El Zapote Weather Records (MXN00016047)

Record envelope, standing records and threshold days for El Zapote (MXN00016047), Mexico, with 62 years of record.

Key Facts for El Zapote

El Zapote (MXN00016047) is a weather station in Mexico at 18.90 latitude and -101.72 longitude, 520 m (1,706 ft) above sea level.
The station reports from 1951 to 2012, 62 years of record.
1,464 records set at El Zapote still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
El Zapote tied a daily record low minimum temperature of 20.0 C (68.0 F) on 22 August 2012.

About the Station

Location: Mexico, 18.90 latitude, -101.72 longitude.
Elevation: 520 m (1,706 ft).
Period of record: 1951 to 2012, 62 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 El Zapote. 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 El Zapote, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	40.0 C (104.0 F)	7.8 C (46.0 F)	n/a	n/a
Feb	41.1 C (106.0 F)	10.0 C (50.0 F)	n/a	n/a
Mar	45.0 C (113.0 F)	8.9 C (48.0 F)	n/a	n/a
Apr	45.0 C (113.0 F)	11.7 C (53.1 F)	n/a	n/a
May	45.0 C (113.0 F)	13.9 C (57.0 F)	n/a	n/a
Jun	45.0 C (113.0 F)	17.2 C (63.0 F)	n/a	n/a
Jul	46.7 C (116.1 F)	18.9 C (66.0 F)	n/a	n/a
Aug	46.1 C (115.0 F)	17.8 C (64.0 F)	n/a	n/a
Sep	48.3 C (118.9 F)	17.8 C (64.0 F)	n/a	n/a
Oct	45.0 C (113.0 F)	13.9 C (57.0 F)	n/a	n/a
Nov	45.0 C (113.0 F)	11.7 C (53.1 F)	n/a	n/a
Dec	40.0 C (104.0 F)	10.6 C (51.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at El Zapote still stand. 2000 holds the most, with 254.

Standing records at El Zapote by the year they were set
Year set	Standing records
1951	7
1952	19
1953	16
1954	13
1955	15
1956	21
1957	15
1958	14
1959	14
1960	12
1961	7
1962	29
1963	20
1964	57
1965	146
1966	43
1967	44
1968	51
1969	12
1970	6
1971	7
1972	4
1973	8
1974	16
1975	9
1976	14
1977	8
1978	8
1979	11
1980	6
1981	9
1982	9
1983	11
1984	12
1985	5
1986	5
1995	6
1996	5
1997	13
1998	32
1999	110
2000	254
2001	61
2004	37
2005	3
2006	4
2007	35
2008	3
2009	38
2010	62
2011	66
2012	32

All-Time Record Progression

5 new records

5 all-time records were set at El Zapote between 26 May 1983 and 21 January 2011. Each dot is a new record.

When El Zapote set new all-time records
Date	Kind	Detail
1983-05-26	Record daily precipitation	Record daily precipitation 133.4 mm (5.3 in)
1999-10-01	Record high minimum temperature	Record high minimum temperature 30.6 C (87.1 F)
2000-10-09	Record high minimum temperature	Record high minimum temperature 31.1 C (88.0 F)
2011-01-20	Record low minimum temperature	Record low minimum temperature 9.4 C (48.9 F)
2011-01-21	Record low minimum temperature	Record low minimum temperature 7.8 C (46.0 F)

Wettest Day of Each Month

May: 133.4 mm (5.3 in)

The wettest day on record for each calendar month at El Zapote. The most was 133.4 mm (5.3 in) on 26 May 1983.

Record daily precipitation for each month at El Zapote
Month	Record daily precipitation (mm)	Date
Jan	61.0 mm (2.4 in)	24 January 1980
Feb	79.8 mm (3.1 in)	3 February 2010
Mar	38.4 mm (1.5 in)	5 March 1968
Apr	33.0 mm (1.3 in)	5 April 1973
May	133.4 mm (5.3 in)	26 May 1983
Jun	71.9 mm (2.8 in)	24 June 1986
Jul	80.8 mm (3.2 in)	1 July 1984
Aug	98.3 mm (3.9 in)	8 August 1978
Sep	78.0 mm (3.1 in)	4 September 1998
Oct	110.0 mm (4.3 in)	23 October 1968
Nov	70.4 mm (2.8 in)	4 November 1962
Dec	23.6 mm (0.9 in)	27 December 1974

Period of Record Coverage

1951 to 2012

52 years of record at El Zapote, 1951 to 2012. 10 years have data for under 90 percent of days and are left out of rankings: 1951, 1952, 1953, 1971, 1995, 1996, 1999, 2000 and others.

Days with data per year at El Zapote
Year	Days with data	Share of year	Complete
1951	31	8%	No
1952	184	50%	No
1953	292	80%	No
1954	363	99%	Yes
1955	334	92%	Yes
1956	360	98%	Yes
1957	365	100%	Yes
1958	364	100%	Yes
1959	363	99%	Yes
1960	366	100%	Yes
1961	365	100%	Yes
1962	364	100%	Yes
1963	365	100%	Yes
1964	336	92%	Yes
1965	334	92%	Yes
1966	338	93%	Yes
1967	365	100%	Yes
1968	364	99%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	273	75%	No
1972	366	100%	Yes
1973	335	92%	Yes
1974	335	92%	Yes
1975	334	92%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	364	100%	Yes
1982	365	100%	Yes
1983	364	100%	Yes
1984	365	100%	Yes
1985	365	100%	Yes
1986	364	100%	Yes
1995	211	58%	No
1996	305	83%	No
1997	333	91%	Yes
1998	335	92%	Yes
1999	228	62%	No
2000	241	66%	No
2001	54	15%	No
2004	366	100%	Yes
2005	365	100%	Yes
2006	364	100%	Yes
2007	365	100%	Yes
2008	366	100%	Yes
2009	364	100%	Yes
2010	365	100%	Yes
2011	365	100%	Yes
2012	243	66%	No

Latest Records

Latest records at El Zapote
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
22 August 2012	El Zapote, MX	daily low min (Tie)	20.0 C (68.0 F)	tie	37 years	4 of 100 (Routine)
13 August 2012	El Zapote, MX	daily rain	31.0 mm (1.2 in)	6.1 mm (0.24 in)	34 years	21 of 100 (Routine)
5 July 2012	El Zapote, MX	daily low min (Tie)	20.6 C (69.1 F)	tie	30 years	3 of 100 (Routine)
3 July 2012	El Zapote, MX	daily low min (Tie)	20.6 C (69.1 F)	tie	35 years	4 of 100 (Routine)
28 June 2012	El Zapote, MX	daily high max	40.6 C (105.1 F)	0.6 C (1.1 F)	43 years	19 of 100 (Routine)
27 June 2012	El Zapote, MX	daily high max	40.6 C (105.1 F)	0.6 C (1.1 F)	2 years	7 of 100 (Routine)
26 June 2012	El Zapote, MX	daily high max (Tie)	40.6 C (105.1 F)	tie	43 years	4 of 100 (Routine)
14 June 2012	El Zapote, MX	daily high max (Tie)	41.7 C (107.1 F)	tie	3 years	1 of 100 (Routine)
7 June 2012	El Zapote, MX	daily high max	41.7 C (107.1 F)	0.6 C (1.1 F)	49 years	21 of 100 (Routine)
26 May 2012	El Zapote, MX	daily low min (Tie)	20.6 C (69.1 F)	tie	38 years	4 of 100 (Routine)
16 May 2012	El Zapote, MX	daily rain	39.9 mm (1.6 in)	38.6 mm (1.5 in)	56 years	45 of 100 (Notable)
15 May 2012	El Zapote, MX	daily low min	16.7 C (62.1 F)	2.2 C (4.0 F)	1 year	15 of 100 (Routine)
14 May 2012	El Zapote, MX	daily low min	15.6 C (60.1 F)	3.8 C (6.8 F)	1 year	22 of 100 (Routine)
13 May 2012	El Zapote, MX	daily low min	16.7 C (62.1 F)	2.2 C (4.0 F)	1 year	15 of 100 (Routine)
12 May 2012	El Zapote, MX	daily low min	17.2 C (63.0 F)	1.7 C (3.1 F)	1 year	13 of 100 (Routine)
11 May 2012	El Zapote, MX	daily low min	16.7 C (62.1 F)	3.3 C (5.9 F)	50 years	35 of 100 (Notable)
10 May 2012	El Zapote, MX	daily low min	15.6 C (60.1 F)	0.5 C (0.9 F)	33 years	17 of 100 (Routine)
9 May 2012	El Zapote, MX	daily low min (Tie)	16.7 C (62.1 F)	tie	33 years	3 of 100 (Routine)
8 May 2012	El Zapote, MX	daily low min	16.1 C (61.0 F)	0.6 C (1.1 F)	33 years	17 of 100 (Routine)
7 May 2012	El Zapote, MX	daily low min	16.7 C (62.1 F)	1.1 C (2.0 F)	31 years	19 of 100 (Routine)

Climate Trend

32 complete years, 1954 to 2011

One stripe for each of 32 complete years at El Zapote, 1954 to 2011. Blue stripes are years cooler than the station's own mean of 28.2 C (82.8 F); red stripes are warmer. The coolest year was 1983, at 27.2 C (81.0 F), and the warmest was 2009, at 29.2 C (84.6 F). The strongest colour marks a difference of 1.1 C (2.0 F).

Annual mean temperature at El Zapote as warming stripes, 1954 to 2011
Year	Annual mean temperature	Difference from the station mean
1954	28.1 C	-0.17 C
1956	27.6 C	-0.68 C
1957	29.0 C	+0.78 C
1958	28.3 C	+0.03 C
1959	28.9 C	+0.62 C
1961	29.2 C	+0.94 C
1962	28.4 C	+0.18 C
1963	29.1 C	+0.81 C
1967	27.4 C	-0.85 C
1968	27.6 C	-0.60 C
1969	28.9 C	+0.63 C
1970	28.5 C	+0.23 C
1972	28.7 C	+0.43 C
1976	27.4 C	-0.80 C
1977	27.7 C	-0.55 C
1978	28.0 C	-0.28 C
1979	28.5 C	+0.30 C
1980	28.3 C	+0.04 C
1981	27.6 C	-0.61 C
1982	28.6 C	+0.31 C
1983	27.2 C	-1.01 C
1984	27.5 C	-0.77 C
1985	27.9 C	-0.37 C
1986	28.0 C	-0.29 C
2004	28.3 C	+0.05 C
2005	29.0 C	+0.72 C
2006	28.6 C	+0.37 C
2007	28.3 C	+0.09 C
2008	28.5 C	+0.24 C
2009	29.2 C	+0.99 C
2010	27.6 C	-0.60 C
2011	28.1 C	-0.18 C

The fitted trend in annual mean temperature here over 1954 to 2011 is 0.00 C (-0.12 to 0.12) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.00 F (-0.21 to 0.21) per decade. The slope is a straight line fitted to 32 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at El Zapote
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.00 C (-0.12 to 0.12) per decade	0.00 F (-0.21 to 0.21) per decade	1954 to 2011	32	Not clearly different from zero
Mean daily maximum	0.2 C (-0.1 to 0.4) per decade	0.3 F (-0.2 to 0.7) per decade	1954 to 2011	32	Not clearly different from zero
Mean daily minimum	-0.17 C (-0.36 to 0.03) per decade	-0.30 F (-0.64 to 0.05) per decade	1954 to 2011	32	Not clearly different from zero

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

1951 to 2012

Yearly extremes at El Zapote: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	48.3 C (118.9 F)	1965	41.7 C (107.1 F)	52
Coldest night (TNn)	7.8 C (46.0 F)	2011	13.9 C (57.0 F)	52
Wettest day (Rx1day)	133.4 mm (5.3 in)	1983	51.7 mm (2.0 in)	52
Wettest five days (Rx5day)	173.8 mm (6.8 in)	1976	85.9 mm (3.4 in)	52
Longest dry spell (CDD)	166 days	1969	104 days	52

Hottest day (TXx)

The hottest day of the year at El Zapote, 1951 to 2012. The record is 48.3 C (118.9 F) in 1965, marked on the chart; the median year is 41.7 C (107.1 F).

Hottest day (TXx) at El Zapote by year
Year	Hottest day (TXx)
1951	41.7 C (107.1 F)
1952	38.9 C (102.0 F)
1953	45.0 C (113.0 F)
1954	45.0 C (113.0 F)
1955	41.7 C (107.1 F)
1956	41.1 C (106.0 F)
1957	42.8 C (109.0 F)
1958	42.8 C (109.0 F)
1959	43.9 C (111.0 F)
1960	44.4 C (111.9 F)
1961	42.8 C (109.0 F)
1962	40.6 C (105.1 F)
1963	42.8 C (109.0 F)
1964	45.0 C (113.0 F)
1965	48.3 C (118.9 F)
1966	43.9 C (111.0 F)
1967	38.9 C (102.0 F)
1968	38.9 C (102.0 F)
1969	43.9 C (111.0 F)
1970	42.2 C (108.0 F)
1971	41.7 C (107.1 F)
1972	42.8 C (109.0 F)
1973	42.2 C (108.0 F)
1974	40.6 C (105.1 F)
1975	41.7 C (107.1 F)
1976	41.1 C (106.0 F)
1977	40.6 C (105.1 F)
1978	41.1 C (106.0 F)
1979	41.7 C (107.1 F)
1980	42.8 C (109.0 F)
1981	41.1 C (106.0 F)
1982	41.7 C (107.1 F)
1983	41.7 C (107.1 F)
1984	40.6 C (105.1 F)
1985	41.1 C (106.0 F)
1986	41.7 C (107.1 F)
1995	41.7 C (107.1 F)
1996	41.1 C (106.0 F)
1997	42.2 C (108.0 F)
1998	44.4 C (111.9 F)
1999	40.0 C (104.0 F)
2000	31.7 C (89.1 F)
2001	28.9 C (84.0 F)
2004	40.0 C (104.0 F)
2005	42.8 C (109.0 F)
2006	41.7 C (107.1 F)
2007	42.8 C (109.0 F)
2008	41.7 C (107.1 F)
2009	42.8 C (109.0 F)
2010	42.2 C (108.0 F)
2011	43.3 C (109.9 F)
2012	42.2 C (108.0 F)

Coldest night (TNn)

The coldest night of the year at El Zapote, 1951 to 2012. The record is 7.8 C (46.0 F) in 2011, marked on the chart; the median year is 13.9 C (57.0 F).

Coldest night (TNn) at El Zapote by year
Year	Coldest night (TNn)
1951	11.1 C (52.0 F)
1952	11.7 C (53.1 F)
1953	10.6 C (51.1 F)
1954	10.6 C (51.1 F)
1955	11.1 C (52.0 F)
1956	10.0 C (50.0 F)
1957	12.2 C (54.0 F)
1958	13.9 C (57.0 F)
1959	15.0 C (59.0 F)
1960	11.7 C (53.1 F)
1961	16.1 C (61.0 F)
1962	15.0 C (59.0 F)
1963	11.7 C (53.1 F)
1964	15.0 C (59.0 F)
1965	13.9 C (57.0 F)
1966	14.4 C (57.9 F)
1967	10.6 C (51.1 F)
1968	16.7 C (62.1 F)
1969	14.4 C (57.9 F)
1970	15.0 C (59.0 F)
1971	13.3 C (55.9 F)
1972	15.0 C (59.0 F)
1973	14.4 C (57.9 F)
1974	15.6 C (60.1 F)
1975	11.7 C (53.1 F)
1976	11.7 C (53.1 F)
1977	14.4 C (57.9 F)
1978	16.1 C (61.0 F)
1979	15.0 C (59.0 F)
1980	13.9 C (57.0 F)
1981	13.9 C (57.0 F)
1982	13.9 C (57.0 F)
1983	12.2 C (54.0 F)
1984	15.0 C (59.0 F)
1985	14.4 C (57.9 F)
1986	12.2 C (54.0 F)
1995	16.1 C (61.0 F)
1996	12.8 C (55.0 F)
1997	10.0 C (50.0 F)
1998	12.8 C (55.0 F)
1999	11.1 C (52.0 F)
2000	13.3 C (55.9 F)
2001	22.8 C (73.0 F)
2004	12.8 C (55.0 F)
2005	15.0 C (59.0 F)
2006	13.9 C (57.0 F)
2007	16.7 C (62.1 F)
2008	16.7 C (62.1 F)
2009	10.6 C (51.1 F)
2010	10.6 C (51.1 F)
2011	7.8 C (46.0 F)
2012	10.0 C (50.0 F)

Wettest day (Rx1day)

The wettest day of the year at El Zapote, 1951 to 2012. The record is 133.4 mm (5.3 in) in 1983, marked on the chart; the median year is 51.7 mm (2.0 in).

Wettest day (Rx1day) at El Zapote by year
Year	Wettest day (Rx1day)
1951	0.8 mm (0.03 in)
1952	47.5 mm (1.9 in)
1953	35.8 mm (1.4 in)
1954	58.7 mm (2.3 in)
1955	61.0 mm (2.4 in)
1956	48.8 mm (1.9 in)
1957	34.3 mm (1.4 in)
1958	51.3 mm (2.0 in)
1959	37.6 mm (1.5 in)
1960	33.8 mm (1.3 in)
1961	23.9 mm (0.9 in)
1962	70.4 mm (2.8 in)
1963	45.5 mm (1.8 in)
1964	42.9 mm (1.7 in)
1965	52.8 mm (2.1 in)
1966	59.9 mm (2.4 in)
1967	61.7 mm (2.4 in)
1968	110.0 mm (4.3 in)
1969	48.0 mm (1.9 in)
1970	64.3 mm (2.5 in)
1971	36.3 mm (1.4 in)
1972	50.8 mm (2.0 in)
1973	52.1 mm (2.1 in)
1974	31.0 mm (1.2 in)
1975	40.4 mm (1.6 in)
1976	97.8 mm (3.9 in)
1977	57.2 mm (2.3 in)
1978	98.3 mm (3.9 in)
1979	58.9 mm (2.3 in)
1980	61.0 mm (2.4 in)
1981	59.4 mm (2.3 in)
1982	72.9 mm (2.9 in)
1983	133.4 mm (5.3 in)
1984	80.8 mm (3.2 in)
1985	88.9 mm (3.5 in)
1986	71.9 mm (2.8 in)
1995	77.0 mm (3.0 in)
1996	64.8 mm (2.6 in)
1997	79.8 mm (3.1 in)
1998	78.0 mm (3.1 in)
1999	19.8 mm (0.8 in)
2000	36.8 mm (1.4 in)
2001	0.0 mm (0.00 in)
2004	46.0 mm (1.8 in)
2005	35.8 mm (1.4 in)
2006	45.0 mm (1.8 in)
2007	25.9 mm (1.0 in)
2008	20.8 mm (0.8 in)
2009	59.9 mm (2.4 in)
2010	79.8 mm (3.1 in)
2011	39.9 mm (1.6 in)
2012	39.9 mm (1.6 in)

Wettest five days (Rx5day)

The wettest five days of the year at El Zapote, 1951 to 2012. The record is 173.8 mm (6.8 in) in 1976, marked on the chart; the median year is 85.9 mm (3.4 in).

Wettest five days (Rx5day) at El Zapote by year
Year	Wettest five days (Rx5day)
1951	1.3 mm (0.05 in)
1952	63.8 mm (2.5 in)
1953	55.4 mm (2.2 in)
1954	100.7 mm (4.0 in)
1955	116.9 mm (4.6 in)
1956	65.4 mm (2.6 in)
1957	72.4 mm (2.9 in)
1958	114.8 mm (4.5 in)
1959	88.2 mm (3.5 in)
1960	83.6 mm (3.3 in)
1961	61.6 mm (2.4 in)
1962	82.1 mm (3.2 in)
1963	63.4 mm (2.5 in)
1964	55.9 mm (2.2 in)
1965	58.7 mm (2.3 in)
1966	90.6 mm (3.6 in)
1967	117.6 mm (4.6 in)
1968	122.7 mm (4.8 in)
1969	77.3 mm (3.0 in)
1970	97.0 mm (3.8 in)
1971	68.9 mm (2.7 in)
1972	123.0 mm (4.8 in)
1973	98.1 mm (3.9 in)
1974	38.7 mm (1.5 in)
1975	55.9 mm (2.2 in)
1976	173.8 mm (6.8 in)
1977	108.0 mm (4.3 in)
1978	110.5 mm (4.4 in)
1979	84.3 mm (3.3 in)
1980	123.2 mm (4.9 in)
1981	89.7 mm (3.5 in)
1982	75.5 mm (3.0 in)
1983	150.7 mm (5.9 in)
1984	150.2 mm (5.9 in)
1985	129.3 mm (5.1 in)
1986	130.3 mm (5.1 in)
1995	97.3 mm (3.8 in)
1996	129.1 mm (5.1 in)
1997	112.8 mm (4.4 in)
1998	161.8 mm (6.4 in)
1999	21.6 mm (0.9 in)
2000	36.8 mm (1.4 in)
2001	1.8 mm (0.07 in)
2004	82.6 mm (3.3 in)
2005	49.8 mm (2.0 in)
2006	83.2 mm (3.3 in)
2007	68.4 mm (2.7 in)
2008	35.8 mm (1.4 in)
2009	87.6 mm (3.4 in)
2010	119.2 mm (4.7 in)
2011	108.8 mm (4.3 in)
2012	65.5 mm (2.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at El Zapote, 1951 to 2012. The record is 166 days in 1969, marked on the chart; the median year is 104 days.

Longest dry spell (CDD) at El Zapote by year
Year	Longest dry spell (CDD)
1951	31 days
1952	47 days
1953	90 days
1954	101 days
1955	148 days
1956	96 days
1957	127 days
1958	103 days
1959	102 days
1960	147 days
1961	118 days
1962	72 days
1963	128 days
1964	102 days
1965	104 days
1966	86 days
1967	128 days
1968	75 days
1969	166 days
1970	151 days
1971	62 days
1972	145 days
1973	93 days
1974	146 days
1975	99 days
1976	94 days
1977	86 days
1978	75 days
1979	116 days
1980	123 days
1981	88 days
1982	136 days
1983	73 days
1984	146 days
1985	70 days
1986	137 days
1995	121 days
1996	141 days
1997	59 days
1998	90 days
1999	120 days
2000	157 days
2001	59 days
2004	152 days
2005	93 days
2006	145 days
2007	155 days
2008	159 days
2009	136 days
2010	112 days
2011	100 days
2012	94 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

43 years, 1954 to 2011

A day with at least 54.3 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 134.0 mm (5.3 in) of rain is expected about once in 100 years.

Rainfall return levels at El Zapote: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	54.3 mm (2.1 in)
5 years	75.7 mm (3.0 in)
10 years	89.8 mm (3.5 in)
25 years	107.6 mm (4.2 in)
50 years	120.9 mm (4.8 in)	Longer than the 43 years of record
100 years	134.0 mm (5.3 in)	Longer than the 43 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, 43 years of values from 1954 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: 133.4 mm (5.3 in) in 1983; 110.0 mm (4.3 in) in 1968; 98.3 mm (3.9 in) in 1978.

Download the Data

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