F).

Annual mean temperature at Cozoaltepec as warming stripes, 1980 to 2009
Year	Annual mean temperature	Difference from the station mean
1980	26.7 C	+1.24 C
1981	24.1 C	-1.37 C
1983	23.4 C	-2.10 C
1988	24.1 C	-1.34 C
1989	26.4 C	+0.97 C
1994	26.7 C	+1.21 C
1995	26.2 C	+0.79 C
2001	26.7 C	+1.23 C
2002	23.8 C	-1.69 C
2008	25.7 C	+0.29 C
2009	26.2 C	+0.73 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 2011

Yearly extremes at Cozoaltepec: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	40.0 C (104.0 F)	1989	36.7 C (98.1 F)	29
Coldest night (TNn)	5.6 C (42.1 F)	1983	10.0 C (50.0 F)	29
Wettest day (Rx1day)	300.0 mm (11.8 in)	1981	85.9 mm (3.4 in)	32
Wettest five days (Rx5day)	648.4 mm (25.5 in)	1981	150.7 mm (5.9 in)	32
Longest dry spell (CDD)	157 days	1988	90 days	32

Hottest day (TXx)

The hottest day of the year at Cozoaltepec, 1979 to 2011. The record is 40.0 C (104.0 F) in 1989, marked on the chart; the median year is 36.7 C (98.1 F).

Hottest day (TXx) at Cozoaltepec by year
Year	Hottest day (TXx)
1979	35.6 C (96.1 F)
1980	37.8 C (100.0 F)
1981	38.9 C (102.0 F)
1982	36.7 C (98.1 F)
1983	36.7 C (98.1 F)
1984	37.8 C (100.0 F)
1985	36.7 C (98.1 F)
1986	35.6 C (96.1 F)
1987	36.7 C (98.1 F)
1988	37.8 C (100.0 F)
1989	40.0 C (104.0 F)
1990	36.1 C (97.0 F)
1991	n/a
1992	n/a
1993	35.0 C (95.0 F)
1994	36.7 C (98.1 F)
1995	36.7 C (98.1 F)
1996	36.7 C (98.1 F)
1997	37.8 C (100.0 F)
1999	n/a
2000	36.7 C (98.1 F)
2001	36.7 C (98.1 F)
2002	38.9 C (102.0 F)
2003	38.9 C (102.0 F)
2004	38.9 C (102.0 F)
2005	36.7 C (98.1 F)
2006	36.7 C (98.1 F)
2007	35.6 C (96.1 F)
2008	36.7 C (98.1 F)
2009	36.7 C (98.1 F)
2010	37.8 C (100.0 F)
2011	40.0 C (104.0 F)

Coldest night (TNn)

The coldest night of the year at Cozoaltepec, 1979 to 2011. The record is 5.6 C (42.1 F) in 1983, marked on the chart; the median year is 10.0 C (50.0 F).

Coldest night (TNn) at Cozoaltepec by year
Year	Coldest night (TNn)
1979	15.6 C (60.1 F)
1980	11.7 C (53.1 F)
1981	7.8 C (46.0 F)
1982	6.7 C (44.1 F)
1983	5.6 C (42.1 F)
1984	8.9 C (48.0 F)
1985	11.7 C (53.1 F)
1986	11.1 C (52.0 F)
1987	10.0 C (50.0 F)
1988	9.4 C (48.9 F)
1989	6.1 C (43.0 F)
1990	17.2 C (63.0 F)
1991	n/a
1992	n/a
1993	15.0 C (59.0 F)
1994	11.7 C (53.1 F)
1995	15.0 C (59.0 F)
1996	11.7 C (53.1 F)
1997	12.8 C (55.0 F)
1999	n/a
2000	8.9 C (48.0 F)
2001	10.0 C (50.0 F)
2002	7.8 C (46.0 F)
2003	7.8 C (46.0 F)
2004	7.8 C (46.0 F)
2005	8.9 C (48.0 F)
2006	6.7 C (44.1 F)
2007	10.0 C (50.0 F)
2008	11.7 C (53.1 F)
2009	10.6 C (51.1 F)
2010	10.6 C (51.1 F)
2011	11.7 C (53.1 F)

Wettest day (Rx1day)

The wettest day of the year at Cozoaltepec, 1979 to 2011. The record is 300.0 mm (11.8 in) in 1981, marked on the chart; the median year is 85.9 mm (3.4 in).

Wettest day (Rx1day) at Cozoaltepec by year
Year	Wettest day (Rx1day)
1979	6.9 mm (0.27 in)
1980	90.9 mm (3.6 in)
1981	300.0 mm (11.8 in)
1982	54.9 mm (2.2 in)
1983	52.8 mm (2.1 in)
1984	104.9 mm (4.1 in)
1985	87.9 mm (3.5 in)
1986	89.9 mm (3.5 in)
1987	47.0 mm (1.9 in)
1988	81.8 mm (3.2 in)
1989	83.8 mm (3.3 in)
1990	83.8 mm (3.3 in)
1991	72.9 mm (2.9 in)
1992	99.8 mm (3.9 in)
1993	182.9 mm (7.2 in)
1994	79.8 mm (3.1 in)
1995	89.9 mm (3.5 in)
1996	130.8 mm (5.1 in)
1997	91.9 mm (3.6 in)
1999	202.9 mm (8.0 in)
2000	126.0 mm (5.0 in)
2001	67.8 mm (2.7 in)
2002	78.0 mm (3.1 in)
2003	68.8 mm (2.7 in)
2004	66.8 mm (2.6 in)
2005	134.9 mm (5.3 in)
2006	62.0 mm (2.4 in)
2007	82.8 mm (3.3 in)
2008	119.9 mm (4.7 in)
2009	79.8 mm (3.1 in)
2010	99.8 mm (3.9 in)
2011	167.9 mm (6.6 in)

Wettest five days (Rx5day)

The wettest five days of the year at Cozoaltepec, 1979 to 2011. The record is 648.4 mm (25.5 in) in 1981, marked on the chart; the median year is 150.7 mm (5.9 in).

Wettest five days (Rx5day) at Cozoaltepec by year
Year	Wettest five days (Rx5day)
1979	13.0 mm (0.5 in)
1980	182.9 mm (7.2 in)
1981	648.4 mm (25.5 in)
1982	194.7 mm (7.7 in)
1983	103.4 mm (4.1 in)
1984	139.5 mm (5.5 in)
1985	128.6 mm (5.1 in)
1986	178.4 mm (7.0 in)
1987	92.2 mm (3.6 in)
1988	156.3 mm (6.2 in)
1989	133.7 mm (5.3 in)
1990	122.5 mm (4.8 in)
1991	147.7 mm (5.8 in)
1992	161.0 mm (6.3 in)
1993	279.9 mm (11.0 in)
1994	79.8 mm (3.1 in)
1995	198.4 mm (7.8 in)
1996	140.5 mm (5.5 in)
1997	121.3 mm (4.8 in)
1999	265.5 mm (10.5 in)
2000	153.7 mm (6.1 in)
2001	123.1 mm (4.8 in)
2002	212.5 mm (8.4 in)
2003	169.4 mm (6.7 in)
2004	103.3 mm (4.1 in)
2005	230.4 mm (9.1 in)
2006	122.2 mm (4.8 in)
2007	147.6 mm (5.8 in)
2008	266.5 mm (10.5 in)
2009	122.2 mm (4.8 in)
2010	181.1 mm (7.1 in)
2011	200.4 mm (7.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Cozoaltepec, 1979 to 2011. The record is 157 days in 1988, marked on the chart; the median year is 90 days.

Longest dry spell (CDD) at Cozoaltepec by year
Year	Longest dry spell (CDD)
1979	26 days
1980	98 days
1981	148 days
1982	87 days
1983	71 days
1984	68 days
1985	60 days
1986	116 days
1987	75 days
1988	157 days
1989	90 days
1990	123 days
1991	146 days
1992	40 days
1993	129 days
1994	134 days
1995	100 days
1996	73 days
1997	59 days
1999	12 days
2000	65 days
2001	119 days
2002	137 days
2003	59 days
2004	84 days
2005	58 days
2006	134 days
2007	90 days
2008	137 days
2009	129 days
2010	95 days
2011	69 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 Cozoaltepec standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Cozoaltepec 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).