Tepecoacuilco Weather Records (MXN00012085)

Record envelope, standing records and threshold days for Tepecoacuilco (MXN00012085), Mexico, with 44 years of record.

Key Facts for Tepecoacuilco

Tepecoacuilco (MXN00012085) is a weather station in Mexico at 18.28 latitude and -99.47 longitude, 842 m (2,762 ft) above sea level.
The station reports from 1928 to 1971, 44 years of record.
1,464 records set at Tepecoacuilco still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Mexico, 18.28 latitude, -99.47 longitude.
Elevation: 842 m (2,762 ft).
Period of record: 1928 to 1971, 44 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 Tepecoacuilco. 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 Tepecoacuilco, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	38.9 C (102.0 F)	2.2 C (36.0 F)	n/a	n/a
Feb	41.1 C (106.0 F)	5.6 C (42.1 F)	n/a	n/a
Mar	42.8 C (109.0 F)	8.9 C (48.0 F)	n/a	n/a
Apr	45.6 C (114.1 F)	7.8 C (46.0 F)	n/a	n/a
May	45.0 C (113.0 F)	10.6 C (51.1 F)	n/a	n/a
Jun	43.9 C (111.0 F)	10.0 C (50.0 F)	n/a	n/a
Jul	45.0 C (113.0 F)	13.9 C (57.0 F)	n/a	n/a
Aug	40.0 C (104.0 F)	13.9 C (57.0 F)	n/a	n/a
Sep	38.9 C (102.0 F)	13.9 C (57.0 F)	n/a	n/a
Oct	41.1 C (106.0 F)	8.9 C (48.0 F)	n/a	n/a
Nov	39.4 C (102.9 F)	3.9 C (39.0 F)	n/a	n/a
Dec	38.9 C (102.0 F)	0.6 C (33.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Tepecoacuilco still stand. 1932 holds the most, with 262.

Standing records at Tepecoacuilco by the year they were set
Year set	Standing records
1928	48
1929	3
1931	177
1932	262
1933	97
1934	70
1936	5
1945	49
1946	111
1947	88
1948	45
1949	23
1950	11
1951	3
1952	15
1953	8
1956	25
1957	21
1958	50
1959	30
1960	26
1961	34
1962	24
1963	22
1964	28
1965	28
1966	27
1967	22
1968	36
1969	29
1970	32
1971	15

Wettest Day of Each Month

Sep: 84.8 mm (3.3 in)

The wettest day on record for each calendar month at Tepecoacuilco. The most was 84.8 mm (3.3 in) on 16 September 1928.

Record daily precipitation for each month at Tepecoacuilco
Month	Record daily precipitation (mm)	Date
Jan	10.4 mm (0.4 in)	21 January 1961
Feb	30.0 mm (1.2 in)	20 February 1965
Mar	6.9 mm (0.27 in)	20 March 1945
Apr	19.8 mm (0.8 in)	23 April 1959
May	48.3 mm (1.9 in)	8 May 1948
Jun	83.8 mm (3.3 in)	3 June 1959
Jul	79.8 mm (3.1 in)	8 July 1959
Aug	81.8 mm (3.2 in)	26 August 1969
Sep	84.8 mm (3.3 in)	16 September 1928
Oct	57.4 mm (2.3 in)	21 October 1948
Nov	34.8 mm (1.4 in)	4 November 1952
Dec	8.9 mm (0.35 in)	14 December 1958

Period of Record Coverage

1928 to 1971

33 years of record at Tepecoacuilco, 1928 to 1971. 9 years have data for under 90 percent of days and are left out of rankings: 1928, 1929, 1933, 1934, 1936, 1951, 1952, 1953 and others.

Days with data per year at Tepecoacuilco
Year	Days with data	Share of year	Complete
1928	153	42%	No
1929	31	8%	No
1931	365	100%	Yes
1932	366	100%	Yes
1933	242	66%	No
1934	123	34%	No
1936	61	17%	No
1945	365	100%	Yes
1946	365	100%	Yes
1947	365	100%	Yes
1948	366	100%	Yes
1949	365	100%	Yes
1950	365	100%	Yes
1951	151	41%	No
1952	153	42%	No
1953	120	33%	No
1954	62	17%	No
1956	358	98%	Yes
1957	365	100%	Yes
1958	364	100%	Yes
1959	356	98%	Yes
1960	366	100%	Yes
1961	360	99%	Yes
1962	360	99%	Yes
1963	348	95%	Yes
1964	361	99%	Yes
1965	356	98%	Yes
1966	348	95%	Yes
1967	356	98%	Yes
1968	359	98%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	345	95%	Yes

Latest Records

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

Climate Trend

23 complete years, 1931 to 1970

One stripe for each of 23 complete years at Tepecoacuilco, 1931 to 1970. Blue stripes are years cooler than the station's own mean of 26.1 C (78.9 F); red stripes are warmer. The coolest year was 1968, at 25.2 C (77.3 F), and the warmest was 1947, at 27.7 C (81.9 F). The strongest colour marks a difference of 1.7 C (3.1 F).

Annual mean temperature at Tepecoacuilco as warming stripes, 1931 to 1970
Year	Annual mean temperature	Difference from the station mean
1931	26.2 C	+0.09 C
1932	25.5 C	-0.54 C
1945	25.4 C	-0.71 C
1946	27.0 C	+0.95 C
1947	27.7 C	+1.65 C
1948	27.4 C	+1.30 C
1949	26.8 C	+0.69 C
1950	26.5 C	+0.39 C
1956	25.7 C	-0.41 C
1957	26.4 C	+0.31 C
1958	25.6 C	-0.44 C
1959	25.8 C	-0.24 C
1960	26.4 C	+0.27 C
1961	26.0 C	-0.08 C
1962	26.5 C	+0.38 C
1963	25.9 C	-0.17 C
1964	25.9 C	-0.14 C
1965	25.8 C	-0.29 C
1966	25.5 C	-0.56 C
1967	25.4 C	-0.65 C
1968	25.2 C	-0.89 C
1969	26.0 C	-0.13 C
1970	25.2 C	-0.86 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

1928 to 1971

Yearly extremes at Tepecoacuilco: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	45.6 C (114.1 F)	1953	40.6 C (105.1 F)	33
Coldest night (TNn)	0.6 C (33.1 F)	1933	10.0 C (50.0 F)	32
Wettest day (Rx1day)	84.8 mm (3.3 in)	1928	50.3 mm (2.0 in)	33
Wettest five days (Rx5day)	190.6 mm (7.5 in)	1969	101.2 mm (4.0 in)	33
Longest dry spell (CDD)	173 days	1971	89 days	33

Hottest day (TXx)

The hottest day of the year at Tepecoacuilco, 1928 to 1971. The record is 45.6 C (114.1 F) in 1953, marked on the chart; the median year is 40.6 C (105.1 F).

Hottest day (TXx) at Tepecoacuilco by year
Year	Hottest day (TXx)
1928	35.6 C (96.1 F)
1929	32.8 C (91.0 F)
1931	45.0 C (113.0 F)
1932	43.9 C (111.0 F)
1933	45.0 C (113.0 F)
1934	45.0 C (113.0 F)
1936	45.0 C (113.0 F)
1945	38.9 C (102.0 F)
1946	41.7 C (107.1 F)
1947	43.9 C (111.0 F)
1948	41.7 C (107.1 F)
1949	40.6 C (105.1 F)
1950	40.6 C (105.1 F)
1951	41.7 C (107.1 F)
1952	35.6 C (96.1 F)
1953	45.6 C (114.1 F)
1954	37.8 C (100.0 F)
1956	42.8 C (109.0 F)
1957	40.6 C (105.1 F)
1958	41.7 C (107.1 F)
1959	40.0 C (104.0 F)
1960	41.7 C (107.1 F)
1961	41.7 C (107.1 F)
1962	40.6 C (105.1 F)
1963	40.6 C (105.1 F)
1964	40.6 C (105.1 F)
1965	40.0 C (104.0 F)
1966	40.0 C (104.0 F)
1967	38.9 C (102.0 F)
1968	38.9 C (102.0 F)
1969	38.9 C (102.0 F)
1970	37.8 C (100.0 F)
1971	38.9 C (102.0 F)

Coldest night (TNn)

The coldest night of the year at Tepecoacuilco, 1928 to 1971. The record is 0.6 C (33.1 F) in 1933, marked on the chart; the median year is 10.0 C (50.0 F).

Coldest night (TNn) at Tepecoacuilco by year
Year	Coldest night (TNn)
1928	16.7 C (62.1 F)
1929	17.8 C (64.0 F)
1931	5.0 C (41.0 F)
1932	3.9 C (39.0 F)
1933	0.6 C (33.1 F)
1934	6.7 C (44.1 F)
1936	8.9 C (48.0 F)
1945	10.0 C (50.0 F)
1946	9.4 C (48.9 F)
1947	11.7 C (53.1 F)
1948	10.6 C (51.1 F)
1949	10.0 C (50.0 F)
1950	7.8 C (46.0 F)
1951	9.4 C (48.9 F)
1952	11.7 C (53.1 F)
1953	n/a
1954	15.0 C (59.0 F)
1956	2.2 C (36.0 F)
1957	10.0 C (50.0 F)
1958	10.6 C (51.1 F)
1959	10.0 C (50.0 F)
1960	10.6 C (51.1 F)
1961	7.8 C (46.0 F)
1962	11.1 C (52.0 F)
1963	11.7 C (53.1 F)
1964	10.6 C (51.1 F)
1965	10.6 C (51.1 F)
1966	10.0 C (50.0 F)
1967	7.8 C (46.0 F)
1968	10.6 C (51.1 F)
1969	10.0 C (50.0 F)
1970	11.7 C (53.1 F)
1971	10.0 C (50.0 F)

Wettest day (Rx1day)

The wettest day of the year at Tepecoacuilco, 1928 to 1971. The record is 84.8 mm (3.3 in) in 1928, marked on the chart; the median year is 50.3 mm (2.0 in).

Wettest day (Rx1day) at Tepecoacuilco by year
Year	Wettest day (Rx1day)
1928	84.8 mm (3.3 in)
1929	0.0 mm (0.00 in)
1931	65.8 mm (2.6 in)
1932	39.9 mm (1.6 in)
1933	20.8 mm (0.8 in)
1934	62.0 mm (2.4 in)
1936	0.0 mm (0.00 in)
1945	28.4 mm (1.1 in)
1946	53.1 mm (2.1 in)
1947	63.5 mm (2.5 in)
1948	63.0 mm (2.5 in)
1949	63.8 mm (2.5 in)
1950	58.9 mm (2.3 in)
1951	8.4 mm (0.33 in)
1952	34.8 mm (1.4 in)
1953	29.0 mm (1.1 in)
1954	76.5 mm (3.0 in)
1956	72.9 mm (2.9 in)
1957	7.4 mm (0.29 in)
1958	25.9 mm (1.0 in)
1959	83.8 mm (3.3 in)
1960	50.3 mm (2.0 in)
1961	73.9 mm (2.9 in)
1962	41.9 mm (1.6 in)
1963	59.9 mm (2.4 in)
1964	51.8 mm (2.0 in)
1965	63.0 mm (2.5 in)
1966	21.8 mm (0.9 in)
1967	49.8 mm (2.0 in)
1968	47.0 mm (1.9 in)
1969	81.8 mm (3.2 in)
1970	37.8 mm (1.5 in)
1971	1.8 mm (0.07 in)

Wettest five days (Rx5day)

The wettest five days of the year at Tepecoacuilco, 1928 to 1971. The record is 190.6 mm (7.5 in) in 1969, marked on the chart; the median year is 101.2 mm (4.0 in).

Wettest five days (Rx5day) at Tepecoacuilco by year
Year	Wettest five days (Rx5day)
1928	174.5 mm (6.9 in)
1929	0.0 mm (0.00 in)
1931	139.4 mm (5.5 in)
1932	126.3 mm (5.0 in)
1933	90.1 mm (3.5 in)
1934	105.2 mm (4.1 in)
1936	0.0 mm (0.00 in)
1945	68.1 mm (2.7 in)
1946	106.0 mm (4.2 in)
1947	148.3 mm (5.8 in)
1948	77.5 mm (3.1 in)
1949	101.2 mm (4.0 in)
1950	111.8 mm (4.4 in)
1951	10.7 mm (0.4 in)
1952	67.6 mm (2.7 in)
1953	89.4 mm (3.5 in)
1954	112.6 mm (4.4 in)
1956	146.4 mm (5.8 in)
1957	16.1 mm (0.6 in)
1958	62.9 mm (2.5 in)
1959	112.5 mm (4.4 in)
1960	90.2 mm (3.6 in)
1961	140.5 mm (5.5 in)
1962	93.5 mm (3.7 in)
1963	105.3 mm (4.1 in)
1964	107.5 mm (4.2 in)
1965	101.1 mm (4.0 in)
1966	38.1 mm (1.5 in)
1967	72.4 mm (2.9 in)
1968	135.6 mm (5.3 in)
1969	190.6 mm (7.5 in)
1970	119.4 mm (4.7 in)
1971	1.8 mm (0.07 in)

Longest dry spell (CDD)

The longest dry spell of the year at Tepecoacuilco, 1928 to 1971. The record is 173 days in 1971, marked on the chart; the median year is 89 days.

Longest dry spell (CDD) at Tepecoacuilco by year
Year	Longest dry spell (CDD)
1928	13 days
1929	31 days
1931	135 days
1932	164 days
1933	151 days
1934	89 days
1936	61 days
1945	78 days
1946	93 days
1947	124 days
1948	80 days
1949	128 days
1950	110 days
1951	78 days
1952	50 days
1953	143 days
1954	5 days
1956	91 days
1957	98 days
1958	81 days
1959	106 days
1960	127 days
1961	68 days
1962	101 days
1963	78 days
1964	123 days
1965	69 days
1966	58 days
1967	89 days
1968	71 days
1969	75 days
1970	136 days
1971	173 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 Tepecoacuilco standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Tepecoacuilco 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 2026-10-16 (16 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).