San Miguel Totolapan Weather Records (MXN00012166)

Record envelope, standing records and threshold days for San Miguel Totolapan (MXN00012166), Mexico, with 38 years of record.

Key Facts for San Miguel Totolapan

San Miguel Totolapan (MXN00012166) is a weather station in Mexico at 18.15 latitude and -100.38 longitude, 280 m (918 ft) above sea level.
The station reports from 1975 to 2012, 38 years of record.
1,464 records set at San Miguel Totolapan still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
San Miguel Totolapan tied a daily record high maximum temperature of 35.0 C (95.0 F) on 22 September 2012.

About the Station

Location: Mexico, 18.15 latitude, -100.38 longitude.
Elevation: 280 m (918 ft).
Period of record: 1975 to 2012, 38 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 San Miguel Totolapan. 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 Miguel Totolapan, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	40.6 C (105.1 F)	8.3 C (46.9 F)	n/a	n/a
Feb	41.7 C (107.1 F)	7.8 C (46.0 F)	n/a	n/a
Mar	44.4 C (111.9 F)	10.0 C (50.0 F)	n/a	n/a
Apr	45.0 C (113.0 F)	10.6 C (51.1 F)	n/a	n/a
May	45.0 C (113.0 F)	11.1 C (52.0 F)	n/a	n/a
Jun	46.7 C (116.1 F)	11.7 C (53.1 F)	n/a	n/a
Jul	40.6 C (105.1 F)	10.0 C (50.0 F)	n/a	n/a
Aug	38.9 C (102.0 F)	10.0 C (50.0 F)	n/a	n/a
Sep	39.4 C (102.9 F)	10.0 C (50.0 F)	n/a	n/a
Oct	40.0 C (104.0 F)	8.3 C (46.9 F)	n/a	n/a
Nov	40.0 C (104.0 F)	8.9 C (48.0 F)	n/a	n/a
Dec	39.4 C (102.9 F)	6.7 C (44.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at San Miguel Totolapan still stand. 2011 holds the most, with 163.

Standing records at San Miguel Totolapan by the year they were set
Year set	Standing records
1975	14
1976	67
1977	11
1978	9
1979	34
1980	15
1981	12
1982	10
1983	6
1984	18
1985	9
1986	14
1987	23
1988	17
1989	11
1990	43
1991	13
1992	20
1994	9
1995	17
1996	29
1997	10
1998	103
1999	143
2000	67
2001	109
2002	28
2003	25
2004	52
2005	69
2006	48
2007	15
2008	38
2009	31
2010	82
2011	163
2012	80

All-Time Record Progression

7 new records

7 all-time records were set at San Miguel Totolapan between 9 May 2010 and 29 June 2011. Each dot is a new record.

When San Miguel Totolapan set new all-time records
Date	Kind	Detail
2010-05-09	Record high minimum temperature	Record high minimum temperature 30.6 C (87.1 F)
2010-05-15	Record high minimum temperature	Record high minimum temperature 31.1 C (88.0 F)
2010-05-22	Record high minimum temperature	Record high minimum temperature 31.7 C (89.1 F)
2010-05-24	Record high minimum temperature	Record high minimum temperature 32.8 C (91.0 F)
2010-08-19	Record daily precipitation	Record daily precipitation 116.8 mm (4.6 in)
2011-06-28	Record high maximum temperature	Record high maximum temperature 45.6 C (114.1 F)
2011-06-29	Record high maximum temperature	Record high maximum temperature 46.7 C (116.1 F)

Wettest Day of Each Month

Aug: 116.8 mm (4.6 in)

The wettest day on record for each calendar month at San Miguel Totolapan. The most was 116.8 mm (4.6 in) on 19 August 2010.

Record daily precipitation for each month at San Miguel Totolapan
Month	Record daily precipitation (mm)	Date
Jan	59.7 mm (2.4 in)	25 January 1980
Feb	79.8 mm (3.1 in)	3 February 2010
Mar	33.3 mm (1.3 in)	2 March 2001
Apr	24.9 mm (1.0 in)	20 April 1977
May	63.0 mm (2.5 in)	30 May 1976
Jun	96.0 mm (3.8 in)	30 June 1981
Jul	113.8 mm (4.5 in)	26 July 1976
Aug	116.8 mm (4.6 in)	19 August 2010
Sep	115.8 mm (4.6 in)	21 September 2010
Oct	80.3 mm (3.2 in)	18 October 1998
Nov	55.9 mm (2.2 in)	4 November 1980
Dec	52.8 mm (2.1 in)	30 December 1995

Period of Record Coverage

1975 to 2012

38 years of record at San Miguel Totolapan, 1975 to 2012. 7 years have data for under 90 percent of days and are left out of rankings: 1975, 1978, 1983, 1991, 1993, 1995, 2007.

Days with data per year at San Miguel Totolapan
Year	Days with data	Share of year	Complete
1975	153	42%	No
1976	366	100%	Yes
1977	365	100%	Yes
1978	303	83%	No
1979	355	97%	Yes
1980	337	92%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	283	78%	No
1984	352	96%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	335	92%	Yes
1988	366	100%	Yes
1989	365	100%	Yes
1990	332	91%	Yes
1991	304	83%	No
1992	366	100%	Yes
1993	120	33%	No
1994	334	92%	Yes
1995	92	25%	No
1996	366	100%	Yes
1997	365	100%	Yes
1998	365	100%	Yes
1999	365	100%	Yes
2000	366	100%	Yes
2001	365	100%	Yes
2002	365	100%	Yes
2003	365	100%	Yes
2004	365	100%	Yes
2005	365	100%	Yes
2006	364	100%	Yes
2007	212	58%	No
2008	366	100%	Yes
2009	365	100%	Yes
2010	365	100%	Yes
2011	364	100%	Yes
2012	333	91%	Yes

Latest Records

Latest records at San Miguel Totolapan
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
22 September 2012	San Miguel Totolapan, MX	daily high max (Tie)	35.0 C (95.0 F)	tie	33 years	3 of 100 (Routine)
17 September 2012	San Miguel Totolapan, MX	daily rain	80.8 mm (3.2 in)	30.0 mm (1.2 in)	13 years	23 of 100 (Routine)
14 September 2012	San Miguel Totolapan, MX	daily high max (Tie)	34.4 C (93.9 F)	tie	33 years	3 of 100 (Routine)
30 May 2012	San Miguel Totolapan, MX	daily low max	33.9 C (93.0 F)	1.1 C (2.0 F)	26 years	15 of 100 (Routine)
24 May 2012	San Miguel Totolapan, MX	daily low max	33.9 C (93.0 F)	1.1 C (2.0 F)	35 years	18 of 100 (Routine)
23 May 2012	San Miguel Totolapan, MX	daily low max	33.9 C (93.0 F)	2.8 C (5.0 F)	30 years	24 of 100 (Routine)
22 May 2012	San Miguel Totolapan, MX	daily low max	33.9 C (93.0 F)	1.1 C (2.0 F)	4 years	9 of 100 (Routine)
21 May 2012	San Miguel Totolapan, MX	daily low max	33.9 C (93.0 F)	1.1 C (2.0 F)	35 years	18 of 100 (Routine)
20 May 2012	San Miguel Totolapan, MX	daily low max	33.9 C (93.0 F)	2.2 C (4.0 F)	30 years	22 of 100 (Routine)
19 May 2012	San Miguel Totolapan, MX	daily low max	32.8 C (91.0 F)	2.2 C (4.0 F)	22 years	19 of 100 (Routine)
18 May 2012	San Miguel Totolapan, MX	daily low max	32.8 C (91.0 F)	2.8 C (5.0 F)	22 years	21 of 100 (Routine)
17 May 2012	San Miguel Totolapan, MX	daily low max	33.9 C (93.0 F)	2.8 C (5.0 F)	4 years	16 of 100 (Routine)
17 May 2012	San Miguel Totolapan, MX	daily rain	9.4 mm (0.37 in)	4.6 mm (0.18 in)	3 years	7 of 100 (Routine)
16 May 2012	San Miguel Totolapan, MX	daily low max	33.9 C (93.0 F)	2.8 C (5.0 F)	30 years	24 of 100 (Routine)
15 May 2012	San Miguel Totolapan, MX	daily low max	32.8 C (91.0 F)	2.8 C (5.0 F)	30 years	24 of 100 (Routine)
14 May 2012	San Miguel Totolapan, MX	daily low max	32.8 C (91.0 F)	0.5 C (0.9 F)	11 years	8 of 100 (Routine)
13 May 2012	San Miguel Totolapan, MX	daily low max	33.3 C (91.9 F)	2.3 C (4.1 F)	30 years	22 of 100 (Routine)
12 May 2012	San Miguel Totolapan, MX	daily low max	32.8 C (91.0 F)	3.9 C (7.0 F)	28 years	29 of 100 (Routine)
9 May 2012	San Miguel Totolapan, MX	daily low max	32.8 C (91.0 F)	1.1 C (2.0 F)	22 years	14 of 100 (Routine)
6 May 2012	San Miguel Totolapan, MX	daily low max	31.7 C (89.1 F)	3.3 C (5.9 F)	18 years	23 of 100 (Routine)

Climate Trend

23 complete years, 1976 to 2011

One stripe for each of 23 complete years at San Miguel Totolapan, 1976 to 2011. Blue stripes are years cooler than the station's own mean of 27.2 C (81.0 F); red stripes are warmer. The coolest year was 2003, at 24.4 C (75.9 F), and the warmest was 1979, at 28.7 C (83.6 F). The strongest colour marks a difference of 2.9 C (5.2 F).

Annual mean temperature at San Miguel Totolapan as warming stripes, 1976 to 2011
Year	Annual mean temperature	Difference from the station mean
1976	28.2 C	+0.99 C
1977	27.8 C	+0.59 C
1979	28.7 C	+1.46 C
1981	28.0 C	+0.77 C
1982	28.3 C	+1.10 C
1984	27.5 C	+0.25 C
1985	27.5 C	+0.33 C
1986	27.9 C	+0.72 C
1988	28.4 C	+1.16 C
1989	27.9 C	+0.66 C
1992	27.6 C	+0.37 C
1996	27.9 C	+0.70 C
1997	27.8 C	+0.63 C
1998	26.7 C	-0.50 C
1999	25.0 C	-2.22 C
2000	25.3 C	-1.88 C
2001	25.3 C	-1.89 C
2002	25.4 C	-1.78 C
2003	24.4 C	-2.80 C
2004	25.8 C	-1.40 C
2005	28.5 C	+1.29 C
2010	28.1 C	+0.88 C
2011	27.9 C	+0.68 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 2012

Yearly extremes at San Miguel Totolapan: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	46.7 C (116.1 F)	2011	42.8 C (109.0 F)	38
Coldest night (TNn)	6.7 C (44.1 F)	1999	13.6 C (56.5 F)	38
Wettest day (Rx1day)	116.8 mm (4.6 in)	2010	65.1 mm (2.6 in)	38
Wettest five days (Rx5day)	222.3 mm (8.8 in)	2011	127.1 mm (5.0 in)	38
Longest dry spell (CDD)	158 days	2008	110 days	38

Hottest day (TXx)

The hottest day of the year at San Miguel Totolapan, 1975 to 2012. The record is 46.7 C (116.1 F) in 2011, marked on the chart; the median year is 42.8 C (109.0 F).

Hottest day (TXx) at San Miguel Totolapan by year
Year	Hottest day (TXx)
1975	40.0 C (104.0 F)
1976	44.4 C (111.9 F)
1977	41.1 C (106.0 F)
1978	42.8 C (109.0 F)
1979	44.4 C (111.9 F)
1980	45.0 C (113.0 F)
1981	42.8 C (109.0 F)
1982	42.8 C (109.0 F)
1983	45.0 C (113.0 F)
1984	43.3 C (109.9 F)
1985	41.7 C (107.1 F)
1986	45.0 C (113.0 F)
1987	42.8 C (109.0 F)
1988	43.3 C (109.9 F)
1989	42.8 C (109.0 F)
1990	42.2 C (108.0 F)
1991	42.8 C (109.0 F)
1992	42.2 C (108.0 F)
1993	42.8 C (109.0 F)
1994	42.8 C (109.0 F)
1995	38.9 C (102.0 F)
1996	42.2 C (108.0 F)
1997	42.8 C (109.0 F)
1998	45.0 C (113.0 F)
1999	45.0 C (113.0 F)
2000	43.9 C (111.0 F)
2001	43.9 C (111.0 F)
2002	43.9 C (111.0 F)
2003	41.7 C (107.1 F)
2004	44.4 C (111.9 F)
2005	44.4 C (111.9 F)
2006	41.7 C (107.1 F)
2007	41.1 C (106.0 F)
2008	41.7 C (107.1 F)
2009	40.0 C (104.0 F)
2010	40.6 C (105.1 F)
2011	46.7 C (116.1 F)
2012	39.4 C (102.9 F)

Coldest night (TNn)

The coldest night of the year at San Miguel Totolapan, 1975 to 2012. The record is 6.7 C (44.1 F) in 1999, marked on the chart; the median year is 13.6 C (56.5 F).

Coldest night (TNn) at San Miguel Totolapan by year
Year	Coldest night (TNn)
1975	11.1 C (52.0 F)
1976	11.7 C (53.1 F)
1977	13.9 C (57.0 F)
1978	15.0 C (59.0 F)
1979	15.0 C (59.0 F)
1980	13.3 C (55.9 F)
1981	11.1 C (52.0 F)
1982	15.0 C (59.0 F)
1983	13.9 C (57.0 F)
1984	14.4 C (57.9 F)
1985	13.9 C (57.0 F)
1986	11.7 C (53.1 F)
1987	14.4 C (57.9 F)
1988	14.4 C (57.9 F)
1989	13.9 C (57.0 F)
1990	11.7 C (53.1 F)
1991	15.0 C (59.0 F)
1992	10.0 C (50.0 F)
1993	14.4 C (57.9 F)
1994	11.7 C (53.1 F)
1995	13.9 C (57.0 F)
1996	10.6 C (51.1 F)
1997	8.3 C (46.9 F)
1998	7.8 C (46.0 F)
1999	6.7 C (44.1 F)
2000	8.3 C (46.9 F)
2001	10.0 C (50.0 F)
2002	8.9 C (48.0 F)
2003	7.8 C (46.0 F)
2004	8.3 C (46.9 F)
2005	17.8 C (64.0 F)
2006	15.0 C (59.0 F)
2007	18.9 C (66.0 F)
2008	16.1 C (61.0 F)
2009	16.7 C (62.1 F)
2010	15.6 C (60.1 F)
2011	12.8 C (55.0 F)
2012	12.8 C (55.0 F)

Wettest day (Rx1day)

The wettest day of the year at San Miguel Totolapan, 1975 to 2012. The record is 116.8 mm (4.6 in) in 2010, marked on the chart; the median year is 65.1 mm (2.6 in).

Wettest day (Rx1day) at San Miguel Totolapan by year
Year	Wettest day (Rx1day)
1975	56.4 mm (2.2 in)
1976	113.8 mm (4.5 in)
1977	85.9 mm (3.4 in)
1978	75.7 mm (3.0 in)
1979	43.4 mm (1.7 in)
1980	93.5 mm (3.7 in)
1981	96.0 mm (3.8 in)
1982	38.1 mm (1.5 in)
1983	88.6 mm (3.5 in)
1984	64.3 mm (2.5 in)
1985	67.6 mm (2.7 in)
1986	73.9 mm (2.9 in)
1987	52.8 mm (2.1 in)
1988	37.6 mm (1.5 in)
1989	64.3 mm (2.5 in)
1990	50.8 mm (2.0 in)
1991	64.8 mm (2.6 in)
1992	64.3 mm (2.5 in)
1993	0.0 mm (0.00 in)
1994	34.8 mm (1.4 in)
1995	52.8 mm (2.1 in)
1996	62.0 mm (2.4 in)
1997	76.2 mm (3.0 in)
1998	96.8 mm (3.8 in)
1999	64.8 mm (2.6 in)
2000	45.0 mm (1.8 in)
2001	59.9 mm (2.4 in)
2002	65.3 mm (2.6 in)
2003	91.4 mm (3.6 in)
2004	74.9 mm (2.9 in)
2005	78.5 mm (3.1 in)
2006	104.6 mm (4.1 in)
2007	39.9 mm (1.6 in)
2008	65.5 mm (2.6 in)
2009	53.8 mm (2.1 in)
2010	116.8 mm (4.6 in)
2011	94.5 mm (3.7 in)
2012	83.6 mm (3.3 in)

Wettest five days (Rx5day)

The wettest five days of the year at San Miguel Totolapan, 1975 to 2012. The record is 222.3 mm (8.8 in) in 2011, marked on the chart; the median year is 127.1 mm (5.0 in).

Wettest five days (Rx5day) at San Miguel Totolapan by year
Year	Wettest five days (Rx5day)
1975	105.8 mm (4.2 in)
1976	209.1 mm (8.2 in)
1977	150.7 mm (5.9 in)
1978	141.7 mm (5.6 in)
1979	84.6 mm (3.3 in)
1980	134.4 mm (5.3 in)
1981	167.6 mm (6.6 in)
1982	86.3 mm (3.4 in)
1983	156.8 mm (6.2 in)
1984	109.0 mm (4.3 in)
1985	174.3 mm (6.9 in)
1986	112.6 mm (4.4 in)
1987	95.3 mm (3.8 in)
1988	127.8 mm (5.0 in)
1989	108.9 mm (4.3 in)
1990	107.9 mm (4.2 in)
1991	83.1 mm (3.3 in)
1992	107.7 mm (4.2 in)
1993	0.0 mm (0.00 in)
1994	98.6 mm (3.9 in)
1995	77.7 mm (3.1 in)
1996	205.6 mm (8.1 in)
1997	149.6 mm (5.9 in)
1998	143.0 mm (5.6 in)
1999	144.4 mm (5.7 in)
2000	98.3 mm (3.9 in)
2001	133.7 mm (5.3 in)
2002	98.7 mm (3.9 in)
2003	149.9 mm (5.9 in)
2004	125.2 mm (4.9 in)
2005	149.9 mm (5.9 in)
2006	158.5 mm (6.2 in)
2007	83.1 mm (3.3 in)
2008	125.7 mm (4.9 in)
2009	126.4 mm (5.0 in)
2010	221.2 mm (8.7 in)
2011	222.3 mm (8.8 in)
2012	181.6 mm (7.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at San Miguel Totolapan, 1975 to 2012. The record is 158 days in 2008, marked on the chart; the median year is 110 days.

Longest dry spell (CDD) at San Miguel Totolapan by year
Year	Longest dry spell (CDD)
1975	66 days
1976	97 days
1977	109 days
1978	67 days
1979	105 days
1980	79 days
1981	66 days
1982	146 days
1983	72 days
1984	130 days
1985	123 days
1986	137 days
1987	90 days
1988	98 days
1989	120 days
1990	82 days
1991	138 days
1992	110 days
1993	120 days
1994	127 days
1995	30 days
1996	132 days
1997	132 days
1998	155 days
1999	84 days
2000	75 days
2001	77 days
2002	89 days
2003	131 days
2004	77 days
2005	123 days
2006	119 days
2007	110 days
2008	158 days
2009	133 days
2010	122 days
2011	121 days
2012	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.

Rainfall Return Levels

33 years, 1976 to 2012

A day with at least 71.0 mm (2.8 in) of rain is expected about once in 2 years. A day with at least 126.2 mm (5.0 in) of rain is expected about once in 100 years.

Rainfall return levels at San Miguel Totolapan: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	71.0 mm (2.8 in)
5 years	90.8 mm (3.6 in)
10 years	101.6 mm (4.0 in)
25 years	113.0 mm (4.4 in)
50 years	120.1 mm (4.7 in)	Longer than the 33 years of record
100 years	126.2 mm (5.0 in)	Longer than the 33 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, 33 years of values from 1976 to 2012.

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: 116.8 mm (4.6 in) in 2010; 113.8 mm (4.5 in) in 1976; 104.6 mm (4.1 in) in 2006.

Download the Data

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