Mexcaltitan Weather Records (MXN00018022)

Record envelope, standing records and threshold days for Mexcaltitan (MXN00018022), Mexico, with 45 years of record.

Key Facts for Mexcaltitan

Mexcaltitan (MXN00018022) is a weather station in Mexico at 21.90 latitude and -105.47 longitude, 4 m (13 ft) above sea level.
The station reports from 1969 to 2013, 45 years of record.
1,464 records set at Mexcaltitan still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Mexcaltitan set a daily record high maximum temperature of 36.7 C (98.1 F) on 30 December 2013.

About the Station

Location: Mexico, 21.90 latitude, -105.47 longitude.
Elevation: 4 m (13 ft).
Period of record: 1969 to 2013, 45 years.
Eligible elements: tmax, tmin, 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 Mexcaltitan. 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 Mexcaltitan, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	37.8 C (100.0 F)	1.7 C (35.1 F)	n/a	n/a
Feb	38.9 C (102.0 F)	3.9 C (39.0 F)	n/a	n/a
Mar	40.0 C (104.0 F)	5.6 C (42.1 F)	n/a	n/a
Apr	37.8 C (100.0 F)	7.2 C (45.0 F)	n/a	n/a
May	39.4 C (102.9 F)	9.4 C (48.9 F)	n/a	n/a
Jun	40.6 C (105.1 F)	12.8 C (55.0 F)	n/a	n/a
Jul	40.6 C (105.1 F)	15.0 C (59.0 F)	n/a	n/a
Aug	40.6 C (105.1 F)	15.6 C (60.1 F)	n/a	n/a
Sep	40.6 C (105.1 F)	13.9 C (57.0 F)	n/a	n/a
Oct	41.7 C (107.1 F)	12.2 C (54.0 F)	n/a	n/a
Nov	39.4 C (102.9 F)	10.0 C (50.0 F)	n/a	n/a
Dec	38.9 C (102.0 F)	5.0 C (41.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Mexcaltitan still stand. 1986 holds the most, with 152.

Standing records at Mexcaltitan by the year they were set
Year set	Standing records
1970	4
1971	17
1972	46
1973	29
1974	10
1975	7
1976	24
1977	13
1978	19
1979	9
1980	16
1981	34
1982	19
1983	20
1984	23
1985	14
1986	152
1987	147
1988	105
1989	125
1990	76
1991	60
1992	20
1993	4
1994	5
1995	12
1996	20
1997	51
1998	33
1999	8
2000	15
2001	17
2002	7
2003	44
2004	20
2005	16
2006	40
2007	19
2008	9
2009	27
2010	8
2011	34
2012	45
2013	41

All-Time Record Progression

1 new records

1 all-time records were set at Mexcaltitan between 4 October 2006 and 4 October 2006. Each dot is a new record.

Wettest Day of Each Month

Aug: 240.3 mm (9.5 in)

The wettest day on record for each calendar month at Mexcaltitan. The most was 240.3 mm (9.5 in) on 4 August 1998.

Record daily precipitation for each month at Mexcaltitan
Month	Record daily precipitation (mm)	Date
Jan	78.5 mm (3.1 in)	12 January 1987
Feb	55.1 mm (2.2 in)	25 February 1987
Mar	14.5 mm (0.6 in)	21 March 1997
Apr	12.7 mm (0.5 in)	13 April 1997
May	55.1 mm (2.2 in)	27 May 1983
Jun	142.0 mm (5.6 in)	28 June 2000
Jul	180.1 mm (7.1 in)	14 July 1978
Aug	240.3 mm (9.5 in)	4 August 1998
Sep	188.0 mm (7.4 in)	16 September 2013
Oct	160.3 mm (6.3 in)	26 October 2002
Nov	135.6 mm (5.3 in)	23 November 1972
Dec	95.3 mm (3.8 in)	24 December 1976

Period of Record Coverage

1970 to 2013

44 years of record at Mexcaltitan, 1970 to 2013. 6 years have data for under 90 percent of days and are left out of rankings: 1970, 1974, 1975, 1979, 1984, 1985.

Days with data per year at Mexcaltitan
Year	Days with data	Share of year	Complete
1970	144	39%	No
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	304	83%	No
1975	304	83%	No
1976	365	100%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	213	58%	No
1980	335	92%	Yes
1981	365	100%	Yes
1982	335	92%	Yes
1983	365	100%	Yes
1984	306	84%	No
1985	274	75%	No
1986	365	100%	Yes
1987	365	100%	Yes
1988	366	100%	Yes
1989	365	100%	Yes
1990	365	100%	Yes
1991	365	100%	Yes
1992	364	99%	Yes
1993	335	92%	Yes
1994	365	100%	Yes
1995	365	100%	Yes
1996	366	100%	Yes
1997	365	100%	Yes
1998	365	100%	Yes
1999	365	100%	Yes
2000	366	100%	Yes
2001	335	92%	Yes
2002	365	100%	Yes
2003	365	100%	Yes
2004	366	100%	Yes
2005	364	100%	Yes
2006	365	100%	Yes
2007	365	100%	Yes
2008	366	100%	Yes
2009	365	100%	Yes
2010	364	100%	Yes
2011	365	100%	Yes
2012	366	100%	Yes
2013	334	92%	Yes

Latest Records

Latest records at Mexcaltitan
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 December 2013	Mexcaltitan, MX	daily high max	36.7 C (98.1 F)	2.3 C (4.1 F)	22 years	18 of 100 (Routine)
29 December 2013	Mexcaltitan, MX	daily high max	37.8 C (100.0 F)	3.9 C (7.0 F)	22 years	24 of 100 (Routine)
28 December 2013	Mexcaltitan, MX	monthly high max (Tie)	38.9 C (102.0 F)	tie	9 years	4 of 100 (Routine)
23 December 2013	Mexcaltitan, MX	daily high max	35.0 C (95.0 F)	1.1 C (2.0 F)	0 years	8 of 100 (Routine)
21 December 2013	Mexcaltitan, MX	daily high min (Tie)	20.0 C (68.0 F)	tie	28 years	3 of 100 (Routine)
20 December 2013	Mexcaltitan, MX	daily high min (Tie)	20.0 C (68.0 F)	tie	28 years	3 of 100 (Routine)
19 December 2013	Mexcaltitan, MX	daily rain	2.8 mm (0.11 in)	0.8 mm (0.03 in)	16 years	8 of 100 (Routine)
18 December 2013	Mexcaltitan, MX	daily high max (Tie)	35.0 C (95.0 F)	tie	12 years	1 of 100 (Routine)
17 December 2013	Mexcaltitan, MX	daily high max	36.7 C (98.1 F)	1.7 C (3.1 F)	22 years	16 of 100 (Routine)
15 December 2013	Mexcaltitan, MX	daily high max	35.6 C (96.1 F)	0.6 C (1.1 F)	12 years	9 of 100 (Routine)
14 December 2013	Mexcaltitan, MX	daily high max (Tie)	35.0 C (95.0 F)	tie	8 years	1 of 100 (Routine)
13 December 2013	Mexcaltitan, MX	daily high max	35.0 C (95.0 F)	0.6 C (1.1 F)	8 years	8 of 100 (Routine)
12 December 2013	Mexcaltitan, MX	daily high max	35.6 C (96.1 F)	0.6 C (1.1 F)	36 years	16 of 100 (Routine)
5 December 2013	Mexcaltitan, MX	daily high max	35.6 C (96.1 F)	0.6 C (1.1 F)	35 years	16 of 100 (Routine)
3 December 2013	Mexcaltitan, MX	daily high max (Tie)	35.0 C (95.0 F)	tie	10 years	1 of 100 (Routine)
25 November 2013	Mexcaltitan, MX	daily high min (Tie)	22.8 C (73.0 F)	tie	23 years	2 of 100 (Routine)
20 November 2013	Mexcaltitan, MX	daily high max (Tie)	35.6 C (96.1 F)	tie	3 years	1 of 100 (Routine)
12 November 2013	Mexcaltitan, MX	daily high min (Tie)	23.9 C (75.0 F)	tie	32 years	3 of 100 (Routine)
7 November 2013	Mexcaltitan, MX	daily rain	11.9 mm (0.5 in)	11.1 mm (0.4 in)	16 years	11 of 100 (Routine)
6 November 2013	Mexcaltitan, MX	daily high max	38.9 C (102.0 F)	1.1 C (2.0 F)	8 years	9 of 100 (Routine)

Climate Trend

31 complete years, 1971 to 2012

One stripe for each of 31 complete years at Mexcaltitan, 1971 to 2012. Blue stripes are years cooler than the station's own mean of 26.2 C (79.1 F); red stripes are warmer. The coolest year was 1987, at 21.8 C (71.2 F), and the warmest was 2012, at 28.0 C (82.4 F). The strongest colour marks a difference of 4.5 C (8.1 F).

Annual mean temperature at Mexcaltitan as warming stripes, 1971 to 2012
Year	Annual mean temperature	Difference from the station mean
1971	26.4 C	+0.19 C
1972	27.3 C	+1.17 C
1973	26.4 C	+0.28 C
1976	26.7 C	+0.52 C
1977	26.9 C	+0.76 C
1978	27.0 C	+0.82 C
1981	25.8 C	-0.40 C
1983	26.0 C	-0.21 C
1986	22.2 C	-3.96 C
1987	21.8 C	-4.40 C
1988	22.5 C	-3.63 C
1989	21.8 C	-4.38 C
1990	22.6 C	-3.56 C
1991	27.3 C	+1.09 C
1992	26.4 C	+0.20 C
1994	25.4 C	-0.77 C
1995	27.0 C	+0.88 C
1996	27.3 C	+1.17 C
1997	27.2 C	+1.00 C
2000	26.5 C	+0.33 C
2002	27.4 C	+1.21 C
2003	27.8 C	+1.67 C
2004	27.2 C	+1.05 C
2005	27.1 C	+0.93 C
2006	27.7 C	+1.57 C
2007	27.1 C	+0.89 C
2008	27.0 C	+0.79 C
2009	27.5 C	+1.38 C
2010	26.6 C	+0.40 C
2011	27.5 C	+1.30 C
2012	28.0 C	+1.82 C

The fitted trend in annual mean temperature here over 1971 to 2012 is 0.5 C (-0.1 to 1.0) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.9 F (-0.1 to 1.8) per decade. The slope is a straight line fitted to 31 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Mexcaltitan
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.5 C (-0.1 to 1.0) per decade	0.9 F (-0.1 to 1.8) per decade	1971 to 2012	31	Not clearly different from zero
Mean daily maximum	0.7 C (0.2 to 1.1) per decade	1.2 F (0.3 to 2.0) per decade	1971 to 2012	31	Rise
Mean daily minimum	0.3 C (-0.4 to 1.0) per decade	0.5 F (-0.6 to 1.7) per decade	1971 to 2012	31	Not clearly different from zero

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 2013

Yearly extremes at Mexcaltitan: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	41.7 C (107.1 F)	1995	38.9 C (102.0 F)	44
Coldest night (TNn)	1.7 C (35.1 F)	1988	11.7 C (53.1 F)	44
Wettest day (Rx1day)	240.3 mm (9.5 in)	1998	110.2 mm (4.3 in)	45
Wettest five days (Rx5day)	332.6 mm (13.1 in)	2008	186.4 mm (7.3 in)	45
Longest dry spell (CDD)	189 days	2006	130 days	45

Hottest day (TXx)

The hottest day of the year at Mexcaltitan, 1969 to 2013. The record is 41.7 C (107.1 F) in 1995, marked on the chart; the median year is 38.9 C (102.0 F).

Hottest day (TXx) at Mexcaltitan by year
Year	Hottest day (TXx)
1969	n/a
1970	37.8 C (100.0 F)
1971	38.3 C (100.9 F)
1972	40.0 C (104.0 F)
1973	38.9 C (102.0 F)
1974	38.9 C (102.0 F)
1975	39.4 C (102.9 F)
1976	38.9 C (102.0 F)
1977	38.9 C (102.0 F)
1978	39.4 C (102.9 F)
1979	37.8 C (100.0 F)
1980	37.8 C (100.0 F)
1981	38.9 C (102.0 F)
1982	37.8 C (100.0 F)
1983	37.8 C (100.0 F)
1984	38.9 C (102.0 F)
1985	35.6 C (96.1 F)
1986	37.8 C (100.0 F)
1987	35.0 C (95.0 F)
1988	35.0 C (95.0 F)
1989	35.6 C (96.1 F)
1990	37.2 C (99.0 F)
1991	36.7 C (98.1 F)
1992	37.8 C (100.0 F)
1993	33.9 C (93.0 F)
1994	37.8 C (100.0 F)
1995	41.7 C (107.1 F)
1996	37.8 C (100.0 F)
1997	40.0 C (104.0 F)
1998	37.8 C (100.0 F)
1999	37.8 C (100.0 F)
2000	38.9 C (102.0 F)
2001	40.0 C (104.0 F)
2002	38.3 C (100.9 F)
2003	40.0 C (104.0 F)
2004	38.9 C (102.0 F)
2005	38.9 C (102.0 F)
2006	40.6 C (105.1 F)
2007	38.9 C (102.0 F)
2008	40.0 C (104.0 F)
2009	38.9 C (102.0 F)
2010	38.9 C (102.0 F)
2011	40.6 C (105.1 F)
2012	40.6 C (105.1 F)
2013	40.6 C (105.1 F)

Coldest night (TNn)

The coldest night of the year at Mexcaltitan, 1969 to 2013. The record is 1.7 C (35.1 F) in 1988, marked on the chart; the median year is 11.7 C (53.1 F).

Coldest night (TNn) at Mexcaltitan by year
Year	Coldest night (TNn)
1969	n/a
1970	15.0 C (59.0 F)
1971	11.1 C (52.0 F)
1972	12.2 C (54.0 F)
1973	11.7 C (53.1 F)
1974	10.6 C (51.1 F)
1975	11.7 C (53.1 F)
1976	12.2 C (54.0 F)
1977	13.9 C (57.0 F)
1978	13.3 C (55.9 F)
1979	11.7 C (53.1 F)
1980	11.7 C (53.1 F)
1981	11.7 C (53.1 F)
1982	10.6 C (51.1 F)
1983	13.9 C (57.0 F)
1984	11.7 C (53.1 F)
1985	11.7 C (53.1 F)
1986	5.0 C (41.0 F)
1987	5.6 C (42.1 F)
1988	1.7 C (35.1 F)
1989	6.1 C (43.0 F)
1990	3.9 C (39.0 F)
1991	11.7 C (53.1 F)
1992	13.9 C (57.0 F)
1993	15.0 C (59.0 F)
1994	15.6 C (60.1 F)
1995	15.0 C (59.0 F)
1996	12.8 C (55.0 F)
1997	11.7 C (53.1 F)
1998	15.6 C (60.1 F)
1999	12.8 C (55.0 F)
2000	10.6 C (51.1 F)
2001	10.0 C (50.0 F)
2002	11.7 C (53.1 F)
2003	12.8 C (55.0 F)
2004	11.7 C (53.1 F)
2005	13.9 C (57.0 F)
2006	10.0 C (50.0 F)
2007	11.7 C (53.1 F)
2008	10.6 C (51.1 F)
2009	15.0 C (59.0 F)
2010	11.7 C (53.1 F)
2011	8.9 C (48.0 F)
2012	13.9 C (57.0 F)
2013	11.7 C (53.1 F)

Wettest day (Rx1day)

The wettest day of the year at Mexcaltitan, 1969 to 2013. The record is 240.3 mm (9.5 in) in 1998, marked on the chart; the median year is 110.2 mm (4.3 in).

Wettest day (Rx1day) at Mexcaltitan by year
Year	Wettest day (Rx1day)
1969	105.2 mm (4.1 in)
1970	110.2 mm (4.3 in)
1971	68.3 mm (2.7 in)
1972	135.6 mm (5.3 in)
1973	160.3 mm (6.3 in)
1974	70.4 mm (2.8 in)
1975	136.1 mm (5.4 in)
1976	113.3 mm (4.5 in)
1977	95.5 mm (3.8 in)
1978	180.1 mm (7.1 in)
1979	15.5 mm (0.6 in)
1980	110.7 mm (4.4 in)
1981	49.5 mm (1.9 in)
1982	101.9 mm (4.0 in)
1983	119.9 mm (4.7 in)
1984	126.5 mm (5.0 in)
1985	83.1 mm (3.3 in)
1986	52.6 mm (2.1 in)
1987	78.5 mm (3.1 in)
1988	64.3 mm (2.5 in)
1989	84.8 mm (3.3 in)
1990	76.7 mm (3.0 in)
1991	60.5 mm (2.4 in)
1992	62.2 mm (2.4 in)
1993	170.2 mm (6.7 in)
1994	105.4 mm (4.1 in)
1995	75.2 mm (3.0 in)
1996	80.3 mm (3.2 in)
1997	120.1 mm (4.7 in)
1998	240.3 mm (9.5 in)
1999	125.2 mm (4.9 in)
2000	180.1 mm (7.1 in)
2001	114.8 mm (4.5 in)
2002	160.3 mm (6.3 in)
2003	135.4 mm (5.3 in)
2004	114.8 mm (4.5 in)
2005	100.8 mm (4.0 in)
2006	130.0 mm (5.1 in)
2007	101.1 mm (4.0 in)
2008	179.8 mm (7.1 in)
2009	85.6 mm (3.4 in)
2010	180.1 mm (7.1 in)
2011	95.0 mm (3.7 in)
2012	119.9 mm (4.7 in)
2013	188.0 mm (7.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Mexcaltitan, 1969 to 2013. The record is 332.6 mm (13.1 in) in 2008, marked on the chart; the median year is 186.4 mm (7.3 in).

Wettest five days (Rx5day) at Mexcaltitan by year
Year	Wettest five days (Rx5day)
1969	213.9 mm (8.4 in)
1970	171.4 mm (6.7 in)
1971	168.1 mm (6.6 in)
1972	262.6 mm (10.3 in)
1973	331.5 mm (13.1 in)
1974	101.8 mm (4.0 in)
1975	166.3 mm (6.5 in)
1976	272.3 mm (10.7 in)
1977	126.4 mm (5.0 in)
1978	276.6 mm (10.9 in)
1979	26.5 mm (1.0 in)
1980	175.3 mm (6.9 in)
1981	86.2 mm (3.4 in)
1982	112.1 mm (4.4 in)
1983	186.4 mm (7.3 in)
1984	156.7 mm (6.2 in)
1985	171.0 mm (6.7 in)
1986	91.7 mm (3.6 in)
1987	155.9 mm (6.1 in)
1988	154.7 mm (6.1 in)
1989	112.0 mm (4.4 in)
1990	147.3 mm (5.8 in)
1991	216.8 mm (8.5 in)
1992	183.3 mm (7.2 in)
1993	229.2 mm (9.0 in)
1994	190.5 mm (7.5 in)
1995	129.3 mm (5.1 in)
1996	139.0 mm (5.5 in)
1997	268.7 mm (10.6 in)
1998	301.3 mm (11.9 in)
1999	261.2 mm (10.3 in)
2000	243.6 mm (9.6 in)
2001	233.5 mm (9.2 in)
2002	186.0 mm (7.3 in)
2003	210.4 mm (8.3 in)
2004	217.5 mm (8.6 in)
2005	212.4 mm (8.4 in)
2006	188.9 mm (7.4 in)
2007	183.1 mm (7.2 in)
2008	332.6 mm (13.1 in)
2009	138.7 mm (5.5 in)
2010	252.7 mm (9.9 in)
2011	236.5 mm (9.3 in)
2012	277.6 mm (10.9 in)
2013	282.6 mm (11.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at Mexcaltitan, 1969 to 2013. The record is 189 days in 2006, marked on the chart; the median year is 130 days.

Longest dry spell (CDD) at Mexcaltitan by year
Year	Longest dry spell (CDD)
1969	60 days
1970	118 days
1971	144 days
1972	155 days
1973	118 days
1974	146 days
1975	132 days
1976	161 days
1977	156 days
1978	90 days
1979	101 days
1980	77 days
1981	115 days
1982	151 days
1983	81 days
1984	106 days
1985	99 days
1986	177 days
1987	79 days
1988	146 days
1989	166 days
1990	116 days
1991	175 days
1992	95 days
1993	123 days
1994	177 days
1995	171 days
1996	170 days
1997	46 days
1998	130 days
1999	124 days
2000	163 days
2001	105 days
2002	110 days
2003	179 days
2004	101 days
2005	124 days
2006	189 days
2007	156 days
2008	161 days
2009	168 days
2010	119 days
2011	176 days
2012	120 days
2013	157 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.

Rainfall Return Levels

40 years, 1969 to 2013

A day with at least 109.3 mm (4.3 in) of rain is expected about once in 2 years. A day with at least 250.4 mm (9.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Mexcaltitan: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	109.3 mm (4.3 in)
5 years	149.2 mm (5.9 in)
10 years	174.7 mm (6.9 in)
25 years	206.0 mm (8.1 in)
50 years	228.6 mm (9.0 in)	Longer than the 40 years of record
100 years	250.4 mm (9.9 in)	Longer than the 40 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 40 years of values from 1969 to 2013.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 240.3 mm (9.5 in) in 1998; 188.0 mm (7.4 in) in 2013; 180.1 mm (7.1 in) in 1978.

Download the Data

Data for Mexcaltitan standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Mexcaltitan 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).