Dzan Weather Records (MXN00031009)

Record envelope, standing records and threshold days for Dzan (MXN00031009), Mexico, with 42 years of record.

Key Facts for Dzan

Dzan (MXN00031009) is a weather station in Mexico at 20.35 latitude and -89.47 longitude, 26 m (85 ft) above sea level.
The station reports from 1966 to 2007, 42 years of record.
1,464 records set at Dzan still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Dzan tied a daily record high minimum temperature of 21.7 C (71.1 F) on 30 December 2007.

About the Station

Location: Mexico, 20.35 latitude, -89.47 longitude.
Elevation: 26 m (85 ft).
Period of record: 1966 to 2007, 42 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 Dzan. 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 Dzan, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	36.7 C (98.1 F)	1.7 C (35.1 F)	n/a	n/a
Feb	38.9 C (102.0 F)	3.9 C (39.0 F)	n/a	n/a
Mar	41.7 C (107.1 F)	4.4 C (39.9 F)	n/a	n/a
Apr	41.7 C (107.1 F)	6.7 C (44.1 F)	n/a	n/a
May	41.7 C (107.1 F)	12.8 C (55.0 F)	n/a	n/a
Jun	40.6 C (105.1 F)	16.7 C (62.1 F)	n/a	n/a
Jul	40.0 C (104.0 F)	12.8 C (55.0 F)	n/a	n/a
Aug	38.9 C (102.0 F)	13.3 C (55.9 F)	n/a	n/a
Sep	38.9 C (102.0 F)	12.8 C (55.0 F)	n/a	n/a
Oct	38.9 C (102.0 F)	10.0 C (50.0 F)	n/a	n/a
Nov	37.8 C (100.0 F)	5.6 C (42.1 F)	n/a	n/a
Dec	36.7 C (98.1 F)	2.8 C (37.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Dzan still stand. 2004 holds the most, with 195.

Standing records at Dzan by the year they were set
Year set	Standing records
1966	18
1967	23
1968	32
1969	23
1970	32
1971	39
1972	22
1973	34
1974	26
1975	23
1976	41
1977	28
1978	38
1979	25
1980	60
1981	40
1982	50
1983	42
1984	38
1985	26
1986	32
1987	65
1988	33
1989	26
1990	11
1991	8
1992	17
1998	32
1999	41
2000	24
2001	94
2002	127
2003	35
2004	195
2005	25
2006	22
2007	17

Wettest Day of Each Month

Mar: 190.0 mm (7.5 in)

The wettest day on record for each calendar month at Dzan. The most was 190.0 mm (7.5 in) on 6 March 1972.

Record daily precipitation for each month at Dzan
Month	Record daily precipitation (mm)	Date
Jan	149.9 mm (5.9 in)	12 January 1968
Feb	85.3 mm (3.4 in)	11 February 2002
Mar	190.0 mm (7.5 in)	6 March 1972
Apr	112.8 mm (4.4 in)	8 April 1974
May	114.8 mm (4.5 in)	28 May 1985
Jun	151.9 mm (6.0 in)	9 June 1988
Jul	91.4 mm (3.6 in)	29 July 1989
Aug	104.9 mm (4.1 in)	31 August 1994
Sep	140.0 mm (5.5 in)	17 September 1967
Oct	110.5 mm (4.4 in)	1 October 1989
Nov	76.2 mm (3.0 in)	18 November 2003
Dec	95.8 mm (3.8 in)	3 December 1990

Period of Record Coverage

1966 to 2007

37 years of record at Dzan, 1966 to 2007. 4 years have data for under 90 percent of days and are left out of rankings: 1966, 1969, 1998, 1999.

Days with data per year at Dzan
Year	Days with data	Share of year	Complete
1966	146	40%	No
1967	365	100%	Yes
1968	364	99%	Yes
1969	215	59%	No
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	334	92%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	335	92%	Yes
1981	365	100%	Yes
1982	364	100%	Yes
1983	365	100%	Yes
1984	366	100%	Yes
1985	364	100%	Yes
1986	365	100%	Yes
1987	364	100%	Yes
1988	366	100%	Yes
1989	365	100%	Yes
1990	365	100%	Yes
1991	365	100%	Yes
1992	335	92%	Yes
1998	118	32%	No
1999	276	76%	No
2000	366	100%	Yes
2001	358	98%	Yes
2002	354	97%	Yes
2003	358	98%	Yes
2004	352	96%	Yes
2005	357	98%	Yes
2006	345	95%	Yes
2007	359	98%	Yes

Latest Records

Latest records at Dzan
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 December 2007	Dzan, MX	daily high min (Tie)	21.7 C (71.1 F)	tie	0 years	1 of 100 (Routine)
19 December 2007	Dzan, MX	daily high min (Tie)	20.6 C (69.1 F)	tie	8 years	1 of 100 (Routine)
15 December 2007	Dzan, MX	daily high min (Tie)	20.6 C (69.1 F)	tie	30 years	3 of 100 (Routine)
14 December 2007	Dzan, MX	daily rain	46.2 mm (1.8 in)	28.4 mm (1.1 in)	16 years	25 of 100 (Routine)
5 December 2007	Dzan, MX	daily low max (Tie)	21.7 C (71.1 F)	tie	0 years	1 of 100 (Routine)
4 December 2007	Dzan, MX	daily high min (Tie)	20.6 C (69.1 F)	tie	16 years	2 of 100 (Routine)
29 November 2007	Dzan, MX	daily rain	36.3 mm (1.4 in)	8.4 mm (0.33 in)	30 years	18 of 100 (Routine)
12 November 2007	Dzan, MX	daily low max	20.6 C (69.1 F)	2.2 C (4.0 F)	4 years	11 of 100 (Routine)
11 November 2007	Dzan, MX	daily low max	20.6 C (69.1 F)	2.7 C (4.9 F)	4 years	13 of 100 (Routine)
6 November 2007	Dzan, MX	monthly high max (Tie)	37.8 C (100.0 F)	tie	18 years	4 of 100 (Routine)
30 October 2007	Dzan, MX	daily high min (Tie)	21.7 C (71.1 F)	tie	32 years	3 of 100 (Routine)
28 October 2007	Dzan, MX	daily rain	26.4 mm (1.0 in)	2.0 mm (0.08 in)	32 years	14 of 100 (Routine)
23 October 2007	Dzan, MX	daily high min (Tie)	22.8 C (73.0 F)	tie	33 years	3 of 100 (Routine)
22 October 2007	Dzan, MX	daily high min (Tie)	22.8 C (73.0 F)	tie	8 years	1 of 100 (Routine)
21 October 2007	Dzan, MX	daily high min (Tie)	21.7 C (71.1 F)	tie	38 years	3 of 100 (Routine)
16 October 2007	Dzan, MX	daily high min (Tie)	22.8 C (73.0 F)	tie	22 years	2 of 100 (Routine)
8 October 2007	Dzan, MX	daily rain	60.5 mm (2.4 in)	18.6 mm (0.7 in)	36 years	23 of 100 (Routine)
9 September 2007	Dzan, MX	daily rain	36.3 mm (1.4 in)	8.4 mm (0.33 in)	40 years	20 of 100 (Routine)
30 August 2007	Dzan, MX	daily high min (Tie)	23.9 C (75.0 F)	tie	5 years	1 of 100 (Routine)
25 August 2007	Dzan, MX	daily high min (Tie)	23.9 C (75.0 F)	tie	8 years	1 of 100 (Routine)

Climate Trend

29 complete years, 1967 to 2007

One stripe for each of 29 complete years at Dzan, 1967 to 2007. Blue stripes are years cooler than the station's own mean of 25.7 C (78.2 F); red stripes are warmer. The coolest year was 1981, at 23.9 C (75.1 F), and the warmest was 2001, at 27.7 C (81.9 F). The strongest colour marks a difference of 2.1 C (3.8 F).

Annual mean temperature at Dzan as warming stripes, 1967 to 2007
Year	Annual mean temperature	Difference from the station mean
1967	25.3 C	-0.38 C
1968	24.7 C	-0.98 C
1970	25.0 C	-0.68 C
1971	25.7 C	+0.03 C
1972	25.8 C	+0.09 C
1973	25.6 C	-0.06 C
1974	25.0 C	-0.72 C
1976	24.7 C	-1.01 C
1977	24.9 C	-0.74 C
1978	25.3 C	-0.37 C
1979	25.1 C	-0.59 C
1981	23.9 C	-1.74 C
1982	26.4 C	+0.74 C
1983	26.2 C	+0.48 C
1984	25.8 C	+0.08 C
1985	26.1 C	+0.39 C
1986	25.9 C	+0.23 C
1987	26.4 C	+0.74 C
1988	26.4 C	+0.74 C
1989	26.1 C	+0.42 C
1990	26.7 C	+1.04 C
1991	27.0 C	+1.30 C
2000	27.4 C	+1.76 C
2001	27.7 C	+2.07 C
2002	24.0 C	-1.63 C
2003	25.4 C	-0.27 C
2004	24.0 C	-1.68 C
2005	25.9 C	+0.24 C
2007	26.2 C	+0.52 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

1966 to 2007

Yearly extremes at Dzan: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	41.7 C (107.1 F)	1984	40.0 C (104.0 F)	37
Coldest night (TNn)	1.7 C (35.1 F)	1978	5.6 C (42.1 F)	37
Wettest day (Rx1day)	190.0 mm (7.5 in)	1972	91.4 mm (3.6 in)	42
Wettest five days (Rx5day)	337.5 mm (13.3 in)	1988	163.1 mm (6.4 in)	42
Longest dry spell (CDD)	98 days	1991	41 days	42

Hottest day (TXx)

The hottest day of the year at Dzan, 1966 to 2007. The record is 41.7 C (107.1 F) in 1984, marked on the chart; the median year is 40.0 C (104.0 F).

Hottest day (TXx) at Dzan by year
Year	Hottest day (TXx)
1966	37.2 C (99.0 F)
1967	38.9 C (102.0 F)
1968	40.0 C (104.0 F)
1969	40.6 C (105.1 F)
1970	40.0 C (104.0 F)
1971	40.6 C (105.1 F)
1972	40.0 C (104.0 F)
1973	40.6 C (105.1 F)
1974	40.0 C (104.0 F)
1975	40.0 C (104.0 F)
1976	41.1 C (106.0 F)
1977	38.9 C (102.0 F)
1978	41.1 C (106.0 F)
1979	39.4 C (102.9 F)
1980	40.6 C (105.1 F)
1981	38.9 C (102.0 F)
1982	40.6 C (105.1 F)
1983	40.6 C (105.1 F)
1984	41.7 C (107.1 F)
1985	40.6 C (105.1 F)
1986	40.0 C (104.0 F)
1987	40.6 C (105.1 F)
1988	41.1 C (106.0 F)
1989	38.9 C (102.0 F)
1990	35.6 C (96.1 F)
1991	35.6 C (96.1 F)
1992	38.9 C (102.0 F)
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	41.1 C (106.0 F)
1999	38.9 C (102.0 F)
2000	36.7 C (98.1 F)
2001	38.9 C (102.0 F)
2002	37.8 C (100.0 F)
2003	38.3 C (100.9 F)
2004	36.7 C (98.1 F)
2005	41.7 C (107.1 F)
2006	41.7 C (107.1 F)
2007	40.6 C (105.1 F)

Coldest night (TNn)

The coldest night of the year at Dzan, 1966 to 2007. The record is 1.7 C (35.1 F) in 1978, marked on the chart; the median year is 5.6 C (42.1 F).

Coldest night (TNn) at Dzan by year
Year	Coldest night (TNn)
1966	5.6 C (42.1 F)
1967	5.0 C (41.0 F)
1968	4.4 C (39.9 F)
1969	7.8 C (46.0 F)
1970	5.6 C (42.1 F)
1971	6.1 C (43.0 F)
1972	5.0 C (41.0 F)
1973	2.8 C (37.0 F)
1974	5.0 C (41.0 F)
1975	3.9 C (39.0 F)
1976	3.9 C (39.0 F)
1977	2.8 C (37.0 F)
1978	1.7 C (35.1 F)
1979	4.4 C (39.9 F)
1980	2.8 C (37.0 F)
1981	3.3 C (37.9 F)
1982	7.8 C (46.0 F)
1983	5.6 C (42.1 F)
1984	5.6 C (42.1 F)
1985	5.0 C (41.0 F)
1986	5.6 C (42.1 F)
1987	5.0 C (41.0 F)
1988	7.8 C (46.0 F)
1989	5.0 C (41.0 F)
1990	6.7 C (44.1 F)
1991	7.8 C (46.0 F)
1992	15.6 C (60.1 F)
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	7.8 C (46.0 F)
1999	12.8 C (55.0 F)
2000	12.8 C (55.0 F)
2001	10.0 C (50.0 F)
2002	5.0 C (41.0 F)
2003	5.0 C (41.0 F)
2004	10.0 C (50.0 F)
2005	7.8 C (46.0 F)
2006	5.0 C (41.0 F)
2007	5.6 C (42.1 F)

Wettest day (Rx1day)

The wettest day of the year at Dzan, 1966 to 2007. The record is 190.0 mm (7.5 in) in 1972, marked on the chart; the median year is 91.4 mm (3.6 in).

Wettest day (Rx1day) at Dzan by year
Year	Wettest day (Rx1day)
1966	89.7 mm (3.5 in)
1967	140.0 mm (5.5 in)
1968	149.9 mm (5.9 in)
1969	52.3 mm (2.1 in)
1970	59.9 mm (2.4 in)
1971	66.3 mm (2.6 in)
1972	190.0 mm (7.5 in)
1973	99.8 mm (3.9 in)
1974	131.3 mm (5.2 in)
1975	89.4 mm (3.5 in)
1976	53.3 mm (2.1 in)
1977	93.0 mm (3.7 in)
1978	69.9 mm (2.8 in)
1979	61.0 mm (2.4 in)
1980	63.2 mm (2.5 in)
1981	60.2 mm (2.4 in)
1982	98.0 mm (3.9 in)
1983	72.4 mm (2.9 in)
1984	54.9 mm (2.2 in)
1985	114.8 mm (4.5 in)
1986	77.0 mm (3.0 in)
1987	84.8 mm (3.3 in)
1988	151.9 mm (6.0 in)
1989	110.5 mm (4.4 in)
1990	95.8 mm (3.8 in)
1991	82.3 mm (3.2 in)
1992	98.3 mm (3.9 in)
1993	105.4 mm (4.1 in)
1994	104.9 mm (4.1 in)
1995	65.3 mm (2.6 in)
1996	95.3 mm (3.8 in)
1997	91.9 mm (3.6 in)
1998	76.5 mm (3.0 in)
1999	65.3 mm (2.6 in)
2000	76.5 mm (3.0 in)
2001	78.0 mm (3.1 in)
2002	119.9 mm (4.7 in)
2003	90.9 mm (3.6 in)
2004	95.0 mm (3.7 in)
2005	94.2 mm (3.7 in)
2006	103.6 mm (4.1 in)
2007	95.3 mm (3.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Dzan, 1966 to 2007. The record is 337.5 mm (13.3 in) in 1988, marked on the chart; the median year is 163.1 mm (6.4 in).

Wettest five days (Rx5day) at Dzan by year
Year	Wettest five days (Rx5day)
1966	183.7 mm (7.2 in)
1967	255.6 mm (10.1 in)
1968	163.4 mm (6.4 in)
1969	107.1 mm (4.2 in)
1970	89.9 mm (3.5 in)
1971	94.5 mm (3.7 in)
1972	205.0 mm (8.1 in)
1973	152.9 mm (6.0 in)
1974	224.2 mm (8.8 in)
1975	140.0 mm (5.5 in)
1976	81.8 mm (3.2 in)
1977	175.6 mm (6.9 in)
1978	235.5 mm (9.3 in)
1979	121.0 mm (4.8 in)
1980	112.0 mm (4.4 in)
1981	90.9 mm (3.6 in)
1982	168.4 mm (6.6 in)
1983	162.3 mm (6.4 in)
1984	151.7 mm (6.0 in)
1985	140.2 mm (5.5 in)
1986	91.6 mm (3.6 in)
1987	120.6 mm (4.7 in)
1988	337.5 mm (13.3 in)
1989	192.7 mm (7.6 in)
1990	175.5 mm (6.9 in)
1991	221.9 mm (8.7 in)
1992	307.1 mm (12.1 in)
1993	300.8 mm (11.8 in)
1994	235.9 mm (9.3 in)
1995	203.3 mm (8.0 in)
1996	151.4 mm (6.0 in)
1997	143.7 mm (5.7 in)
1998	162.0 mm (6.4 in)
1999	95.2 mm (3.7 in)
2000	174.3 mm (6.9 in)
2001	133.6 mm (5.3 in)
2002	280.6 mm (11.0 in)
2003	162.7 mm (6.4 in)
2004	146.1 mm (5.8 in)
2005	190.5 mm (7.5 in)
2006	184.7 mm (7.3 in)
2007	215.0 mm (8.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Dzan, 1966 to 2007. The record is 98 days in 1991, marked on the chart; the median year is 41 days.

Longest dry spell (CDD) at Dzan by year
Year	Longest dry spell (CDD)
1966	34 days
1967	46 days
1968	31 days
1969	30 days
1970	33 days
1971	59 days
1972	40 days
1973	75 days
1974	34 days
1975	62 days
1976	44 days
1977	40 days
1978	23 days
1979	45 days
1980	40 days
1981	51 days
1982	27 days
1983	25 days
1984	24 days
1985	56 days
1986	63 days
1987	52 days
1988	59 days
1989	43 days
1990	26 days
1991	98 days
1992	35 days
1993	67 days
1994	36 days
1995	57 days
1996	38 days
1997	27 days
1998	46 days
1999	39 days
2000	41 days
2001	55 days
2002	50 days
2003	71 days
2004	29 days
2005	59 days
2006	33 days
2007	31 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

40 years, 1967 to 2007

A day with at least 87.6 mm (3.4 in) of rain is expected about once in 2 years. A day with at least 191.1 mm (7.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Dzan: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	87.6 mm (3.4 in)
5 years	113.4 mm (4.5 in)
10 years	131.2 mm (5.2 in)
25 years	154.6 mm (6.1 in)
50 years	172.6 mm (6.8 in)	Longer than the 40 years of record
100 years	191.1 mm (7.5 in)	Longer than the 40 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, 40 years of values from 1967 to 2007.

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: 190.0 mm (7.5 in) in 1972; 151.9 mm (6.0 in) in 1988; 149.9 mm (5.9 in) in 1968.

Download the Data

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