Sontecomapan Weather Records (MXN00030294)

Record envelope, standing records and threshold days for Sontecomapan (MXN00030294), Mexico, with 37 years of record.

Key Facts for Sontecomapan

Sontecomapan (MXN00030294) is a weather station in Mexico at 18.50 latitude and -95.03 longitude, 11 m (36 ft) above sea level.
The station reports from 1975 to 2011, 37 years of record.
1,464 records set at Sontecomapan still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Sontecomapan set a daily record low maximum temperature of 18.3 C (64.9 F) on 7 December 2011.

About the Station

Location: Mexico, 18.50 latitude, -95.03 longitude.
Elevation: 11 m (36 ft).
Period of record: 1975 to 2011, 37 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 Sontecomapan. 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 Sontecomapan, 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)	10.0 C (50.0 F)	n/a	n/a
Feb	35.6 C (96.1 F)	10.6 C (51.1 F)	n/a	n/a
Mar	40.0 C (104.0 F)	10.6 C (51.1 F)	n/a	n/a
Apr	40.0 C (104.0 F)	11.7 C (53.1 F)	n/a	n/a
May	42.8 C (109.0 F)	15.0 C (59.0 F)	n/a	n/a
Jun	40.6 C (105.1 F)	17.8 C (64.0 F)	n/a	n/a
Jul	36.1 C (97.0 F)	18.9 C (66.0 F)	n/a	n/a
Aug	36.7 C (98.1 F)	18.9 C (66.0 F)	n/a	n/a
Sep	36.1 C (97.0 F)	16.7 C (62.1 F)	n/a	n/a
Oct	35.6 C (96.1 F)	14.4 C (57.9 F)	n/a	n/a
Nov	34.4 C (93.9 F)	10.0 C (50.0 F)	n/a	n/a
Dec	35.6 C (96.1 F)	9.4 C (48.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Sontecomapan still stand. 1984 holds the most, with 79.

Standing records at Sontecomapan by the year they were set
Year set	Standing records
1975	6
1976	63
1977	39
1978	51
1979	69
1980	43
1981	39
1982	43
1983	39
1984	79
1985	25
1986	38
1987	39
1988	27
1989	48
1990	20
1991	43
1992	31
1993	32
1994	26
1995	49
1996	39
1997	46
1998	63
1999	43
2000	23
2001	29
2002	24
2004	37
2005	26
2006	39
2007	48
2008	24
2009	44
2010	64
2011	66

Wettest Day of Each Month

Oct: 382.3 mm (15.1 in)

The wettest day on record for each calendar month at Sontecomapan. The most was 382.3 mm (15.1 in) on 6 October 1991.

Record daily precipitation for each month at Sontecomapan
Month	Record daily precipitation (mm)	Date
Jan	226.8 mm (8.9 in)	13 January 1989
Feb	106.7 mm (4.2 in)	3 February 2007
Mar	147.3 mm (5.8 in)	1 March 1982
Apr	113.8 mm (4.5 in)	9 April 1985
May	204.0 mm (8.0 in)	30 May 1984
Jun	252.0 mm (9.9 in)	15 June 1977
Jul	262.4 mm (10.3 in)	14 July 1981
Aug	310.9 mm (12.2 in)	9 August 1986
Sep	364.5 mm (14.4 in)	17 September 2000
Oct	382.3 mm (15.1 in)	6 October 1991
Nov	305.3 mm (12.0 in)	15 November 1997
Dec	155.2 mm (6.1 in)	29 December 1984

Period of Record Coverage

1975 to 2011

36 years of record at Sontecomapan, 1975 to 2011. 6 years have data for under 90 percent of days and are left out of rankings: 1975, 1988, 1990, 2002, 2005, 2008.

Days with data per year at Sontecomapan
Year	Days with data	Share of year	Complete
1975	29	8%	No
1976	365	100%	Yes
1977	362	99%	Yes
1978	362	99%	Yes
1979	333	91%	Yes
1980	359	98%	Yes
1981	364	100%	Yes
1982	362	99%	Yes
1983	332	91%	Yes
1984	362	99%	Yes
1985	362	99%	Yes
1986	362	99%	Yes
1987	332	91%	Yes
1988	300	82%	No
1989	330	90%	Yes
1990	271	74%	No
1991	364	100%	Yes
1992	365	100%	Yes
1993	362	99%	Yes
1994	362	99%	Yes
1995	362	99%	Yes
1996	363	99%	Yes
1997	362	99%	Yes
1998	364	100%	Yes
1999	361	99%	Yes
2000	365	100%	Yes
2001	364	100%	Yes
2002	300	82%	No
2004	364	99%	Yes
2005	303	83%	No
2006	364	100%	Yes
2007	361	99%	Yes
2008	241	66%	No
2009	361	99%	Yes
2010	363	99%	Yes
2011	363	99%	Yes

Latest Records

Latest records at Sontecomapan
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
7 December 2011	Sontecomapan, MX	daily low max	18.3 C (64.9 F)	0.6 C (1.1 F)	26 years	12 of 100 (Routine)
5 December 2011	Sontecomapan, MX	daily low min (Tie)	14.4 C (57.9 F)	tie	0 years	0 of 100 (Routine)
2 December 2011	Sontecomapan, MX	daily low min	13.9 C (57.0 F)	1.1 C (2.0 F)	0 years	7 of 100 (Routine)
1 December 2011	Sontecomapan, MX	daily low min	12.2 C (54.0 F)	2.8 C (5.0 F)	30 years	24 of 100 (Routine)
30 November 2011	Sontecomapan, MX	daily low min	10.6 C (51.1 F)	2.2 C (4.0 F)	24 years	21 of 100 (Routine)
29 November 2011	Sontecomapan, MX	monthly low min	10.0 C (50.0 F)	2.8 C (5.0 F)	24 years	34 of 100 (Routine)
28 November 2011	Sontecomapan, MX	monthly low min (Tie)	12.8 C (55.0 F)	tie	24 years	5 of 100 (Routine)
27 November 2011	Sontecomapan, MX	daily low max	20.6 C (69.1 F)	0.5 C (0.9 F)	17 years	9 of 100 (Routine)
26 November 2011	Sontecomapan, MX	daily low min (Tie)	15.0 C (59.0 F)	tie	16 years	1 of 100 (Routine)
17 November 2011	Sontecomapan, MX	daily rain	203.2 mm (8.0 in)	145.0 mm (5.7 in)	5 years	44 of 100 (Notable)
17 November 2011	Sontecomapan, MX	daily high min	21.7 C (71.1 F)	0.6 C (1.1 F)	32 years	15 of 100 (Routine)
12 November 2011	Sontecomapan, MX	daily low min	15.0 C (59.0 F)	0.6 C (1.1 F)	20 years	12 of 100 (Routine)
11 November 2011	Sontecomapan, MX	daily low max	19.4 C (66.9 F)	0.6 C (1.1 F)	24 years	12 of 100 (Routine)
11 November 2011	Sontecomapan, MX	daily low min (Tie)	15.0 C (59.0 F)	tie	0 years	0 of 100 (Routine)
31 October 2011	Sontecomapan, MX	daily low min (Tie)	16.1 C (61.0 F)	tie	30 years	3 of 100 (Routine)
29 October 2011	Sontecomapan, MX	daily rain	79.0 mm (3.1 in)	45.5 mm (1.8 in)	28 years	20 of 100 (Routine)
28 October 2011	Sontecomapan, MX	daily low min (Tie)	16.7 C (62.1 F)	tie	4 years	1 of 100 (Routine)
27 October 2011	Sontecomapan, MX	daily low min	15.6 C (60.1 F)	0.5 C (0.9 F)	4 years	6 of 100 (Routine)
23 October 2011	Sontecomapan, MX	daily low min (Tie)	16.7 C (62.1 F)	tie	32 years	3 of 100 (Routine)
22 October 2011	Sontecomapan, MX	daily low min	15.0 C (59.0 F)	0.6 C (1.1 F)	21 years	12 of 100 (Routine)

Climate Trend

26 complete years, 1976 to 2011

One stripe for each of 26 complete years at Sontecomapan, 1976 to 2011. Blue stripes are years cooler than the station's own mean of 24.3 C (75.7 F); red stripes are warmer. The coolest year was 1976, at 23.5 C (74.4 F), and the warmest was 1998, at 25.0 C (77.1 F). The strongest colour marks a difference of 0.8 C (1.4 F).

Annual mean temperature at Sontecomapan as warming stripes, 1976 to 2011
Year	Annual mean temperature	Difference from the station mean
1976	23.5 C	-0.72 C
1977	23.9 C	-0.31 C
1978	24.0 C	-0.21 C
1980	24.1 C	-0.19 C
1981	24.0 C	-0.28 C
1982	24.4 C	+0.15 C
1984	23.9 C	-0.39 C
1985	24.0 C	-0.26 C
1986	24.0 C	-0.28 C
1991	24.7 C	+0.45 C
1992	24.0 C	-0.25 C
1993	24.2 C	-0.05 C
1994	24.4 C	+0.13 C
1995	25.0 C	+0.74 C
1996	24.2 C	-0.05 C
1997	24.3 C	+0.07 C
1998	25.0 C	+0.79 C
1999	24.1 C	-0.11 C
2000	24.1 C	-0.11 C
2001	24.0 C	-0.28 C
2004	24.4 C	+0.11 C
2006	24.3 C	+0.05 C
2007	25.0 C	+0.77 C
2009	24.7 C	+0.42 C
2010	23.9 C	-0.38 C
2011	24.5 C	+0.23 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

1975 to 2011

Yearly extremes at Sontecomapan: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	42.8 C (109.0 F)	1995	37.8 C (100.0 F)	36
Coldest night (TNn)	9.4 C (48.9 F)	1997	11.7 C (53.1 F)	36
Wettest day (Rx1day)	382.3 mm (15.1 in)	1991	202.3 mm (8.0 in)	36
Wettest five days (Rx5day)	873.6 mm (34.4 in)	1991	376.1 mm (14.8 in)	36
Longest dry spell (CDD)	44 days	1998	20 days	36

Hottest day (TXx)

The hottest day of the year at Sontecomapan, 1975 to 2011. The record is 42.8 C (109.0 F) in 1995, marked on the chart; the median year is 37.8 C (100.0 F).

Hottest day (TXx) at Sontecomapan by year
Year	Hottest day (TXx)
1975	30.6 C (87.1 F)
1976	39.4 C (102.9 F)
1977	37.8 C (100.0 F)
1978	38.9 C (102.0 F)
1979	38.3 C (100.9 F)
1980	38.9 C (102.0 F)
1981	37.8 C (100.0 F)
1982	37.8 C (100.0 F)
1983	40.0 C (104.0 F)
1984	40.0 C (104.0 F)
1985	36.1 C (97.0 F)
1986	37.2 C (99.0 F)
1987	37.8 C (100.0 F)
1988	37.8 C (100.0 F)
1989	38.9 C (102.0 F)
1990	38.3 C (100.9 F)
1991	40.0 C (104.0 F)
1992	36.1 C (97.0 F)
1993	37.8 C (100.0 F)
1994	37.2 C (99.0 F)
1995	42.8 C (109.0 F)
1996	37.8 C (100.0 F)
1997	36.7 C (98.1 F)
1998	40.6 C (105.1 F)
1999	38.9 C (102.0 F)
2000	37.8 C (100.0 F)
2001	36.7 C (98.1 F)
2002	37.8 C (100.0 F)
2004	36.7 C (98.1 F)
2005	37.8 C (100.0 F)
2006	36.7 C (98.1 F)
2007	40.0 C (104.0 F)
2008	38.3 C (100.9 F)
2009	38.9 C (102.0 F)
2010	38.9 C (102.0 F)
2011	40.0 C (104.0 F)

Coldest night (TNn)

The coldest night of the year at Sontecomapan, 1975 to 2011. The record is 9.4 C (48.9 F) in 1997, marked on the chart; the median year is 11.7 C (53.1 F).

Coldest night (TNn) at Sontecomapan by year
Year	Coldest night (TNn)
1975	11.7 C (53.1 F)
1976	10.0 C (50.0 F)
1977	10.6 C (51.1 F)
1978	12.2 C (54.0 F)
1979	11.7 C (53.1 F)
1980	12.2 C (54.0 F)
1981	11.7 C (53.1 F)
1982	12.8 C (55.0 F)
1983	10.6 C (51.1 F)
1984	12.8 C (55.0 F)
1985	11.1 C (52.0 F)
1986	10.6 C (51.1 F)
1987	11.1 C (52.0 F)
1988	12.8 C (55.0 F)
1989	10.0 C (50.0 F)
1990	12.8 C (55.0 F)
1991	12.8 C (55.0 F)
1992	12.2 C (54.0 F)
1993	12.8 C (55.0 F)
1994	12.8 C (55.0 F)
1995	13.9 C (57.0 F)
1996	10.0 C (50.0 F)
1997	9.4 C (48.9 F)
1998	11.7 C (53.1 F)
1999	12.2 C (54.0 F)
2000	11.7 C (53.1 F)
2001	12.2 C (54.0 F)
2002	11.1 C (52.0 F)
2004	13.3 C (55.9 F)
2005	12.8 C (55.0 F)
2006	10.6 C (51.1 F)
2007	12.8 C (55.0 F)
2008	11.7 C (53.1 F)
2009	11.7 C (53.1 F)
2010	10.0 C (50.0 F)
2011	10.0 C (50.0 F)

Wettest day (Rx1day)

The wettest day of the year at Sontecomapan, 1975 to 2011. The record is 382.3 mm (15.1 in) in 1991, marked on the chart; the median year is 202.3 mm (8.0 in).

Wettest day (Rx1day) at Sontecomapan by year
Year	Wettest day (Rx1day)
1975	59.4 mm (2.3 in)
1976	191.3 mm (7.5 in)
1977	255.3 mm (10.1 in)
1978	237.2 mm (9.3 in)
1979	149.4 mm (5.9 in)
1980	203.5 mm (8.0 in)
1981	280.9 mm (11.1 in)
1982	178.8 mm (7.0 in)
1983	201.4 mm (7.9 in)
1984	229.4 mm (9.0 in)
1985	124.7 mm (4.9 in)
1986	310.9 mm (12.2 in)
1987	253.7 mm (10.0 in)
1988	181.9 mm (7.2 in)
1989	274.3 mm (10.8 in)
1990	182.9 mm (7.2 in)
1991	382.3 mm (15.1 in)
1992	307.8 mm (12.1 in)
1993	205.7 mm (8.1 in)
1994	140.0 mm (5.5 in)
1995	153.7 mm (6.1 in)
1996	193.0 mm (7.6 in)
1997	305.3 mm (12.0 in)
1998	158.5 mm (6.2 in)
1999	247.4 mm (9.7 in)
2000	364.5 mm (14.4 in)
2001	337.1 mm (13.3 in)
2002	144.3 mm (5.7 in)
2004	309.4 mm (12.2 in)
2005	151.1 mm (5.9 in)
2006	181.1 mm (7.1 in)
2007	186.2 mm (7.3 in)
2008	214.6 mm (8.4 in)
2009	196.6 mm (7.7 in)
2010	142.7 mm (5.6 in)
2011	203.2 mm (8.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Sontecomapan, 1975 to 2011. The record is 873.6 mm (34.4 in) in 1991, marked on the chart; the median year is 376.1 mm (14.8 in).

Wettest five days (Rx5day) at Sontecomapan by year
Year	Wettest five days (Rx5day)
1975	125.2 mm (4.9 in)
1976	369.8 mm (14.6 in)
1977	382.4 mm (15.1 in)
1978	354.4 mm (14.0 in)
1979	287.8 mm (11.3 in)
1980	326.5 mm (12.9 in)
1981	469.6 mm (18.5 in)
1982	404.9 mm (15.9 in)
1983	327.7 mm (12.9 in)
1984	553.0 mm (21.8 in)
1985	317.0 mm (12.5 in)
1986	444.1 mm (17.5 in)
1987	347.2 mm (13.7 in)
1988	461.5 mm (18.2 in)
1989	506.5 mm (19.9 in)
1990	360.8 mm (14.2 in)
1991	873.6 mm (34.4 in)
1992	540.1 mm (21.3 in)
1993	564.6 mm (22.2 in)
1994	218.0 mm (8.6 in)
1995	402.2 mm (15.8 in)
1996	318.8 mm (12.6 in)
1997	626.1 mm (24.6 in)
1998	328.5 mm (12.9 in)
1999	576.1 mm (22.7 in)
2000	492.0 mm (19.4 in)
2001	523.8 mm (20.6 in)
2002	262.2 mm (10.3 in)
2004	478.5 mm (18.8 in)
2005	281.1 mm (11.1 in)
2006	356.7 mm (14.0 in)
2007	239.8 mm (9.4 in)
2008	336.3 mm (13.2 in)
2009	431.1 mm (17.0 in)
2010	384.5 mm (15.1 in)
2011	310.9 mm (12.2 in)

Longest dry spell (CDD)

The longest dry spell of the year at Sontecomapan, 1975 to 2011. The record is 44 days in 1998, marked on the chart; the median year is 20 days.

Longest dry spell (CDD) at Sontecomapan by year
Year	Longest dry spell (CDD)
1975	4 days
1976	24 days
1977	22 days
1978	15 days
1979	20 days
1980	15 days
1981	19 days
1982	20 days
1983	40 days
1984	36 days
1985	15 days
1986	20 days
1987	42 days
1988	22 days
1989	20 days
1990	23 days
1991	20 days
1992	16 days
1993	18 days
1994	23 days
1995	36 days
1996	16 days
1997	12 days
1998	44 days
1999	27 days
2000	18 days
2001	27 days
2002	25 days
2004	12 days
2005	32 days
2006	16 days
2007	26 days
2008	17 days
2009	28 days
2010	17 days
2011	27 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

30 years, 1976 to 2011

A day with at least 220.1 mm (8.7 in) of rain is expected about once in 2 years. A day with at least 446.3 mm (17.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Sontecomapan: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	220.1 mm (8.7 in)
5 years	285.5 mm (11.2 in)
10 years	326.8 mm (12.9 in)
25 years	376.7 mm (14.8 in)
50 years	412.2 mm (16.2 in)	Longer than the 30 years of record
100 years	446.3 mm (17.6 in)	Longer than the 30 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, 30 years of values from 1976 to 2011.

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: 382.3 mm (15.1 in) in 1991; 364.5 mm (14.4 in) in 2000; 337.1 mm (13.3 in) in 2001.

Download the Data

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