Santiago Tlajomulco Weather Records (MXN00013131)

Record envelope, standing records and threshold days for Santiago Tlajomulco (MXN00013131), Mexico, with 31 years of record.

Key Facts for Santiago Tlajomulco

Santiago Tlajomulco (MXN00013131) is a weather station in Mexico at 19.98 latitude and -98.92 longitude, 2,430 m (7,972 ft) above sea level.
The station reports from 1981 to 2011, 31 years of record.
1,464 records set at Santiago Tlajomulco still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Mexico, 19.98 latitude, -98.92 longitude.
Elevation: 2,430 m (7,972 ft).
Period of record: 1981 to 2011, 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 Santiago Tlajomulco. 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 Santiago Tlajomulco, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	28.9 C (84.0 F)	-6.1 C (21.0 F)	n/a	n/a
Feb	30.0 C (86.0 F)	-5.0 C (23.0 F)	n/a	n/a
Mar	33.9 C (93.0 F)	-5.0 C (23.0 F)	n/a	n/a
Apr	35.0 C (95.0 F)	0.0 C (32.0 F)	n/a	n/a
May	37.8 C (100.0 F)	1.7 C (35.1 F)	n/a	n/a
Jun	31.7 C (89.1 F)	1.7 C (35.1 F)	n/a	n/a
Jul	28.9 C (84.0 F)	3.9 C (39.0 F)	n/a	n/a
Aug	28.9 C (84.0 F)	0.6 C (33.1 F)	n/a	n/a
Sep	30.0 C (86.0 F)	-2.2 C (28.0 F)	n/a	n/a
Oct	30.0 C (86.0 F)	-4.4 C (24.1 F)	n/a	n/a
Nov	28.9 C (84.0 F)	-5.0 C (23.0 F)	n/a	n/a
Dec	28.9 C (84.0 F)	-6.1 C (21.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Santiago Tlajomulco still stand. 1987 holds the most, with 149.

Standing records at Santiago Tlajomulco by the year they were set
Year set	Standing records
1981	44
1982	115
1983	75
1984	107
1985	73
1986	112
1987	149
1988	83
1995	89
1997	94
1998	115
2000	20
2006	78
2007	57
2008	75
2009	49
2010	59
2011	70

Wettest Day of Each Month

Sep: 88.4 mm (3.5 in)

The wettest day on record for each calendar month at Santiago Tlajomulco. The most was 88.4 mm (3.5 in) on 4 September 2009.

Record daily precipitation for each month at Santiago Tlajomulco
Month	Record daily precipitation (mm)	Date
Jan	19.8 mm (0.8 in)	18 January 1983
Feb	28.4 mm (1.1 in)	3 February 2010
Mar	31.0 mm (1.2 in)	4 March 1988
Apr	41.9 mm (1.6 in)	21 April 1982
May	40.4 mm (1.6 in)	16 May 1985
Jun	70.4 mm (2.8 in)	4 June 1985
Jul	52.3 mm (2.1 in)	10 July 1984
Aug	53.3 mm (2.1 in)	22 August 1995
Sep	88.4 mm (3.5 in)	4 September 2009
Oct	39.4 mm (1.6 in)	6 October 1982
Nov	23.9 mm (0.9 in)	26 November 2011
Dec	22.9 mm (0.9 in)	30 December 1995

Period of Record Coverage

1981 to 2011

18 years of record at Santiago Tlajomulco, 1981 to 2011. 7 years have data for under 90 percent of days and are left out of rankings: 1981, 1983, 1988, 2000, 2006, 2009, 2010.

Days with data per year at Santiago Tlajomulco
Year	Days with data	Share of year	Complete
1981	153	42%	No
1982	365	100%	Yes
1983	242	66%	No
1984	365	100%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	364	100%	Yes
1988	274	75%	No
1995	358	98%	Yes
1997	365	100%	Yes
1998	365	100%	Yes
2000	91	25%	No
2006	239	65%	No
2007	363	99%	Yes
2008	335	92%	Yes
2009	241	66%	No
2010	272	75%	No
2011	365	100%	Yes

Latest Records

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

Extremes by Year

1981 to 2011

Yearly extremes at Santiago Tlajomulco: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	37.8 C (100.0 F)	1988	31.7 C (89.1 F)	18
Coldest night (TNn)	-6.1 C (21.0 F)	1988	-5.0 C (23.0 F)	18
Wettest day (Rx1day)	88.4 mm (3.5 in)	2009	42.4 mm (1.7 in)	18
Wettest five days (Rx5day)	133.0 mm (5.2 in)	1986	70.0 mm (2.8 in)	18
Longest dry spell (CDD)	95 days	1986	49 days	18

Hottest day (TXx)

The hottest day of the year at Santiago Tlajomulco, 1981 to 2011. The record is 37.8 C (100.0 F) in 1988, marked on the chart; the median year is 31.7 C (89.1 F).

Hottest day (TXx) at Santiago Tlajomulco by year
Year	Hottest day (TXx)
1981	28.9 C (84.0 F)
1982	31.7 C (89.1 F)
1983	33.9 C (93.0 F)
1984	33.9 C (93.0 F)
1985	32.8 C (91.0 F)
1986	32.2 C (90.0 F)
1987	31.7 C (89.1 F)
1988	37.8 C (100.0 F)
1995	32.8 C (91.0 F)
1997	30.6 C (87.1 F)
1998	35.0 C (95.0 F)
2000	30.6 C (87.1 F)
2006	30.6 C (87.1 F)
2007	30.6 C (87.1 F)
2008	30.6 C (87.1 F)
2009	28.9 C (84.0 F)
2010	31.7 C (89.1 F)
2011	32.8 C (91.0 F)

Coldest night (TNn)

The coldest night of the year at Santiago Tlajomulco, 1981 to 2011. The record is -6.1 C (21.0 F) in 1988, marked on the chart; the median year is -5.0 C (23.0 F).

Coldest night (TNn) at Santiago Tlajomulco by year
Year	Coldest night (TNn)
1981	0.6 C (33.1 F)
1982	-3.9 C (25.0 F)
1983	-3.3 C (26.1 F)
1984	-5.0 C (23.0 F)
1985	-2.2 C (28.0 F)
1986	-5.6 C (21.9 F)
1987	-5.0 C (23.0 F)
1988	-6.1 C (21.0 F)
1995	-5.0 C (23.0 F)
1997	-6.1 C (21.0 F)
1998	-5.0 C (23.0 F)
2000	-5.0 C (23.0 F)
2006	-5.0 C (23.0 F)
2007	-4.4 C (24.1 F)
2008	-4.4 C (24.1 F)
2009	-5.0 C (23.0 F)
2010	-2.2 C (28.0 F)
2011	-4.4 C (24.1 F)

Wettest day (Rx1day)

The wettest day of the year at Santiago Tlajomulco, 1981 to 2011. The record is 88.4 mm (3.5 in) in 2009, marked on the chart; the median year is 42.4 mm (1.7 in).

Wettest day (Rx1day) at Santiago Tlajomulco by year
Year	Wettest day (Rx1day)
1981	45.7 mm (1.8 in)
1982	41.9 mm (1.6 in)
1983	37.1 mm (1.5 in)
1984	52.3 mm (2.1 in)
1985	70.4 mm (2.8 in)
1986	66.5 mm (2.6 in)
1987	30.5 mm (1.2 in)
1988	34.8 mm (1.4 in)
1995	53.3 mm (2.1 in)
1997	31.5 mm (1.2 in)
1998	65.8 mm (2.6 in)
2000	5.3 mm (0.21 in)
2006	25.9 mm (1.0 in)
2007	42.9 mm (1.7 in)
2008	39.1 mm (1.5 in)
2009	88.4 mm (3.5 in)
2010	29.0 mm (1.1 in)
2011	55.1 mm (2.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Santiago Tlajomulco, 1981 to 2011. The record is 133.0 mm (5.2 in) in 1986, marked on the chart; the median year is 70.0 mm (2.8 in).

Wettest five days (Rx5day) at Santiago Tlajomulco by year
Year	Wettest five days (Rx5day)
1981	114.9 mm (4.5 in)
1982	54.8 mm (2.2 in)
1983	60.2 mm (2.4 in)
1984	89.4 mm (3.5 in)
1985	84.4 mm (3.3 in)
1986	133.0 mm (5.2 in)
1987	52.1 mm (2.1 in)
1988	64.4 mm (2.5 in)
1995	63.9 mm (2.5 in)
1997	71.9 mm (2.8 in)
1998	110.8 mm (4.4 in)
2000	9.6 mm (0.38 in)
2006	50.5 mm (2.0 in)
2007	52.4 mm (2.1 in)
2008	68.1 mm (2.7 in)
2009	107.5 mm (4.2 in)
2010	77.1 mm (3.0 in)
2011	95.2 mm (3.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Santiago Tlajomulco, 1981 to 2011. The record is 95 days in 1986, marked on the chart; the median year is 49 days.

Longest dry spell (CDD) at Santiago Tlajomulco by year
Year	Longest dry spell (CDD)
1981	12 days
1982	61 days
1983	53 days
1984	33 days
1985	36 days
1986	95 days
1987	85 days
1988	37 days
1995	34 days
1997	45 days
1998	93 days
2000	64 days
2006	50 days
2007	31 days
2008	50 days
2009	33 days
2010	47 days
2011	56 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 Santiago Tlajomulco standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Santiago Tlajomulco 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).