Tanlu Weather Records (MXN00024136)

Record envelope, standing records and threshold days for Tanlu (MXN00024136), Mexico, with 38 years of record.

Key Facts for Tanlu

Tanlu (MXN00024136) is a weather station in Mexico at 21.63 latitude and -99.25 longitude, 386 m (1,266 ft) above sea level.
The station reports from 1973 to 2010, 38 years of record.
1,464 records set at Tanlu still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Tanlu set a daily record high minimum temperature of 20.0 C (68.0 F) on 30 November 2010.

About the Station

Location: Mexico, 21.63 latitude, -99.25 longitude.
Elevation: 386 m (1,266 ft).
Period of record: 1973 to 2010, 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 Tanlu. 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 Tanlu, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	38.3 C (100.9 F)	0.0 C (32.0 F)	n/a	n/a
Feb	42.8 C (109.0 F)	0.6 C (33.1 F)	n/a	n/a
Mar	46.1 C (115.0 F)	2.2 C (36.0 F)	n/a	n/a
Apr	48.9 C (120.0 F)	3.9 C (39.0 F)	n/a	n/a
May	48.9 C (120.0 F)	10.0 C (50.0 F)	n/a	n/a
Jun	46.7 C (116.1 F)	13.9 C (57.0 F)	n/a	n/a
Jul	40.6 C (105.1 F)	13.9 C (57.0 F)	n/a	n/a
Aug	42.2 C (108.0 F)	17.2 C (63.0 F)	n/a	n/a
Sep	41.7 C (107.1 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	38.9 C (102.0 F)	3.3 C (37.9 F)	n/a	n/a
Dec	36.7 C (98.1 F)	-0.6 C (30.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Tanlu still stand. 1995 holds the most, with 91.

Standing records at Tanlu by the year they were set
Year set	Standing records
1973	36
1974	36
1975	44
1976	46
1977	33
1978	32
1979	55
1980	47
1981	43
1982	40
1983	47
1984	52
1985	32
1986	34
1987	57
1988	38
1989	51
1990	27
1991	45
1992	46
1993	38
1994	79
1995	91
1996	42
1997	59
1998	61
1999	13
2000	20
2001	17
2002	26
2003	27
2004	28
2005	27
2006	36
2007	13
2008	22
2009	6
2010	18

Wettest Day of Each Month

Sep: 320.0 mm (12.6 in)

The wettest day on record for each calendar month at Tanlu. The most was 320.0 mm (12.6 in) on 9 September 1975.

Record daily precipitation for each month at Tanlu
Month	Record daily precipitation (mm)	Date
Jan	26.4 mm (1.0 in)	19 January 1975
Feb	26.9 mm (1.1 in)	4 February 2007
Mar	25.9 mm (1.0 in)	8 March 2004
Apr	45.0 mm (1.8 in)	13 April 1981
May	87.9 mm (3.5 in)	26 May 1984
Jun	170.9 mm (6.7 in)	16 June 1981
Jul	199.9 mm (7.9 in)	1 July 1991
Aug	259.8 mm (10.2 in)	7 August 1990
Sep	320.0 mm (12.6 in)	9 September 1975
Oct	160.8 mm (6.3 in)	18 October 1998
Nov	49.3 mm (1.9 in)	4 November 1986
Dec	54.9 mm (2.2 in)	4 December 1981

Period of Record Coverage

1973 to 2010

38 years of record at Tanlu, 1973 to 2010. 8 years have data for under 90 percent of days and are left out of rankings: 1973, 1976, 1993, 1999, 2000, 2001, 2009, 2010.

Days with data per year at Tanlu
Year	Days with data	Share of year	Complete
1973	259	71%	No
1974	363	99%	Yes
1975	361	99%	Yes
1976	268	73%	No
1977	361	99%	Yes
1978	354	97%	Yes
1979	361	99%	Yes
1980	359	98%	Yes
1981	364	100%	Yes
1982	345	95%	Yes
1983	364	100%	Yes
1984	364	99%	Yes
1985	365	100%	Yes
1986	364	100%	Yes
1987	357	98%	Yes
1988	353	96%	Yes
1989	354	97%	Yes
1990	332	91%	Yes
1991	336	92%	Yes
1992	355	97%	Yes
1993	227	62%	No
1994	337	92%	Yes
1995	342	94%	Yes
1996	358	98%	Yes
1997	363	99%	Yes
1998	359	98%	Yes
1999	302	83%	No
2000	298	81%	No
2001	321	88%	No
2002	351	96%	Yes
2003	361	99%	Yes
2004	347	95%	Yes
2005	350	96%	Yes
2006	342	94%	Yes
2007	346	95%	Yes
2008	366	100%	Yes
2009	220	60%	No
2010	191	52%	No

Latest Records

Latest records at Tanlu
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 November 2010	Tanlu, MX	daily high min	20.0 C (68.0 F)	2.2 C (4.0 F)	12 years	11 of 100 (Routine)
29 November 2010	Tanlu, MX	daily high min	21.7 C (71.1 F)	3.9 C (7.0 F)	28 years	21 of 100 (Routine)
28 November 2010	Tanlu, MX	daily high min	20.6 C (69.1 F)	0.6 C (1.1 F)	20 years	10 of 100 (Routine)
27 November 2010	Tanlu, MX	daily high min (Tie)	20.0 C (68.0 F)	tie	23 years	2 of 100 (Routine)
26 November 2010	Tanlu, MX	daily high min (Tie)	20.6 C (69.1 F)	tie	12 years	1 of 100 (Routine)
20 November 2010	Tanlu, MX	daily high min (Tie)	20.0 C (68.0 F)	tie	12 years	1 of 100 (Routine)
8 November 2010	Tanlu, MX	daily low min	5.6 C (42.1 F)	6.1 C (11.0 F)	5 years	20 of 100 (Routine)
7 November 2010	Tanlu, MX	daily low min	6.7 C (44.1 F)	2.2 C (4.0 F)	8 years	10 of 100 (Routine)
6 November 2010	Tanlu, MX	daily low min	5.6 C (42.1 F)	1.6 C (2.9 F)	28 years	15 of 100 (Routine)
28 October 2010	Tanlu, MX	daily rain	24.9 mm (1.0 in)	3.6 mm (0.14 in)	36 years	15 of 100 (Routine)
25 October 2010	Tanlu, MX	daily high max (Tie)	38.9 C (102.0 F)	tie	12 years	1 of 100 (Routine)
19 October 2010	Tanlu, MX	daily high min (Tie)	22.8 C (73.0 F)	tie	16 years	1 of 100 (Routine)
4 October 2010	Tanlu, MX	daily high min (Tie)	22.8 C (73.0 F)	tie	33 years	3 of 100 (Routine)
20 September 2010	Tanlu, MX	daily rain	39.9 mm (1.6 in)	2.1 mm (0.08 in)	28 years	11 of 100 (Routine)
3 September 2010	Tanlu, MX	daily high max	40.6 C (105.1 F)	2.3 C (4.1 F)	28 years	17 of 100 (Routine)
30 August 2010	Tanlu, MX	daily high max (Tie)	35.6 C (96.1 F)	tie	29 years	2 of 100 (Routine)
25 August 2010	Tanlu, MX	daily rain	24.9 mm (1.0 in)	5.1 mm (0.20 in)	28 years	13 of 100 (Routine)
20 August 2010	Tanlu, MX	daily high max	41.7 C (107.1 F)	4.5 C (8.1 F)	28 years	25 of 100 (Routine)
20 August 2010	Tanlu, MX	daily high min	25.0 C (77.0 F)	0.6 C (1.1 F)	28 years	14 of 100 (Routine)
19 August 2010	Tanlu, MX	daily high max	40.0 C (104.0 F)	3.3 C (5.9 F)	28 years	21 of 100 (Routine)

Climate Trend

26 complete years, 1974 to 2008

One stripe for each of 26 complete years at Tanlu, 1974 to 2008. Blue stripes are years cooler than the station's own mean of 24.0 C (75.2 F); red stripes are warmer. The coolest year was 1992, at 22.4 C (72.4 F), and the warmest was 1998, at 25.5 C (77.8 F). The strongest colour marks a difference of 1.6 C (2.9 F).

Annual mean temperature at Tanlu as warming stripes, 1974 to 2008
Year	Annual mean temperature	Difference from the station mean
1974	23.4 C	-0.58 C
1975	23.4 C	-0.61 C
1977	23.8 C	-0.24 C
1978	23.8 C	-0.24 C
1979	23.4 C	-0.64 C
1980	24.1 C	+0.07 C
1981	23.6 C	-0.46 C
1983	24.2 C	+0.20 C
1984	23.5 C	-0.50 C
1985	24.0 C	-0.01 C
1986	24.2 C	+0.17 C
1987	23.5 C	-0.57 C
1988	24.0 C	+0.00 C
1989	24.4 C	+0.33 C
1992	22.4 C	-1.60 C
1994	24.6 C	+0.57 C
1995	25.2 C	+1.18 C
1996	24.2 C	+0.20 C
1997	24.5 C	+0.45 C
1998	25.5 C	+1.45 C
2003	24.9 C	+0.86 C
2004	23.9 C	-0.15 C
2005	24.3 C	+0.31 C
2006	24.6 C	+0.55 C
2007	23.8 C	-0.20 C
2008	23.4 C	-0.66 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

1973 to 2010

Yearly extremes at Tanlu: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	48.9 C (120.0 F)	1973	45.0 C (113.0 F)	38
Coldest night (TNn)	-0.6 C (30.9 F)	1983	2.8 C (37.0 F)	38
Wettest day (Rx1day)	320.0 mm (12.6 in)	1975	86.4 mm (3.4 in)	38
Wettest five days (Rx5day)	553.4 mm (21.8 in)	1975	197.0 mm (7.8 in)	38
Longest dry spell (CDD)	83 days	1995	36 days	38

Hottest day (TXx)

The hottest day of the year at Tanlu, 1973 to 2010. The record is 48.9 C (120.0 F) in 1973, marked on the chart; the median year is 45.0 C (113.0 F).

Hottest day (TXx) at Tanlu by year
Year	Hottest day (TXx)
1973	48.9 C (120.0 F)
1974	45.0 C (113.0 F)
1975	43.3 C (109.9 F)
1976	35.0 C (95.0 F)
1977	44.4 C (111.9 F)
1978	46.1 C (115.0 F)
1979	45.0 C (113.0 F)
1980	43.3 C (109.9 F)
1981	43.9 C (111.0 F)
1982	45.6 C (114.1 F)
1983	46.7 C (116.1 F)
1984	47.8 C (118.0 F)
1985	42.8 C (109.0 F)
1986	43.3 C (109.9 F)
1987	41.1 C (106.0 F)
1988	45.0 C (113.0 F)
1989	42.2 C (108.0 F)
1990	47.2 C (117.0 F)
1991	46.1 C (115.0 F)
1992	41.1 C (106.0 F)
1993	41.7 C (107.1 F)
1994	42.8 C (109.0 F)
1995	45.6 C (114.1 F)
1996	45.0 C (113.0 F)
1997	43.9 C (111.0 F)
1998	48.9 C (120.0 F)
1999	45.6 C (114.1 F)
2000	45.6 C (114.1 F)
2001	43.9 C (111.0 F)
2002	45.6 C (114.1 F)
2003	45.6 C (114.1 F)
2004	45.0 C (113.0 F)
2005	45.6 C (114.1 F)
2006	45.0 C (113.0 F)
2007	46.7 C (116.1 F)
2008	43.9 C (111.0 F)
2009	40.0 C (104.0 F)
2010	41.7 C (107.1 F)

Coldest night (TNn)

The coldest night of the year at Tanlu, 1973 to 2010. The record is -0.6 C (30.9 F) in 1983, marked on the chart; the median year is 2.8 C (37.0 F).

Coldest night (TNn) at Tanlu by year
Year	Coldest night (TNn)
1973	0.0 C (32.0 F)
1974	1.7 C (35.1 F)
1975	0.0 C (32.0 F)
1976	0.6 C (33.1 F)
1977	0.0 C (32.0 F)
1978	4.4 C (39.9 F)
1979	1.7 C (35.1 F)
1980	2.2 C (36.0 F)
1981	4.4 C (39.9 F)
1982	0.6 C (33.1 F)
1983	-0.6 C (30.9 F)
1984	3.9 C (39.0 F)
1985	0.0 C (32.0 F)
1986	0.0 C (32.0 F)
1987	2.2 C (36.0 F)
1988	1.7 C (35.1 F)
1989	0.0 C (32.0 F)
1990	1.7 C (35.1 F)
1991	6.7 C (44.1 F)
1992	3.3 C (37.9 F)
1993	5.6 C (42.1 F)
1994	7.8 C (46.0 F)
1995	8.3 C (46.9 F)
1996	3.3 C (37.9 F)
1997	2.8 C (37.0 F)
1998	5.6 C (42.1 F)
1999	5.6 C (42.1 F)
2000	1.7 C (35.1 F)
2001	3.9 C (39.0 F)
2002	5.0 C (41.0 F)
2003	1.7 C (35.1 F)
2004	0.0 C (32.0 F)
2005	7.8 C (46.0 F)
2006	3.9 C (39.0 F)
2007	5.0 C (41.0 F)
2008	5.6 C (42.1 F)
2009	5.0 C (41.0 F)
2010	2.8 C (37.0 F)

Wettest day (Rx1day)

The wettest day of the year at Tanlu, 1973 to 2010. The record is 320.0 mm (12.6 in) in 1975, marked on the chart; the median year is 86.4 mm (3.4 in).

Wettest day (Rx1day) at Tanlu by year
Year	Wettest day (Rx1day)
1973	99.8 mm (3.9 in)
1974	198.4 mm (7.8 in)
1975	320.0 mm (12.6 in)
1976	93.5 mm (3.7 in)
1977	57.9 mm (2.3 in)
1978	188.5 mm (7.4 in)
1979	131.8 mm (5.2 in)
1980	167.9 mm (6.6 in)
1981	170.9 mm (6.7 in)
1982	39.9 mm (1.6 in)
1983	84.3 mm (3.3 in)
1984	87.9 mm (3.5 in)
1985	43.4 mm (1.7 in)
1986	78.0 mm (3.1 in)
1987	41.9 mm (1.6 in)
1988	165.9 mm (6.5 in)
1989	55.9 mm (2.2 in)
1990	259.8 mm (10.2 in)
1991	199.9 mm (7.9 in)
1992	73.9 mm (2.9 in)
1993	120.4 mm (4.7 in)
1994	53.8 mm (2.1 in)
1995	81.3 mm (3.2 in)
1996	61.0 mm (2.4 in)
1997	132.8 mm (5.2 in)
1998	160.8 mm (6.3 in)
1999	71.9 mm (2.8 in)
2000	80.0 mm (3.1 in)
2001	57.9 mm (2.3 in)
2002	63.0 mm (2.5 in)
2003	140.0 mm (5.5 in)
2004	84.8 mm (3.3 in)
2005	82.8 mm (3.3 in)
2006	47.8 mm (1.9 in)
2007	199.9 mm (7.9 in)
2008	126.0 mm (5.0 in)
2009	116.8 mm (4.6 in)
2010	71.9 mm (2.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Tanlu, 1973 to 2010. The record is 553.4 mm (21.8 in) in 1975, marked on the chart; the median year is 197.0 mm (7.8 in).

Wettest five days (Rx5day) at Tanlu by year
Year	Wettest five days (Rx5day)
1973	270.1 mm (10.6 in)
1974	425.1 mm (16.7 in)
1975	553.4 mm (21.8 in)
1976	164.6 mm (6.5 in)
1977	81.3 mm (3.2 in)
1978	454.2 mm (17.9 in)
1979	348.0 mm (13.7 in)
1980	357.7 mm (14.1 in)
1981	395.9 mm (15.6 in)
1982	84.9 mm (3.3 in)
1983	193.7 mm (7.6 in)
1984	316.3 mm (12.5 in)
1985	77.7 mm (3.1 in)
1986	110.6 mm (4.4 in)
1987	78.2 mm (3.1 in)
1988	238.1 mm (9.4 in)
1989	60.7 mm (2.4 in)
1990	362.1 mm (14.3 in)
1991	379.0 mm (14.9 in)
1992	106.9 mm (4.2 in)
1993	230.5 mm (9.1 in)
1994	105.6 mm (4.2 in)
1995	172.1 mm (6.8 in)
1996	147.4 mm (5.8 in)
1997	231.9 mm (9.1 in)
1998	346.3 mm (13.6 in)
1999	170.7 mm (6.7 in)
2000	159.5 mm (6.3 in)
2001	67.8 mm (2.7 in)
2002	104.2 mm (4.1 in)
2003	215.4 mm (8.5 in)
2004	144.0 mm (5.7 in)
2005	234.2 mm (9.2 in)
2006	77.7 mm (3.1 in)
2007	372.2 mm (14.7 in)
2008	190.8 mm (7.5 in)
2009	200.2 mm (7.9 in)
2010	246.7 mm (9.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Tanlu, 1973 to 2010. The record is 83 days in 1995, marked on the chart; the median year is 36 days.

Longest dry spell (CDD) at Tanlu by year
Year	Longest dry spell (CDD)
1973	21 days
1974	28 days
1975	40 days
1976	40 days
1977	23 days
1978	29 days
1979	33 days
1980	23 days
1981	30 days
1982	32 days
1983	74 days
1984	64 days
1985	29 days
1986	47 days
1987	35 days
1988	30 days
1989	45 days
1990	35 days
1991	53 days
1992	39 days
1993	29 days
1994	32 days
1995	83 days
1996	42 days
1997	51 days
1998	45 days
1999	79 days
2000	33 days
2001	39 days
2002	38 days
2003	67 days
2004	31 days
2005	36 days
2006	35 days
2007	30 days
2008	81 days
2009	39 days
2010	20 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

31 years, 1974 to 2009

A day with at least 104.7 mm (4.1 in) of rain is expected about once in 2 years. A day with at least 373.7 mm (14.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Tanlu: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	104.7 mm (4.1 in)
5 years	167.4 mm (6.6 in)
10 years	212.4 mm (8.4 in)
25 years	273.6 mm (10.8 in)
50 years	322.3 mm (12.7 in)	Longer than the 31 years of record
100 years	373.7 mm (14.7 in)	Longer than the 31 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, 31 years of values from 1974 to 2009.

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: 320.0 mm (12.6 in) in 1975; 259.8 mm (10.2 in) in 1990; 199.9 mm (7.9 in) in 1991.

Download the Data

Data for Tanlu standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Tanlu 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 2026-10-14 (14 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).