Tonalapa del Sur Weather Records (MXN00012092)

Record envelope, standing records and threshold days for Tonalapa del Sur (MXN00012092), Mexico, with 48 years of record.

Key Facts for Tonalapa del Sur

Tonalapa del Sur (MXN00012092) is a weather station in Mexico at 18.08 latitude and -99.55 longitude, 720 m (2,362 ft) above sea level.
The station reports from 1966 to 2013, 48 years of record.
1,464 records set at Tonalapa del Sur still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Tonalapa del Sur set a daily record low minimum temperature of 15.6 C (60.1 F) on 23 June 2013.

About the Station

Location: Mexico, 18.08 latitude, -99.55 longitude.
Elevation: 720 m (2,362 ft).
Period of record: 1966 to 2013, 48 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 Tonalapa del Sur. 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 Tonalapa del Sur, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	39.4 C (102.9 F)	8.9 C (48.0 F)	n/a	n/a
Feb	41.1 C (106.0 F)	10.0 C (50.0 F)	n/a	n/a
Mar	42.2 C (108.0 F)	10.0 C (50.0 F)	n/a	n/a
Apr	44.4 C (111.9 F)	11.1 C (52.0 F)	n/a	n/a
May	43.3 C (109.9 F)	12.8 C (55.0 F)	n/a	n/a
Jun	42.2 C (108.0 F)	12.8 C (55.0 F)	n/a	n/a
Jul	39.4 C (102.9 F)	11.1 C (52.0 F)	n/a	n/a
Aug	40.0 C (104.0 F)	10.0 C (50.0 F)	n/a	n/a
Sep	41.1 C (106.0 F)	11.1 C (52.0 F)	n/a	n/a
Oct	39.4 C (102.9 F)	10.0 C (50.0 F)	n/a	n/a
Nov	39.4 C (102.9 F)	8.3 C (46.9 F)	n/a	n/a
Dec	38.3 C (100.9 F)	8.3 C (46.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Tonalapa del Sur still stand. 1981 holds the most, with 109.

Standing records at Tonalapa del Sur by the year they were set
Year set	Standing records
1973	62
1974	22
1975	36
1976	37
1977	60
1978	57
1979	33
1980	56
1981	109
1982	73
1983	27
1984	29
1985	14
1986	86
1987	68
1988	10
1989	19
1990	41
1992	43
1993	3
1996	99
1997	100
1998	30
1999	7
2000	15
2001	82
2002	11
2003	19
2004	7
2005	80
2006	22
2007	6
2008	35
2009	31
2010	22
2011	11
2013	2

Wettest Day of Each Month

Jun: 84.8 mm (3.3 in)

The wettest day on record for each calendar month at Tonalapa del Sur. The most was 84.8 mm (3.3 in) on 20 June 1974.

Record daily precipitation for each month at Tonalapa del Sur
Month	Record daily precipitation (mm)	Date
Jan	47.5 mm (1.9 in)	25 January 1980
Feb	9.9 mm (0.39 in)	6 February 1968
Mar	22.9 mm (0.9 in)	16 March 1978
Apr	31.8 mm (1.3 in)	5 April 1971
May	38.4 mm (1.5 in)	26 May 1974
Jun	84.8 mm (3.3 in)	20 June 1974
Jul	70.4 mm (2.8 in)	1 July 1983
Aug	73.9 mm (2.9 in)	9 August 1973
Sep	76.7 mm (3.0 in)	24 September 2003
Oct	52.6 mm (2.1 in)	22 October 1968
Nov	32.8 mm (1.3 in)	8 November 1983
Dec	25.4 mm (1.0 in)	3 December 1968

Period of Record Coverage

1972 to 2013

39 years of record at Tonalapa del Sur, 1972 to 2013. 15 years have data for under 90 percent of days and are left out of rankings: 1972, 1988, 1989, 1992, 1993, 1996, 1998, 1999 and others.

Days with data per year at Tonalapa del Sur
Year	Days with data	Share of year	Complete
1972	3	1%	No
1973	362	99%	Yes
1974	363	99%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	360	99%	Yes
1983	361	99%	Yes
1984	361	99%	Yes
1985	363	99%	Yes
1986	330	90%	Yes
1987	356	98%	Yes
1988	182	50%	No
1989	153	42%	No
1990	365	100%	Yes
1992	305	83%	No
1993	202	55%	No
1996	305	83%	No
1997	365	100%	Yes
1998	273	75%	No
1999	90	25%	No
2000	347	95%	Yes
2001	326	89%	No
2002	363	99%	Yes
2003	273	75%	No
2004	183	50%	No
2005	157	43%	No
2006	334	92%	Yes
2007	365	100%	Yes
2008	244	67%	No
2009	331	91%	Yes
2010	338	93%	Yes
2011	322	88%	No
2012	335	92%	Yes
2013	181	50%	No

Latest Records

Latest records at Tonalapa del Sur
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
23 June 2013	Tonalapa del Sur, MX	daily low min	15.6 C (60.1 F)	0.5 C (0.9 F)	32 years	15 of 100 (Routine)
22 June 2013	Tonalapa del Sur, MX	daily low max (Tie)	30.0 C (86.0 F)	tie	35 years	3 of 100 (Routine)
7 March 2013	Tonalapa del Sur, MX	daily low max (Tie)	30.0 C (86.0 F)	tie	26 years	2 of 100 (Routine)
20 February 2013	Tonalapa del Sur, MX	daily low max (Tie)	30.0 C (86.0 F)	tie	27 years	3 of 100 (Routine)
13 February 2013	Tonalapa del Sur, MX	daily high max (Tie)	36.1 C (97.0 F)	tie	35 years	3 of 100 (Routine)
11 February 2013	Tonalapa del Sur, MX	daily low max (Tie)	30.0 C (86.0 F)	tie	30 years	3 of 100 (Routine)
14 January 2013	Tonalapa del Sur, MX	daily high max (Tie)	36.1 C (97.0 F)	tie	3 years	1 of 100 (Routine)
13 January 2013	Tonalapa del Sur, MX	daily high max	35.0 C (95.0 F)	0.6 C (1.1 F)	35 years	16 of 100 (Routine)
24 November 2012	Tonalapa del Sur, MX	daily high max (Tie)	35.0 C (95.0 F)	tie	38 years	3 of 100 (Routine)
18 November 2012	Tonalapa del Sur, MX	daily high min (Tie)	20.6 C (69.1 F)	tie	12 years	1 of 100 (Routine)
29 October 2012	Tonalapa del Sur, MX	daily high max (Tie)	36.1 C (97.0 F)	tie	35 years	3 of 100 (Routine)
5 August 2012	Tonalapa del Sur, MX	daily high min (Tie)	21.1 C (70.0 F)	tie	31 years	3 of 100 (Routine)
5 April 2012	Tonalapa del Sur, MX	daily low max (Tie)	30.0 C (86.0 F)	tie	22 years	2 of 100 (Routine)
31 March 2012	Tonalapa del Sur, MX	daily low max (Tie)	30.0 C (86.0 F)	tie	22 years	2 of 100 (Routine)
31 December 2011	Tonalapa del Sur, MX	daily high max (Tie)	35.0 C (95.0 F)	tie	36 years	3 of 100 (Routine)
26 December 2011	Tonalapa del Sur, MX	daily high max	36.1 C (97.0 F)	1.1 C (2.0 F)	34 years	19 of 100 (Routine)
25 December 2011	Tonalapa del Sur, MX	daily high min	21.1 C (70.0 F)	0.5 C (0.9 F)	18 years	10 of 100 (Routine)
22 December 2011	Tonalapa del Sur, MX	daily high max (Tie)	34.4 C (93.9 F)	tie	1 year	1 of 100 (Routine)
16 December 2011	Tonalapa del Sur, MX	daily high min (Tie)	20.0 C (68.0 F)	tie	18 years	2 of 100 (Routine)
14 December 2011	Tonalapa del Sur, MX	daily high max (Tie)	35.0 C (95.0 F)	tie	36 years	3 of 100 (Routine)

Climate Trend

17 complete years, 1973 to 2007

One stripe for each of 17 complete years at Tonalapa del Sur, 1973 to 2007. Blue stripes are years cooler than the station's own mean of 25.5 C (77.9 F); red stripes are warmer. The coolest year was 1981, at 24.1 C (75.4 F), and the warmest was 1977, at 26.9 C (80.4 F). The strongest colour marks a difference of 1.5 C (2.7 F).

Annual mean temperature at Tonalapa del Sur as warming stripes, 1973 to 2007
Year	Annual mean temperature	Difference from the station mean
1973	26.1 C	+0.60 C
1974	25.8 C	+0.26 C
1975	26.3 C	+0.76 C
1976	26.7 C	+1.12 C
1977	26.9 C	+1.34 C
1978	25.5 C	-0.07 C
1979	25.0 C	-0.58 C
1980	24.9 C	-0.66 C
1981	24.1 C	-1.42 C
1982	26.4 C	+0.86 C
1983	24.7 C	-0.79 C
1984	25.2 C	-0.33 C
1985	25.2 C	-0.36 C
1987	26.3 C	+0.73 C
1990	24.4 C	-1.16 C
2002	24.9 C	-0.68 C
2007	25.9 C	+0.32 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

1966 to 2013

Yearly extremes at Tonalapa del Sur: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	44.4 C (111.9 F)	1982	38.9 C (102.0 F)	39
Coldest night (TNn)	8.3 C (46.9 F)	1980	10.6 C (51.1 F)	39
Wettest day (Rx1day)	84.8 mm (3.3 in)	1974	42.4 mm (1.7 in)	47
Wettest five days (Rx5day)	196.2 mm (7.7 in)	1968	90.2 mm (3.6 in)	47
Longest dry spell (CDD)	185 days	2012	105 days	47

Hottest day (TXx)

The hottest day of the year at Tonalapa del Sur, 1966 to 2013. The record is 44.4 C (111.9 F) in 1982, marked on the chart; the median year is 38.9 C (102.0 F).

Hottest day (TXx) at Tonalapa del Sur by year
Year	Hottest day (TXx)
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	30.0 C (86.0 F)
1973	41.7 C (107.1 F)
1974	40.0 C (104.0 F)
1975	42.2 C (108.0 F)
1976	43.3 C (109.9 F)
1977	42.8 C (109.0 F)
1978	42.8 C (109.0 F)
1979	38.3 C (100.9 F)
1980	41.1 C (106.0 F)
1981	39.4 C (102.9 F)
1982	44.4 C (111.9 F)
1983	40.0 C (104.0 F)
1984	39.4 C (102.9 F)
1985	38.9 C (102.0 F)
1986	41.1 C (106.0 F)
1987	41.1 C (106.0 F)
1988	40.0 C (104.0 F)
1989	33.3 C (91.9 F)
1990	37.8 C (100.0 F)
1992	40.0 C (104.0 F)
1993	38.3 C (100.9 F)
1994	n/a
1995	n/a
1996	38.9 C (102.0 F)
1997	39.4 C (102.9 F)
1998	41.1 C (106.0 F)
1999	38.3 C (100.9 F)
2000	38.3 C (100.9 F)
2001	39.4 C (102.9 F)
2002	37.2 C (99.0 F)
2003	41.1 C (106.0 F)
2004	36.1 C (97.0 F)
2005	38.3 C (100.9 F)
2006	36.1 C (97.0 F)
2007	36.1 C (97.0 F)
2008	37.2 C (99.0 F)
2009	37.2 C (99.0 F)
2010	38.3 C (100.9 F)
2011	37.2 C (99.0 F)
2012	37.2 C (99.0 F)
2013	36.1 C (97.0 F)

Coldest night (TNn)

The coldest night of the year at Tonalapa del Sur, 1966 to 2013. The record is 8.3 C (46.9 F) in 1980, marked on the chart; the median year is 10.6 C (51.1 F).

Coldest night (TNn) at Tonalapa del Sur by year
Year	Coldest night (TNn)
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	12.2 C (54.0 F)
1973	8.9 C (48.0 F)
1974	10.0 C (50.0 F)
1975	10.0 C (50.0 F)
1976	10.6 C (51.1 F)
1977	10.0 C (50.0 F)
1978	8.9 C (48.0 F)
1979	10.0 C (50.0 F)
1980	8.3 C (46.9 F)
1981	8.3 C (46.9 F)
1982	10.0 C (50.0 F)
1983	10.0 C (50.0 F)
1984	10.0 C (50.0 F)
1985	11.1 C (52.0 F)
1986	11.7 C (53.1 F)
1987	12.2 C (54.0 F)
1988	15.0 C (59.0 F)
1989	10.0 C (50.0 F)
1990	11.1 C (52.0 F)
1992	13.9 C (57.0 F)
1993	10.0 C (50.0 F)
1994	n/a
1995	n/a
1996	17.2 C (63.0 F)
1997	14.4 C (57.9 F)
1998	14.4 C (57.9 F)
1999	10.0 C (50.0 F)
2000	11.7 C (53.1 F)
2001	10.0 C (50.0 F)
2002	10.0 C (50.0 F)
2003	10.0 C (50.0 F)
2004	11.1 C (52.0 F)
2005	10.0 C (50.0 F)
2006	12.2 C (54.0 F)
2007	15.0 C (59.0 F)
2008	9.4 C (48.9 F)
2009	10.6 C (51.1 F)
2010	13.9 C (57.0 F)
2011	15.0 C (59.0 F)
2012	15.6 C (60.1 F)
2013	15.6 C (60.1 F)

Wettest day (Rx1day)

The wettest day of the year at Tonalapa del Sur, 1966 to 2013. The record is 84.8 mm (3.3 in) in 1974, marked on the chart; the median year is 42.4 mm (1.7 in).

Wettest day (Rx1day) at Tonalapa del Sur by year
Year	Wettest day (Rx1day)
1966	49.8 mm (2.0 in)
1967	66.3 mm (2.6 in)
1968	63.8 mm (2.5 in)
1969	59.9 mm (2.4 in)
1970	43.9 mm (1.7 in)
1971	43.9 mm (1.7 in)
1972	46.0 mm (1.8 in)
1973	73.9 mm (2.9 in)
1974	84.8 mm (3.3 in)
1975	49.3 mm (1.9 in)
1976	56.4 mm (2.2 in)
1977	40.1 mm (1.6 in)
1978	53.8 mm (2.1 in)
1979	55.4 mm (2.2 in)
1980	47.5 mm (1.9 in)
1981	42.4 mm (1.7 in)
1982	36.8 mm (1.4 in)
1983	70.4 mm (2.8 in)
1984	59.9 mm (2.4 in)
1985	63.2 mm (2.5 in)
1986	0.0 mm (0.00 in)
1987	23.6 mm (0.9 in)
1988	48.8 mm (1.9 in)
1989	51.1 mm (2.0 in)
1990	42.4 mm (1.7 in)
1992	41.7 mm (1.6 in)
1993	37.8 mm (1.5 in)
1994	46.7 mm (1.8 in)
1995	54.6 mm (2.1 in)
1996	0.0 mm (0.00 in)
1997	0.0 mm (0.00 in)
1998	0.0 mm (0.00 in)
1999	0.0 mm (0.00 in)
2000	0.0 mm (0.00 in)
2001	41.1 mm (1.6 in)
2002	53.1 mm (2.1 in)
2003	76.7 mm (3.0 in)
2004	32.3 mm (1.3 in)
2005	32.8 mm (1.3 in)
2006	0.0 mm (0.00 in)
2007	24.4 mm (1.0 in)
2008	19.3 mm (0.8 in)
2009	6.1 mm (0.24 in)
2010	6.1 mm (0.24 in)
2011	23.1 mm (0.9 in)
2012	11.2 mm (0.4 in)
2013	6.1 mm (0.24 in)

Wettest five days (Rx5day)

The wettest five days of the year at Tonalapa del Sur, 1966 to 2013. The record is 196.2 mm (7.7 in) in 1968, marked on the chart; the median year is 90.2 mm (3.6 in).

Wettest five days (Rx5day) at Tonalapa del Sur by year
Year	Wettest five days (Rx5day)
1966	128.4 mm (5.1 in)
1967	116.7 mm (4.6 in)
1968	196.2 mm (7.7 in)
1969	105.9 mm (4.2 in)
1970	92.4 mm (3.6 in)
1971	93.2 mm (3.7 in)
1972	115.9 mm (4.6 in)
1973	164.7 mm (6.5 in)
1974	186.2 mm (7.3 in)
1975	73.9 mm (2.9 in)
1976	97.5 mm (3.8 in)
1977	96.5 mm (3.8 in)
1978	90.2 mm (3.6 in)
1979	105.7 mm (4.2 in)
1980	112.2 mm (4.4 in)
1981	90.4 mm (3.6 in)
1982	85.7 mm (3.4 in)
1983	113.4 mm (4.5 in)
1984	105.6 mm (4.2 in)
1985	134.8 mm (5.3 in)
1986	0.0 mm (0.00 in)
1987	54.5 mm (2.1 in)
1988	97.5 mm (3.8 in)
1989	131.9 mm (5.2 in)
1990	50.9 mm (2.0 in)
1992	104.7 mm (4.1 in)
1993	86.7 mm (3.4 in)
1994	87.4 mm (3.4 in)
1995	116.8 mm (4.6 in)
1996	0.0 mm (0.00 in)
1997	0.0 mm (0.00 in)
1998	0.0 mm (0.00 in)
1999	0.0 mm (0.00 in)
2000	0.0 mm (0.00 in)
2001	84.5 mm (3.3 in)
2002	90.7 mm (3.6 in)
2003	126.0 mm (5.0 in)
2004	55.9 mm (2.2 in)
2005	67.1 mm (2.6 in)
2006	0.0 mm (0.00 in)
2007	53.1 mm (2.1 in)
2008	43.6 mm (1.7 in)
2009	14.3 mm (0.6 in)
2010	13.5 mm (0.5 in)
2011	58.4 mm (2.3 in)
2012	16.0 mm (0.6 in)
2013	10.7 mm (0.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Tonalapa del Sur, 1966 to 2013. The record is 185 days in 2012, marked on the chart; the median year is 105 days.

Longest dry spell (CDD) at Tonalapa del Sur by year
Year	Longest dry spell (CDD)
1966	68 days
1967	94 days
1968	46 days
1969	160 days
1970	97 days
1971	79 days
1972	105 days
1973	130 days
1974	118 days
1975	107 days
1976	90 days
1977	85 days
1978	51 days
1979	109 days
1980	98 days
1981	86 days
1982	82 days
1983	72 days
1984	115 days
1985	101 days
1986	151 days
1987	104 days
1988	114 days
1989	74 days
1990	129 days
1992	164 days
1993	124 days
1994	134 days
1995	97 days
1996	152 days
1997	151 days
1998	151 days
1999	143 days
2000	184 days
2001	90 days
2002	75 days
2003	89 days
2004	65 days
2005	64 days
2006	120 days
2007	120 days
2008	91 days
2009	155 days
2010	92 days
2011	151 days
2012	185 days
2013	171 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 Tonalapa del Sur standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Tonalapa del Sur 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 2026-10-17 (17 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).