Jalcocotan Weather Records (MXN00018017)

Record envelope, standing records and threshold days for Jalcocotan (MXN00018017), Mexico, with 33 years of record.

Key Facts for Jalcocotan

Jalcocotan (MXN00018017) is a weather station in Mexico at 21.47 latitude and -105.10 longitude, 428 m (1,404 ft) above sea level.
The station reports from 1962 to 1994, 33 years of record.
1,464 records set at Jalcocotan still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Mexico, 21.47 latitude, -105.10 longitude.
Elevation: 428 m (1,404 ft).
Period of record: 1962 to 1994, 33 years.
Eligible elements: none yet.

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 Jalcocotan. 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 Jalcocotan, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	33.3 C (91.9 F)	5.0 C (41.0 F)	n/a	n/a
Feb	35.0 C (95.0 F)	3.9 C (39.0 F)	n/a	n/a
Mar	36.1 C (97.0 F)	3.9 C (39.0 F)	n/a	n/a
Apr	37.8 C (100.0 F)	5.6 C (42.1 F)	n/a	n/a
May	37.2 C (99.0 F)	5.0 C (41.0 F)	n/a	n/a
Jun	37.8 C (100.0 F)	10.0 C (50.0 F)	n/a	n/a
Jul	38.9 C (102.0 F)	13.9 C (57.0 F)	n/a	n/a
Aug	36.1 C (97.0 F)	13.9 C (57.0 F)	n/a	n/a
Sep	36.7 C (98.1 F)	16.7 C (62.1 F)	n/a	n/a
Oct	38.9 C (102.0 F)	10.6 C (51.1 F)	n/a	n/a
Nov	36.7 C (98.1 F)	7.8 C (46.0 F)	n/a	n/a
Dec	35.6 C (96.1 F)	5.6 C (42.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Jalcocotan still stand. 1983 holds the most, with 163.

Standing records at Jalcocotan by the year they were set
Year set	Standing records
1970	66
1971	127
1972	65
1973	30
1974	34
1975	62
1976	69
1977	65
1978	51
1979	48
1980	147
1981	72
1982	87
1983	163
1984	102
1985	29
1986	8
1987	13
1988	31
1992	49
1993	78
1994	68

Wettest Day of Each Month

Dec: 159.8 mm (6.3 in)

The wettest day on record for each calendar month at Jalcocotan. The most was 159.8 mm (6.3 in) on 13 December 1992.

Record daily precipitation for each month at Jalcocotan
Month	Record daily precipitation (mm)	Date
Jan	86.1 mm (3.4 in)	12 January 1987
Feb	61.5 mm (2.4 in)	11 February 1978
Mar	17.8 mm (0.7 in)	2 March 1968
Apr	13.0 mm (0.5 in)	2 April 1966
May	130.3 mm (5.1 in)	27 May 1983
Jun	96.3 mm (3.8 in)	18 June 1971
Jul	153.2 mm (6.0 in)	4 July 1969
Aug	157.2 mm (6.2 in)	29 August 1968
Sep	146.8 mm (5.8 in)	1 September 1971
Oct	101.3 mm (4.0 in)	12 October 1968
Nov	62.0 mm (2.4 in)	25 November 1982
Dec	159.8 mm (6.3 in)	13 December 1992

Period of Record Coverage

1970 to 1994

22 years of record at Jalcocotan, 1970 to 1994. 16 years have data for under 90 percent of days and are left out of rankings: 1970, 1972, 1973, 1974, 1975, 1976, 1978, 1979 and others.

Days with data per year at Jalcocotan
Year	Days with data	Share of year	Complete
1970	143	39%	No
1971	334	92%	Yes
1972	305	83%	No
1973	92	25%	No
1974	153	42%	No
1975	304	83%	No
1976	272	74%	No
1977	365	100%	Yes
1978	273	75%	No
1979	213	58%	No
1980	335	92%	Yes
1981	365	100%	Yes
1982	334	92%	Yes
1983	284	78%	No
1984	178	49%	No
1985	146	40%	No
1986	59	16%	No
1987	65	18%	No
1988	31	8%	No
1992	212	58%	No
1993	333	91%	Yes
1994	175	48%	No

Latest Records

No records were set at this station in the latest data.

Extremes by Year

1962 to 1994

Yearly extremes at Jalcocotan: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	38.9 C (102.0 F)	1983	35.9 C (96.5 F)	22
Coldest night (TNn)	3.9 C (39.0 F)	1978	6.7 C (44.1 F)	22
Wettest day (Rx1day)	159.8 mm (6.3 in)	1992	91.1 mm (3.6 in)	32
Wettest five days (Rx5day)	336.0 mm (13.2 in)	1971	179.4 mm (7.1 in)	32
Longest dry spell (CDD)	170 days	1982	92 days	32

Hottest day (TXx)

The hottest day of the year at Jalcocotan, 1962 to 1994. The record is 38.9 C (102.0 F) in 1983, marked on the chart; the median year is 35.9 C (96.5 F).

Hottest day (TXx) at Jalcocotan by year
Year	Hottest day (TXx)
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	36.7 C (98.1 F)
1971	36.1 C (97.0 F)
1972	36.1 C (97.0 F)
1973	33.9 C (93.0 F)
1974	35.6 C (96.1 F)
1975	35.6 C (96.1 F)
1976	35.6 C (96.1 F)
1977	35.6 C (96.1 F)
1978	37.2 C (99.0 F)
1979	35.0 C (95.0 F)
1980	36.7 C (98.1 F)
1981	37.8 C (100.0 F)
1982	37.8 C (100.0 F)
1983	38.9 C (102.0 F)
1984	38.9 C (102.0 F)
1985	35.0 C (95.0 F)
1986	32.8 C (91.0 F)
1987	28.9 C (84.0 F)
1988	30.0 C (86.0 F)
1989	n/a
1990	n/a
1992	35.0 C (95.0 F)
1993	38.9 C (102.0 F)
1994	37.8 C (100.0 F)

Coldest night (TNn)

The coldest night of the year at Jalcocotan, 1962 to 1994. The record is 3.9 C (39.0 F) in 1978, marked on the chart; the median year is 6.7 C (44.1 F).

Coldest night (TNn) at Jalcocotan by year
Year	Coldest night (TNn)
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	11.7 C (53.1 F)
1971	7.8 C (46.0 F)
1972	7.2 C (45.0 F)
1973	8.9 C (48.0 F)
1974	8.9 C (48.0 F)
1975	5.0 C (41.0 F)
1976	7.8 C (46.0 F)
1977	5.6 C (42.1 F)
1978	3.9 C (39.0 F)
1979	3.9 C (39.0 F)
1980	5.6 C (42.1 F)
1981	6.7 C (44.1 F)
1982	5.0 C (41.0 F)
1983	5.0 C (41.0 F)
1984	8.9 C (48.0 F)
1985	6.7 C (44.1 F)
1986	6.7 C (44.1 F)
1987	5.6 C (42.1 F)
1988	13.9 C (57.0 F)
1989	n/a
1990	n/a
1992	8.9 C (48.0 F)
1993	5.6 C (42.1 F)
1994	16.7 C (62.1 F)

Wettest day (Rx1day)

The wettest day of the year at Jalcocotan, 1962 to 1994. The record is 159.8 mm (6.3 in) in 1992, marked on the chart; the median year is 91.1 mm (3.6 in).

Wettest day (Rx1day) at Jalcocotan by year
Year	Wettest day (Rx1day)
1962	55.9 mm (2.2 in)
1963	53.3 mm (2.1 in)
1964	95.3 mm (3.8 in)
1965	99.8 mm (3.9 in)
1966	126.0 mm (5.0 in)
1967	129.8 mm (5.1 in)
1968	157.2 mm (6.2 in)
1969	153.2 mm (6.0 in)
1970	119.9 mm (4.7 in)
1971	146.8 mm (5.8 in)
1972	55.1 mm (2.2 in)
1973	64.0 mm (2.5 in)
1974	86.9 mm (3.4 in)
1975	96.8 mm (3.8 in)
1976	79.8 mm (3.1 in)
1977	113.8 mm (4.5 in)
1978	83.8 mm (3.3 in)
1979	20.1 mm (0.8 in)
1980	109.0 mm (4.3 in)
1981	80.5 mm (3.2 in)
1982	62.0 mm (2.4 in)
1983	130.3 mm (5.1 in)
1984	32.5 mm (1.3 in)
1985	125.0 mm (4.9 in)
1986	17.8 mm (0.7 in)
1987	86.1 mm (3.4 in)
1988	0.0 mm (0.00 in)
1989	79.0 mm (3.1 in)
1990	52.6 mm (2.1 in)
1992	159.8 mm (6.3 in)
1993	142.0 mm (5.6 in)
1994	125.2 mm (4.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Jalcocotan, 1962 to 1994. The record is 336.0 mm (13.2 in) in 1971, marked on the chart; the median year is 179.4 mm (7.1 in).

Wettest five days (Rx5day) at Jalcocotan by year
Year	Wettest five days (Rx5day)
1962	189.8 mm (7.5 in)
1963	122.5 mm (4.8 in)
1964	189.8 mm (7.5 in)
1965	103.4 mm (4.1 in)
1966	212.9 mm (8.4 in)
1967	215.5 mm (8.5 in)
1968	271.1 mm (10.7 in)
1969	256.6 mm (10.1 in)
1970	270.3 mm (10.6 in)
1971	336.0 mm (13.2 in)
1972	74.0 mm (2.9 in)
1973	177.8 mm (7.0 in)
1974	178.5 mm (7.0 in)
1975	200.5 mm (7.9 in)
1976	238.4 mm (9.4 in)
1977	131.4 mm (5.2 in)
1978	176.8 mm (7.0 in)
1979	36.6 mm (1.4 in)
1980	217.8 mm (8.6 in)
1981	113.4 mm (4.5 in)
1982	112.3 mm (4.4 in)
1983	213.9 mm (8.4 in)
1984	32.5 mm (1.3 in)
1985	179.1 mm (7.1 in)
1986	17.8 mm (0.7 in)
1987	136.9 mm (5.4 in)
1988	0.0 mm (0.00 in)
1989	103.4 mm (4.1 in)
1990	180.4 mm (7.1 in)
1992	179.6 mm (7.1 in)
1993	328.2 mm (12.9 in)
1994	205.1 mm (8.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at Jalcocotan, 1962 to 1994. The record is 170 days in 1982, marked on the chart; the median year is 92 days.

Longest dry spell (CDD) at Jalcocotan by year
Year	Longest dry spell (CDD)
1962	24 days
1963	120 days
1964	146 days
1965	118 days
1966	72 days
1967	137 days
1968	83 days
1969	123 days
1970	117 days
1971	133 days
1972	158 days
1973	22 days
1974	48 days
1975	133 days
1976	162 days
1977	95 days
1978	68 days
1979	116 days
1980	109 days
1981	97 days
1982	170 days
1983	73 days
1984	153 days
1985	89 days
1986	57 days
1987	15 days
1988	31 days
1989	39 days
1990	36 days
1992	24 days
1993	62 days
1994	25 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 Jalcocotan standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Jalcocotan 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).