Huimilpan Weather Records (MXN00022029)

Record envelope, standing records and threshold days for Huimilpan (MXN00022029), Mexico, with 38 years of record.

Key Facts for Huimilpan

Huimilpan (MXN00022029) is a weather station in Mexico at 20.38 latitude and -100.27 longitude, 2,271 m (7,450 ft) above sea level.
The station reports from 1973 to 2010, 38 years of record.
1,464 records set at Huimilpan still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Huimilpan set a daily record precipitation of 18.8 mm (0.7 in) on 31 January 2010.

About the Station

Location: Mexico, 20.38 latitude, -100.27 longitude.
Elevation: 2,271 m (7,450 ft).
Period of record: 1973 to 2010, 38 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 Huimilpan. 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 Huimilpan, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	35.0 C (95.0 F)	-5.6 C (21.9 F)	n/a	n/a
Feb	31.7 C (89.1 F)	-6.1 C (21.0 F)	n/a	n/a
Mar	31.7 C (89.1 F)	-2.8 C (27.0 F)	n/a	n/a
Apr	35.0 C (95.0 F)	1.1 C (34.0 F)	n/a	n/a
May	37.8 C (100.0 F)	4.4 C (39.9 F)	n/a	n/a
Jun	35.0 C (95.0 F)	3.3 C (37.9 F)	n/a	n/a
Jul	32.8 C (91.0 F)	5.0 C (41.0 F)	n/a	n/a
Aug	30.6 C (87.1 F)	1.7 C (35.1 F)	n/a	n/a
Sep	31.7 C (89.1 F)	2.8 C (37.0 F)	n/a	n/a
Oct	31.7 C (89.1 F)	-3.9 C (25.0 F)	n/a	n/a
Nov	32.8 C (91.0 F)	-5.0 C (23.0 F)	n/a	n/a
Dec	32.8 C (91.0 F)	-5.0 C (23.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Huimilpan still stand. 1976 holds the most, with 135.

Standing records at Huimilpan by the year they were set
Year set	Standing records
1973	28
1974	27
1975	34
1976	135
1977	56
1978	53
1979	80
1980	95
1981	32
1982	19
1983	29
1984	33
1985	26
1986	38
1987	31
1988	30
1989	42
1990	33
1991	19
1992	12
1993	18
1994	10
1995	71
1996	83
1997	13
1999	28
2000	71
2001	102
2002	25
2003	76
2004	22
2005	25
2006	28
2007	4
2008	13
2009	18
2010	5

Wettest Day of Each Month

Jun: 97.8 mm (3.9 in)

The wettest day on record for each calendar month at Huimilpan. The most was 97.8 mm (3.9 in) on 10 June 1998.

Record daily precipitation for each month at Huimilpan
Month	Record daily precipitation (mm)	Date
Jan	51.8 mm (2.0 in)	2 January 1988
Feb	17.8 mm (0.7 in)	4 February 2007
Mar	19.8 mm (0.8 in)	18 March 1978
Apr	43.9 mm (1.7 in)	7 April 1988
May	78.5 mm (3.1 in)	29 May 2004
Jun	97.8 mm (3.9 in)	10 June 1998
Jul	84.1 mm (3.3 in)	23 July 1985
Aug	72.9 mm (2.9 in)	4 August 2006
Sep	96.8 mm (3.8 in)	29 September 2007
Oct	60.5 mm (2.4 in)	11 October 1986
Nov	40.4 mm (1.6 in)	4 November 1986
Dec	13.2 mm (0.5 in)	1 December 1979

Period of Record Coverage

1973 to 2010

37 years of record at Huimilpan, 1973 to 2010. 7 years have data for under 90 percent of days and are left out of rankings: 1975, 1980, 1991, 1992, 1997, 1999, 2010.

Days with data per year at Huimilpan
Year	Days with data	Share of year	Complete
1973	364	100%	Yes
1974	335	92%	Yes
1975	153	42%	No
1976	366	100%	Yes
1977	334	92%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	288	79%	No
1981	365	100%	Yes
1982	365	100%	Yes
1983	336	92%	Yes
1984	366	100%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	364	100%	Yes
1988	366	100%	Yes
1989	334	92%	Yes
1990	365	100%	Yes
1991	304	83%	No
1992	245	67%	No
1993	365	100%	Yes
1994	365	100%	Yes
1995	333	91%	Yes
1996	365	100%	Yes
1997	122	33%	No
1999	214	59%	No
2000	365	100%	Yes
2001	364	100%	Yes
2002	334	92%	Yes
2003	360	99%	Yes
2004	363	99%	Yes
2005	365	100%	Yes
2006	365	100%	Yes
2007	365	100%	Yes
2008	366	100%	Yes
2009	365	100%	Yes
2010	31	8%	No

Latest Records

Latest records at Huimilpan
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 January 2010	Huimilpan, MX	daily rain	18.8 mm (0.7 in)	11.4 mm (0.4 in)	15 years	19 of 100 (Routine)
13 January 2010	Huimilpan, MX	daily rain	0.3 mm (0.01 in)	0.3 mm (0.01 in)	36 years	14 of 100 (Routine)
10 January 2010	Huimilpan, MX	daily low max	11.7 C (53.1 F)	3.3 C (5.9 F)	32 years	22 of 100 (Routine)
9 January 2010	Huimilpan, MX	daily low max	10.6 C (51.1 F)	3.3 C (5.9 F)	8 years	15 of 100 (Routine)
8 January 2010	Huimilpan, MX	daily low max	15.6 C (60.1 F)	1.1 C (2.0 F)	32 years	15 of 100 (Routine)
8 January 2010	Huimilpan, MX	daily rain	11.4 mm (0.4 in)	6.6 mm (0.26 in)	8 years	12 of 100 (Routine)
7 January 2010	Huimilpan, MX	daily low max	12.8 C (55.0 F)	3.9 C (7.0 F)	24 years	22 of 100 (Routine)
7 January 2010	Huimilpan, MX	daily rain	10.9 mm (0.4 in)	8.9 mm (0.35 in)	26 years	19 of 100 (Routine)
6 January 2010	Huimilpan, MX	daily low max	13.9 C (57.0 F)	2.8 C (5.0 F)	27 years	19 of 100 (Routine)
31 December 2009	Huimilpan, MX	daily high min	10.0 C (50.0 F)	1.1 C (2.0 F)	2 years	7 of 100 (Routine)
30 December 2009	Huimilpan, MX	daily high min	10.6 C (51.1 F)	0.6 C (1.1 F)	34 years	15 of 100 (Routine)
24 December 2009	Huimilpan, MX	daily high min	10.6 C (51.1 F)	0.6 C (1.1 F)	4 years	6 of 100 (Routine)
13 December 2009	Huimilpan, MX	daily high min (Tie)	10.0 C (50.0 F)	tie	30 years	3 of 100 (Routine)
9 December 2009	Huimilpan, MX	daily high min (Tie)	8.9 C (48.0 F)	tie	28 years	2 of 100 (Routine)
3 December 2009	Huimilpan, MX	daily high min (Tie)	10.0 C (50.0 F)	tie	32 years	3 of 100 (Routine)
30 November 2009	Huimilpan, MX	daily high min (Tie)	10.0 C (50.0 F)	tie	32 years	3 of 100 (Routine)
29 November 2009	Huimilpan, MX	daily high min	10.6 C (51.1 F)	1.7 C (3.1 F)	4 years	9 of 100 (Routine)
15 November 2009	Huimilpan, MX	daily high min (Tie)	7.8 C (46.0 F)	tie	31 years	3 of 100 (Routine)
24 October 2009	Huimilpan, MX	daily rain (Tie)	11.7 mm (0.5 in)	tie	24 years	2 of 100 (Routine)
22 October 2009	Huimilpan, MX	daily high max (Tie)	26.7 C (80.1 F)	tie	4 years	1 of 100 (Routine)

Climate Trend

24 complete years, 1973 to 2009

One stripe for each of 24 complete years at Huimilpan, 1973 to 2009. Blue stripes are years cooler than the station's own mean of 15.5 C (59.8 F); red stripes are warmer. The coolest year was 1976, at 13.2 C (55.7 F), and the warmest was 2001, at 17.5 C (63.4 F). The strongest colour marks a difference of 2.4 C (4.3 F).

Annual mean temperature at Huimilpan as warming stripes, 1973 to 2009
Year	Annual mean temperature	Difference from the station mean
1973	15.1 C	-0.37 C
1976	13.2 C	-2.31 C
1978	15.0 C	-0.51 C
1979	17.1 C	+1.59 C
1981	14.8 C	-0.68 C
1982	15.4 C	-0.02 C
1984	14.6 C	-0.90 C
1985	14.7 C	-0.76 C
1986	15.3 C	-0.16 C
1987	15.0 C	-0.45 C
1988	15.2 C	-0.26 C
1990	15.3 C	-0.19 C
1993	15.0 C	-0.47 C
1994	14.7 C	-0.75 C
1996	14.1 C	-1.40 C
2000	15.8 C	+0.30 C
2001	17.5 C	+2.01 C
2003	16.7 C	+1.26 C
2004	15.1 C	-0.34 C
2005	16.4 C	+0.97 C
2006	16.8 C	+1.31 C
2007	15.9 C	+0.46 C
2008	16.0 C	+0.49 C
2009	16.7 C	+1.23 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

1973 to 2010

Yearly extremes at Huimilpan: 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)	1997	31.1 C (88.0 F)	37
Coldest night (TNn)	-6.1 C (21.0 F)	1976	-2.2 C (28.0 F)	37
Wettest day (Rx1day)	97.8 mm (3.9 in)	1998	56.1 mm (2.2 in)	38
Wettest five days (Rx5day)	206.7 mm (8.1 in)	2007	98.9 mm (3.9 in)	38
Longest dry spell (CDD)	143 days	2003	61 days	38

Hottest day (TXx)

The hottest day of the year at Huimilpan, 1973 to 2010. The record is 37.8 C (100.0 F) in 1997, marked on the chart; the median year is 31.1 C (88.0 F).

Hottest day (TXx) at Huimilpan by year
Year	Hottest day (TXx)
1973	33.9 C (93.0 F)
1974	31.1 C (88.0 F)
1975	25.0 C (77.0 F)
1976	25.0 C (77.0 F)
1977	31.1 C (88.0 F)
1978	30.6 C (87.1 F)
1979	32.8 C (91.0 F)
1980	30.0 C (86.0 F)
1981	30.0 C (86.0 F)
1982	30.0 C (86.0 F)
1983	30.6 C (87.1 F)
1984	28.9 C (84.0 F)
1985	29.4 C (84.9 F)
1986	30.0 C (86.0 F)
1987	30.0 C (86.0 F)
1988	31.7 C (89.1 F)
1989	30.6 C (87.1 F)
1990	31.7 C (89.1 F)
1991	31.7 C (89.1 F)
1992	28.9 C (84.0 F)
1993	31.1 C (88.0 F)
1994	31.7 C (89.1 F)
1995	35.0 C (95.0 F)
1996	32.8 C (91.0 F)
1997	37.8 C (100.0 F)
1998	n/a
1999	28.9 C (84.0 F)
2000	32.8 C (91.0 F)
2001	37.8 C (100.0 F)
2002	30.6 C (87.1 F)
2003	35.6 C (96.1 F)
2004	35.0 C (95.0 F)
2005	35.0 C (95.0 F)
2006	32.8 C (91.0 F)
2007	30.0 C (86.0 F)
2008	31.7 C (89.1 F)
2009	31.7 C (89.1 F)
2010	25.0 C (77.0 F)

Coldest night (TNn)

The coldest night of the year at Huimilpan, 1973 to 2010. The record is -6.1 C (21.0 F) in 1976, marked on the chart; the median year is -2.2 C (28.0 F).

Coldest night (TNn) at Huimilpan by year
Year	Coldest night (TNn)
1973	-2.8 C (27.0 F)
1974	0.6 C (33.1 F)
1975	-2.8 C (27.0 F)
1976	-6.1 C (21.0 F)
1977	0.6 C (33.1 F)
1978	0.0 C (32.0 F)
1979	-3.3 C (26.1 F)
1980	-3.3 C (26.1 F)
1981	-2.2 C (28.0 F)
1982	-4.4 C (24.1 F)
1983	-2.2 C (28.0 F)
1984	-2.2 C (28.0 F)
1985	-5.0 C (23.0 F)
1986	-3.9 C (25.0 F)
1987	-2.8 C (27.0 F)
1988	-5.6 C (21.9 F)
1989	0.0 C (32.0 F)
1990	-3.3 C (26.1 F)
1991	-1.1 C (30.0 F)
1992	1.7 C (35.1 F)
1993	0.0 C (32.0 F)
1994	0.6 C (33.1 F)
1995	-3.3 C (26.1 F)
1996	-5.0 C (23.0 F)
1997	-2.2 C (28.0 F)
1998	n/a
1999	-3.9 C (25.0 F)
2000	-2.8 C (27.0 F)
2001	0.6 C (33.1 F)
2002	-3.3 C (26.1 F)
2003	-4.4 C (24.1 F)
2004	-2.8 C (27.0 F)
2005	0.0 C (32.0 F)
2006	0.0 C (32.0 F)
2007	0.6 C (33.1 F)
2008	0.0 C (32.0 F)
2009	1.7 C (35.1 F)
2010	1.7 C (35.1 F)

Wettest day (Rx1day)

The wettest day of the year at Huimilpan, 1973 to 2010. The record is 97.8 mm (3.9 in) in 1998, marked on the chart; the median year is 56.1 mm (2.2 in).

Wettest day (Rx1day) at Huimilpan by year
Year	Wettest day (Rx1day)
1973	65.3 mm (2.6 in)
1974	39.1 mm (1.5 in)
1975	33.8 mm (1.3 in)
1976	47.8 mm (1.9 in)
1977	79.8 mm (3.1 in)
1978	50.0 mm (2.0 in)
1979	66.0 mm (2.6 in)
1980	30.0 mm (1.2 in)
1981	81.8 mm (3.2 in)
1982	48.3 mm (1.9 in)
1983	53.8 mm (2.1 in)
1984	75.7 mm (3.0 in)
1985	84.1 mm (3.3 in)
1986	80.3 mm (3.2 in)
1987	66.3 mm (2.6 in)
1988	51.8 mm (2.0 in)
1989	56.6 mm (2.2 in)
1990	55.6 mm (2.2 in)
1991	36.3 mm (1.4 in)
1992	74.9 mm (2.9 in)
1993	36.3 mm (1.4 in)
1994	47.8 mm (1.9 in)
1995	66.8 mm (2.6 in)
1996	47.8 mm (1.9 in)
1997	39.9 mm (1.6 in)
1998	97.8 mm (3.9 in)
1999	59.9 mm (2.4 in)
2000	60.2 mm (2.4 in)
2001	39.9 mm (1.6 in)
2002	67.6 mm (2.7 in)
2003	58.2 mm (2.3 in)
2004	78.5 mm (3.1 in)
2005	55.6 mm (2.2 in)
2006	72.9 mm (2.9 in)
2007	96.8 mm (3.8 in)
2008	45.0 mm (1.8 in)
2009	39.1 mm (1.5 in)
2010	18.8 mm (0.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Huimilpan, 1973 to 2010. The record is 206.7 mm (8.1 in) in 2007, marked on the chart; the median year is 98.9 mm (3.9 in).

Wettest five days (Rx5day) at Huimilpan by year
Year	Wettest five days (Rx5day)
1973	153.3 mm (6.0 in)
1974	84.6 mm (3.3 in)
1975	96.8 mm (3.8 in)
1976	111.6 mm (4.4 in)
1977	126.2 mm (5.0 in)
1978	138.4 mm (5.4 in)
1979	89.2 mm (3.5 in)
1980	77.2 mm (3.0 in)
1981	160.3 mm (6.3 in)
1982	96.3 mm (3.8 in)
1983	158.0 mm (6.2 in)
1984	162.0 mm (6.4 in)
1985	123.3 mm (4.9 in)
1986	121.5 mm (4.8 in)
1987	99.1 mm (3.9 in)
1988	78.7 mm (3.1 in)
1989	78.3 mm (3.1 in)
1990	107.5 mm (4.2 in)
1991	112.3 mm (4.4 in)
1992	111.5 mm (4.4 in)
1993	83.7 mm (3.3 in)
1994	98.1 mm (3.9 in)
1995	87.1 mm (3.4 in)
1996	116.8 mm (4.6 in)
1997	67.6 mm (2.7 in)
1998	125.5 mm (4.9 in)
1999	110.0 mm (4.3 in)
2000	86.6 mm (3.4 in)
2001	92.2 mm (3.6 in)
2002	98.6 mm (3.9 in)
2003	172.3 mm (6.8 in)
2004	95.3 mm (3.8 in)
2005	90.1 mm (3.5 in)
2006	92.7 mm (3.6 in)
2007	206.7 mm (8.1 in)
2008	117.7 mm (4.6 in)
2009	91.0 mm (3.6 in)
2010	22.3 mm (0.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Huimilpan, 1973 to 2010. The record is 143 days in 2003, marked on the chart; the median year is 61 days.

Longest dry spell (CDD) at Huimilpan by year
Year	Longest dry spell (CDD)
1973	51 days
1974	25 days
1975	75 days
1976	81 days
1977	52 days
1978	41 days
1979	73 days
1980	73 days
1981	60 days
1982	46 days
1983	55 days
1984	91 days
1985	52 days
1986	68 days
1987	50 days
1988	106 days
1989	64 days
1990	27 days
1991	117 days
1992	46 days
1993	77 days
1994	82 days
1995	54 days
1996	87 days
1997	51 days
1998	133 days
1999	78 days
2000	65 days
2001	31 days
2002	50 days
2003	143 days
2004	58 days
2005	68 days
2006	30 days
2007	28 days
2008	74 days
2009	62 days
2010	15 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

32 years, 1973 to 2009

A day with at least 59.6 mm (2.3 in) of rain is expected about once in 2 years. A day with at least 110.1 mm (4.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Huimilpan: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	59.6 mm (2.3 in)
5 years	75.0 mm (3.0 in)
10 years	84.4 mm (3.3 in)
25 years	95.4 mm (3.8 in)
50 years	103.0 mm (4.1 in)	Longer than the 32 years of record
100 years	110.1 mm (4.3 in)	Longer than the 32 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, 32 years of values from 1973 to 2009.

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: 97.8 mm (3.9 in) in 1998; 96.8 mm (3.8 in) in 2007; 84.1 mm (3.3 in) in 1985.

Download the Data

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