El Choy Weather Records (MXN00024018)

Record envelope, standing records and threshold days for El Choy (MXN00024018), Mexico, with 32 years of record.

Key Facts for El Choy

El Choy (MXN00024018) is a weather station in Mexico at 21.97 latitude and -98.87 longitude, 37 m (121 ft) above sea level.
The station reports from 1961 to 1992, 32 years of record.
1,464 records set at El Choy still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
El Choy set a daily record low maximum temperature of 28.9 C (84.0 F) on 4 June 1992.

About the Station

Location: Mexico, 21.97 latitude, -98.87 longitude.
Elevation: 37 m (121 ft).
Period of record: 1961 to 1992, 32 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 Choy. 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 Choy, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	37.2 C (99.0 F)	-0.6 C (30.9 F)	n/a	n/a
Feb	42.2 C (108.0 F)	1.7 C (35.1 F)	n/a	n/a
Mar	45.6 C (114.1 F)	0.0 C (32.0 F)	n/a	n/a
Apr	47.8 C (118.0 F)	4.4 C (39.9 F)	n/a	n/a
May	47.8 C (118.0 F)	12.8 C (55.0 F)	n/a	n/a
Jun	46.7 C (116.1 F)	15.6 C (60.1 F)	n/a	n/a
Jul	40.0 C (104.0 F)	18.9 C (66.0 F)	n/a	n/a
Aug	40.6 C (105.1 F)	18.3 C (64.9 F)	n/a	n/a
Sep	39.4 C (102.9 F)	12.8 C (55.0 F)	n/a	n/a
Oct	38.3 C (100.9 F)	7.8 C (46.0 F)	n/a	n/a
Nov	37.8 C (100.0 F)	2.2 C (36.0 F)	n/a	n/a
Dec	37.8 C (100.0 F)	0.0 C (32.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at El Choy still stand. 1967 holds the most, with 102.

Standing records at El Choy by the year they were set
Year set	Standing records
1961	44
1962	51
1963	45
1964	63
1965	65
1966	75
1967	102
1968	49
1969	61
1970	73
1971	75
1972	50
1973	65
1974	39
1975	40
1976	46
1977	26
1978	28
1979	45
1980	39
1981	31
1982	38
1983	38
1984	41
1985	24
1986	23
1987	35
1988	31
1989	50
1990	28
1991	35
1992	9

All-Time Record Progression

1 new records

1 all-time records were set at El Choy between 2 July 1991 and 2 July 1991. Each dot is a new record.

Wettest Day of Each Month

Jul: 333.8 mm (13.1 in)

The wettest day on record for each calendar month at El Choy. The most was 333.8 mm (13.1 in) on 2 July 1991.

Record daily precipitation for each month at El Choy
Month	Record daily precipitation (mm)	Date
Jan	45.7 mm (1.8 in)	11 January 1981
Feb	41.7 mm (1.6 in)	13 February 1981
Mar	120.4 mm (4.7 in)	27 March 1992
Apr	93.5 mm (3.7 in)	8 April 1985
May	145.3 mm (5.7 in)	1 May 1981
Jun	147.3 mm (5.8 in)	19 June 1974
Jul	333.8 mm (13.1 in)	2 July 1991
Aug	261.1 mm (10.3 in)	7 August 1990
Sep	264.7 mm (10.4 in)	2 September 1977
Oct	190.0 mm (7.5 in)	10 October 1966
Nov	132.8 mm (5.2 in)	11 November 1967
Dec	85.3 mm (3.4 in)	3 December 1979

Period of Record Coverage

1961 to 1992

32 years of record at El Choy, 1961 to 1992. 3 years have data for under 90 percent of days and are left out of rankings: 1988, 1991, 1992.

Days with data per year at El Choy
Year	Days with data	Share of year	Complete
1961	363	99%	Yes
1962	358	98%	Yes
1963	362	99%	Yes
1964	366	100%	Yes
1965	364	100%	Yes
1966	359	98%	Yes
1967	364	100%	Yes
1968	361	99%	Yes
1969	358	98%	Yes
1970	363	99%	Yes
1971	364	100%	Yes
1972	363	99%	Yes
1973	363	99%	Yes
1974	365	100%	Yes
1975	359	98%	Yes
1976	362	99%	Yes
1977	361	99%	Yes
1978	357	98%	Yes
1979	361	99%	Yes
1980	358	98%	Yes
1981	363	99%	Yes
1982	361	99%	Yes
1983	361	99%	Yes
1984	361	99%	Yes
1985	364	100%	Yes
1986	361	99%	Yes
1987	361	99%	Yes
1988	320	87%	No
1989	358	98%	Yes
1990	358	98%	Yes
1991	309	85%	No
1992	134	37%	No

Latest Records

Latest records at El Choy
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
4 June 1992	El Choy, MX	daily low max	28.9 C (84.0 F)	1.1 C (2.0 F)	28 years	14 of 100 (Routine)
30 May 1992	El Choy, MX	daily rain	24.9 mm (1.0 in)	10.2 mm (0.4 in)	20 years	14 of 100 (Routine)
28 May 1992	El Choy, MX	daily low min (Tie)	20.6 C (69.1 F)	tie	23 years	2 of 100 (Routine)
20 May 1992	El Choy, MX	daily rain	25.4 mm (1.0 in)	20.6 mm (0.8 in)	2 years	13 of 100 (Routine)
8 May 1992	El Choy, MX	daily low max (Tie)	30.0 C (86.0 F)	tie	29 years	2 of 100 (Routine)
7 May 1992	El Choy, MX	daily rain	22.6 mm (0.9 in)	18.3 mm (0.7 in)	10 years	15 of 100 (Routine)
28 April 1992	El Choy, MX	daily low max	22.8 C (73.0 F)	0.5 C (0.9 F)	27 years	12 of 100 (Routine)
27 April 1992	El Choy, MX	daily rain	60.5 mm (2.4 in)	49.1 mm (1.9 in)	27 years	42 of 100 (Notable)
22 April 1992	El Choy, MX	daily low min (Tie)	15.6 C (60.1 F)	tie	27 years	2 of 100 (Routine)
21 April 1992	El Choy, MX	daily low min	12.8 C (55.0 F)	2.2 C (4.0 F)	22 years	15 of 100 (Routine)
15 April 1992	El Choy, MX	daily low max (Tie)	26.7 C (80.1 F)	tie	18 years	2 of 100 (Routine)
3 April 1992	El Choy, MX	daily rain	5.6 mm (0.22 in)	3.3 mm (0.13 in)	2 years	5 of 100 (Routine)
27 March 1992	El Choy, MX	monthly rain	120.4 mm (4.7 in)	39.1 mm (1.5 in)	25 years	58 of 100 (Notable)
20 March 1992	El Choy, MX	daily rain (Tie)	1.3 mm (0.05 in)	tie	23 years	2 of 100 (Routine)
16 March 1992	El Choy, MX	daily rain (Tie)	1.3 mm (0.05 in)	tie	13 years	1 of 100 (Routine)
13 March 1992	El Choy, MX	daily rain	3.6 mm (0.14 in)	0.6 mm (0.02 in)	16 years	7 of 100 (Routine)
14 February 1992	El Choy, MX	daily high min	19.4 C (66.9 F)	1.1 C (2.0 F)	2 years	5 of 100 (Routine)
12 February 1992	El Choy, MX	daily high min (Tie)	17.8 C (64.0 F)	tie	20 years	2 of 100 (Routine)
30 January 1992	El Choy, MX	daily low max	15.0 C (59.0 F)	3.3 C (5.9 F)	20 years	15 of 100 (Routine)
29 January 1992	El Choy, MX	daily rain	31.0 mm (1.2 in)	30.7 mm (1.2 in)	13 years	47 of 100 (Notable)

Climate Trend

29 complete years, 1961 to 1990

One stripe for each of 29 complete years at El Choy, 1961 to 1990. Blue stripes are years cooler than the station's own mean of 24.8 C (76.6 F); red stripes are warmer. The coolest year was 1961, at 23.7 C (74.6 F), and the warmest was 1971, at 26.5 C (79.7 F). The strongest colour marks a difference of 1.8 C (3.2 F).

Annual mean temperature at El Choy as warming stripes, 1961 to 1990
Year	Annual mean temperature	Difference from the station mean
1961	23.7 C	-1.09 C
1962	24.4 C	-0.35 C
1963	23.8 C	-1.00 C
1964	24.0 C	-0.79 C
1965	24.4 C	-0.41 C
1966	25.2 C	+0.42 C
1967	26.0 C	+1.25 C
1968	25.5 C	+0.75 C
1969	26.1 C	+1.33 C
1970	25.2 C	+0.45 C
1971	26.5 C	+1.71 C
1972	26.2 C	+1.46 C
1973	25.7 C	+0.93 C
1974	25.6 C	+0.86 C
1975	25.9 C	+1.12 C
1976	23.9 C	-0.89 C
1977	24.1 C	-0.64 C
1978	24.2 C	-0.55 C
1979	23.8 C	-1.01 C
1980	24.5 C	-0.33 C
1981	24.0 C	-0.83 C
1982	25.1 C	+0.30 C
1983	24.7 C	-0.11 C
1984	24.1 C	-0.67 C
1985	23.8 C	-0.94 C
1986	24.3 C	-0.50 C
1987	23.9 C	-0.92 C
1989	25.1 C	+0.30 C
1990	24.9 C	+0.15 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

1961 to 1992

Yearly extremes at El Choy: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	47.8 C (118.0 F)	1971	42.8 C (109.0 F)	32
Coldest night (TNn)	-0.6 C (30.9 F)	1975	2.8 C (37.0 F)	32
Wettest day (Rx1day)	333.8 mm (13.1 in)	1991	116.5 mm (4.6 in)	32
Wettest five days (Rx5day)	591.9 mm (23.3 in)	1991	221.5 mm (8.7 in)	32
Longest dry spell (CDD)	74 days	1971	35 days	32

Hottest day (TXx)

The hottest day of the year at El Choy, 1961 to 1992. The record is 47.8 C (118.0 F) in 1971, marked on the chart; the median year is 42.8 C (109.0 F).

Hottest day (TXx) at El Choy by year
Year	Hottest day (TXx)
1961	42.2 C (108.0 F)
1962	40.6 C (105.1 F)
1963	40.6 C (105.1 F)
1964	43.9 C (111.0 F)
1965	45.0 C (113.0 F)
1966	46.1 C (115.0 F)
1967	45.0 C (113.0 F)
1968	40.0 C (104.0 F)
1969	45.0 C (113.0 F)
1970	41.7 C (107.1 F)
1971	47.8 C (118.0 F)
1972	44.4 C (111.9 F)
1973	47.8 C (118.0 F)
1974	46.7 C (116.1 F)
1975	45.6 C (114.1 F)
1976	40.6 C (105.1 F)
1977	41.7 C (107.1 F)
1978	45.0 C (113.0 F)
1979	42.8 C (109.0 F)
1980	42.2 C (108.0 F)
1981	37.8 C (100.0 F)
1982	41.7 C (107.1 F)
1983	45.0 C (113.0 F)
1984	47.8 C (118.0 F)
1985	38.9 C (102.0 F)
1986	40.6 C (105.1 F)
1987	41.1 C (106.0 F)
1988	42.8 C (109.0 F)
1989	42.8 C (109.0 F)
1990	41.1 C (106.0 F)
1991	46.7 C (116.1 F)
1992	37.8 C (100.0 F)

Coldest night (TNn)

The coldest night of the year at El Choy, 1961 to 1992. The record is -0.6 C (30.9 F) in 1975, marked on the chart; the median year is 2.8 C (37.0 F).

Coldest night (TNn) at El Choy by year
Year	Coldest night (TNn)
1961	5.6 C (42.1 F)
1962	0.0 C (32.0 F)
1963	0.0 C (32.0 F)
1964	0.0 C (32.0 F)
1965	0.0 C (32.0 F)
1966	0.6 C (33.1 F)
1967	2.8 C (37.0 F)
1968	2.8 C (37.0 F)
1969	5.6 C (42.1 F)
1970	3.3 C (37.9 F)
1971	0.0 C (32.0 F)
1972	6.1 C (43.0 F)
1973	0.6 C (33.1 F)
1974	3.3 C (37.9 F)
1975	-0.6 C (30.9 F)
1976	1.7 C (35.1 F)
1977	2.8 C (37.0 F)
1978	5.6 C (42.1 F)
1979	4.4 C (39.9 F)
1980	5.6 C (42.1 F)
1981	5.6 C (42.1 F)
1982	1.7 C (35.1 F)
1983	0.0 C (32.0 F)
1984	5.0 C (41.0 F)
1985	2.8 C (37.0 F)
1986	1.7 C (35.1 F)
1987	1.7 C (35.1 F)
1988	1.7 C (35.1 F)
1989	0.0 C (32.0 F)
1990	3.9 C (39.0 F)
1991	6.1 C (43.0 F)
1992	6.7 C (44.1 F)

Wettest day (Rx1day)

The wettest day of the year at El Choy, 1961 to 1992. The record is 333.8 mm (13.1 in) in 1991, marked on the chart; the median year is 116.5 mm (4.6 in).

Wettest day (Rx1day) at El Choy by year
Year	Wettest day (Rx1day)
1961	109.7 mm (4.3 in)
1962	64.5 mm (2.5 in)
1963	115.6 mm (4.6 in)
1964	101.1 mm (4.0 in)
1965	66.0 mm (2.6 in)
1966	190.0 mm (7.5 in)
1967	132.8 mm (5.2 in)
1968	64.3 mm (2.5 in)
1969	65.3 mm (2.6 in)
1970	143.8 mm (5.7 in)
1971	130.3 mm (5.1 in)
1972	127.5 mm (5.0 in)
1973	129.3 mm (5.1 in)
1974	147.3 mm (5.8 in)
1975	98.6 mm (3.9 in)
1976	194.8 mm (7.7 in)
1977	264.7 mm (10.4 in)
1978	116.3 mm (4.6 in)
1979	85.3 mm (3.4 in)
1980	52.3 mm (2.1 in)
1981	145.3 mm (5.7 in)
1982	59.7 mm (2.4 in)
1983	83.6 mm (3.3 in)
1984	63.5 mm (2.5 in)
1985	99.1 mm (3.9 in)
1986	116.6 mm (4.6 in)
1987	104.4 mm (4.1 in)
1988	160.3 mm (6.3 in)
1989	154.9 mm (6.1 in)
1990	261.1 mm (10.3 in)
1991	333.8 mm (13.1 in)
1992	120.4 mm (4.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at El Choy, 1961 to 1992. The record is 591.9 mm (23.3 in) in 1991, marked on the chart; the median year is 221.5 mm (8.7 in).

Wettest five days (Rx5day) at El Choy by year
Year	Wettest five days (Rx5day)
1961	321.8 mm (12.7 in)
1962	130.6 mm (5.1 in)
1963	245.7 mm (9.7 in)
1964	186.5 mm (7.3 in)
1965	152.4 mm (6.0 in)
1966	319.1 mm (12.6 in)
1967	354.7 mm (14.0 in)
1968	94.5 mm (3.7 in)
1969	209.8 mm (8.3 in)
1970	258.9 mm (10.2 in)
1971	169.5 mm (6.7 in)
1972	168.5 mm (6.6 in)
1973	258.4 mm (10.2 in)
1974	366.9 mm (14.4 in)
1975	234.5 mm (9.2 in)
1976	486.8 mm (19.2 in)
1977	314.8 mm (12.4 in)
1978	269.5 mm (10.6 in)
1979	131.6 mm (5.2 in)
1980	108.9 mm (4.3 in)
1981	202.2 mm (8.0 in)
1982	98.0 mm (3.9 in)
1983	245.2 mm (9.7 in)
1984	154.7 mm (6.1 in)
1985	191.3 mm (7.5 in)
1986	181.6 mm (7.1 in)
1987	226.1 mm (8.9 in)
1988	271.7 mm (10.7 in)
1989	216.9 mm (8.5 in)
1990	325.1 mm (12.8 in)
1991	591.9 mm (23.3 in)
1992	140.8 mm (5.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at El Choy, 1961 to 1992. The record is 74 days in 1971, marked on the chart; the median year is 35 days.

Longest dry spell (CDD) at El Choy by year
Year	Longest dry spell (CDD)
1961	46 days
1962	68 days
1963	46 days
1964	56 days
1965	36 days
1966	42 days
1967	31 days
1968	32 days
1969	27 days
1970	54 days
1971	74 days
1972	28 days
1973	37 days
1974	25 days
1975	37 days
1976	28 days
1977	40 days
1978	28 days
1979	30 days
1980	25 days
1981	33 days
1982	36 days
1983	64 days
1984	44 days
1985	23 days
1986	36 days
1987	24 days
1988	33 days
1989	48 days
1990	25 days
1991	28 days
1992	9 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, 1961 to 1990

A day with at least 110.8 mm (4.4 in) of rain is expected about once in 2 years. A day with at least 307.7 mm (12.1 in) of rain is expected about once in 100 years.

Rainfall return levels at El Choy: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	110.8 mm (4.4 in)
5 years	158.7 mm (6.2 in)
10 years	192.3 mm (7.6 in)
25 years	236.9 mm (9.3 in)
50 years	271.7 mm (10.7 in)	Longer than the 30 years of record
100 years	307.7 mm (12.1 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 1961 to 1990.

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: 264.7 mm (10.4 in) in 1977; 261.1 mm (10.3 in) in 1990; 194.8 mm (7.7 in) in 1976.

Download the Data

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