Zimatlan Weather Records (MXN00020209)

Record envelope, standing records and threshold days for Zimatlan (MXN00020209), Mexico, with 43 years of record.

Key Facts for Zimatlan

Zimatlan (MXN00020209) is a weather station in Mexico at 16.85 latitude and -96.78 longitude, 2,879 m (9,445 ft) above sea level.
The station reports from 1970 to 2012, 43 years of record.
1,464 records set at Zimatlan still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Zimatlan set a monthly record daily precipitation of 51.8 mm (2.0 in) on 7 April 2012.

About the Station

Location: Mexico, 16.85 latitude, -96.78 longitude.
Elevation: 2,879 m (9,445 ft).
Period of record: 1970 to 2012, 43 years.
Eligible elements: 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 Zimatlan. 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 Zimatlan, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	35.0 C (95.0 F)	-1.1 C (30.0 F)	n/a	n/a
Feb	38.9 C (102.0 F)	-3.3 C (26.1 F)	n/a	n/a
Mar	37.8 C (100.0 F)	0.0 C (32.0 F)	n/a	n/a
Apr	38.9 C (102.0 F)	5.0 C (41.0 F)	n/a	n/a
May	40.0 C (104.0 F)	5.6 C (42.1 F)	n/a	n/a
Jun	36.7 C (98.1 F)	5.6 C (42.1 F)	n/a	n/a
Jul	36.7 C (98.1 F)	5.6 C (42.1 F)	n/a	n/a
Aug	36.7 C (98.1 F)	6.1 C (43.0 F)	n/a	n/a
Sep	33.9 C (93.0 F)	5.6 C (42.1 F)	n/a	n/a
Oct	35.0 C (95.0 F)	4.4 C (39.9 F)	n/a	n/a
Nov	33.9 C (93.0 F)	0.6 C (33.1 F)	n/a	n/a
Dec	33.9 C (93.0 F)	-0.6 C (30.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Zimatlan still stand. 1986 holds the most, with 149.

Standing records at Zimatlan by the year they were set
Year set	Standing records
1972	31
1973	71
1974	38
1975	35
1976	59
1977	48
1978	41
1979	45
1980	52
1981	47
1982	36
1983	47
1984	18
1985	9
1986	149
1987	85
1995	69
1996	51
1997	49
1998	62
1999	14
2000	66
2001	117
2002	66
2006	80
2007	15
2008	35
2009	6
2010	12
2011	8
2012	3

Wettest Day of Each Month

Sep: 102.1 mm (4.0 in)

The wettest day on record for each calendar month at Zimatlan. The most was 102.1 mm (4.0 in) on 28 September 1981.

Record daily precipitation for each month at Zimatlan
Month	Record daily precipitation (mm)	Date
Jan	32.5 mm (1.3 in)	31 January 1992
Feb	24.6 mm (1.0 in)	25 February 1983
Mar	36.3 mm (1.4 in)	5 March 2011
Apr	51.8 mm (2.0 in)	7 April 2012
May	63.0 mm (2.5 in)	29 May 1982
Jun	88.9 mm (3.5 in)	25 June 1998
Jul	63.5 mm (2.5 in)	16 July 1983
Aug	69.9 mm (2.8 in)	14 August 1993
Sep	102.1 mm (4.0 in)	28 September 1981
Oct	67.6 mm (2.7 in)	9 October 1991
Nov	48.0 mm (1.9 in)	15 November 1972
Dec	32.8 mm (1.3 in)	30 December 1995

Period of Record Coverage

1972 to 2012

31 years of record at Zimatlan, 1972 to 2012. 11 years have data for under 90 percent of days and are left out of rankings: 1972, 1984, 1985, 1986, 1987, 1995, 1999, 2002 and others.

Days with data per year at Zimatlan
Year	Days with data	Share of year	Complete
1972	164	45%	No
1973	365	100%	Yes
1974	335	92%	Yes
1975	363	99%	Yes
1976	365	100%	Yes
1977	363	99%	Yes
1978	364	100%	Yes
1979	334	92%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	365	100%	Yes
1984	121	33%	No
1985	109	30%	No
1986	280	77%	No
1987	151	41%	No
1995	263	72%	No
1996	366	100%	Yes
1997	365	100%	Yes
1998	334	92%	Yes
1999	242	66%	No
2000	365	100%	Yes
2001	365	100%	Yes
2002	151	41%	No
2006	365	100%	Yes
2007	304	83%	No
2008	366	100%	Yes
2009	365	100%	Yes
2010	303	83%	No
2011	334	92%	Yes
2012	121	33%	No

Latest Records

Latest records at Zimatlan
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
7 April 2012	Zimatlan, MX	monthly rain	51.8 mm (2.0 in)	0.2 mm (0.01 in)	25 years	21 of 100 (Routine)
24 March 2012	Zimatlan, MX	daily rain	5.8 mm (0.23 in)	5.5 mm (0.22 in)	38 years	20 of 100 (Routine)
23 March 2012	Zimatlan, MX	daily rain	8.4 mm (0.33 in)	8.4 mm (0.33 in)	39 years	20 of 100 (Routine)
27 August 2011	Zimatlan, MX	daily rain	21.8 mm (0.9 in)	3.5 mm (0.14 in)	25 years	14 of 100 (Routine)
22 August 2011	Zimatlan, MX	daily rain	36.3 mm (1.4 in)	10.1 mm (0.4 in)	21 years	21 of 100 (Routine)
5 August 2011	Zimatlan, MX	daily rain	25.4 mm (1.0 in)	12.2 mm (0.5 in)	32 years	26 of 100 (Routine)
2 August 2011	Zimatlan, MX	daily rain	7.9 mm (0.31 in)	3.8 mm (0.15 in)	30 years	17 of 100 (Routine)
27 July 2011	Zimatlan, MX	daily rain	22.4 mm (0.9 in)	7.4 mm (0.29 in)	9 years	13 of 100 (Routine)
14 July 2011	Zimatlan, MX	daily rain	42.4 mm (1.7 in)	20.8 mm (0.8 in)	25 years	32 of 100 (Routine)
8 July 2011	Zimatlan, MX	daily rain	19.8 mm (0.8 in)	7.6 mm (0.30 in)	17 years	16 of 100 (Routine)
28 June 2011	Zimatlan, MX	daily rain	53.6 mm (2.1 in)	18.5 mm (0.7 in)	25 years	24 of 100 (Routine)
18 April 2011	Zimatlan, MX	daily rain	15.5 mm (0.6 in)	2.5 mm (0.10 in)	13 years	10 of 100 (Routine)
14 March 2011	Zimatlan, MX	daily rain	18.3 mm (0.7 in)	7.4 mm (0.29 in)	16 years	18 of 100 (Routine)
5 March 2011	Zimatlan, MX	monthly rain	36.3 mm (1.4 in)	8.9 mm (0.35 in)	30 years	35 of 100 (Notable)
27 September 2010	Zimatlan, MX	daily rain	41.9 mm (1.6 in)	10.4 mm (0.4 in)	24 years	20 of 100 (Routine)
26 September 2010	Zimatlan, MX	daily rain	19.8 mm (0.8 in)	5.3 mm (0.21 in)	8 years	10 of 100 (Routine)
19 September 2010	Zimatlan, MX	daily rain	41.9 mm (1.6 in)	10.4 mm (0.4 in)	20 years	19 of 100 (Routine)
18 September 2010	Zimatlan, MX	daily rain	38.4 mm (1.5 in)	22.4 mm (0.9 in)	32 years	33 of 100 (Routine)
14 May 2010	Zimatlan, MX	daily rain	50.8 mm (2.0 in)	16.0 mm (0.6 in)	25 years	27 of 100 (Routine)
8 April 2010	Zimatlan, MX	daily rain	28.4 mm (1.1 in)	23.3 mm (0.9 in)	29 years	34 of 100 (Routine)

Climate Trend

16 complete years, 1973 to 2009

One stripe for each of 16 complete years at Zimatlan, 1973 to 2009. Blue stripes are years cooler than the station's own mean of 20.3 C (68.6 F); red stripes are warmer. The coolest year was 1983, at 19.1 C (66.4 F), and the warmest was 2001, at 22.4 C (72.3 F). The strongest colour marks a difference of 2.1 C (3.8 F).

Annual mean temperature at Zimatlan as warming stripes, 1973 to 2009
Year	Annual mean temperature	Difference from the station mean
1973	20.6 C	+0.22 C
1975	19.7 C	-0.59 C
1976	19.2 C	-1.10 C
1977	19.9 C	-0.48 C
1978	19.8 C	-0.51 C
1980	19.8 C	-0.53 C
1981	19.2 C	-1.11 C
1982	19.3 C	-1.08 C
1983	19.1 C	-1.22 C
1996	20.5 C	+0.20 C
1997	21.3 C	+0.93 C
2000	21.2 C	+0.88 C
2001	22.4 C	+2.07 C
2006	21.2 C	+0.91 C
2008	21.3 C	+0.96 C
2009	20.7 C	+0.39 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

1970 to 2012

Yearly extremes at Zimatlan: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	40.0 C (104.0 F)	1998	35.6 C (96.1 F)	31
Coldest night (TNn)	-3.3 C (26.1 F)	1976	1.7 C (35.1 F)	31
Wettest day (Rx1day)	102.1 mm (4.0 in)	1981	50.8 mm (2.0 in)	39
Wettest five days (Rx5day)	187.7 mm (7.4 in)	1993	84.1 mm (3.3 in)	39
Longest dry spell (CDD)	131 days	1998	64 days	39

Hottest day (TXx)

The hottest day of the year at Zimatlan, 1970 to 2012. The record is 40.0 C (104.0 F) in 1998, marked on the chart; the median year is 35.6 C (96.1 F).

Hottest day (TXx) at Zimatlan by year
Year	Hottest day (TXx)
1970	n/a
1972	32.8 C (91.0 F)
1973	37.8 C (100.0 F)
1974	36.7 C (98.1 F)
1975	36.1 C (97.0 F)
1976	33.9 C (93.0 F)
1977	35.0 C (95.0 F)
1978	38.9 C (102.0 F)
1979	35.0 C (95.0 F)
1980	35.0 C (95.0 F)
1981	35.0 C (95.0 F)
1982	35.0 C (95.0 F)
1983	38.9 C (102.0 F)
1984	35.6 C (96.1 F)
1985	30.0 C (86.0 F)
1986	31.7 C (89.1 F)
1987	38.9 C (102.0 F)
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	35.6 C (96.1 F)
1996	35.0 C (95.0 F)
1997	36.7 C (98.1 F)
1998	40.0 C (104.0 F)
1999	36.7 C (98.1 F)
2000	38.9 C (102.0 F)
2001	37.8 C (100.0 F)
2002	36.7 C (98.1 F)
2006	37.8 C (100.0 F)
2007	33.9 C (93.0 F)
2008	38.9 C (102.0 F)
2009	37.8 C (100.0 F)
2010	35.6 C (96.1 F)
2011	35.0 C (95.0 F)
2012	35.0 C (95.0 F)

Coldest night (TNn)

The coldest night of the year at Zimatlan, 1970 to 2012. The record is -3.3 C (26.1 F) in 1976, marked on the chart; the median year is 1.7 C (35.1 F).

Coldest night (TNn) at Zimatlan by year
Year	Coldest night (TNn)
1970	n/a
1972	1.7 C (35.1 F)
1973	-1.1 C (30.0 F)
1974	0.0 C (32.0 F)
1975	1.7 C (35.1 F)
1976	-3.3 C (26.1 F)
1977	1.1 C (34.0 F)
1978	2.8 C (37.0 F)
1979	0.6 C (33.1 F)
1980	-0.6 C (30.9 F)
1981	0.6 C (33.1 F)
1982	0.0 C (32.0 F)
1983	0.0 C (32.0 F)
1984	1.7 C (35.1 F)
1985	0.6 C (33.1 F)
1986	-0.6 C (30.9 F)
1987	-3.3 C (26.1 F)
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	5.0 C (41.0 F)
1996	0.6 C (33.1 F)
1997	0.6 C (33.1 F)
1998	2.8 C (37.0 F)
1999	2.8 C (37.0 F)
2000	1.7 C (35.1 F)
2001	7.8 C (46.0 F)
2002	5.0 C (41.0 F)
2006	0.6 C (33.1 F)
2007	5.0 C (41.0 F)
2008	2.8 C (37.0 F)
2009	3.9 C (39.0 F)
2010	2.8 C (37.0 F)
2011	1.7 C (35.1 F)
2012	6.7 C (44.1 F)

Wettest day (Rx1day)

The wettest day of the year at Zimatlan, 1970 to 2012. The record is 102.1 mm (4.0 in) in 1981, marked on the chart; the median year is 50.8 mm (2.0 in).

Wettest day (Rx1day) at Zimatlan by year
Year	Wettest day (Rx1day)
1970	1.3 mm (0.05 in)
1972	48.0 mm (1.9 in)
1973	56.4 mm (2.2 in)
1974	50.3 mm (2.0 in)
1975	52.8 mm (2.1 in)
1976	40.9 mm (1.6 in)
1977	37.3 mm (1.5 in)
1978	44.2 mm (1.7 in)
1979	52.3 mm (2.1 in)
1980	51.3 mm (2.0 in)
1981	102.1 mm (4.0 in)
1982	63.0 mm (2.5 in)
1983	63.5 mm (2.5 in)
1984	34.8 mm (1.4 in)
1985	38.9 mm (1.5 in)
1986	51.6 mm (2.0 in)
1987	49.0 mm (1.9 in)
1988	47.5 mm (1.9 in)
1989	77.7 mm (3.1 in)
1990	51.1 mm (2.0 in)
1991	67.6 mm (2.7 in)
1992	38.9 mm (1.5 in)
1993	85.1 mm (3.4 in)
1994	49.0 mm (1.9 in)
1995	41.4 mm (1.6 in)
1996	54.4 mm (2.1 in)
1997	32.3 mm (1.3 in)
1998	88.9 mm (3.5 in)
1999	24.4 mm (1.0 in)
2000	36.8 mm (1.4 in)
2001	64.0 mm (2.5 in)
2002	15.0 mm (0.6 in)
2006	32.3 mm (1.3 in)
2007	51.3 mm (2.0 in)
2008	35.3 mm (1.4 in)
2009	52.3 mm (2.1 in)
2010	50.8 mm (2.0 in)
2011	53.6 mm (2.1 in)
2012	51.8 mm (2.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Zimatlan, 1970 to 2012. The record is 187.7 mm (7.4 in) in 1993, marked on the chart; the median year is 84.1 mm (3.3 in).

Wettest five days (Rx5day) at Zimatlan by year
Year	Wettest five days (Rx5day)
1970	1.3 mm (0.05 in)
1972	77.7 mm (3.1 in)
1973	78.0 mm (3.1 in)
1974	134.4 mm (5.3 in)
1975	99.1 mm (3.9 in)
1976	75.5 mm (3.0 in)
1977	46.2 mm (1.8 in)
1978	68.1 mm (2.7 in)
1979	85.0 mm (3.3 in)
1980	65.3 mm (2.6 in)
1981	164.6 mm (6.5 in)
1982	73.4 mm (2.9 in)
1983	81.6 mm (3.2 in)
1984	92.4 mm (3.6 in)
1985	73.7 mm (2.9 in)
1986	117.4 mm (4.6 in)
1987	95.7 mm (3.8 in)
1988	121.8 mm (4.8 in)
1989	134.6 mm (5.3 in)
1990	69.1 mm (2.7 in)
1991	105.7 mm (4.2 in)
1992	67.6 mm (2.7 in)
1993	187.7 mm (7.4 in)
1994	85.0 mm (3.3 in)
1995	86.4 mm (3.4 in)
1996	88.0 mm (3.5 in)
1997	91.9 mm (3.6 in)
1998	120.4 mm (4.7 in)
1999	54.1 mm (2.1 in)
2000	72.1 mm (2.8 in)
2001	113.6 mm (4.5 in)
2002	35.3 mm (1.4 in)
2006	40.7 mm (1.6 in)
2007	84.1 mm (3.3 in)
2008	77.0 mm (3.0 in)
2009	96.7 mm (3.8 in)
2010	106.2 mm (4.2 in)
2011	81.0 mm (3.2 in)
2012	68.3 mm (2.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Zimatlan, 1970 to 2012. The record is 131 days in 1998, marked on the chart; the median year is 64 days.

Longest dry spell (CDD) at Zimatlan by year
Year	Longest dry spell (CDD)
1970	30 days
1972	20 days
1973	95 days
1974	63 days
1975	76 days
1976	86 days
1977	51 days
1978	53 days
1979	44 days
1980	64 days
1981	62 days
1982	60 days
1983	68 days
1984	96 days
1985	59 days
1986	54 days
1987	92 days
1988	54 days
1989	101 days
1990	26 days
1991	114 days
1992	52 days
1993	39 days
1994	115 days
1995	57 days
1996	81 days
1997	98 days
1998	131 days
1999	117 days
2000	87 days
2001	77 days
2002	52 days
2006	114 days
2007	70 days
2008	78 days
2009	91 days
2010	64 days
2011	63 days
2012	51 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

30 years, 1973 to 2011

A day with at least 48.4 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 111.2 mm (4.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Zimatlan: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	48.4 mm (1.9 in)
5 years	62.5 mm (2.5 in)
10 years	72.8 mm (2.9 in)
25 years	87.1 mm (3.4 in)
50 years	98.8 mm (3.9 in)	Longer than the 30 years of record
100 years	111.2 mm (4.4 in)	Longer than the 30 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, 30 years of values from 1973 to 2011.

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: 102.1 mm (4.0 in) in 1981; 88.9 mm (3.5 in) in 1998; 77.7 mm (3.1 in) in 1989.

Download the Data

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