Santa Maria Alotepec Weather Records (MXN00020001)

Record envelope, standing records and threshold days for Santa Maria Alotepec (MXN00020001), Mexico, with 34 years of record.

Key Facts for Santa Maria Alotepec

Santa Maria Alotepec (MXN00020001) is a weather station in Mexico at 17.07 latitude and -95.87 longitude, 2,444 m (8,018 ft) above sea level.
The station reports from 1950 to 1983, 34 years of record.
1,464 records set at Santa Maria Alotepec still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Santa Maria Alotepec tied a daily record high maximum temperature of 30.0 C (86.0 F) on 27 June 1983.

About the Station

Location: Mexico, 17.07 latitude, -95.87 longitude.
Elevation: 2,444 m (8,018 ft).
Period of record: 1950 to 1983, 34 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 Santa Maria Alotepec. 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 Santa Maria Alotepec, 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)	1.1 C (34.0 F)	n/a	n/a
Feb	33.9 C (93.0 F)	2.8 C (37.0 F)	n/a	n/a
Mar	34.4 C (93.9 F)	5.0 C (41.0 F)	n/a	n/a
Apr	35.0 C (95.0 F)	6.7 C (44.1 F)	n/a	n/a
May	37.8 C (100.0 F)	8.9 C (48.0 F)	n/a	n/a
Jun	37.2 C (99.0 F)	7.2 C (45.0 F)	n/a	n/a
Jul	31.7 C (89.1 F)	8.9 C (48.0 F)	n/a	n/a
Aug	30.6 C (87.1 F)	8.9 C (48.0 F)	n/a	n/a
Sep	29.4 C (84.9 F)	7.8 C (46.0 F)	n/a	n/a
Oct	30.0 C (86.0 F)	5.0 C (41.0 F)	n/a	n/a
Nov	31.1 C (88.0 F)	2.8 C (37.0 F)	n/a	n/a
Dec	28.3 C (82.9 F)	0.6 C (33.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Santa Maria Alotepec still stand. 1982 holds the most, with 409.

Standing records at Santa Maria Alotepec by the year they were set
Year set	Standing records
1950	22
1951	10
1952	28
1953	43
1954	32
1955	39
1956	32
1957	38
1958	34
1959	44
1960	45
1961	42
1962	94
1963	72
1964	59
1965	29
1966	40
1967	18
1968	25
1969	15
1970	25
1971	28
1972	12
1973	23
1974	14
1975	30
1976	5
1977	36
1978	28
1979	25
1980	35
1981	5
1982	409
1983	28

All-Time Record Progression

1 new records

1 all-time records were set at Santa Maria Alotepec between 23 December 1982 and 23 December 1982. Each dot is a new record.

Wettest Day of Each Month

Oct: 296.9 mm (11.7 in)

The wettest day on record for each calendar month at Santa Maria Alotepec. The most was 296.9 mm (11.7 in) on 2 October 1962.

Record daily precipitation for each month at Santa Maria Alotepec
Month	Record daily precipitation (mm)	Date
Jan	90.9 mm (3.6 in)	30 January 1972
Feb	54.9 mm (2.2 in)	6 February 1967
Mar	54.4 mm (2.1 in)	21 March 1956
Apr	71.9 mm (2.8 in)	8 April 1954
May	90.9 mm (3.6 in)	30 May 1951
Jun	168.9 mm (6.6 in)	11 June 1950
Jul	284.0 mm (11.2 in)	2 July 1963
Aug	177.8 mm (7.0 in)	31 August 1973
Sep	190.8 mm (7.5 in)	21 September 1974
Oct	296.9 mm (11.7 in)	2 October 1962
Nov	75.9 mm (3.0 in)	1 November 1961
Dec	48.8 mm (1.9 in)	31 December 1979

Period of Record Coverage

1950 to 1983

34 years of record at Santa Maria Alotepec, 1950 to 1983. 6 years have data for under 90 percent of days and are left out of rankings: 1950, 1951, 1967, 1969, 1981, 1983.

Days with data per year at Santa Maria Alotepec
Year	Days with data	Share of year	Complete
1950	242	66%	No
1951	141	39%	No
1952	355	97%	Yes
1953	357	98%	Yes
1954	359	98%	Yes
1955	357	98%	Yes
1956	364	99%	Yes
1957	360	99%	Yes
1958	363	99%	Yes
1959	363	99%	Yes
1960	358	98%	Yes
1961	355	97%	Yes
1962	351	96%	Yes
1963	357	98%	Yes
1964	357	98%	Yes
1965	363	99%	Yes
1966	361	99%	Yes
1967	243	67%	No
1968	342	93%	Yes
1969	310	85%	No
1970	364	100%	Yes
1971	364	100%	Yes
1972	343	94%	Yes
1973	348	95%	Yes
1974	364	100%	Yes
1975	350	96%	Yes
1976	366	100%	Yes
1977	334	92%	Yes
1978	363	99%	Yes
1979	362	99%	Yes
1980	361	99%	Yes
1981	190	52%	No
1982	355	97%	Yes
1983	181	50%	No

Latest Records

Latest records at Santa Maria Alotepec
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 June 1983	Santa Maria Alotepec, MX	daily high max (Tie)	30.0 C (86.0 F)	tie	0 years	0 of 100 (Routine)
21 June 1983	Santa Maria Alotepec, MX	daily high max	33.9 C (93.0 F)	7.2 C (13.0 F)	0 years	25 of 100 (Routine)
20 June 1983	Santa Maria Alotepec, MX	daily high max	33.9 C (93.0 F)	6.7 C (12.1 F)	0 years	24 of 100 (Routine)
19 June 1983	Santa Maria Alotepec, MX	daily high max	34.4 C (93.9 F)	6.6 C (11.9 F)	0 years	23 of 100 (Routine)
18 June 1983	Santa Maria Alotepec, MX	daily high max	28.9 C (84.0 F)	0.6 C (1.1 F)	17 years	9 of 100 (Routine)
16 June 1983	Santa Maria Alotepec, MX	daily high max	30.0 C (86.0 F)	1.1 C (2.0 F)	8 years	8 of 100 (Routine)
15 June 1983	Santa Maria Alotepec, MX	daily high max	30.6 C (87.1 F)	0.6 C (1.1 F)	28 years	12 of 100 (Routine)
13 June 1983	Santa Maria Alotepec, MX	daily high max	36.1 C (97.0 F)	5.5 C (9.9 F)	0 years	20 of 100 (Routine)
12 June 1983	Santa Maria Alotepec, MX	daily high max	35.0 C (95.0 F)	8.3 C (14.9 F)	8 years	31 of 100 (Routine)
11 June 1983	Santa Maria Alotepec, MX	daily high max (Tie)	35.0 C (95.0 F)	tie	0 years	0 of 100 (Routine)
10 June 1983	Santa Maria Alotepec, MX	daily low min (Tie)	10.6 C (51.1 F)	tie	20 years	2 of 100 (Routine)
5 June 1983	Santa Maria Alotepec, MX	daily high max	30.6 C (87.1 F)	1.2 C (2.2 F)	0 years	6 of 100 (Routine)
1 June 1983	Santa Maria Alotepec, MX	daily high max	35.0 C (95.0 F)	1.7 C (3.1 F)	0 years	8 of 100 (Routine)
28 May 1983	Santa Maria Alotepec, MX	daily rain	64.8 mm (2.6 in)	25.9 mm (1.0 in)	4 years	19 of 100 (Routine)
21 May 1983	Santa Maria Alotepec, MX	daily high max (Tie)	30.0 C (86.0 F)	tie	25 years	2 of 100 (Routine)
16 May 1983	Santa Maria Alotepec, MX	daily high min	20.6 C (69.1 F)	0.6 C (1.1 F)	4 years	6 of 100 (Routine)
15 May 1983	Santa Maria Alotepec, MX	daily high min	21.1 C (70.0 F)	1.7 C (3.1 F)	21 years	15 of 100 (Routine)
14 May 1983	Santa Maria Alotepec, MX	daily high min (Tie)	20.0 C (68.0 F)	tie	29 years	2 of 100 (Routine)
13 May 1983	Santa Maria Alotepec, MX	daily high min (Tie)	20.0 C (68.0 F)	tie	29 years	2 of 100 (Routine)
12 May 1983	Santa Maria Alotepec, MX	daily high min (Tie)	19.4 C (66.9 F)	tie	25 years	2 of 100 (Routine)

Climate Trend

24 complete years, 1952 to 1982

One stripe for each of 24 complete years at Santa Maria Alotepec, 1952 to 1982. Blue stripes are years cooler than the station's own mean of 17.4 C (63.3 F); red stripes are warmer. The coolest year was 1966, at 16.3 C (61.3 F), and the warmest was 1982, at 18.8 C (65.9 F). The strongest colour marks a difference of 1.5 C (2.7 F).

Annual mean temperature at Santa Maria Alotepec as warming stripes, 1952 to 1982
Year	Annual mean temperature	Difference from the station mean
1952	17.0 C	-0.39 C
1953	17.7 C	+0.28 C
1954	16.8 C	-0.61 C
1955	17.2 C	-0.26 C
1956	16.8 C	-0.64 C
1957	17.6 C	+0.16 C
1958	17.4 C	+0.03 C
1959	17.0 C	-0.37 C
1960	17.1 C	-0.32 C
1961	17.1 C	-0.28 C
1962	16.8 C	-0.59 C
1963	16.9 C	-0.52 C
1964	17.1 C	-0.29 C
1965	17.6 C	+0.22 C
1966	16.3 C	-1.15 C
1970	18.0 C	+0.56 C
1971	18.5 C	+1.07 C
1973	17.9 C	+0.49 C
1974	17.4 C	+0.02 C
1976	17.1 C	-0.36 C
1978	18.0 C	+0.60 C
1979	17.6 C	+0.17 C
1980	18.1 C	+0.73 C
1982	18.8 C	+1.43 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

1950 to 1983

Yearly extremes at Santa Maria Alotepec: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	37.8 C (100.0 F)	1971	30.6 C (87.1 F)	34
Coldest night (TNn)	0.6 C (33.1 F)	1982	5.0 C (41.0 F)	34
Wettest day (Rx1day)	296.9 mm (11.7 in)	1962	121.8 mm (4.8 in)	34
Wettest five days (Rx5day)	506.5 mm (19.9 in)	1978	276.0 mm (10.9 in)	34
Longest dry spell (CDD)	101 days	1982	30 days	34

Hottest day (TXx)

The hottest day of the year at Santa Maria Alotepec, 1950 to 1983. The record is 37.8 C (100.0 F) in 1971, marked on the chart; the median year is 30.6 C (87.1 F).

Hottest day (TXx) at Santa Maria Alotepec by year
Year	Hottest day (TXx)
1950	27.8 C (82.0 F)
1951	28.9 C (84.0 F)
1952	28.9 C (84.0 F)
1953	32.8 C (91.0 F)
1954	30.6 C (87.1 F)
1955	31.1 C (88.0 F)
1956	27.8 C (82.0 F)
1957	33.3 C (91.9 F)
1958	30.0 C (86.0 F)
1959	28.3 C (82.9 F)
1960	30.0 C (86.0 F)
1961	30.0 C (86.0 F)
1962	32.2 C (90.0 F)
1963	30.0 C (86.0 F)
1964	29.4 C (84.9 F)
1965	32.8 C (91.0 F)
1966	27.2 C (81.0 F)
1967	30.6 C (87.1 F)
1968	30.0 C (86.0 F)
1969	27.2 C (81.0 F)
1970	31.7 C (89.1 F)
1971	37.8 C (100.0 F)
1972	32.8 C (91.0 F)
1973	31.7 C (89.1 F)
1974	31.7 C (89.1 F)
1975	31.7 C (89.1 F)
1976	30.6 C (87.1 F)
1977	30.0 C (86.0 F)
1978	31.7 C (89.1 F)
1979	30.0 C (86.0 F)
1980	30.6 C (87.1 F)
1981	32.2 C (90.0 F)
1982	37.2 C (99.0 F)
1983	36.1 C (97.0 F)

Coldest night (TNn)

The coldest night of the year at Santa Maria Alotepec, 1950 to 1983. The record is 0.6 C (33.1 F) in 1982, marked on the chart; the median year is 5.0 C (41.0 F).

Coldest night (TNn) at Santa Maria Alotepec by year
Year	Coldest night (TNn)
1950	7.8 C (46.0 F)
1951	5.6 C (42.1 F)
1952	3.9 C (39.0 F)
1953	1.1 C (34.0 F)
1954	6.1 C (43.0 F)
1955	4.4 C (39.9 F)
1956	6.1 C (43.0 F)
1957	6.1 C (43.0 F)
1958	4.4 C (39.9 F)
1959	7.2 C (45.0 F)
1960	4.4 C (39.9 F)
1961	5.6 C (42.1 F)
1962	4.4 C (39.9 F)
1963	3.3 C (37.9 F)
1964	6.7 C (44.1 F)
1965	5.0 C (41.0 F)
1966	2.8 C (37.0 F)
1967	2.8 C (37.0 F)
1968	6.7 C (44.1 F)
1969	8.9 C (48.0 F)
1970	5.0 C (41.0 F)
1971	1.7 C (35.1 F)
1972	6.7 C (44.1 F)
1973	5.6 C (42.1 F)
1974	7.8 C (46.0 F)
1975	5.0 C (41.0 F)
1976	5.0 C (41.0 F)
1977	3.9 C (39.0 F)
1978	5.6 C (42.1 F)
1979	3.9 C (39.0 F)
1980	5.6 C (42.1 F)
1981	8.9 C (48.0 F)
1982	0.6 C (33.1 F)
1983	5.0 C (41.0 F)

Wettest day (Rx1day)

The wettest day of the year at Santa Maria Alotepec, 1950 to 1983. The record is 296.9 mm (11.7 in) in 1962, marked on the chart; the median year is 121.8 mm (4.8 in).

Wettest day (Rx1day) at Santa Maria Alotepec by year
Year	Wettest day (Rx1day)
1950	168.9 mm (6.6 in)
1951	115.8 mm (4.6 in)
1952	134.1 mm (5.3 in)
1953	79.2 mm (3.1 in)
1954	99.3 mm (3.9 in)
1955	120.7 mm (4.8 in)
1956	127.0 mm (5.0 in)
1957	82.3 mm (3.2 in)
1958	65.0 mm (2.6 in)
1959	46.5 mm (1.8 in)
1960	84.3 mm (3.3 in)
1961	164.8 mm (6.5 in)
1962	296.9 mm (11.7 in)
1963	284.0 mm (11.2 in)
1964	95.8 mm (3.8 in)
1965	128.8 mm (5.1 in)
1966	155.7 mm (6.1 in)
1967	114.8 mm (4.5 in)
1968	159.8 mm (6.3 in)
1969	176.3 mm (6.9 in)
1970	69.9 mm (2.8 in)
1971	128.8 mm (5.1 in)
1972	113.8 mm (4.5 in)
1973	177.8 mm (7.0 in)
1974	190.8 mm (7.5 in)
1975	158.0 mm (6.2 in)
1976	122.9 mm (4.8 in)
1977	79.8 mm (3.1 in)
1978	122.9 mm (4.8 in)
1979	179.8 mm (7.1 in)
1980	102.9 mm (4.1 in)
1981	50.0 mm (2.0 in)
1982	43.4 mm (1.7 in)
1983	64.8 mm (2.6 in)

Wettest five days (Rx5day)

The wettest five days of the year at Santa Maria Alotepec, 1950 to 1983. The record is 506.5 mm (19.9 in) in 1978, marked on the chart; the median year is 276.0 mm (10.9 in).

Wettest five days (Rx5day) at Santa Maria Alotepec by year
Year	Wettest five days (Rx5day)
1950	277.7 mm (10.9 in)
1951	273.0 mm (10.7 in)
1952	294.9 mm (11.6 in)
1953	142.3 mm (5.6 in)
1954	203.7 mm (8.0 in)
1955	334.7 mm (13.2 in)
1956	265.2 mm (10.4 in)
1957	216.2 mm (8.5 in)
1958	166.8 mm (6.6 in)
1959	100.1 mm (3.9 in)
1960	178.3 mm (7.0 in)
1961	241.2 mm (9.5 in)
1962	431.3 mm (17.0 in)
1963	382.1 mm (15.0 in)
1964	205.3 mm (8.1 in)
1965	274.3 mm (10.8 in)
1966	352.3 mm (13.9 in)
1967	282.5 mm (11.1 in)
1968	425.8 mm (16.8 in)
1969	375.0 mm (14.8 in)
1970	208.8 mm (8.2 in)
1971	285.7 mm (11.2 in)
1972	252.6 mm (9.9 in)
1973	366.3 mm (14.4 in)
1974	347.3 mm (13.7 in)
1975	413.6 mm (16.3 in)
1976	399.3 mm (15.7 in)
1977	221.0 mm (8.7 in)
1978	506.5 mm (19.9 in)
1979	449.4 mm (17.7 in)
1980	346.4 mm (13.6 in)
1981	74.9 mm (2.9 in)
1982	89.4 mm (3.5 in)
1983	151.5 mm (6.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Santa Maria Alotepec, 1950 to 1983. The record is 101 days in 1982, marked on the chart; the median year is 30 days.

Longest dry spell (CDD) at Santa Maria Alotepec by year
Year	Longest dry spell (CDD)
1950	21 days
1951	38 days
1952	30 days
1953	15 days
1954	18 days
1955	15 days
1956	19 days
1957	51 days
1958	23 days
1959	45 days
1960	47 days
1961	33 days
1962	30 days
1963	38 days
1964	17 days
1965	32 days
1966	16 days
1967	26 days
1968	20 days
1969	18 days
1970	33 days
1971	46 days
1972	27 days
1973	34 days
1974	58 days
1975	20 days
1976	25 days
1977	54 days
1978	47 days
1979	21 days
1980	40 days
1981	23 days
1982	101 days
1983	47 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 Santa Maria Alotepec standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Santa Maria Alotepec 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).