Santa Maria Chilapa de Diaz Weather Records (MXN00020028)

Record envelope, standing records and threshold days for Santa Maria Chilapa de Diaz (MXN00020028), Mexico, with 31 years of record.

Key Facts for Santa Maria Chilapa de Diaz

Santa Maria Chilapa de Diaz (MXN00020028) is a weather station in Mexico at 17.57 latitude and -97.62 longitude, 1,881 m (6,171 ft) above sea level.
The station reports from 1970 to 2000, 31 years of record.
1,464 records set at Santa Maria Chilapa de Diaz still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Mexico, 17.57 latitude, -97.62 longitude.
Elevation: 1,881 m (6,171 ft).
Period of record: 1970 to 2000, 31 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 Santa Maria Chilapa de Diaz. 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 Santa Maria Chilapa de Diaz, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	35.0 C (95.0 F)	0.6 C (33.1 F)	n/a	n/a
Feb	35.0 C (95.0 F)	-2.2 C (28.0 F)	n/a	n/a
Mar	38.9 C (102.0 F)	1.7 C (35.1 F)	n/a	n/a
Apr	42.8 C (109.0 F)	2.8 C (37.0 F)	n/a	n/a
May	45.0 C (113.0 F)	5.0 C (41.0 F)	n/a	n/a
Jun	45.0 C (113.0 F)	5.0 C (41.0 F)	n/a	n/a
Jul	40.6 C (105.1 F)	2.8 C (37.0 F)	n/a	n/a
Aug	40.0 C (104.0 F)	6.7 C (44.1 F)	n/a	n/a
Sep	35.6 C (96.1 F)	6.7 C (44.1 F)	n/a	n/a
Oct	33.9 C (93.0 F)	5.0 C (41.0 F)	n/a	n/a
Nov	33.9 C (93.0 F)	0.6 C (33.1 F)	n/a	n/a
Dec	35.0 C (95.0 F)	1.7 C (35.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Santa Maria Chilapa de Diaz still stand. 1981 holds the most, with 215.

Standing records at Santa Maria Chilapa de Diaz by the year they were set
Year set	Standing records
1970	32
1971	34
1972	57
1973	43
1974	46
1975	45
1976	34
1977	30
1978	55
1979	34
1980	125
1981	215
1982	20
1983	32
1984	29
1985	8
1986	13
1987	28
1988	9
1989	40
1990	12
1991	25
1992	38
1993	31
1995	4
1996	35
1997	158
1998	153
1999	40
2000	39

Wettest Day of Each Month

Jul: 125.0 mm (4.9 in)

The wettest day on record for each calendar month at Santa Maria Chilapa de Diaz. The most was 125.0 mm (4.9 in) on 3 July 1999.

Record daily precipitation for each month at Santa Maria Chilapa de Diaz
Month	Record daily precipitation (mm)	Date
Jan	16.8 mm (0.7 in)	11 January 1984
Feb	30.0 mm (1.2 in)	25 February 1983
Mar	59.9 mm (2.4 in)	31 March 1985
Apr	22.9 mm (0.9 in)	27 April 1972
May	53.1 mm (2.1 in)	18 May 1985
Jun	47.8 mm (1.9 in)	12 June 1993
Jul	125.0 mm (4.9 in)	3 July 1999
Aug	45.0 mm (1.8 in)	16 August 1998
Sep	60.5 mm (2.4 in)	13 September 1978
Oct	79.0 mm (3.1 in)	15 October 1998
Nov	54.6 mm (2.1 in)	9 November 1989
Dec	30.7 mm (1.2 in)	13 December 1989

Period of Record Coverage

1970 to 2000

30 years of record at Santa Maria Chilapa de Diaz, 1970 to 2000. 10 years have data for under 90 percent of days and are left out of rankings: 1970, 1971, 1988, 1989, 1990, 1991, 1992, 1993 and others.

Days with data per year at Santa Maria Chilapa de Diaz
Year	Days with data	Share of year	Complete
1970	190	52%	No
1971	324	89%	No
1972	366	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	334	92%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	333	91%	Yes
1981	364	100%	Yes
1982	365	100%	Yes
1983	365	100%	Yes
1984	366	100%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	365	100%	Yes
1988	304	83%	No
1989	278	76%	No
1990	151	41%	No
1991	183	50%	No
1992	251	69%	No
1993	223	61%	No
1995	243	67%	No
1996	261	71%	No
1997	363	99%	Yes
1998	365	100%	Yes
1999	365	100%	Yes
2000	334	91%	Yes

Latest Records

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

Climate Trend

17 complete years, 1972 to 1999

One stripe for each of 17 complete years at Santa Maria Chilapa de Diaz, 1972 to 1999. Blue stripes are years cooler than the station's own mean of 18.6 C (65.5 F); red stripes are warmer. The coolest year was 1984, at 17.5 C (63.4 F), and the warmest was 1997, at 21.3 C (70.3 F). The strongest colour marks a difference of 2.7 C (4.9 F).

Annual mean temperature at Santa Maria Chilapa de Diaz as warming stripes, 1972 to 1999
Year	Annual mean temperature	Difference from the station mean
1972	18.5 C	-0.16 C
1973	18.6 C	-0.04 C
1974	17.8 C	-0.82 C
1975	18.0 C	-0.57 C
1976	17.9 C	-0.68 C
1978	17.6 C	-0.97 C
1979	18.1 C	-0.52 C
1981	18.4 C	-0.22 C
1982	18.4 C	-0.19 C
1983	18.4 C	-0.21 C
1984	17.5 C	-1.15 C
1985	17.9 C	-0.67 C
1986	18.4 C	-0.23 C
1987	18.0 C	-0.63 C
1997	21.3 C	+2.69 C
1998	21.2 C	+2.61 C
1999	20.3 C	+1.70 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

1970 to 2000

Yearly extremes at Santa Maria Chilapa de Diaz: 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	35.0 C (95.0 F)	30
Coldest night (TNn)	-2.2 C (28.0 F)	1976	1.7 C (35.1 F)	30
Wettest day (Rx1day)	125.0 mm (4.9 in)	1999	40.8 mm (1.6 in)	30
Wettest five days (Rx5day)	294.8 mm (11.6 in)	1999	75.3 mm (3.0 in)	30
Longest dry spell (CDD)	152 days	1998	70 days	30

Hottest day (TXx)

The hottest day of the year at Santa Maria Chilapa de Diaz, 1970 to 2000. The record is 45.0 C (113.0 F) in 1998, marked on the chart; the median year is 35.0 C (95.0 F).

Hottest day (TXx) at Santa Maria Chilapa de Diaz by year
Year	Hottest day (TXx)
1970	30.0 C (86.0 F)
1971	35.0 C (95.0 F)
1972	35.0 C (95.0 F)
1973	35.6 C (96.1 F)
1974	35.0 C (95.0 F)
1975	33.9 C (93.0 F)
1976	32.8 C (91.0 F)
1977	35.0 C (95.0 F)
1978	33.9 C (93.0 F)
1979	32.8 C (91.0 F)
1980	32.8 C (91.0 F)
1981	35.0 C (95.0 F)
1982	35.0 C (95.0 F)
1983	35.0 C (95.0 F)
1984	33.9 C (93.0 F)
1985	32.8 C (91.0 F)
1986	33.9 C (93.0 F)
1987	32.8 C (91.0 F)
1988	33.9 C (93.0 F)
1989	35.0 C (95.0 F)
1990	33.9 C (93.0 F)
1991	30.6 C (87.1 F)
1992	35.0 C (95.0 F)
1993	35.6 C (96.1 F)
1995	35.0 C (95.0 F)
1996	33.9 C (93.0 F)
1997	41.7 C (107.1 F)
1998	45.0 C (113.0 F)
1999	40.0 C (104.0 F)
2000	37.8 C (100.0 F)

Coldest night (TNn)

The coldest night of the year at Santa Maria Chilapa de Diaz, 1970 to 2000. The record is -2.2 C (28.0 F) in 1976, marked on the chart; the median year is 1.7 C (35.1 F).

Coldest night (TNn) at Santa Maria Chilapa de Diaz by year
Year	Coldest night (TNn)
1970	0.6 C (33.1 F)
1971	3.9 C (39.0 F)
1972	-1.1 C (30.0 F)
1973	0.6 C (33.1 F)
1974	2.8 C (37.0 F)
1975	0.6 C (33.1 F)
1976	-2.2 C (28.0 F)
1977	2.8 C (37.0 F)
1978	2.8 C (37.0 F)
1979	1.7 C (35.1 F)
1980	1.7 C (35.1 F)
1981	3.9 C (39.0 F)
1982	2.8 C (37.0 F)
1983	1.7 C (35.1 F)
1984	1.7 C (35.1 F)
1985	5.6 C (42.1 F)
1986	0.6 C (33.1 F)
1987	0.6 C (33.1 F)
1988	2.8 C (37.0 F)
1989	1.7 C (35.1 F)
1990	1.7 C (35.1 F)
1991	2.8 C (37.0 F)
1992	1.7 C (35.1 F)
1993	5.6 C (42.1 F)
1995	5.0 C (41.0 F)
1996	5.0 C (41.0 F)
1997	1.7 C (35.1 F)
1998	0.6 C (33.1 F)
1999	0.6 C (33.1 F)
2000	2.8 C (37.0 F)

Wettest day (Rx1day)

The wettest day of the year at Santa Maria Chilapa de Diaz, 1970 to 2000. The record is 125.0 mm (4.9 in) in 1999, marked on the chart; the median year is 40.8 mm (1.6 in).

Wettest day (Rx1day) at Santa Maria Chilapa de Diaz by year
Year	Wettest day (Rx1day)
1970	38.4 mm (1.5 in)
1971	33.5 mm (1.3 in)
1972	47.2 mm (1.9 in)
1973	25.4 mm (1.0 in)
1974	38.1 mm (1.5 in)
1975	52.1 mm (2.1 in)
1976	51.8 mm (2.0 in)
1977	47.8 mm (1.9 in)
1978	60.5 mm (2.4 in)
1979	49.3 mm (1.9 in)
1980	38.4 mm (1.5 in)
1981	43.9 mm (1.7 in)
1982	30.0 mm (1.2 in)
1983	38.9 mm (1.5 in)
1984	34.3 mm (1.4 in)
1985	59.9 mm (2.4 in)
1986	28.7 mm (1.1 in)
1987	26.2 mm (1.0 in)
1988	39.1 mm (1.5 in)
1989	54.6 mm (2.1 in)
1990	0.0 mm (0.00 in)
1991	69.9 mm (2.8 in)
1992	43.4 mm (1.7 in)
1993	47.8 mm (1.9 in)
1995	42.4 mm (1.7 in)
1996	37.8 mm (1.5 in)
1997	32.3 mm (1.3 in)
1998	79.0 mm (3.1 in)
1999	125.0 mm (4.9 in)
2000	38.4 mm (1.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Santa Maria Chilapa de Diaz, 1970 to 2000. The record is 294.8 mm (11.6 in) in 1999, marked on the chart; the median year is 75.3 mm (3.0 in).

Wettest five days (Rx5day) at Santa Maria Chilapa de Diaz by year
Year	Wettest five days (Rx5day)
1970	57.7 mm (2.3 in)
1971	86.2 mm (3.4 in)
1972	116.5 mm (4.6 in)
1973	70.1 mm (2.8 in)
1974	77.5 mm (3.1 in)
1975	77.5 mm (3.1 in)
1976	91.3 mm (3.6 in)
1977	100.4 mm (4.0 in)
1978	74.9 mm (2.9 in)
1979	80.7 mm (3.2 in)
1980	82.9 mm (3.3 in)
1981	152.1 mm (6.0 in)
1982	38.3 mm (1.5 in)
1983	128.7 mm (5.1 in)
1984	73.9 mm (2.9 in)
1985	72.4 mm (2.9 in)
1986	53.7 mm (2.1 in)
1987	53.5 mm (2.1 in)
1988	72.9 mm (2.9 in)
1989	54.6 mm (2.1 in)
1990	0.0 mm (0.00 in)
1991	119.4 mm (4.7 in)
1992	57.2 mm (2.3 in)
1993	63.0 mm (2.5 in)
1995	78.2 mm (3.1 in)
1996	75.0 mm (3.0 in)
1997	67.0 mm (2.6 in)
1998	108.7 mm (4.3 in)
1999	294.8 mm (11.6 in)
2000	75.6 mm (3.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Santa Maria Chilapa de Diaz, 1970 to 2000. The record is 152 days in 1998, marked on the chart; the median year is 70 days.

Longest dry spell (CDD) at Santa Maria Chilapa de Diaz by year
Year	Longest dry spell (CDD)
1970	46 days
1971	68 days
1972	71 days
1973	94 days
1974	63 days
1975	76 days
1976	93 days
1977	86 days
1978	97 days
1979	64 days
1980	63 days
1981	69 days
1982	59 days
1983	72 days
1984	68 days
1985	50 days
1986	57 days
1987	92 days
1988	92 days
1989	81 days
1990	151 days
1991	35 days
1992	54 days
1993	33 days
1995	30 days
1996	34 days
1997	78 days
1998	152 days
1999	83 days
2000	71 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 Santa Maria Chilapa de Diaz standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Santa Maria Chilapa de Diaz 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 2026-10-16 (16 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).