Huamuxtitlan (Smn) Weather Records (MXN00012044)

Record envelope, standing records and threshold days for Huamuxtitlan (Smn) (MXN00012044), Mexico, with 46 years of record.

Key Facts for Huamuxtitlan (Smn)

Huamuxtitlan (Smn) (MXN00012044) is a weather station in Mexico at 17.80 latitude and -98.57 longitude, 1,125 m (3,690 ft) above sea level.
The station reports from 1942 to 1987, 46 years of record.
1,464 records set at Huamuxtitlan (Smn) still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Huamuxtitlan (Smn) set a daily record precipitation of 19.8 mm (0.8 in) on 25 April 1987.

About the Station

Location: Mexico, 17.80 latitude, -98.57 longitude.
Elevation: 1,125 m (3,690 ft).
Period of record: 1942 to 1987, 46 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 Huamuxtitlan (Smn). 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 Huamuxtitlan (Smn), with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	28.9 C (84.0 F)	3.9 C (39.0 F)	n/a	n/a
Feb	27.8 C (82.0 F)	3.9 C (39.0 F)	n/a	n/a
Mar	27.8 C (82.0 F)	5.0 C (41.0 F)	n/a	n/a
Apr	28.9 C (84.0 F)	5.0 C (41.0 F)	n/a	n/a
May	30.0 C (86.0 F)	8.9 C (48.0 F)	n/a	n/a
Jun	28.9 C (84.0 F)	7.8 C (46.0 F)	n/a	n/a
Jul	27.8 C (82.0 F)	6.7 C (44.1 F)	n/a	n/a
Aug	27.8 C (82.0 F)	6.7 C (44.1 F)	n/a	n/a
Sep	28.9 C (84.0 F)	6.7 C (44.1 F)	n/a	n/a
Oct	28.9 C (84.0 F)	3.9 C (39.0 F)	n/a	n/a
Nov	27.8 C (82.0 F)	5.0 C (41.0 F)	n/a	n/a
Dec	25.6 C (78.1 F)	3.9 C (39.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Huamuxtitlan (Smn) still stand. 1980 holds the most, with 256.

All-Time Record Progression

3 new records

3 all-time records were set at Huamuxtitlan (Smn) between 4 September 1978 and 28 August 1983. Each dot is a new record.

When Huamuxtitlan (Smn) set new all-time records
Date	Kind	Detail
1978-09-04	Record daily precipitation	Record daily precipitation 71.9 mm (2.8 in)
1978-09-28	Record daily precipitation	Record daily precipitation 72.9 mm (2.9 in)
1983-08-28	Record daily precipitation	Record daily precipitation 79.8 mm (3.1 in)

Wettest Day of Each Month

Aug: 79.8 mm (3.1 in)

The wettest day on record for each calendar month at Huamuxtitlan (Smn). The most was 79.8 mm (3.1 in) on 28 August 1983.

Record daily precipitation for each month at Huamuxtitlan (Smn)
Month	Record daily precipitation (mm)	Date
Jan	36.8 mm (1.4 in)	21 January 1965
Feb	33.8 mm (1.3 in)	22 February 1981
Mar	21.8 mm (0.9 in)	14 March 1983
Apr	41.9 mm (1.6 in)	11 April 1954
May	65.8 mm (2.6 in)	27 May 1976
Jun	69.9 mm (2.8 in)	19 June 1963
Jul	65.3 mm (2.6 in)	29 July 1945
Aug	79.8 mm (3.1 in)	28 August 1983
Sep	72.9 mm (2.9 in)	28 September 1978
Oct	69.9 mm (2.8 in)	10 October 1982
Nov	31.0 mm (1.2 in)	28 November 1962
Dec	30.5 mm (1.2 in)	14 December 1963

Period of Record Coverage

1978 to 1987

10 years of record at Huamuxtitlan (Smn), 1978 to 1987. 2 years have data for under 90 percent of days and are left out of rankings: 1978, 1987.

Days with data per year at Huamuxtitlan (Smn)
Year	Days with data	Share of year	Complete
1978	184	50%	No
1979	331	91%	Yes
1980	335	92%	Yes
1981	364	100%	Yes
1982	334	92%	Yes
1983	365	100%	Yes
1984	356	97%	Yes
1985	360	99%	Yes
1986	362	99%	Yes
1987	89	24%	No

Latest Records

Latest records at Huamuxtitlan (Smn)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
25 April 1987	Huamuxtitlan (Smn), MX	daily rain	19.8 mm (0.8 in)	10.9 mm (0.4 in)	10 years	17 of 100 (Routine)
19 April 1987	Huamuxtitlan (Smn), MX	daily rain	20.8 mm (0.8 in)	6.8 mm (0.27 in)	5 years	11 of 100 (Routine)
6 December 1986	Huamuxtitlan (Smn), MX	daily rain	4.8 mm (0.19 in)	4.8 mm (0.19 in)	44 years	20 of 100 (Routine)
5 December 1986	Huamuxtitlan (Smn), MX	daily rain	15.0 mm (0.6 in)	5.1 mm (0.20 in)	12 years	12 of 100 (Routine)
3 December 1986	Huamuxtitlan (Smn), MX	daily rain (Tie)	6.9 mm (0.27 in)	tie	28 years	3 of 100 (Routine)
18 November 1986	Huamuxtitlan (Smn), MX	daily rain	3.8 mm (0.15 in)	3.8 mm (0.15 in)	44 years	20 of 100 (Routine)
14 November 1986	Huamuxtitlan (Smn), MX	daily rain (Tie)	9.9 mm (0.39 in)	tie	24 years	2 of 100 (Routine)
13 November 1986	Huamuxtitlan (Smn), MX	daily rain	8.9 mm (0.35 in)	4.1 mm (0.16 in)	24 years	16 of 100 (Routine)
9 November 1986	Huamuxtitlan (Smn), MX	daily rain	14.0 mm (0.6 in)	4.1 mm (0.16 in)	3 years	9 of 100 (Routine)
22 October 1986	Huamuxtitlan (Smn), MX	daily rain	19.8 mm (0.8 in)	1.5 mm (0.06 in)	37 years	16 of 100 (Routine)
27 April 1986	Huamuxtitlan (Smn), MX	daily rain	14.0 mm (0.6 in)	12.2 mm (0.5 in)	17 years	20 of 100 (Routine)
5 September 1985	Huamuxtitlan (Smn), MX	daily rain	24.9 mm (1.0 in)	7.1 mm (0.28 in)	28 years	18 of 100 (Routine)
20 May 1985	Huamuxtitlan (Smn), MX	daily rain	30.0 mm (1.2 in)	9.7 mm (0.38 in)	36 years	23 of 100 (Routine)
10 December 1984	Huamuxtitlan (Smn), MX	daily rain	1.8 mm (0.07 in)	1.8 mm (0.07 in)	42 years	17 of 100 (Routine)
22 August 1984	Huamuxtitlan (Smn), MX	daily rain	30.0 mm (1.2 in)	13.2 mm (0.5 in)	23 years	22 of 100 (Routine)
4 May 1984	Huamuxtitlan (Smn), MX	daily rain	5.8 mm (0.23 in)	3.0 mm (0.12 in)	2 years	6 of 100 (Routine)
11 January 1984	Huamuxtitlan (Smn), MX	daily rain	24.9 mm (1.0 in)	24.9 mm (1.0 in)	38 years	20 of 100 (Routine)
9 November 1983	Huamuxtitlan (Smn), MX	daily rain	9.9 mm (0.39 in)	8.1 mm (0.32 in)	30 years	20 of 100 (Routine)
21 September 1983	Huamuxtitlan (Smn), MX	daily rain	42.9 mm (1.7 in)	7.1 mm (0.28 in)	17 years	16 of 100 (Routine)
18 September 1983	Huamuxtitlan (Smn), MX	daily rain	15.7 mm (0.6 in)	1.2 mm (0.05 in)	36 years	16 of 100 (Routine)

Extremes by Year

1942 to 1987

Yearly extremes at Huamuxtitlan (Smn): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	30.0 C (86.0 F)	1980	28.9 C (84.0 F)	10
Coldest night (TNn)	3.9 C (39.0 F)	1983	5.3 C (41.5 F)	10
Wettest day (Rx1day)	79.8 mm (3.1 in)	1983	47.0 mm (1.9 in)	45
Wettest five days (Rx5day)	178.2 mm (7.0 in)	1975	91.8 mm (3.6 in)	45
Longest dry spell (CDD)	130 days	1977	78 days	45

Hottest day (TXx)

The hottest day of the year at Huamuxtitlan (Smn), 1942 to 1987. The record is 30.0 C (86.0 F) in 1980, marked on the chart; the median year is 28.9 C (84.0 F).

Hottest day (TXx) at Huamuxtitlan (Smn) by year
Year	Hottest day (TXx)
1942	n/a
1943	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
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	27.8 C (82.0 F)
1979	28.9 C (84.0 F)
1980	30.0 C (86.0 F)
1981	28.9 C (84.0 F)
1982	30.0 C (86.0 F)
1983	28.9 C (84.0 F)
1984	28.9 C (84.0 F)
1985	28.9 C (84.0 F)
1986	27.8 C (82.0 F)
1987	27.8 C (82.0 F)

Coldest night (TNn)

The coldest night of the year at Huamuxtitlan (Smn), 1942 to 1987. The record is 3.9 C (39.0 F) in 1983, marked on the chart; the median year is 5.3 C (41.5 F).

Coldest night (TNn) at Huamuxtitlan (Smn) by year
Year	Coldest night (TNn)
1942	n/a
1943	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
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	7.8 C (46.0 F)
1979	5.6 C (42.1 F)
1980	6.7 C (44.1 F)
1981	5.6 C (42.1 F)
1982	5.6 C (42.1 F)
1983	3.9 C (39.0 F)
1984	3.9 C (39.0 F)
1985	3.9 C (39.0 F)
1986	3.9 C (39.0 F)
1987	5.0 C (41.0 F)

Wettest day (Rx1day)

The wettest day of the year at Huamuxtitlan (Smn), 1942 to 1987. The record is 79.8 mm (3.1 in) in 1983, marked on the chart; the median year is 47.0 mm (1.9 in).

Wettest day (Rx1day) at Huamuxtitlan (Smn) by year
Year	Wettest day (Rx1day)
1942	48.8 mm (1.9 in)
1943	52.3 mm (2.1 in)
1945	65.3 mm (2.6 in)
1946	47.0 mm (1.9 in)
1947	59.9 mm (2.4 in)
1948	55.4 mm (2.2 in)
1949	35.8 mm (1.4 in)
1950	42.4 mm (1.7 in)
1951	39.9 mm (1.6 in)
1952	54.9 mm (2.2 in)
1953	38.9 mm (1.5 in)
1954	41.9 mm (1.6 in)
1955	19.8 mm (0.8 in)
1956	45.0 mm (1.8 in)
1957	22.4 mm (0.9 in)
1958	30.0 mm (1.2 in)
1959	30.0 mm (1.2 in)
1960	25.4 mm (1.0 in)
1961	24.9 mm (1.0 in)
1962	31.0 mm (1.2 in)
1963	69.9 mm (2.8 in)
1964	47.8 mm (1.9 in)
1965	47.8 mm (1.9 in)
1966	59.9 mm (2.4 in)
1967	31.8 mm (1.3 in)
1968	43.9 mm (1.7 in)
1969	29.0 mm (1.1 in)
1970	69.9 mm (2.8 in)
1971	45.0 mm (1.8 in)
1972	49.8 mm (2.0 in)
1973	57.9 mm (2.3 in)
1974	52.8 mm (2.1 in)
1975	67.8 mm (2.7 in)
1976	65.8 mm (2.6 in)
1977	41.9 mm (1.6 in)
1978	72.9 mm (2.9 in)
1979	51.8 mm (2.0 in)
1980	71.9 mm (2.8 in)
1981	49.8 mm (2.0 in)
1982	69.9 mm (2.8 in)
1983	79.8 mm (3.1 in)
1984	45.0 mm (1.8 in)
1985	45.0 mm (1.8 in)
1986	24.9 mm (1.0 in)
1987	20.8 mm (0.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Huamuxtitlan (Smn), 1942 to 1987. The record is 178.2 mm (7.0 in) in 1975, marked on the chart; the median year is 91.8 mm (3.6 in).

Wettest five days (Rx5day) at Huamuxtitlan (Smn) by year
Year	Wettest five days (Rx5day)
1942	100.6 mm (4.0 in)
1943	91.8 mm (3.6 in)
1945	117.9 mm (4.6 in)
1946	86.9 mm (3.4 in)
1947	90.9 mm (3.6 in)
1948	115.1 mm (4.5 in)
1949	49.1 mm (1.9 in)
1950	105.9 mm (4.2 in)
1951	68.4 mm (2.7 in)
1952	128.4 mm (5.1 in)
1953	73.7 mm (2.9 in)
1954	70.1 mm (2.8 in)
1955	80.3 mm (3.2 in)
1956	91.7 mm (3.6 in)
1957	65.3 mm (2.6 in)
1958	60.8 mm (2.4 in)
1959	77.0 mm (3.0 in)
1960	64.6 mm (2.5 in)
1961	54.0 mm (2.1 in)
1962	91.5 mm (3.6 in)
1963	125.5 mm (4.9 in)
1964	136.8 mm (5.4 in)
1965	141.9 mm (5.6 in)
1966	119.3 mm (4.7 in)
1967	69.6 mm (2.7 in)
1968	70.6 mm (2.8 in)
1969	69.5 mm (2.7 in)
1970	98.4 mm (3.9 in)
1971	80.5 mm (3.2 in)
1972	111.8 mm (4.4 in)
1973	108.2 mm (4.3 in)
1974	125.5 mm (4.9 in)
1975	178.2 mm (7.0 in)
1976	101.6 mm (4.0 in)
1977	56.1 mm (2.2 in)
1978	125.2 mm (4.9 in)
1979	88.7 mm (3.5 in)
1980	95.2 mm (3.7 in)
1981	120.4 mm (4.7 in)
1982	126.3 mm (5.0 in)
1983	130.6 mm (5.1 in)
1984	126.2 mm (5.0 in)
1985	106.4 mm (4.2 in)
1986	71.3 mm (2.8 in)
1987	24.6 mm (1.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Huamuxtitlan (Smn), 1942 to 1987. The record is 130 days in 1977, marked on the chart; the median year is 78 days.

Longest dry spell (CDD) at Huamuxtitlan (Smn) by year
Year	Longest dry spell (CDD)
1942	44 days
1943	110 days
1945	78 days
1946	56 days
1947	96 days
1948	59 days
1949	113 days
1950	110 days
1951	111 days
1952	77 days
1953	106 days
1954	78 days
1955	125 days
1956	108 days
1957	49 days
1958	91 days
1959	97 days
1960	80 days
1961	120 days
1962	126 days
1963	64 days
1964	99 days
1965	69 days
1966	69 days
1967	90 days
1968	46 days
1969	76 days
1970	59 days
1971	74 days
1972	72 days
1973	65 days
1974	70 days
1975	128 days
1976	90 days
1977	130 days
1978	52 days
1979	61 days
1980	73 days
1981	66 days
1982	63 days
1983	84 days
1984	113 days
1985	87 days
1986	99 days
1987	59 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.

Rainfall Return Levels

42 years, 1945 to 1986

A day with at least 47.1 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 86.1 mm (3.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Huamuxtitlan (Smn): the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	47.1 mm (1.9 in)
5 years	61.4 mm (2.4 in)
10 years	69.1 mm (2.7 in)
25 years	77.1 mm (3.0 in)
50 years	82.0 mm (3.2 in)	Longer than the 42 years of record
100 years	86.1 mm (3.4 in)	Longer than the 42 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 42 years of values from 1945 to 1986.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 79.8 mm (3.1 in) in 1983; 72.9 mm (2.9 in) in 1978; 71.9 mm (2.8 in) in 1980.

Download the Data

Data for Huamuxtitlan (Smn) standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Huamuxtitlan (Smn) 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).