Ayotoxco (Cfe) Weather Records (MXN00021014)

Record envelope, standing records and threshold days for Ayotoxco (Cfe) (MXN00021014), Mexico, with 32 years of record.

Key Facts for Ayotoxco (Cfe)

Ayotoxco (Cfe) (MXN00021014) is a weather station in Mexico at 20.08 latitude and -97.40 longitude, 307 m (1,007 ft) above sea level.
The station reports from 1965 to 1996, 32 years of record.
1,464 records set at Ayotoxco (Cfe) still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Ayotoxco (Cfe) set a daily record precipitation of 59.9 mm (2.4 in) on 29 April 1996.

About the Station

Location: Mexico, 20.08 latitude, -97.40 longitude.
Elevation: 307 m (1,007 ft).
Period of record: 1965 to 1996, 32 years.
Eligible elements: 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 Ayotoxco (Cfe). 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 Ayotoxco (Cfe), with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	30.0 C (86.0 F)	3.9 C (39.0 F)	n/a	n/a
Feb	32.8 C (91.0 F)	5.6 C (42.1 F)	n/a	n/a
Mar	37.8 C (100.0 F)	5.6 C (42.1 F)	n/a	n/a
Apr	40.6 C (105.1 F)	10.0 C (50.0 F)	n/a	n/a
May	38.9 C (102.0 F)	15.6 C (60.1 F)	n/a	n/a
Jun	36.1 C (97.0 F)	15.6 C (60.1 F)	n/a	n/a
Jul	37.8 C (100.0 F)	16.1 C (61.0 F)	n/a	n/a
Aug	36.7 C (98.1 F)	17.8 C (64.0 F)	n/a	n/a
Sep	35.0 C (95.0 F)	14.4 C (57.9 F)	n/a	n/a
Oct	38.9 C (102.0 F)	8.9 C (48.0 F)	n/a	n/a
Nov	32.2 C (90.0 F)	6.7 C (44.1 F)	n/a	n/a
Dec	33.3 C (91.9 F)	-1.1 C (30.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Ayotoxco (Cfe) still stand. 1981 holds the most, with 169.

Standing records at Ayotoxco (Cfe) by the year they were set
Year set	Standing records
1979	87
1980	100
1981	169
1982	56
1983	60
1984	94
1985	57
1986	40
1987	77
1988	50
1989	96
1990	52
1991	91
1992	88
1993	70
1994	77
1995	111
1996	89

Wettest Day of Each Month

Sep: 289.8 mm (11.4 in)

The wettest day on record for each calendar month at Ayotoxco (Cfe). The most was 289.8 mm (11.4 in) on 20 September 1974.

Record daily precipitation for each month at Ayotoxco (Cfe)
Month	Record daily precipitation (mm)	Date
Jan	99.8 mm (3.9 in)	14 January 1976
Feb	63.2 mm (2.5 in)	7 February 1975
Mar	90.2 mm (3.6 in)	14 March 1985
Apr	145.3 mm (5.7 in)	23 April 1996
May	160.0 mm (6.3 in)	5 May 1987
Jun	216.7 mm (8.5 in)	19 June 1968
Jul	149.9 mm (5.9 in)	18 July 1991
Aug	168.9 mm (6.6 in)	5 August 1979
Sep	289.8 mm (11.4 in)	20 September 1974
Oct	185.9 mm (7.3 in)	24 October 1980
Nov	165.1 mm (6.5 in)	12 November 1986
Dec	122.2 mm (4.8 in)	7 December 1968

Period of Record Coverage

1979 to 1996

18 years of record at Ayotoxco (Cfe), 1979 to 1996. 3 years have data for under 90 percent of days and are left out of rankings: 1979, 1995, 1996.

Days with data per year at Ayotoxco (Cfe)
Year	Days with data	Share of year	Complete
1979	241	66%	No
1980	360	98%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	363	99%	Yes
1984	365	100%	Yes
1985	364	100%	Yes
1986	364	100%	Yes
1987	362	99%	Yes
1988	364	99%	Yes
1989	364	100%	Yes
1990	365	100%	Yes
1991	365	100%	Yes
1992	366	100%	Yes
1993	364	100%	Yes
1994	364	100%	Yes
1995	274	75%	No
1996	209	57%	No

Latest Records

Latest records at Ayotoxco (Cfe)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
29 April 1996	Ayotoxco (Cfe), MX	daily rain	59.9 mm (2.4 in)	13.7 mm (0.5 in)	20 years	16 of 100 (Routine)
23 April 1996	Ayotoxco (Cfe), MX	monthly rain	145.3 mm (5.7 in)	39.1 mm (1.5 in)	10 years	36 of 100 (Notable)
6 April 1996	Ayotoxco (Cfe), MX	daily rain (Tie)	30.0 mm (1.2 in)	tie	3 years	0 of 100 (Routine)
16 February 1996	Ayotoxco (Cfe), MX	daily rain	21.8 mm (0.9 in)	0.7 mm (0.03 in)	28 years	11 of 100 (Routine)
15 February 1996	Ayotoxco (Cfe), MX	daily rain	45.0 mm (1.8 in)	32.3 mm (1.3 in)	22 years	42 of 100 (Notable)
27 October 1995	Ayotoxco (Cfe), MX	daily rain	46.0 mm (1.8 in)	22.1 mm (0.9 in)	25 years	18 of 100 (Routine)
20 October 1995	Ayotoxco (Cfe), MX	daily rain	150.1 mm (5.9 in)	110.0 mm (4.3 in)	28 years	51 of 100 (Notable)
28 September 1995	Ayotoxco (Cfe), MX	daily rain	59.9 mm (2.4 in)	12.1 mm (0.5 in)	25 years	14 of 100 (Routine)
20 February 1995	Ayotoxco (Cfe), MX	daily rain	30.0 mm (1.2 in)	6.6 mm (0.26 in)	24 years	16 of 100 (Routine)
17 February 1995	Ayotoxco (Cfe), MX	daily rain	24.9 mm (1.0 in)	2.3 mm (0.09 in)	25 years	12 of 100 (Routine)
1 February 1995	Ayotoxco (Cfe), MX	daily rain	20.8 mm (0.8 in)	10.4 mm (0.4 in)	12 years	16 of 100 (Routine)
12 January 1995	Ayotoxco (Cfe), MX	daily rain	14.0 mm (0.6 in)	1.6 mm (0.06 in)	13 years	8 of 100 (Routine)

Climate Trend

15 complete years, 1980 to 1994

One stripe for each of 15 complete years at Ayotoxco (Cfe), 1980 to 1994. Blue stripes are years cooler than the station's own mean of 23.0 C (73.3 F); red stripes are warmer. The coolest year was 1981, at 22.0 C (71.5 F), and the warmest was 1991, at 24.0 C (75.2 F). The strongest colour marks a difference of 1.1 C (2.0 F).

Annual mean temperature at Ayotoxco (Cfe) as warming stripes, 1980 to 1994
Year	Annual mean temperature	Difference from the station mean
1980	23.3 C	+0.32 C
1981	22.0 C	-1.01 C
1982	23.4 C	+0.44 C
1983	23.1 C	+0.10 C
1984	23.1 C	+0.12 C
1985	22.8 C	-0.15 C
1986	23.1 C	+0.11 C
1987	22.3 C	-0.66 C
1988	22.7 C	-0.31 C
1989	22.5 C	-0.50 C
1990	23.5 C	+0.55 C
1991	24.0 C	+1.02 C
1992	23.2 C	+0.21 C
1993	22.7 C	-0.30 C
1994	23.0 C	+0.08 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

1965 to 1996

Yearly extremes at Ayotoxco (Cfe): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	40.6 C (105.1 F)	1984	36.1 C (97.0 F)	18
Coldest night (TNn)	-1.1 C (30.0 F)	1989	7.0 C (44.5 F)	18
Wettest day (Rx1day)	289.8 mm (11.4 in)	1974	125.9 mm (5.0 in)	32
Wettest five days (Rx5day)	397.5 mm (15.6 in)	1974	240.5 mm (9.5 in)	32
Longest dry spell (CDD)	48 days	1977	23 days	32

Hottest day (TXx)

The hottest day of the year at Ayotoxco (Cfe), 1965 to 1996. The record is 40.6 C (105.1 F) in 1984, marked on the chart; the median year is 36.1 C (97.0 F).

Hottest day (TXx) at Ayotoxco (Cfe) by year
Year	Hottest day (TXx)
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	37.2 C (99.0 F)
1980	38.9 C (102.0 F)
1981	35.0 C (95.0 F)
1982	34.4 C (93.9 F)
1983	36.7 C (98.1 F)
1984	40.6 C (105.1 F)
1985	35.0 C (95.0 F)
1986	34.4 C (93.9 F)
1987	35.0 C (95.0 F)
1988	36.1 C (97.0 F)
1989	36.7 C (98.1 F)
1990	38.9 C (102.0 F)
1991	35.6 C (96.1 F)
1992	36.1 C (97.0 F)
1993	33.9 C (93.0 F)
1994	37.8 C (100.0 F)
1995	33.9 C (93.0 F)
1996	36.7 C (98.1 F)

Coldest night (TNn)

The coldest night of the year at Ayotoxco (Cfe), 1965 to 1996. The record is -1.1 C (30.0 F) in 1989, marked on the chart; the median year is 7.0 C (44.5 F).

Coldest night (TNn) at Ayotoxco (Cfe) by year
Year	Coldest night (TNn)
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	9.4 C (48.9 F)
1980	5.6 C (42.1 F)
1981	10.0 C (50.0 F)
1982	11.7 C (53.1 F)
1983	1.7 C (35.1 F)
1984	8.3 C (46.9 F)
1985	5.0 C (41.0 F)
1986	8.9 C (48.0 F)
1987	7.2 C (45.0 F)
1988	6.7 C (44.1 F)
1989	-1.1 C (30.0 F)
1990	8.9 C (48.0 F)
1991	7.8 C (46.0 F)
1992	3.9 C (39.0 F)
1993	5.6 C (42.1 F)
1994	5.6 C (42.1 F)
1995	7.8 C (46.0 F)
1996	5.6 C (42.1 F)

Wettest day (Rx1day)

The wettest day of the year at Ayotoxco (Cfe), 1965 to 1996. The record is 289.8 mm (11.4 in) in 1974, marked on the chart; the median year is 125.9 mm (5.0 in).

Wettest day (Rx1day) at Ayotoxco (Cfe) by year
Year	Wettest day (Rx1day)
1965	80.5 mm (3.2 in)
1966	181.1 mm (7.1 in)
1967	157.5 mm (6.2 in)
1968	216.7 mm (8.5 in)
1969	111.8 mm (4.4 in)
1970	85.9 mm (3.4 in)
1971	100.6 mm (4.0 in)
1972	88.4 mm (3.5 in)
1973	142.0 mm (5.6 in)
1974	289.8 mm (11.4 in)
1975	99.8 mm (3.9 in)
1976	149.9 mm (5.9 in)
1977	90.4 mm (3.6 in)
1978	120.1 mm (4.7 in)
1979	168.9 mm (6.6 in)
1980	185.9 mm (7.3 in)
1981	130.8 mm (5.1 in)
1982	80.0 mm (3.1 in)
1983	100.6 mm (4.0 in)
1984	130.3 mm (5.1 in)
1985	90.2 mm (3.6 in)
1986	165.1 mm (6.5 in)
1987	160.0 mm (6.3 in)
1988	90.2 mm (3.6 in)
1989	110.0 mm (4.3 in)
1990	82.6 mm (3.3 in)
1991	149.9 mm (5.9 in)
1992	122.2 mm (4.8 in)
1993	99.8 mm (3.9 in)
1994	129.5 mm (5.1 in)
1995	150.1 mm (5.9 in)
1996	145.3 mm (5.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Ayotoxco (Cfe), 1965 to 1996. The record is 397.5 mm (15.6 in) in 1974, marked on the chart; the median year is 240.5 mm (9.5 in).

Wettest five days (Rx5day) at Ayotoxco (Cfe) by year
Year	Wettest five days (Rx5day)
1965	173.0 mm (6.8 in)
1966	378.8 mm (14.9 in)
1967	285.5 mm (11.2 in)
1968	308.1 mm (12.1 in)
1969	270.6 mm (10.7 in)
1970	265.0 mm (10.4 in)
1971	214.9 mm (8.5 in)
1972	223.0 mm (8.8 in)
1973	313.7 mm (12.4 in)
1974	397.5 mm (15.6 in)
1975	268.2 mm (10.6 in)
1976	231.2 mm (9.1 in)
1977	162.5 mm (6.4 in)
1978	204.5 mm (8.1 in)
1979	249.7 mm (9.8 in)
1980	312.4 mm (12.3 in)
1981	258.0 mm (10.2 in)
1982	155.4 mm (6.1 in)
1983	178.3 mm (7.0 in)
1984	366.8 mm (14.4 in)
1985	122.1 mm (4.8 in)
1986	317.2 mm (12.5 in)
1987	217.7 mm (8.6 in)
1988	167.9 mm (6.6 in)
1989	219.8 mm (8.7 in)
1990	251.4 mm (9.9 in)
1991	180.7 mm (7.1 in)
1992	276.7 mm (10.9 in)
1993	287.3 mm (11.3 in)
1994	206.0 mm (8.1 in)
1995	214.1 mm (8.4 in)
1996	147.1 mm (5.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Ayotoxco (Cfe), 1965 to 1996. The record is 48 days in 1977, marked on the chart; the median year is 23 days.

Longest dry spell (CDD) at Ayotoxco (Cfe) by year
Year	Longest dry spell (CDD)
1965	17 days
1966	27 days
1967	19 days
1968	23 days
1969	25 days
1970	24 days
1971	33 days
1972	22 days
1973	20 days
1974	18 days
1975	29 days
1976	23 days
1977	48 days
1978	30 days
1979	23 days
1980	15 days
1981	19 days
1982	15 days
1983	39 days
1984	24 days
1985	21 days
1986	23 days
1987	14 days
1988	28 days
1989	26 days
1990	18 days
1991	16 days
1992	19 days
1993	32 days
1994	25 days
1995	12 days
1996	27 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 Ayotoxco (Cfe) standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Ayotoxco (Cfe) 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).