Ocoyotepec Weather Records (MXN00015236)

Record envelope, standing records and threshold days for Ocoyotepec (MXN00015236), Mexico, with 35 years of record.

Key Facts for Ocoyotepec

Ocoyotepec (MXN00015236) is a weather station in Mexico at 19.48 latitude and -99.83 longitude, 2,706 m (8,877 ft) above sea level.
The station reports from 1977 to 2011, 35 years of record.
1,464 records set at Ocoyotepec still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Mexico, 19.48 latitude, -99.83 longitude.
Elevation: 2,706 m (8,877 ft).
Period of record: 1977 to 2011, 35 years.
Eligible elements: none yet.

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 Ocoyotepec. 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 Ocoyotepec, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	25.0 C (77.0 F)	-5.6 C (21.9 F)	n/a	n/a
Feb	26.7 C (80.1 F)	-5.6 C (21.9 F)	n/a	n/a
Mar	28.9 C (84.0 F)	-2.8 C (27.0 F)	n/a	n/a
Apr	31.7 C (89.1 F)	0.0 C (32.0 F)	n/a	n/a
May	34.4 C (93.9 F)	0.0 C (32.0 F)	n/a	n/a
Jun	30.0 C (86.0 F)	0.0 C (32.0 F)	n/a	n/a
Jul	29.4 C (84.9 F)	0.0 C (32.0 F)	n/a	n/a
Aug	29.4 C (84.9 F)	0.0 C (32.0 F)	n/a	n/a
Sep	29.4 C (84.9 F)	0.0 C (32.0 F)	n/a	n/a
Oct	29.4 C (84.9 F)	0.0 C (32.0 F)	n/a	n/a
Nov	29.4 C (84.9 F)	0.0 C (32.0 F)	n/a	n/a
Dec	29.4 C (84.9 F)	0.0 C (32.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Ocoyotepec still stand. 1998 holds the most, with 114.

Standing records at Ocoyotepec by the year they were set
Year set	Standing records
1977	12
1978	103
1979	52
1980	71
1981	59
1982	43
1983	53
1984	42
1985	19
1986	43
1987	31
1988	25
1989	47
1991	70
1992	43
1993	1
1994	13
1995	21
1996	39
1997	111
1998	114
1999	64
2000	54
2001	31
2002	11
2003	36
2004	34
2005	60
2006	48
2008	51
2011	63

Wettest Day of Each Month

Oct: 74.7 mm (2.9 in)

The wettest day on record for each calendar month at Ocoyotepec. The most was 74.7 mm (2.9 in) on 9 October 1988.

Record daily precipitation for each month at Ocoyotepec
Month	Record daily precipitation (mm)	Date
Jan	46.7 mm (1.8 in)	25 January 1980
Feb	32.3 mm (1.3 in)	12 February 1979
Mar	46.5 mm (1.8 in)	5 March 1988
Apr	42.9 mm (1.7 in)	30 April 1986
May	60.5 mm (2.4 in)	5 May 2011
Jun	61.5 mm (2.4 in)	14 June 1987
Jul	62.7 mm (2.5 in)	5 July 1985
Aug	70.6 mm (2.8 in)	2 August 2008
Sep	41.4 mm (1.6 in)	18 September 1983
Oct	74.7 mm (2.9 in)	9 October 1988
Nov	21.6 mm (0.9 in)	1 November 1980
Dec	32.3 mm (1.3 in)	4 December 1979

Period of Record Coverage

1977 to 2011

31 years of record at Ocoyotepec, 1977 to 2011. 12 years have data for under 90 percent of days and are left out of rankings: 1977, 1989, 1993, 1994, 1995, 1999, 2002, 2003 and others.

Days with data per year at Ocoyotepec
Year	Days with data	Share of year	Complete
1977	52	14%	No
1978	362	99%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	333	91%	Yes
1984	363	99%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	361	99%	Yes
1988	364	99%	Yes
1989	297	81%	No
1991	365	100%	Yes
1992	366	100%	Yes
1993	59	16%	No
1994	138	38%	No
1995	225	62%	No
1996	334	91%	Yes
1997	347	95%	Yes
1998	349	96%	Yes
1999	328	90%	No
2000	330	90%	Yes
2001	334	92%	Yes
2002	199	55%	No
2003	280	77%	No
2004	318	87%	No
2005	324	89%	No
2006	309	85%	No
2008	335	92%	Yes
2011	178	49%	No

Latest Records

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

Climate Trend

18 complete years, 1978 to 2008

One stripe for each of 18 complete years at Ocoyotepec, 1978 to 2008. Blue stripes are years cooler than the station's own mean of 13.0 C (55.5 F); red stripes are warmer. The coolest year was 2001, at 11.8 C (53.3 F), and the warmest was 2008, at 14.6 C (58.3 F). The strongest colour marks a difference of 1.6 C (2.9 F).

Annual mean temperature at Ocoyotepec as warming stripes, 1978 to 2008
Year	Annual mean temperature	Difference from the station mean
1978	12.6 C	-0.49 C
1979	12.8 C	-0.21 C
1980	13.2 C	+0.12 C
1981	12.9 C	-0.10 C
1982	13.4 C	+0.40 C
1984	12.8 C	-0.25 C
1985	12.8 C	-0.28 C
1986	12.9 C	-0.11 C
1987	13.2 C	+0.19 C
1988	13.4 C	+0.33 C
1991	13.3 C	+0.28 C
1992	12.7 C	-0.32 C
1998	13.1 C	+0.03 C
1999	12.5 C	-0.55 C
2001	11.8 C	-1.22 C
2005	13.2 C	+0.19 C
2006	13.4 C	+0.38 C
2008	14.6 C	+1.59 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

1977 to 2011

Yearly extremes at Ocoyotepec: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	34.4 C (93.9 F)	1998	27.2 C (81.0 F)	31
Coldest night (TNn)	-5.6 C (21.9 F)	1989	0.0 C (32.0 F)	31
Wettest day (Rx1day)	74.7 mm (2.9 in)	1988	40.4 mm (1.6 in)	31
Wettest five days (Rx5day)	161.1 mm (6.3 in)	2000	86.1 mm (3.4 in)	31
Longest dry spell (CDD)	150 days	1991	52 days	31

Hottest day (TXx)

The hottest day of the year at Ocoyotepec, 1977 to 2011. The record is 34.4 C (93.9 F) in 1998, marked on the chart; the median year is 27.2 C (81.0 F).

Hottest day (TXx) at Ocoyotepec by year
Year	Hottest day (TXx)
1977	21.7 C (71.1 F)
1978	26.7 C (80.1 F)
1979	25.0 C (77.0 F)
1980	25.6 C (78.1 F)
1981	28.9 C (84.0 F)
1982	27.2 C (81.0 F)
1983	30.6 C (87.1 F)
1984	26.7 C (80.1 F)
1985	25.0 C (77.0 F)
1986	27.8 C (82.0 F)
1987	25.0 C (77.0 F)
1988	30.6 C (87.1 F)
1989	27.2 C (81.0 F)
1991	22.8 C (73.0 F)
1992	25.0 C (77.0 F)
1993	26.1 C (79.0 F)
1994	23.9 C (75.0 F)
1995	29.4 C (84.9 F)
1996	27.2 C (81.0 F)
1997	25.6 C (78.1 F)
1998	34.4 C (93.9 F)
1999	30.0 C (86.0 F)
2000	28.3 C (82.9 F)
2001	26.1 C (79.0 F)
2002	28.9 C (84.0 F)
2003	28.3 C (82.9 F)
2004	29.4 C (84.9 F)
2005	30.0 C (86.0 F)
2006	29.4 C (84.9 F)
2008	31.7 C (89.1 F)
2011	28.9 C (84.0 F)

Coldest night (TNn)

The coldest night of the year at Ocoyotepec, 1977 to 2011. The record is -5.6 C (21.9 F) in 1989, marked on the chart; the median year is 0.0 C (32.0 F).

Coldest night (TNn) at Ocoyotepec by year
Year	Coldest night (TNn)
1977	1.1 C (34.0 F)
1978	0.6 C (33.1 F)
1979	0.6 C (33.1 F)
1980	0.0 C (32.0 F)
1981	0.0 C (32.0 F)
1982	0.0 C (32.0 F)
1983	-1.1 C (30.0 F)
1984	0.6 C (33.1 F)
1985	-1.7 C (28.9 F)
1986	0.0 C (32.0 F)
1987	-2.8 C (27.0 F)
1988	-2.8 C (27.0 F)
1989	-5.6 C (21.9 F)
1991	0.0 C (32.0 F)
1992	0.6 C (33.1 F)
1993	0.0 C (32.0 F)
1994	2.2 C (36.0 F)
1995	0.6 C (33.1 F)
1996	0.0 C (32.0 F)
1997	1.7 C (35.1 F)
1998	0.0 C (32.0 F)
1999	1.7 C (35.1 F)
2000	0.0 C (32.0 F)
2001	1.7 C (35.1 F)
2002	1.7 C (35.1 F)
2003	0.0 C (32.0 F)
2004	0.0 C (32.0 F)
2005	0.0 C (32.0 F)
2006	0.0 C (32.0 F)
2008	1.7 C (35.1 F)
2011	2.8 C (37.0 F)

Wettest day (Rx1day)

The wettest day of the year at Ocoyotepec, 1977 to 2011. The record is 74.7 mm (2.9 in) in 1988, marked on the chart; the median year is 40.4 mm (1.6 in).

Wettest day (Rx1day) at Ocoyotepec by year
Year	Wettest day (Rx1day)
1977	6.9 mm (0.27 in)
1978	29.0 mm (1.1 in)
1979	36.1 mm (1.4 in)
1980	46.7 mm (1.8 in)
1981	45.5 mm (1.8 in)
1982	68.6 mm (2.7 in)
1983	41.4 mm (1.6 in)
1984	36.1 mm (1.4 in)
1985	62.7 mm (2.5 in)
1986	57.2 mm (2.3 in)
1987	61.5 mm (2.4 in)
1988	74.7 mm (2.9 in)
1989	37.1 mm (1.5 in)
1991	24.9 mm (1.0 in)
1992	41.1 mm (1.6 in)
1993	12.2 mm (0.5 in)
1994	28.4 mm (1.1 in)
1995	39.9 mm (1.6 in)
1996	39.9 mm (1.6 in)
1997	23.9 mm (0.9 in)
1998	59.9 mm (2.4 in)
1999	20.6 mm (0.8 in)
2000	40.4 mm (1.6 in)
2001	40.4 mm (1.6 in)
2002	40.1 mm (1.6 in)
2003	40.4 mm (1.6 in)
2004	40.4 mm (1.6 in)
2005	40.4 mm (1.6 in)
2006	40.4 mm (1.6 in)
2008	70.6 mm (2.8 in)
2011	60.5 mm (2.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Ocoyotepec, 1977 to 2011. The record is 161.1 mm (6.3 in) in 2000, marked on the chart; the median year is 86.1 mm (3.4 in).

Wettest five days (Rx5day) at Ocoyotepec by year
Year	Wettest five days (Rx5day)
1977	6.9 mm (0.27 in)
1978	78.4 mm (3.1 in)
1979	58.9 mm (2.3 in)
1980	132.6 mm (5.2 in)
1981	78.7 mm (3.1 in)
1982	78.5 mm (3.1 in)
1983	86.3 mm (3.4 in)
1984	89.5 mm (3.5 in)
1985	90.9 mm (3.6 in)
1986	86.1 mm (3.4 in)
1987	118.4 mm (4.7 in)
1988	88.4 mm (3.5 in)
1989	67.0 mm (2.6 in)
1991	51.4 mm (2.0 in)
1992	80.0 mm (3.1 in)
1993	17.3 mm (0.7 in)
1994	55.6 mm (2.2 in)
1995	60.9 mm (2.4 in)
1996	81.1 mm (3.2 in)
1997	66.8 mm (2.6 in)
1998	109.9 mm (4.3 in)
1999	101.3 mm (4.0 in)
2000	161.1 mm (6.3 in)
2001	90.5 mm (3.6 in)
2002	68.8 mm (2.7 in)
2003	95.1 mm (3.7 in)
2004	101.1 mm (4.0 in)
2005	95.8 mm (3.8 in)
2006	94.0 mm (3.7 in)
2008	115.8 mm (4.6 in)
2011	84.1 mm (3.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Ocoyotepec, 1977 to 2011. The record is 150 days in 1991, marked on the chart; the median year is 52 days.

Longest dry spell (CDD) at Ocoyotepec by year
Year	Longest dry spell (CDD)
1977	32 days
1978	30 days
1979	41 days
1980	68 days
1981	46 days
1982	52 days
1983	70 days
1984	53 days
1985	57 days
1986	89 days
1987	45 days
1988	60 days
1989	57 days
1991	150 days
1992	70 days
1993	26 days
1994	76 days
1995	39 days
1996	54 days
1997	48 days
1998	66 days
1999	49 days
2000	133 days
2001	39 days
2002	30 days
2003	36 days
2004	30 days
2005	29 days
2006	58 days
2008	61 days
2011	44 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 Ocoyotepec standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Ocoyotepec 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).