Cachan Weather Records (MXN00016208)

Record envelope, standing records and threshold days for Cachan (MXN00016208), Mexico, with 35 years of record.

Key Facts for Cachan

Cachan (MXN00016208) is a weather station in Mexico at 18.27 latitude and -103.22 longitude, 79 m (259 ft) above sea level.
The station reports from 1977 to 2011, 35 years of record.
1,464 records set at Cachan still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Cachan tied a daily record low maximum temperature of 29.4 C (84.9 F) on 30 October 2011.

About the Station

Location: Mexico, 18.27 latitude, -103.22 longitude.
Elevation: 79 m (259 ft).
Period of record: 1977 to 2011, 35 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 Cachan. 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 Cachan, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	35.6 C (96.1 F)	10.6 C (51.1 F)	n/a	n/a
Feb	37.8 C (100.0 F)	12.8 C (55.0 F)	n/a	n/a
Mar	37.8 C (100.0 F)	10.0 C (50.0 F)	n/a	n/a
Apr	35.6 C (96.1 F)	11.1 C (52.0 F)	n/a	n/a
May	38.9 C (102.0 F)	13.9 C (57.0 F)	n/a	n/a
Jun	38.9 C (102.0 F)	17.8 C (64.0 F)	n/a	n/a
Jul	38.9 C (102.0 F)	20.0 C (68.0 F)	n/a	n/a
Aug	37.8 C (100.0 F)	20.0 C (68.0 F)	n/a	n/a
Sep	38.9 C (102.0 F)	20.0 C (68.0 F)	n/a	n/a
Oct	35.6 C (96.1 F)	16.7 C (62.1 F)	n/a	n/a
Nov	39.4 C (102.9 F)	10.6 C (51.1 F)	n/a	n/a
Dec	33.9 C (93.0 F)	10.0 C (50.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Cachan still stand. 2009 holds the most, with 182.

Standing records at Cachan by the year they were set
Year set	Standing records
1979	5
1980	56
1981	68
1982	58
1983	40
1984	56
1985	60
1986	54
1987	50
1988	23
1989	21
1990	74
1991	40
1992	52
1993	30
1994	38
1995	29
1996	48
1997	46
1998	30
1999	36
2000	27
2001	8
2002	27
2003	8
2005	21
2006	41
2007	36
2008	35
2009	182
2010	91
2011	74

Wettest Day of Each Month

Sep: 194.1 mm (7.6 in)

The wettest day on record for each calendar month at Cachan. The most was 194.1 mm (7.6 in) on 19 September 2003.

Record daily precipitation for each month at Cachan
Month	Record daily precipitation (mm)	Date
Jan	92.2 mm (3.6 in)	27 January 1992
Feb	39.9 mm (1.6 in)	2 February 2010
Mar	35.1 mm (1.4 in)	1 March 2001
Apr	5.8 mm (0.23 in)	7 April 2006
May	105.9 mm (4.2 in)	26 May 1983
Jun	169.9 mm (6.7 in)	20 June 2011
Jul	193.3 mm (7.6 in)	1 July 2011
Aug	121.4 mm (4.8 in)	28 August 2007
Sep	194.1 mm (7.6 in)	19 September 2003
Oct	179.3 mm (7.1 in)	11 October 2011
Nov	108.2 mm (4.3 in)	5 November 2002
Dec	38.4 mm (1.5 in)	5 December 1983

Period of Record Coverage

1979 to 2011

32 years of record at Cachan, 1979 to 2011. 15 years have data for under 90 percent of days and are left out of rankings: 1979, 1980, 1986, 1988, 1989, 1993, 1997, 1998 and others.

Days with data per year at Cachan
Year	Days with data	Share of year	Complete
1979	31	8%	No
1980	306	84%	No
1981	334	92%	Yes
1982	365	100%	Yes
1983	364	100%	Yes
1984	334	91%	Yes
1985	365	100%	Yes
1986	306	84%	No
1987	361	99%	Yes
1988	329	90%	No
1989	327	90%	No
1990	331	91%	Yes
1991	334	92%	Yes
1992	334	91%	Yes
1993	318	87%	No
1994	330	90%	Yes
1995	329	90%	Yes
1996	340	93%	Yes
1997	315	86%	No
1998	321	88%	No
1999	314	86%	No
2000	366	100%	Yes
2001	316	87%	No
2002	354	97%	Yes
2003	284	78%	No
2005	214	59%	No
2006	334	92%	Yes
2007	272	75%	No
2008	273	75%	No
2009	364	100%	Yes
2010	360	99%	Yes
2011	302	83%	No

Latest Records

Latest records at Cachan
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 October 2011	Cachan, MX	daily low max (Tie)	29.4 C (84.9 F)	tie	20 years	2 of 100 (Routine)
24 October 2011	Cachan, MX	daily rain	49.8 mm (2.0 in)	24.4 mm (1.0 in)	20 years	16 of 100 (Routine)
20 October 2011	Cachan, MX	daily low max	27.8 C (82.0 F)	1.6 C (2.9 F)	20 years	20 of 100 (Routine)
19 October 2011	Cachan, MX	daily rain	18.8 mm (0.7 in)	15.8 mm (0.6 in)	8 years	9 of 100 (Routine)
16 October 2011	Cachan, MX	daily high min (Tie)	23.9 C (75.0 F)	tie	24 years	2 of 100 (Routine)
13 October 2011	Cachan, MX	daily low max	28.9 C (84.0 F)	1.1 C (2.0 F)	5 years	11 of 100 (Routine)
12 October 2011	Cachan, MX	daily low max	28.3 C (82.9 F)	1.7 C (3.1 F)	13 years	18 of 100 (Routine)
11 October 2011	Cachan, MX	daily low max	25.0 C (77.0 F)	5.0 C (9.0 F)	8 years	39 of 100 (Notable)
11 October 2011	Cachan, MX	monthly rain	179.3 mm (7.1 in)	5.8 mm (0.23 in)	2 years	14 of 100 (Routine)
9 October 2011	Cachan, MX	daily high min (Tie)	23.9 C (75.0 F)	tie	12 years	1 of 100 (Routine)
1 October 2011	Cachan, MX	daily high min (Tie)	23.9 C (75.0 F)	tie	16 years	1 of 100 (Routine)
22 September 2011	Cachan, MX	daily high min (Tie)	23.9 C (75.0 F)	tie	22 years	2 of 100 (Routine)
17 September 2011	Cachan, MX	daily low max (Tie)	30.0 C (86.0 F)	tie	20 years	2 of 100 (Routine)
15 September 2011	Cachan, MX	daily high min	25.0 C (77.0 F)	0.6 C (1.1 F)	5 years	10 of 100 (Routine)
15 September 2011	Cachan, MX	daily low max (Tie)	27.8 C (82.0 F)	tie	26 years	2 of 100 (Routine)
13 September 2011	Cachan, MX	daily high min	24.4 C (75.9 F)	0.5 C (0.9 F)	22 years	14 of 100 (Routine)
12 September 2011	Cachan, MX	daily high min (Tie)	23.9 C (75.0 F)	tie	14 years	1 of 100 (Routine)
8 September 2011	Cachan, MX	daily high min (Tie)	25.0 C (77.0 F)	tie	21 years	2 of 100 (Routine)
7 September 2011	Cachan, MX	daily high min (Tie)	25.0 C (77.0 F)	tie	10 years	1 of 100 (Routine)
6 September 2011	Cachan, MX	daily low max	28.9 C (84.0 F)	0.5 C (0.9 F)	29 years	13 of 100 (Routine)

Extremes by Year

1977 to 2011

Yearly extremes at Cachan: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	39.4 C (102.9 F)	2010	35.3 C (95.5 F)	32
Coldest night (TNn)	10.0 C (50.0 F)	1999	12.8 C (55.0 F)	32
Wettest day (Rx1day)	194.1 mm (7.6 in)	2003	89.0 mm (3.5 in)	34
Wettest five days (Rx5day)	393.2 mm (15.5 in)	2009	197.0 mm (7.8 in)	34
Longest dry spell (CDD)	172 days	2009	120 days	34

Hottest day (TXx)

The hottest day of the year at Cachan, 1977 to 2011. The record is 39.4 C (102.9 F) in 2010, marked on the chart; the median year is 35.3 C (95.5 F).

Hottest day (TXx) at Cachan by year
Year	Hottest day (TXx)
1977	n/a
1978	n/a
1979	34.4 C (93.9 F)
1980	35.0 C (95.0 F)
1981	34.4 C (93.9 F)
1982	36.1 C (97.0 F)
1983	35.0 C (95.0 F)
1984	34.4 C (93.9 F)
1985	33.9 C (93.0 F)
1986	35.0 C (95.0 F)
1987	35.6 C (96.1 F)
1988	35.0 C (95.0 F)
1989	38.9 C (102.0 F)
1990	35.6 C (96.1 F)
1991	36.1 C (97.0 F)
1992	38.9 C (102.0 F)
1993	35.6 C (96.1 F)
1994	35.0 C (95.0 F)
1995	35.0 C (95.0 F)
1996	36.1 C (97.0 F)
1997	36.7 C (98.1 F)
1998	35.0 C (95.0 F)
1999	35.6 C (96.1 F)
2000	35.6 C (96.1 F)
2001	35.0 C (95.0 F)
2002	33.9 C (93.0 F)
2003	33.9 C (93.0 F)
2005	35.0 C (95.0 F)
2006	35.6 C (96.1 F)
2007	35.6 C (96.1 F)
2008	35.0 C (95.0 F)
2009	38.9 C (102.0 F)
2010	39.4 C (102.9 F)
2011	38.9 C (102.0 F)

Coldest night (TNn)

The coldest night of the year at Cachan, 1977 to 2011. The record is 10.0 C (50.0 F) in 1999, marked on the chart; the median year is 12.8 C (55.0 F).

Coldest night (TNn) at Cachan by year
Year	Coldest night (TNn)
1977	n/a
1978	n/a
1979	19.4 C (66.9 F)
1980	11.7 C (53.1 F)
1981	10.6 C (51.1 F)
1982	13.9 C (57.0 F)
1983	13.3 C (55.9 F)
1984	12.8 C (55.0 F)
1985	13.3 C (55.9 F)
1986	11.7 C (53.1 F)
1987	12.2 C (54.0 F)
1988	13.9 C (57.0 F)
1989	13.9 C (57.0 F)
1990	12.8 C (55.0 F)
1991	12.8 C (55.0 F)
1992	12.8 C (55.0 F)
1993	14.4 C (57.9 F)
1994	15.0 C (59.0 F)
1995	12.8 C (55.0 F)
1996	13.9 C (57.0 F)
1997	10.6 C (51.1 F)
1998	12.8 C (55.0 F)
1999	10.0 C (50.0 F)
2000	10.6 C (51.1 F)
2001	14.4 C (57.9 F)
2002	13.9 C (57.0 F)
2003	13.9 C (57.0 F)
2005	15.6 C (60.1 F)
2006	15.0 C (59.0 F)
2007	12.8 C (55.0 F)
2008	10.0 C (50.0 F)
2009	12.8 C (55.0 F)
2010	12.2 C (54.0 F)
2011	11.1 C (52.0 F)

Wettest day (Rx1day)

The wettest day of the year at Cachan, 1977 to 2011. The record is 194.1 mm (7.6 in) in 2003, marked on the chart; the median year is 89.0 mm (3.5 in).

Wettest day (Rx1day) at Cachan by year
Year	Wettest day (Rx1day)
1977	70.4 mm (2.8 in)
1978	63.8 mm (2.5 in)
1979	60.5 mm (2.4 in)
1980	73.9 mm (2.9 in)
1981	114.8 mm (4.5 in)
1982	67.1 mm (2.6 in)
1983	105.9 mm (4.2 in)
1984	91.2 mm (3.6 in)
1985	72.6 mm (2.9 in)
1986	54.9 mm (2.2 in)
1987	98.8 mm (3.9 in)
1988	88.1 mm (3.5 in)
1989	94.5 mm (3.7 in)
1990	82.3 mm (3.2 in)
1991	74.2 mm (2.9 in)
1992	92.2 mm (3.6 in)
1993	97.8 mm (3.9 in)
1994	72.9 mm (2.9 in)
1995	53.3 mm (2.1 in)
1996	79.8 mm (3.1 in)
1997	61.2 mm (2.4 in)
1998	89.9 mm (3.5 in)
1999	85.1 mm (3.4 in)
2000	46.2 mm (1.8 in)
2001	87.9 mm (3.5 in)
2002	108.2 mm (4.3 in)
2003	194.1 mm (7.6 in)
2005	113.8 mm (4.5 in)
2006	112.8 mm (4.4 in)
2007	190.0 mm (7.5 in)
2008	154.9 mm (6.1 in)
2009	173.5 mm (6.8 in)
2010	155.4 mm (6.1 in)
2011	193.3 mm (7.6 in)

Wettest five days (Rx5day)

The wettest five days of the year at Cachan, 1977 to 2011. The record is 393.2 mm (15.5 in) in 2009, marked on the chart; the median year is 197.0 mm (7.8 in).

Wettest five days (Rx5day) at Cachan by year
Year	Wettest five days (Rx5day)
1977	77.0 mm (3.0 in)
1978	150.9 mm (5.9 in)
1979	62.0 mm (2.4 in)
1980	122.7 mm (4.8 in)
1981	333.8 mm (13.1 in)
1982	107.5 mm (4.2 in)
1983	236.1 mm (9.3 in)
1984	132.4 mm (5.2 in)
1985	116.9 mm (4.6 in)
1986	112.8 mm (4.4 in)
1987	194.5 mm (7.7 in)
1988	291.8 mm (11.5 in)
1989	162.3 mm (6.4 in)
1990	145.3 mm (5.7 in)
1991	114.3 mm (4.5 in)
1992	264.4 mm (10.4 in)
1993	280.5 mm (11.0 in)
1994	156.0 mm (6.1 in)
1995	132.6 mm (5.2 in)
1996	224.6 mm (8.8 in)
1997	110.2 mm (4.3 in)
1998	124.0 mm (4.9 in)
1999	238.3 mm (9.4 in)
2000	101.4 mm (4.0 in)
2001	266.7 mm (10.5 in)
2002	227.1 mm (8.9 in)
2003	356.1 mm (14.0 in)
2005	217.7 mm (8.6 in)
2006	199.5 mm (7.9 in)
2007	221.5 mm (8.7 in)
2008	204.5 mm (8.1 in)
2009	393.2 mm (15.5 in)
2010	223.1 mm (8.8 in)
2011	378.0 mm (14.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Cachan, 1977 to 2011. The record is 172 days in 2009, marked on the chart; the median year is 120 days.

Longest dry spell (CDD) at Cachan by year
Year	Longest dry spell (CDD)
1977	81 days
1978	107 days
1979	120 days
1980	127 days
1981	137 days
1982	148 days
1983	125 days
1984	135 days
1985	95 days
1986	85 days
1987	158 days
1988	68 days
1989	117 days
1990	90 days
1991	110 days
1992	74 days
1993	57 days
1994	131 days
1995	134 days
1996	124 days
1997	78 days
1998	131 days
1999	96 days
2000	144 days
2001	81 days
2002	116 days
2003	131 days
2005	85 days
2006	96 days
2007	159 days
2008	161 days
2009	172 days
2010	119 days
2011	169 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 Cachan standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Cachan 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).