Loma Alta Weather Records (MXN00015229)

Record envelope, standing records and threshold days for Loma Alta (MXN00015229), Mexico, with 36 years of record.

Key Facts for Loma Alta

Loma Alta (MXN00015229) is a weather station in Mexico at 19.17 latitude and -99.80 longitude, 3,432 m (11,259 ft) above sea level.
The station reports from 1977 to 2012, 36 years of record.
1,464 records set at Loma Alta still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Mexico, 19.17 latitude, -99.80 longitude.
Elevation: 3,432 m (11,259 ft).
Period of record: 1977 to 2012, 36 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 Loma Alta. 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 Loma Alta, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	18.9 C (66.0 F)	-8.3 C (17.1 F)	n/a	n/a
Feb	18.9 C (66.0 F)	-6.1 C (21.0 F)	n/a	n/a
Mar	19.4 C (66.9 F)	-1.7 C (28.9 F)	n/a	n/a
Apr	20.6 C (69.1 F)	0.0 C (32.0 F)	n/a	n/a
May	25.0 C (77.0 F)	0.0 C (32.0 F)	n/a	n/a
Jun	23.9 C (75.0 F)	0.0 C (32.0 F)	n/a	n/a
Jul	18.9 C (66.0 F)	0.0 C (32.0 F)	n/a	n/a
Aug	21.7 C (71.1 F)	0.0 C (32.0 F)	n/a	n/a
Sep	21.7 C (71.1 F)	0.0 C (32.0 F)	n/a	n/a
Oct	16.7 C (62.1 F)	-1.1 C (30.0 F)	n/a	n/a
Nov	19.4 C (66.9 F)	-5.0 C (23.0 F)	n/a	n/a
Dec	19.4 C (66.9 F)	-6.7 C (19.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Loma Alta still stand. 1982 holds the most, with 152.

Standing records at Loma Alta by the year they were set
Year set	Standing records
1977	22
1978	70
1979	81
1980	90
1981	129
1982	152
1983	62
1984	56
1985	78
1986	109
1987	64
1997	15
2000	14
2003	3
2004	75
2005	28
2006	49
2008	92
2010	121
2011	141
2012	13

Wettest Day of Each Month

Jul: 59.9 mm (2.4 in)

The wettest day on record for each calendar month at Loma Alta. The most was 59.9 mm (2.4 in) on 9 July 2008.

Record daily precipitation for each month at Loma Alta
Month	Record daily precipitation (mm)	Date
Jan	22.4 mm (0.9 in)	23 January 1980
Feb	24.9 mm (1.0 in)	7 February 1984
Mar	12.7 mm (0.5 in)	16 March 1978
Apr	23.4 mm (0.9 in)	14 April 1981
May	47.0 mm (1.9 in)	19 May 1986
Jun	31.8 mm (1.3 in)	18 June 1981
Jul	59.9 mm (2.4 in)	9 July 2008
Aug	24.9 mm (1.0 in)	27 August 1986
Sep	39.9 mm (1.6 in)	8 September 1979
Oct	39.9 mm (1.6 in)	28 October 2006
Nov	30.0 mm (1.2 in)	14 November 2006
Dec	19.3 mm (0.8 in)	5 December 1979

Period of Record Coverage

1977 to 2012

21 years of record at Loma Alta, 1977 to 2012. 12 years have data for under 90 percent of days and are left out of rankings: 1977, 1981, 1983, 1984, 1987, 1997, 2000, 2003 and others.

Days with data per year at Loma Alta
Year	Days with data	Share of year	Complete
1977	92	25%	No
1978	365	100%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	318	87%	No
1982	363	99%	Yes
1983	200	55%	No
1984	316	86%	No
1985	333	91%	Yes
1986	359	98%	Yes
1987	149	41%	No
1997	58	16%	No
2000	50	14%	No
2003	59	16%	No
2004	334	91%	Yes
2005	213	58%	No
2006	301	82%	No
2008	353	96%	Yes
2010	358	98%	Yes
2011	275	75%	No
2012	90	25%	No

Latest Records

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

Extremes by Year

1977 to 2012

Yearly extremes at Loma Alta: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	25.0 C (77.0 F)	1981	18.3 C (64.9 F)	21
Coldest night (TNn)	-8.3 C (17.1 F)	1987	0.0 C (32.0 F)	21
Wettest day (Rx1day)	59.9 mm (2.4 in)	2008	24.9 mm (1.0 in)	21
Wettest five days (Rx5day)	133.6 mm (5.3 in)	1984	64.8 mm (2.6 in)	21
Longest dry spell (CDD)	97 days	1986	41 days	21

Hottest day (TXx)

The hottest day of the year at Loma Alta, 1977 to 2012. The record is 25.0 C (77.0 F) in 1981, marked on the chart; the median year is 18.3 C (64.9 F).

Hottest day (TXx) at Loma Alta by year
Year	Hottest day (TXx)
1977	19.4 C (66.9 F)
1978	20.0 C (68.0 F)
1979	23.9 C (75.0 F)
1980	18.3 C (64.9 F)
1981	25.0 C (77.0 F)
1982	24.4 C (75.9 F)
1983	25.0 C (77.0 F)
1984	20.0 C (68.0 F)
1985	21.7 C (71.1 F)
1986	18.9 C (66.0 F)
1987	16.7 C (62.1 F)
1997	17.2 C (63.0 F)
2000	13.9 C (57.0 F)
2003	15.0 C (59.0 F)
2004	16.7 C (62.1 F)
2005	20.0 C (68.0 F)
2006	16.7 C (62.1 F)
2008	16.7 C (62.1 F)
2010	17.8 C (64.0 F)
2011	15.6 C (60.1 F)
2012	11.7 C (53.1 F)

Coldest night (TNn)

The coldest night of the year at Loma Alta, 1977 to 2012. The record is -8.3 C (17.1 F) in 1987, marked on the chart; the median year is 0.0 C (32.0 F).

Coldest night (TNn) at Loma Alta by year
Year	Coldest night (TNn)
1977	-5.0 C (23.0 F)
1978	-5.6 C (21.9 F)
1979	0.0 C (32.0 F)
1980	-2.2 C (28.0 F)
1981	0.0 C (32.0 F)
1982	-2.8 C (27.0 F)
1983	0.0 C (32.0 F)
1984	0.0 C (32.0 F)
1985	0.0 C (32.0 F)
1986	-6.7 C (19.9 F)
1987	-8.3 C (17.1 F)
1997	0.0 C (32.0 F)
2000	0.0 C (32.0 F)
2003	1.7 C (35.1 F)
2004	0.0 C (32.0 F)
2005	0.0 C (32.0 F)
2006	0.0 C (32.0 F)
2008	-4.4 C (24.1 F)
2010	-3.3 C (26.1 F)
2011	0.0 C (32.0 F)
2012	0.0 C (32.0 F)

Wettest day (Rx1day)

The wettest day of the year at Loma Alta, 1977 to 2012. The record is 59.9 mm (2.4 in) in 2008, marked on the chart; the median year is 24.9 mm (1.0 in).

Wettest day (Rx1day) at Loma Alta by year
Year	Wettest day (Rx1day)
1977	11.4 mm (0.4 in)
1978	23.1 mm (0.9 in)
1979	39.9 mm (1.6 in)
1980	22.4 mm (0.9 in)
1981	35.8 mm (1.4 in)
1982	42.9 mm (1.7 in)
1983	29.0 mm (1.1 in)
1984	30.0 mm (1.2 in)
1985	24.9 mm (1.0 in)
1986	47.0 mm (1.9 in)
1987	15.0 mm (0.6 in)
1997	17.8 mm (0.7 in)
2000	31.0 mm (1.2 in)
2003	6.9 mm (0.27 in)
2004	20.8 mm (0.8 in)
2005	35.8 mm (1.4 in)
2006	39.9 mm (1.6 in)
2008	59.9 mm (2.4 in)
2010	24.9 mm (1.0 in)
2011	11.9 mm (0.5 in)
2012	10.9 mm (0.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Loma Alta, 1977 to 2012. The record is 133.6 mm (5.3 in) in 1984, marked on the chart; the median year is 64.8 mm (2.6 in).

Wettest five days (Rx5day) at Loma Alta by year
Year	Wettest five days (Rx5day)
1977	16.8 mm (0.7 in)
1978	62.0 mm (2.4 in)
1979	80.5 mm (3.2 in)
1980	64.8 mm (2.6 in)
1981	78.3 mm (3.1 in)
1982	77.7 mm (3.1 in)
1983	86.4 mm (3.4 in)
1984	133.6 mm (5.3 in)
1985	83.0 mm (3.3 in)
1986	97.2 mm (3.8 in)
1987	15.0 mm (0.6 in)
1997	50.3 mm (2.0 in)
2000	53.7 mm (2.1 in)
2003	8.7 mm (0.34 in)
2004	33.5 mm (1.3 in)
2005	67.3 mm (2.6 in)
2006	68.4 mm (2.7 in)
2008	107.2 mm (4.2 in)
2010	53.4 mm (2.1 in)
2011	30.2 mm (1.2 in)
2012	13.2 mm (0.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Loma Alta, 1977 to 2012. The record is 97 days in 1986, marked on the chart; the median year is 41 days.

Longest dry spell (CDD) at Loma Alta by year
Year	Longest dry spell (CDD)
1977	39 days
1978	26 days
1979	37 days
1980	47 days
1981	44 days
1982	41 days
1983	50 days
1984	43 days
1985	41 days
1986	97 days
1987	61 days
1997	16 days
2000	6 days
2003	24 days
2004	30 days
2005	70 days
2006	37 days
2008	66 days
2010	82 days
2011	33 days
2012	24 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 Loma Alta standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Loma Alta 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).