Chicayan Weather Records (MXN00030039)

Record envelope, standing records and threshold days for Chicayan (MXN00030039), Mexico, with 35 years of record.

Key Facts for Chicayan

Chicayan (MXN00030039) is a weather station in Mexico at 21.62 latitude and -98.12 longitude, 37 m (121 ft) above sea level.
The station reports from 1960 to 1994, 35 years of record.
1,464 records set at Chicayan still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.

About the Station

Location: Mexico, 21.62 latitude, -98.12 longitude.
Elevation: 37 m (121 ft).
Period of record: 1960 to 1994, 35 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 Chicayan. 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 Chicayan, 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)	0.0 C (32.0 F)	n/a	n/a
Feb	38.9 C (102.0 F)	1.1 C (34.0 F)	n/a	n/a
Mar	42.8 C (109.0 F)	3.9 C (39.0 F)	n/a	n/a
Apr	45.6 C (114.1 F)	10.0 C (50.0 F)	n/a	n/a
May	48.9 C (120.0 F)	11.7 C (53.1 F)	n/a	n/a
Jun	43.3 C (109.9 F)	15.0 C (59.0 F)	n/a	n/a
Jul	40.6 C (105.1 F)	16.7 C (62.1 F)	n/a	n/a
Aug	40.6 C (105.1 F)	16.1 C (61.0 F)	n/a	n/a
Sep	40.6 C (105.1 F)	10.0 C (50.0 F)	n/a	n/a
Oct	38.9 C (102.0 F)	8.9 C (48.0 F)	n/a	n/a
Nov	40.0 C (104.0 F)	2.8 C (37.0 F)	n/a	n/a
Dec	35.6 C (96.1 F)	-1.1 C (30.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Chicayan still stand. 1960 holds the most, with 116.

Standing records at Chicayan by the year they were set
Year set	Standing records
1960	116
1961	116
1962	58
1963	81
1964	98
1965	82
1966	48
1967	77
1968	35
1969	41
1970	55
1971	39
1972	29
1973	46
1974	34
1975	31
1976	35
1977	22
1978	52
1979	22
1980	31
1981	29
1982	37
1983	41
1984	36
1985	13
1990	47
1991	21
1992	22
1993	40
1994	30

Wettest Day of Each Month

Jul: 233.2 mm (9.2 in)

The wettest day on record for each calendar month at Chicayan. The most was 233.2 mm (9.2 in) on 26 July 1975.

Record daily precipitation for each month at Chicayan
Month	Record daily precipitation (mm)	Date
Jan	51.3 mm (2.0 in)	12 January 1990
Feb	41.9 mm (1.6 in)	21 February 1970
Mar	82.8 mm (3.3 in)	23 March 1967
Apr	112.8 mm (4.4 in)	21 April 1977
May	121.7 mm (4.8 in)	6 May 1963
Jun	140.0 mm (5.5 in)	26 June 1962
Jul	233.2 mm (9.2 in)	26 July 1975
Aug	130.6 mm (5.1 in)	6 August 1980
Sep	158.5 mm (6.2 in)	20 September 1993
Oct	188.0 mm (7.4 in)	20 October 1993
Nov	74.9 mm (2.9 in)	29 November 1964
Dec	89.9 mm (3.5 in)	4 December 1981

Period of Record Coverage

1960 to 1994

31 years of record at Chicayan, 1960 to 1994. 8 years have data for under 90 percent of days and are left out of rankings: 1960, 1964, 1985, 1990, 1991, 1992, 1993, 1994.

Days with data per year at Chicayan
Year	Days with data	Share of year	Complete
1960	151	41%	No
1961	347	95%	Yes
1962	364	100%	Yes
1963	365	100%	Yes
1964	304	83%	No
1965	365	100%	Yes
1966	364	100%	Yes
1967	363	99%	Yes
1968	331	90%	Yes
1969	360	99%	Yes
1970	361	99%	Yes
1971	363	99%	Yes
1972	362	99%	Yes
1973	361	99%	Yes
1974	362	99%	Yes
1975	348	95%	Yes
1976	361	99%	Yes
1977	333	91%	Yes
1978	360	99%	Yes
1979	329	90%	Yes
1980	358	98%	Yes
1981	362	99%	Yes
1982	357	98%	Yes
1983	361	99%	Yes
1984	331	90%	Yes
1985	204	56%	No
1990	261	72%	No
1991	198	54%	No
1992	310	85%	No
1993	301	82%	No
1994	292	80%	No

Latest Records

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

Climate Trend

18 complete years, 1962 to 1983

One stripe for each of 18 complete years at Chicayan, 1962 to 1983. Blue stripes are years cooler than the station's own mean of 23.8 C (74.9 F); red stripes are warmer. The coolest year was 1963, at 22.5 C (72.4 F), and the warmest was 1965, at 25.6 C (78.1 F). The strongest colour marks a difference of 1.8 C (3.2 F).

Annual mean temperature at Chicayan as warming stripes, 1962 to 1983
Year	Annual mean temperature	Difference from the station mean
1962	23.7 C	-0.12 C
1963	22.5 C	-1.38 C
1965	25.6 C	+1.77 C
1966	24.6 C	+0.74 C
1967	25.5 C	+1.64 C
1969	23.7 C	-0.18 C
1970	23.1 C	-0.76 C
1971	24.2 C	+0.32 C
1972	24.1 C	+0.24 C
1973	24.1 C	+0.22 C
1974	23.5 C	-0.33 C
1975	24.0 C	+0.14 C
1976	22.5 C	-1.30 C
1978	24.1 C	+0.23 C
1980	23.6 C	-0.22 C
1981	23.3 C	-0.50 C
1982	23.8 C	+0.01 C
1983	23.4 C	-0.43 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

1960 to 1994

Yearly extremes at Chicayan: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	48.9 C (120.0 F)	1978	41.7 C (107.1 F)	31
Coldest night (TNn)	-1.1 C (30.0 F)	1983	3.9 C (39.0 F)	31
Wettest day (Rx1day)	233.2 mm (9.2 in)	1975	94.5 mm (3.7 in)	31
Wettest five days (Rx5day)	312.5 mm (12.3 in)	1962	177.4 mm (7.0 in)	31
Longest dry spell (CDD)	147 days	1990	36 days	31

Hottest day (TXx)

The hottest day of the year at Chicayan, 1960 to 1994. The record is 48.9 C (120.0 F) in 1978, marked on the chart; the median year is 41.7 C (107.1 F).

Hottest day (TXx) at Chicayan by year
Year	Hottest day (TXx)
1960	38.9 C (102.0 F)
1961	42.8 C (109.0 F)
1962	39.4 C (102.9 F)
1963	36.7 C (98.1 F)
1964	43.9 C (111.0 F)
1965	45.6 C (114.1 F)
1966	41.7 C (107.1 F)
1967	46.7 C (116.1 F)
1968	37.8 C (100.0 F)
1969	41.7 C (107.1 F)
1970	41.7 C (107.1 F)
1971	45.0 C (113.0 F)
1972	40.0 C (104.0 F)
1973	48.3 C (118.9 F)
1974	43.3 C (109.9 F)
1975	42.8 C (109.0 F)
1976	37.2 C (99.0 F)
1977	39.4 C (102.9 F)
1978	48.9 C (120.0 F)
1979	41.7 C (107.1 F)
1980	43.3 C (109.9 F)
1981	37.8 C (100.0 F)
1982	39.4 C (102.9 F)
1983	40.6 C (105.1 F)
1984	42.8 C (109.0 F)
1985	36.1 C (97.0 F)
1990	42.8 C (109.0 F)
1991	42.8 C (109.0 F)
1992	35.0 C (95.0 F)
1993	37.8 C (100.0 F)
1994	36.7 C (98.1 F)

Coldest night (TNn)

The coldest night of the year at Chicayan, 1960 to 1994. The record is -1.1 C (30.0 F) in 1983, marked on the chart; the median year is 3.9 C (39.0 F).

Coldest night (TNn) at Chicayan by year
Year	Coldest night (TNn)
1960	10.0 C (50.0 F)
1961	8.9 C (48.0 F)
1962	7.2 C (45.0 F)
1963	0.6 C (33.1 F)
1964	1.7 C (35.1 F)
1965	2.2 C (36.0 F)
1966	2.8 C (37.0 F)
1967	2.8 C (37.0 F)
1968	3.9 C (39.0 F)
1969	5.6 C (42.1 F)
1970	1.1 C (34.0 F)
1971	5.0 C (41.0 F)
1972	5.0 C (41.0 F)
1973	0.0 C (32.0 F)
1974	2.2 C (36.0 F)
1975	0.0 C (32.0 F)
1976	2.2 C (36.0 F)
1977	3.9 C (39.0 F)
1978	5.6 C (42.1 F)
1979	3.9 C (39.0 F)
1980	6.7 C (44.1 F)
1981	6.7 C (44.1 F)
1982	6.1 C (43.0 F)
1983	-1.1 C (30.0 F)
1984	3.9 C (39.0 F)
1985	2.8 C (37.0 F)
1990	6.7 C (44.1 F)
1991	7.8 C (46.0 F)
1992	8.9 C (48.0 F)
1993	5.6 C (42.1 F)
1994	6.7 C (44.1 F)

Wettest day (Rx1day)

The wettest day of the year at Chicayan, 1960 to 1994. The record is 233.2 mm (9.2 in) in 1975, marked on the chart; the median year is 94.5 mm (3.7 in).

Wettest day (Rx1day) at Chicayan by year
Year	Wettest day (Rx1day)
1960	25.9 mm (1.0 in)
1961	89.9 mm (3.5 in)
1962	140.0 mm (5.5 in)
1963	121.7 mm (4.8 in)
1964	74.9 mm (2.9 in)
1965	77.0 mm (3.0 in)
1966	119.9 mm (4.7 in)
1967	124.0 mm (4.9 in)
1968	69.9 mm (2.8 in)
1969	95.8 mm (3.8 in)
1970	119.9 mm (4.7 in)
1971	63.0 mm (2.5 in)
1972	68.8 mm (2.7 in)
1973	144.8 mm (5.7 in)
1974	114.8 mm (4.5 in)
1975	233.2 mm (9.2 in)
1976	86.9 mm (3.4 in)
1977	112.8 mm (4.4 in)
1978	113.8 mm (4.5 in)
1979	94.5 mm (3.7 in)
1980	130.6 mm (5.1 in)
1981	99.8 mm (3.9 in)
1982	59.9 mm (2.4 in)
1983	53.8 mm (2.1 in)
1984	90.4 mm (3.6 in)
1985	72.9 mm (2.9 in)
1990	51.3 mm (2.0 in)
1991	63.8 mm (2.5 in)
1992	135.4 mm (5.3 in)
1993	188.0 mm (7.4 in)
1994	63.8 mm (2.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Chicayan, 1960 to 1994. The record is 312.5 mm (12.3 in) in 1962, marked on the chart; the median year is 177.4 mm (7.0 in).

Wettest five days (Rx5day) at Chicayan by year
Year	Wettest five days (Rx5day)
1960	72.4 mm (2.9 in)
1961	198.2 mm (7.8 in)
1962	312.5 mm (12.3 in)
1963	131.6 mm (5.2 in)
1964	126.5 mm (5.0 in)
1965	98.8 mm (3.9 in)
1966	245.5 mm (9.7 in)
1967	277.8 mm (10.9 in)
1968	134.9 mm (5.3 in)
1969	184.6 mm (7.3 in)
1970	251.5 mm (9.9 in)
1971	121.4 mm (4.8 in)
1972	149.0 mm (5.9 in)
1973	226.9 mm (8.9 in)
1974	249.3 mm (9.8 in)
1975	242.9 mm (9.6 in)
1976	149.2 mm (5.9 in)
1977	112.8 mm (4.4 in)
1978	237.0 mm (9.3 in)
1979	168.9 mm (6.6 in)
1980	277.1 mm (10.9 in)
1981	196.9 mm (7.8 in)
1982	85.3 mm (3.4 in)
1983	157.2 mm (6.2 in)
1984	242.0 mm (9.5 in)
1985	106.7 mm (4.2 in)
1990	52.6 mm (2.1 in)
1991	177.4 mm (7.0 in)
1992	196.7 mm (7.7 in)
1993	279.8 mm (11.0 in)
1994	137.4 mm (5.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Chicayan, 1960 to 1994. The record is 147 days in 1990, marked on the chart; the median year is 36 days.

Longest dry spell (CDD) at Chicayan by year
Year	Longest dry spell (CDD)
1960	14 days
1961	67 days
1962	48 days
1963	125 days
1964	33 days
1965	36 days
1966	42 days
1967	40 days
1968	49 days
1969	29 days
1970	36 days
1971	34 days
1972	27 days
1973	98 days
1974	25 days
1975	54 days
1976	31 days
1977	29 days
1978	38 days
1979	44 days
1980	29 days
1981	33 days
1982	40 days
1983	41 days
1984	73 days
1985	21 days
1990	147 days
1991	33 days
1992	23 days
1993	27 days
1994	26 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 Chicayan standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Chicayan 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 2026-10-14 (14 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).