San Antonio Calpulalapan Weather Records (MXN00029019)

Record envelope, standing records and threshold days for San Antonio Calpulalapan (MXN00029019), Mexico, with 38 years of record.

Key Facts for San Antonio Calpulalapan

San Antonio Calpulalapan (MXN00029019) is a weather station in Mexico at 19.55 latitude and -98.57 longitude, 2,615 m (8,579 ft) above sea level.
The station reports from 1969 to 2006, 38 years of record.
1,464 records set at San Antonio Calpulalapan still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Mexico, 19.55 latitude, -98.57 longitude.
Elevation: 2,615 m (8,579 ft).
Period of record: 1969 to 2006, 38 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 San Antonio Calpulalapan. 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 San Antonio Calpulalapan, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	33.9 C (93.0 F)	-11.7 C (10.9 F)	n/a	n/a
Feb	35.6 C (96.1 F)	-10.0 C (14.0 F)	n/a	n/a
Mar	36.1 C (97.0 F)	-7.2 C (19.0 F)	n/a	n/a
Apr	39.4 C (102.9 F)	-5.0 C (23.0 F)	n/a	n/a
May	40.0 C (104.0 F)	-5.0 C (23.0 F)	n/a	n/a
Jun	40.0 C (104.0 F)	-1.7 C (28.9 F)	n/a	n/a
Jul	36.1 C (97.0 F)	-2.8 C (27.0 F)	n/a	n/a
Aug	37.2 C (99.0 F)	-3.9 C (25.0 F)	n/a	n/a
Sep	36.1 C (97.0 F)	-5.0 C (23.0 F)	n/a	n/a
Oct	35.0 C (95.0 F)	-10.0 C (14.0 F)	n/a	n/a
Nov	34.4 C (93.9 F)	-11.1 C (12.0 F)	n/a	n/a
Dec	33.3 C (91.9 F)	-10.6 C (12.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at San Antonio Calpulalapan still stand. 2005 holds the most, with 283.

Standing records at San Antonio Calpulalapan by the year they were set
Year set	Standing records
1974	64
1975	67
1976	62
1977	25
1978	64
1979	53
1980	50
1981	58
1982	32
1983	117
1984	34
1985	22
1986	24
1987	53
1988	25
1989	1
1991	7
1992	48
1996	28
1997	74
1998	85
1999	90
2000	31
2005	283
2006	67

Wettest Day of Each Month

Aug: 62.0 mm (2.4 in)

The wettest day on record for each calendar month at San Antonio Calpulalapan. The most was 62.0 mm (2.4 in) on 5 August 1998.

Record daily precipitation for each month at San Antonio Calpulalapan
Month	Record daily precipitation (mm)	Date
Jan	17.8 mm (0.7 in)	17 January 1981
Feb	12.4 mm (0.5 in)	11 February 1983
Mar	27.9 mm (1.1 in)	16 March 1978
Apr	23.9 mm (0.9 in)	24 April 1979
May	57.9 mm (2.3 in)	18 May 1985
Jun	61.0 mm (2.4 in)	20 June 1977
Jul	55.4 mm (2.2 in)	7 July 1981
Aug	62.0 mm (2.4 in)	5 August 1998
Sep	47.0 mm (1.9 in)	16 September 1998
Oct	36.3 mm (1.4 in)	4 October 1999
Nov	26.9 mm (1.1 in)	1 November 1973
Dec	15.5 mm (0.6 in)	19 December 1996

Period of Record Coverage

1974 to 2006

25 years of record at San Antonio Calpulalapan, 1974 to 2006. 8 years have data for under 90 percent of days and are left out of rankings: 1974, 1988, 1989, 1991, 1992, 1996, 2000, 2006.

Days with data per year at San Antonio Calpulalapan
Year	Days with data	Share of year	Complete
1974	174	48%	No
1975	365	100%	Yes
1976	365	100%	Yes
1977	365	100%	Yes
1978	364	100%	Yes
1979	365	100%	Yes
1980	365	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	363	99%	Yes
1984	366	100%	Yes
1985	365	100%	Yes
1986	335	92%	Yes
1987	365	100%	Yes
1988	243	66%	No
1989	59	16%	No
1991	61	17%	No
1992	182	50%	No
1996	326	89%	No
1997	365	100%	Yes
1998	365	100%	Yes
1999	365	100%	Yes
2000	123	34%	No
2005	361	99%	Yes
2006	119	33%	No

Latest Records

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

Climate Trend

16 complete years, 1975 to 2005

One stripe for each of 16 complete years at San Antonio Calpulalapan, 1975 to 2005. Blue stripes are years cooler than the station's own mean of 14.1 C (57.4 F); red stripes are warmer. The coolest year was 1999, at 11.3 C (52.4 F), and the warmest was 1983, at 17.2 C (63.0 F). The strongest colour marks a difference of 3.2 C (5.8 F).

Annual mean temperature at San Antonio Calpulalapan as warming stripes, 1975 to 2005
Year	Annual mean temperature	Difference from the station mean
1975	13.0 C	-1.18 C
1976	13.2 C	-0.93 C
1977	13.9 C	-0.26 C
1978	14.7 C	+0.60 C
1979	14.8 C	+0.65 C
1980	14.9 C	+0.75 C
1981	14.6 C	+0.46 C
1982	15.0 C	+0.85 C
1983	17.2 C	+3.11 C
1984	14.4 C	+0.28 C
1985	14.5 C	+0.40 C
1987	15.0 C	+0.82 C
1997	11.6 C	-2.50 C
1998	12.7 C	-1.42 C
1999	11.3 C	-2.81 C
2005	15.3 C	+1.14 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

1969 to 2006

Yearly extremes at San Antonio Calpulalapan: 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)	1983	31.1 C (88.0 F)	25
Coldest night (TNn)	-11.7 C (10.9 F)	1997	-4.4 C (24.1 F)	25
Wettest day (Rx1day)	62.0 mm (2.4 in)	1998	35.8 mm (1.4 in)	30
Wettest five days (Rx5day)	106.2 mm (4.2 in)	1977	86.3 mm (3.4 in)	30
Longest dry spell (CDD)	94 days	1986	55 days	30

Hottest day (TXx)

The hottest day of the year at San Antonio Calpulalapan, 1969 to 2006. The record is 40.0 C (104.0 F) in 1983, marked on the chart; the median year is 31.1 C (88.0 F).

Hottest day (TXx) at San Antonio Calpulalapan by year
Year	Hottest day (TXx)
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	30.6 C (87.1 F)
1975	30.0 C (86.0 F)
1976	28.3 C (82.9 F)
1977	30.6 C (87.1 F)
1978	31.7 C (89.1 F)
1979	30.6 C (87.1 F)
1980	30.6 C (87.1 F)
1981	30.0 C (86.0 F)
1982	31.1 C (88.0 F)
1983	40.0 C (104.0 F)
1984	31.1 C (88.0 F)
1985	31.1 C (88.0 F)
1986	31.1 C (88.0 F)
1987	30.0 C (86.0 F)
1988	31.7 C (89.1 F)
1989	26.1 C (79.0 F)
1991	26.1 C (79.0 F)
1992	30.0 C (86.0 F)
1996	31.1 C (88.0 F)
1997	30.0 C (86.0 F)
1998	35.6 C (96.1 F)
1999	32.8 C (91.0 F)
2000	35.0 C (95.0 F)
2005	40.0 C (104.0 F)
2006	36.1 C (97.0 F)

Coldest night (TNn)

The coldest night of the year at San Antonio Calpulalapan, 1969 to 2006. The record is -11.7 C (10.9 F) in 1997, marked on the chart; the median year is -4.4 C (24.1 F).

Coldest night (TNn) at San Antonio Calpulalapan by year
Year	Coldest night (TNn)
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	-3.3 C (26.1 F)
1975	-5.0 C (23.0 F)
1976	-6.7 C (19.9 F)
1977	-4.4 C (24.1 F)
1978	-3.3 C (26.1 F)
1979	-0.6 C (30.9 F)
1980	-3.3 C (26.1 F)
1981	-2.8 C (27.0 F)
1982	-3.9 C (25.0 F)
1983	-3.9 C (25.0 F)
1984	-2.2 C (28.0 F)
1985	-1.7 C (28.9 F)
1986	-5.0 C (23.0 F)
1987	-4.4 C (24.1 F)
1988	-6.1 C (21.0 F)
1989	-2.8 C (27.0 F)
1991	0.0 C (32.0 F)
1992	2.8 C (37.0 F)
1996	-6.7 C (19.9 F)
1997	-11.7 C (10.9 F)
1998	-8.9 C (16.0 F)
1999	-10.6 C (12.9 F)
2000	-5.0 C (23.0 F)
2005	-8.9 C (16.0 F)
2006	-11.1 C (12.0 F)

Wettest day (Rx1day)

The wettest day of the year at San Antonio Calpulalapan, 1969 to 2006. The record is 62.0 mm (2.4 in) in 1998, marked on the chart; the median year is 35.8 mm (1.4 in).

Wettest day (Rx1day) at San Antonio Calpulalapan by year
Year	Wettest day (Rx1day)
1969	41.9 mm (1.6 in)
1970	34.8 mm (1.4 in)
1971	30.0 mm (1.2 in)
1972	36.8 mm (1.4 in)
1973	54.9 mm (2.2 in)
1974	39.9 mm (1.6 in)
1975	56.4 mm (2.2 in)
1976	36.8 mm (1.4 in)
1977	61.0 mm (2.4 in)
1978	35.3 mm (1.4 in)
1979	49.8 mm (2.0 in)
1980	42.4 mm (1.7 in)
1981	55.4 mm (2.2 in)
1982	28.4 mm (1.1 in)
1983	33.3 mm (1.3 in)
1984	31.0 mm (1.2 in)
1985	57.9 mm (2.3 in)
1986	31.0 mm (1.2 in)
1987	28.4 mm (1.1 in)
1988	26.9 mm (1.1 in)
1989	0.8 mm (0.03 in)
1991	3.8 mm (0.15 in)
1992	39.9 mm (1.6 in)
1996	33.8 mm (1.3 in)
1997	39.9 mm (1.6 in)
1998	62.0 mm (2.4 in)
1999	36.3 mm (1.4 in)
2000	26.9 mm (1.1 in)
2005	33.8 mm (1.3 in)
2006	26.9 mm (1.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at San Antonio Calpulalapan, 1969 to 2006. The record is 106.2 mm (4.2 in) in 1977, marked on the chart; the median year is 86.3 mm (3.4 in).

Wettest five days (Rx5day) at San Antonio Calpulalapan by year
Year	Wettest five days (Rx5day)
1969	101.9 mm (4.0 in)
1970	97.3 mm (3.8 in)
1971	61.7 mm (2.4 in)
1972	72.5 mm (2.9 in)
1973	89.2 mm (3.5 in)
1974	101.4 mm (4.0 in)
1975	90.2 mm (3.6 in)
1976	84.3 mm (3.3 in)
1977	106.2 mm (4.2 in)
1978	105.7 mm (4.2 in)
1979	98.4 mm (3.9 in)
1980	73.5 mm (2.9 in)
1981	104.2 mm (4.1 in)
1982	42.7 mm (1.7 in)
1983	88.2 mm (3.5 in)
1984	90.5 mm (3.6 in)
1985	92.4 mm (3.6 in)
1986	54.1 mm (2.1 in)
1987	73.7 mm (2.9 in)
1988	42.5 mm (1.7 in)
1989	0.8 mm (0.03 in)
1991	7.4 mm (0.29 in)
1992	60.7 mm (2.4 in)
1996	52.1 mm (2.1 in)
1997	58.7 mm (2.3 in)
1998	104.7 mm (4.1 in)
1999	93.9 mm (3.7 in)
2000	78.5 mm (3.1 in)
2005	95.7 mm (3.8 in)
2006	42.7 mm (1.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at San Antonio Calpulalapan, 1969 to 2006. The record is 94 days in 1986, marked on the chart; the median year is 55 days.

Longest dry spell (CDD) at San Antonio Calpulalapan by year
Year	Longest dry spell (CDD)
1969	38 days
1970	78 days
1971	77 days
1972	70 days
1973	57 days
1974	48 days
1975	65 days
1976	80 days
1977	77 days
1978	43 days
1979	36 days
1980	37 days
1981	62 days
1982	55 days
1983	55 days
1984	34 days
1985	39 days
1986	94 days
1987	63 days
1988	42 days
1989	59 days
1991	24 days
1992	24 days
1996	47 days
1997	69 days
1998	76 days
1999	60 days
2000	9 days
2005	49 days
2006	42 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 San Antonio Calpulalapan standing records by year: CSV or JSON. Field meanings are on the data page.
Data for San Antonio Calpulalapan 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 2026-10-14 (14 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).