Chignahuapan Weather Records (MXN00021140)

Record envelope, standing records and threshold days for Chignahuapan (MXN00021140), Mexico, with 36 years of record.

Key Facts for Chignahuapan

Chignahuapan (MXN00021140) is a weather station in Mexico at 19.83 latitude and -98.02 longitude, 2,291 m (7,516 ft) above sea level.
The station reports from 1974 to 2009, 36 years of record.
1,464 records set at Chignahuapan still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Mexico, 19.83 latitude, -98.02 longitude.
Elevation: 2,291 m (7,516 ft).
Period of record: 1974 to 2009, 36 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 Chignahuapan. 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 Chignahuapan, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	26.7 C (80.1 F)	-11.1 C (12.0 F)	n/a	n/a
Feb	27.8 C (82.0 F)	-10.0 C (14.0 F)	n/a	n/a
Mar	30.0 C (86.0 F)	-3.9 C (25.0 F)	n/a	n/a
Apr	31.7 C (89.1 F)	-6.1 C (21.0 F)	n/a	n/a
May	32.8 C (91.0 F)	0.0 C (32.0 F)	n/a	n/a
Jun	30.6 C (87.1 F)	-1.1 C (30.0 F)	n/a	n/a
Jul	28.9 C (84.0 F)	1.7 C (35.1 F)	n/a	n/a
Aug	28.9 C (84.0 F)	1.7 C (35.1 F)	n/a	n/a
Sep	25.6 C (78.1 F)	-4.4 C (24.1 F)	n/a	n/a
Oct	25.0 C (77.0 F)	-5.0 C (23.0 F)	n/a	n/a
Nov	25.6 C (78.1 F)	-6.1 C (21.0 F)	n/a	n/a
Dec	30.0 C (86.0 F)	-8.3 C (17.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Chignahuapan still stand. 1998 holds the most, with 165.

Standing records at Chignahuapan by the year they were set
Year set	Standing records
1974	9
1975	71
1976	59
1977	61
1978	52
1979	93
1980	53
1981	37
1982	44
1983	68
1984	94
1985	57
1986	41
1987	31
1988	34
1989	3
1990	30
1991	56
1992	42
1993	4
1994	16
1996	10
1997	43
1998	165
1999	22
2000	24
2001	35
2004	36
2005	32
2007	39
2008	36
2009	67

Wettest Day of Each Month

Oct: 100.6 mm (4.0 in)

The wettest day on record for each calendar month at Chignahuapan. The most was 100.6 mm (4.0 in) on 6 October 2005.

Record daily precipitation for each month at Chignahuapan
Month	Record daily precipitation (mm)	Date
Jan	29.5 mm (1.2 in)	29 January 1992
Feb	20.8 mm (0.8 in)	3 February 2007
Mar	24.9 mm (1.0 in)	30 March 2004
Apr	34.5 mm (1.4 in)	20 April 1979
May	30.5 mm (1.2 in)	22 May 1981
Jun	96.3 mm (3.8 in)	30 June 2007
Jul	54.1 mm (2.1 in)	26 July 2005
Aug	53.8 mm (2.1 in)	22 August 2007
Sep	67.8 mm (2.7 in)	9 September 1975
Oct	100.6 mm (4.0 in)	6 October 2005
Nov	33.3 mm (1.3 in)	12 November 1986
Dec	11.4 mm (0.4 in)	4 December 2000

Period of Record Coverage

1974 to 2009

32 years of record at Chignahuapan, 1974 to 2009. 14 years have data for under 90 percent of days and are left out of rankings: 1974, 1984, 1985, 1986, 1987, 1988, 1989, 1990 and others.

Days with data per year at Chignahuapan
Year	Days with data	Share of year	Complete
1974	24	7%	No
1975	365	100%	Yes
1976	365	100%	Yes
1977	364	100%	Yes
1978	362	99%	Yes
1979	364	100%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	342	94%	Yes
1984	329	90%	No
1985	328	90%	No
1986	314	86%	No
1987	147	40%	No
1988	120	33%	No
1989	31	8%	No
1990	178	49%	No
1991	364	100%	Yes
1992	366	100%	Yes
1993	120	33%	No
1994	92	25%	No
1996	69	19%	No
1997	234	64%	No
1998	332	91%	Yes
1999	147	40%	No
2000	200	55%	No
2001	364	100%	Yes
2004	365	100%	Yes
2005	365	100%	Yes
2007	359	98%	Yes
2008	360	98%	Yes
2009	363	99%	Yes

Latest Records

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

Climate Trend

16 complete years, 1975 to 2009

One stripe for each of 16 complete years at Chignahuapan, 1975 to 2009. Blue stripes are years cooler than the station's own mean of 12.4 C (54.3 F); red stripes are warmer. The coolest year was 1976, at 11.6 C (52.9 F), and the warmest was 1991, at 13.1 C (55.7 F). The strongest colour marks a difference of 0.9 C (1.6 F).

Annual mean temperature at Chignahuapan as warming stripes, 1975 to 2009
Year	Annual mean temperature	Difference from the station mean
1975	12.1 C	-0.32 C
1976	11.6 C	-0.80 C
1977	12.2 C	-0.22 C
1978	12.7 C	+0.34 C
1979	12.5 C	+0.08 C
1980	12.3 C	-0.07 C
1981	11.9 C	-0.49 C
1982	12.1 C	-0.27 C
1991	13.1 C	+0.74 C
1992	12.3 C	-0.10 C
2001	12.1 C	-0.29 C
2004	12.4 C	-0.03 C
2005	13.0 C	+0.56 C
2007	12.6 C	+0.21 C
2008	12.4 C	+0.01 C
2009	13.1 C	+0.68 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

1974 to 2009

Yearly extremes at Chignahuapan: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	32.8 C (91.0 F)	1998	28.9 C (84.0 F)	32
Coldest night (TNn)	-11.1 C (12.0 F)	1986	-3.6 C (25.5 F)	32
Wettest day (Rx1day)	100.6 mm (4.0 in)	2005	34.1 mm (1.3 in)	32
Wettest five days (Rx5day)	232.2 mm (9.1 in)	2005	67.9 mm (2.7 in)	32
Longest dry spell (CDD)	91 days	1998	42 days	32

Hottest day (TXx)

The hottest day of the year at Chignahuapan, 1974 to 2009. The record is 32.8 C (91.0 F) in 1998, marked on the chart; the median year is 28.9 C (84.0 F).

Hottest day (TXx) at Chignahuapan by year
Year	Hottest day (TXx)
1974	21.7 C (71.1 F)
1975	28.9 C (84.0 F)
1976	26.7 C (80.1 F)
1977	28.9 C (84.0 F)
1978	30.0 C (86.0 F)
1979	28.9 C (84.0 F)
1980	27.8 C (82.0 F)
1981	28.9 C (84.0 F)
1982	28.9 C (84.0 F)
1983	30.0 C (86.0 F)
1984	30.6 C (87.1 F)
1985	28.3 C (82.9 F)
1986	29.4 C (84.9 F)
1987	28.9 C (84.0 F)
1988	27.8 C (82.0 F)
1989	20.6 C (69.1 F)
1990	26.7 C (80.1 F)
1991	30.0 C (86.0 F)
1992	26.7 C (80.1 F)
1993	27.8 C (82.0 F)
1994	21.7 C (71.1 F)
1996	23.9 C (75.0 F)
1997	28.9 C (84.0 F)
1998	32.8 C (91.0 F)
1999	30.0 C (86.0 F)
2000	23.9 C (75.0 F)
2001	27.8 C (82.0 F)
2004	26.7 C (80.1 F)
2005	30.0 C (86.0 F)
2007	27.8 C (82.0 F)
2008	28.9 C (84.0 F)
2009	30.0 C (86.0 F)

Coldest night (TNn)

The coldest night of the year at Chignahuapan, 1974 to 2009. The record is -11.1 C (12.0 F) in 1986, marked on the chart; the median year is -3.6 C (25.5 F).

Coldest night (TNn) at Chignahuapan by year
Year	Coldest night (TNn)
1974	2.8 C (37.0 F)
1975	-4.4 C (24.1 F)
1976	-10.0 C (14.0 F)
1977	-5.0 C (23.0 F)
1978	-4.4 C (24.1 F)
1979	-6.1 C (21.0 F)
1980	-7.2 C (19.0 F)
1981	-4.4 C (24.1 F)
1982	-6.1 C (21.0 F)
1983	-8.3 C (17.1 F)
1984	-10.0 C (14.0 F)
1985	-9.4 C (15.1 F)
1986	-11.1 C (12.0 F)
1987	-8.3 C (17.1 F)
1988	0.0 C (32.0 F)
1989	-1.1 C (30.0 F)
1990	-3.3 C (26.1 F)
1991	-3.3 C (26.1 F)
1992	0.0 C (32.0 F)
1993	-3.3 C (26.1 F)
1994	0.6 C (33.1 F)
1996	0.6 C (33.1 F)
1997	-2.2 C (28.0 F)
1998	0.0 C (32.0 F)
1999	0.0 C (32.0 F)
2000	-2.2 C (28.0 F)
2001	-2.2 C (28.0 F)
2004	-5.0 C (23.0 F)
2005	-2.2 C (28.0 F)
2007	-3.3 C (26.1 F)
2008	-3.9 C (25.0 F)
2009	-4.4 C (24.1 F)

Wettest day (Rx1day)

The wettest day of the year at Chignahuapan, 1974 to 2009. The record is 100.6 mm (4.0 in) in 2005, marked on the chart; the median year is 34.1 mm (1.3 in).

Wettest day (Rx1day) at Chignahuapan by year
Year	Wettest day (Rx1day)
1974	1.3 mm (0.05 in)
1975	67.8 mm (2.7 in)
1976	52.3 mm (2.1 in)
1977	20.3 mm (0.8 in)
1978	27.9 mm (1.1 in)
1979	34.5 mm (1.4 in)
1980	41.9 mm (1.6 in)
1981	50.5 mm (2.0 in)
1982	19.3 mm (0.8 in)
1983	19.8 mm (0.8 in)
1984	34.3 mm (1.4 in)
1985	39.4 mm (1.6 in)
1986	33.3 mm (1.3 in)
1987	7.9 mm (0.31 in)
1988	18.3 mm (0.7 in)
1989	4.1 mm (0.16 in)
1990	17.8 mm (0.7 in)
1991	73.9 mm (2.9 in)
1992	41.4 mm (1.6 in)
1993	10.4 mm (0.4 in)
1994	24.1 mm (0.9 in)
1996	20.3 mm (0.8 in)
1997	23.9 mm (0.9 in)
1998	31.5 mm (1.2 in)
1999	39.9 mm (1.6 in)
2000	39.9 mm (1.6 in)
2001	42.9 mm (1.7 in)
2004	33.8 mm (1.3 in)
2005	100.6 mm (4.0 in)
2007	96.3 mm (3.8 in)
2008	62.2 mm (2.4 in)
2009	48.8 mm (1.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Chignahuapan, 1974 to 2009. The record is 232.2 mm (9.1 in) in 2005, marked on the chart; the median year is 67.9 mm (2.7 in).

Wettest five days (Rx5day) at Chignahuapan by year
Year	Wettest five days (Rx5day)
1974	1.3 mm (0.05 in)
1975	110.4 mm (4.3 in)
1976	94.3 mm (3.7 in)
1977	39.1 mm (1.5 in)
1978	97.7 mm (3.8 in)
1979	61.5 mm (2.4 in)
1980	70.9 mm (2.8 in)
1981	136.2 mm (5.4 in)
1982	49.5 mm (1.9 in)
1983	56.8 mm (2.2 in)
1984	78.4 mm (3.1 in)
1985	77.5 mm (3.1 in)
1986	58.7 mm (2.3 in)
1987	10.2 mm (0.4 in)
1988	44.2 mm (1.7 in)
1989	11.0 mm (0.4 in)
1990	25.9 mm (1.0 in)
1991	109.7 mm (4.3 in)
1992	72.0 mm (2.8 in)
1993	20.8 mm (0.8 in)
1994	39.4 mm (1.6 in)
1996	48.3 mm (1.9 in)
1997	45.4 mm (1.8 in)
1998	69.1 mm (2.7 in)
1999	83.6 mm (3.3 in)
2000	65.6 mm (2.6 in)
2001	80.0 mm (3.1 in)
2004	66.8 mm (2.6 in)
2005	232.2 mm (9.1 in)
2007	121.9 mm (4.8 in)
2008	176.5 mm (6.9 in)
2009	93.0 mm (3.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Chignahuapan, 1974 to 2009. The record is 91 days in 1998, marked on the chart; the median year is 42 days.

Longest dry spell (CDD) at Chignahuapan by year
Year	Longest dry spell (CDD)
1974	15 days
1975	49 days
1976	43 days
1977	63 days
1978	59 days
1979	56 days
1980	58 days
1981	41 days
1982	56 days
1983	72 days
1984	32 days
1985	52 days
1986	82 days
1987	52 days
1988	18 days
1989	19 days
1990	24 days
1991	30 days
1992	46 days
1993	28 days
1994	51 days
1996	16 days
1997	33 days
1998	91 days
1999	45 days
2000	28 days
2001	41 days
2004	47 days
2005	36 days
2007	26 days
2008	40 days
2009	23 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 Chignahuapan standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Chignahuapan 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 2026-10-15 (15 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).