San Bartolome Ayautla Weather Records (MXN00020006)

Record envelope, standing records and threshold days for San Bartolome Ayautla (MXN00020006), Mexico, with 30 years of record.

Key Facts for San Bartolome Ayautla

San Bartolome Ayautla (MXN00020006) is a weather station in Mexico at 18.02 latitude and -96.67 longitude, 702 m (2,303 ft) above sea level.
The station reports from 1955 to 1984, 30 years of record.
1,464 records set at San Bartolome Ayautla still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Mexico, 18.02 latitude, -96.67 longitude.
Elevation: 702 m (2,303 ft).
Period of record: 1955 to 1984, 30 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 San Bartolome Ayautla. 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 San Bartolome Ayautla, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	36.1 C (97.0 F)	5.6 C (42.1 F)	n/a	n/a
Feb	38.9 C (102.0 F)	5.6 C (42.1 F)	n/a	n/a
Mar	40.0 C (104.0 F)	7.8 C (46.0 F)	n/a	n/a
Apr	40.0 C (104.0 F)	8.9 C (48.0 F)	n/a	n/a
May	39.4 C (102.9 F)	10.6 C (51.1 F)	n/a	n/a
Jun	38.9 C (102.0 F)	12.8 C (55.0 F)	n/a	n/a
Jul	39.4 C (102.9 F)	12.8 C (55.0 F)	n/a	n/a
Aug	36.7 C (98.1 F)	12.8 C (55.0 F)	n/a	n/a
Sep	35.0 C (95.0 F)	12.8 C (55.0 F)	n/a	n/a
Oct	37.8 C (100.0 F)	11.1 C (52.0 F)	n/a	n/a
Nov	38.3 C (100.9 F)	10.0 C (50.0 F)	n/a	n/a
Dec	35.6 C (96.1 F)	7.2 C (45.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at San Bartolome Ayautla still stand. 1969 holds the most, with 108.

Standing records at San Bartolome Ayautla by the year they were set
Year set	Standing records
1955	7
1956	35
1957	35
1958	73
1959	102
1960	86
1961	75
1962	81
1963	28
1964	45
1965	39
1966	40
1967	45
1968	61
1969	108
1970	58
1971	21
1972	16
1973	48
1974	46
1975	19
1976	79
1977	49
1978	94
1979	6
1980	90
1981	22
1982	10
1983	23
1984	23

Wettest Day of Each Month

Oct: 238.0 mm (9.4 in)

The wettest day on record for each calendar month at San Bartolome Ayautla. The most was 238.0 mm (9.4 in) on 31 October 1959.

Record daily precipitation for each month at San Bartolome Ayautla
Month	Record daily precipitation (mm)	Date
Jan	86.4 mm (3.4 in)	31 January 1964
Feb	59.9 mm (2.4 in)	20 February 1970
Mar	74.9 mm (2.9 in)	16 March 1976
Apr	78.0 mm (3.1 in)	16 April 1972
May	111.8 mm (4.4 in)	31 May 1975
Jun	235.0 mm (9.3 in)	20 June 1973
Jul	131.1 mm (5.2 in)	26 July 1957
Aug	184.9 mm (7.3 in)	29 August 1960
Sep	179.8 mm (7.1 in)	10 September 1975
Oct	238.0 mm (9.4 in)	31 October 1959
Nov	220.0 mm (8.7 in)	7 November 1972
Dec	81.8 mm (3.2 in)	2 December 1967

Period of Record Coverage

1955 to 1984

30 years of record at San Bartolome Ayautla, 1955 to 1984. 2 years have data for under 90 percent of days and are left out of rankings: 1955, 1979.

Days with data per year at San Bartolome Ayautla
Year	Days with data	Share of year	Complete
1955	157	43%	No
1956	366	100%	Yes
1957	364	100%	Yes
1958	342	94%	Yes
1959	351	96%	Yes
1960	364	99%	Yes
1961	363	99%	Yes
1962	359	98%	Yes
1963	358	98%	Yes
1964	362	99%	Yes
1965	361	99%	Yes
1966	330	90%	Yes
1967	363	99%	Yes
1968	365	100%	Yes
1969	356	98%	Yes
1970	362	99%	Yes
1971	363	99%	Yes
1972	364	99%	Yes
1973	361	99%	Yes
1974	364	100%	Yes
1975	362	99%	Yes
1976	365	100%	Yes
1977	364	100%	Yes
1978	361	99%	Yes
1979	243	67%	No
1980	363	99%	Yes
1981	359	98%	Yes
1982	365	100%	Yes
1983	365	100%	Yes
1984	333	91%	Yes

Latest Records

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

Climate Trend

26 complete years, 1956 to 1983

One stripe for each of 26 complete years at San Bartolome Ayautla, 1956 to 1983. Blue stripes are years cooler than the station's own mean of 21.8 C (71.3 F); red stripes are warmer. The coolest year was 1978, at 20.4 C (68.7 F), and the warmest was 1968, at 23.2 C (73.8 F). The strongest colour marks a difference of 1.5 C (2.7 F).

Annual mean temperature at San Bartolome Ayautla as warming stripes, 1956 to 1983
Year	Annual mean temperature	Difference from the station mean
1956	20.9 C	-0.94 C
1957	21.9 C	+0.06 C
1958	22.3 C	+0.46 C
1959	23.1 C	+1.30 C
1960	21.3 C	-0.54 C
1961	20.6 C	-1.23 C
1962	20.7 C	-1.09 C
1963	21.4 C	-0.41 C
1964	21.9 C	+0.07 C
1965	22.1 C	+0.24 C
1967	22.1 C	+0.27 C
1968	23.2 C	+1.39 C
1969	22.7 C	+0.85 C
1970	20.7 C	-1.11 C
1971	22.1 C	+0.31 C
1972	22.2 C	+0.33 C
1973	22.6 C	+0.79 C
1974	21.7 C	-0.08 C
1975	22.1 C	+0.23 C
1976	20.9 C	-0.91 C
1977	20.8 C	-1.01 C
1978	20.4 C	-1.42 C
1980	22.2 C	+0.34 C
1981	21.8 C	-0.02 C
1982	23.2 C	+1.36 C
1983	22.7 C	+0.88 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

1955 to 1984

Yearly extremes at San Bartolome Ayautla: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	40.0 C (104.0 F)	1969	37.8 C (100.0 F)	30
Coldest night (TNn)	5.6 C (42.1 F)	1960	9.5 C (49.0 F)	30
Wettest day (Rx1day)	238.0 mm (9.4 in)	1959	129.4 mm (5.1 in)	30
Wettest five days (Rx5day)	564.4 mm (22.2 in)	1975	287.7 mm (11.3 in)	30
Longest dry spell (CDD)	46 days	1981	17 days	30

Hottest day (TXx)

The hottest day of the year at San Bartolome Ayautla, 1955 to 1984. The record is 40.0 C (104.0 F) in 1969, marked on the chart; the median year is 37.8 C (100.0 F).

Hottest day (TXx) at San Bartolome Ayautla by year
Year	Hottest day (TXx)
1955	30.0 C (86.0 F)
1956	33.3 C (91.9 F)
1957	37.8 C (100.0 F)
1958	38.3 C (100.9 F)
1959	39.4 C (102.9 F)
1960	38.9 C (102.0 F)
1961	38.9 C (102.0 F)
1962	36.7 C (98.1 F)
1963	35.6 C (96.1 F)
1964	36.7 C (98.1 F)
1965	35.6 C (96.1 F)
1966	33.9 C (93.0 F)
1967	35.6 C (96.1 F)
1968	37.8 C (100.0 F)
1969	40.0 C (104.0 F)
1970	37.8 C (100.0 F)
1971	40.0 C (104.0 F)
1972	38.9 C (102.0 F)
1973	40.0 C (104.0 F)
1974	38.9 C (102.0 F)
1975	37.8 C (100.0 F)
1976	38.9 C (102.0 F)
1977	37.8 C (100.0 F)
1978	38.9 C (102.0 F)
1979	31.7 C (89.1 F)
1980	38.3 C (100.9 F)
1981	36.1 C (97.0 F)
1982	35.6 C (96.1 F)
1983	38.3 C (100.9 F)
1984	37.8 C (100.0 F)

Coldest night (TNn)

The coldest night of the year at San Bartolome Ayautla, 1955 to 1984. The record is 5.6 C (42.1 F) in 1960, marked on the chart; the median year is 9.5 C (49.0 F).

Coldest night (TNn) at San Bartolome Ayautla by year
Year	Coldest night (TNn)
1955	10.0 C (50.0 F)
1956	7.8 C (46.0 F)
1957	7.8 C (46.0 F)
1958	7.8 C (46.0 F)
1959	10.0 C (50.0 F)
1960	5.6 C (42.1 F)
1961	10.0 C (50.0 F)
1962	5.6 C (42.1 F)
1963	7.2 C (45.0 F)
1964	8.9 C (48.0 F)
1965	10.6 C (51.1 F)
1966	10.0 C (50.0 F)
1967	10.0 C (50.0 F)
1968	8.9 C (48.0 F)
1969	10.6 C (51.1 F)
1970	7.8 C (46.0 F)
1971	10.6 C (51.1 F)
1972	10.0 C (50.0 F)
1973	7.8 C (46.0 F)
1974	7.8 C (46.0 F)
1975	10.6 C (51.1 F)
1976	8.9 C (48.0 F)
1977	7.8 C (46.0 F)
1978	10.0 C (50.0 F)
1979	10.6 C (51.1 F)
1980	7.8 C (46.0 F)
1981	8.9 C (48.0 F)
1982	11.1 C (52.0 F)
1983	10.0 C (50.0 F)
1984	10.0 C (50.0 F)

Wettest day (Rx1day)

The wettest day of the year at San Bartolome Ayautla, 1955 to 1984. The record is 238.0 mm (9.4 in) in 1959, marked on the chart; the median year is 129.4 mm (5.1 in).

Wettest day (Rx1day) at San Bartolome Ayautla by year
Year	Wettest day (Rx1day)
1955	98.8 mm (3.9 in)
1956	110.2 mm (4.3 in)
1957	131.1 mm (5.2 in)
1958	217.4 mm (8.6 in)
1959	238.0 mm (9.4 in)
1960	184.9 mm (7.3 in)
1961	111.8 mm (4.4 in)
1962	127.8 mm (5.0 in)
1963	98.3 mm (3.9 in)
1964	110.0 mm (4.3 in)
1965	192.8 mm (7.6 in)
1966	171.5 mm (6.8 in)
1967	216.7 mm (8.5 in)
1968	110.0 mm (4.3 in)
1969	99.8 mm (3.9 in)
1970	101.9 mm (4.0 in)
1971	119.9 mm (4.7 in)
1972	220.0 mm (8.7 in)
1973	235.0 mm (9.3 in)
1974	120.9 mm (4.8 in)
1975	179.8 mm (7.1 in)
1976	168.9 mm (6.6 in)
1977	89.9 mm (3.5 in)
1978	140.0 mm (5.5 in)
1979	140.0 mm (5.5 in)
1980	130.8 mm (5.1 in)
1981	128.0 mm (5.0 in)
1982	104.9 mm (4.1 in)
1983	126.0 mm (5.0 in)
1984	140.0 mm (5.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at San Bartolome Ayautla, 1955 to 1984. The record is 564.4 mm (22.2 in) in 1975, marked on the chart; the median year is 287.7 mm (11.3 in).

Wettest five days (Rx5day) at San Bartolome Ayautla by year
Year	Wettest five days (Rx5day)
1955	256.8 mm (10.1 in)
1956	232.2 mm (9.1 in)
1957	219.8 mm (8.7 in)
1958	532.5 mm (21.0 in)
1959	267.7 mm (10.5 in)
1960	378.0 mm (14.9 in)
1961	307.2 mm (12.1 in)
1962	295.0 mm (11.6 in)
1963	286.1 mm (11.3 in)
1964	231.6 mm (9.1 in)
1965	289.3 mm (11.4 in)
1966	279.7 mm (11.0 in)
1967	345.5 mm (13.6 in)
1968	229.2 mm (9.0 in)
1969	359.2 mm (14.1 in)
1970	261.4 mm (10.3 in)
1971	202.2 mm (8.0 in)
1972	263.7 mm (10.4 in)
1973	400.4 mm (15.8 in)
1974	313.5 mm (12.3 in)
1975	564.4 mm (22.2 in)
1976	388.4 mm (15.3 in)
1977	232.7 mm (9.2 in)
1978	296.2 mm (11.7 in)
1979	343.3 mm (13.5 in)
1980	400.3 mm (15.8 in)
1981	353.1 mm (13.9 in)
1982	238.6 mm (9.4 in)
1983	282.2 mm (11.1 in)
1984	284.0 mm (11.2 in)

Longest dry spell (CDD)

The longest dry spell of the year at San Bartolome Ayautla, 1955 to 1984. The record is 46 days in 1981, marked on the chart; the median year is 17 days.

Longest dry spell (CDD) at San Bartolome Ayautla by year
Year	Longest dry spell (CDD)
1955	8 days
1956	17 days
1957	25 days
1958	14 days
1959	7 days
1960	13 days
1961	19 days
1962	21 days
1963	16 days
1964	23 days
1965	17 days
1966	12 days
1967	14 days
1968	13 days
1969	17 days
1970	25 days
1971	23 days
1972	16 days
1973	21 days
1974	18 days
1975	38 days
1976	16 days
1977	13 days
1978	20 days
1979	9 days
1980	16 days
1981	46 days
1982	18 days
1983	25 days
1984	14 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 San Bartolome Ayautla standing records by year: CSV or JSON. Field meanings are on the data page.
Data for San Bartolome Ayautla 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).