La Llave Weather Records (MXN00022042)

Record envelope, standing records and threshold days for La Llave (MXN00022042), Mexico, with 30 years of record.

Key Facts for La Llave

La Llave (MXN00022042) is a weather station in Mexico at 20.45 latitude and -99.98 longitude, 1,894 m (6,213 ft) above sea level.
The station reports from 1977 to 2006, 30 years of record.
1,464 records set at La Llave still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Mexico, 20.45 latitude, -99.98 longitude.
Elevation: 1,894 m (6,213 ft).
Period of record: 1977 to 2006, 30 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 La Llave. 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 La Llave, 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)	-4.4 C (24.1 F)	n/a	n/a
Feb	30.6 C (87.1 F)	-4.4 C (24.1 F)	n/a	n/a
Mar	32.8 C (91.0 F)	-3.3 C (26.1 F)	n/a	n/a
Apr	35.6 C (96.1 F)	0.6 C (33.1 F)	n/a	n/a
May	37.8 C (100.0 F)	3.9 C (39.0 F)	n/a	n/a
Jun	35.6 C (96.1 F)	5.0 C (41.0 F)	n/a	n/a
Jul	32.8 C (91.0 F)	5.6 C (42.1 F)	n/a	n/a
Aug	32.8 C (91.0 F)	6.7 C (44.1 F)	n/a	n/a
Sep	30.6 C (87.1 F)	0.6 C (33.1 F)	n/a	n/a
Oct	30.6 C (87.1 F)	-2.2 C (28.0 F)	n/a	n/a
Nov	30.6 C (87.1 F)	-1.1 C (30.0 F)	n/a	n/a
Dec	28.9 C (84.0 F)	-3.3 C (26.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at La Llave still stand. 1979 holds the most, with 155.

Standing records at La Llave by the year they were set
Year set	Standing records
1977	37
1978	70
1979	155
1980	73
1981	60
1982	80
1983	81
1984	57
1985	51
1986	63
1987	83
1988	44
1989	55
1990	21
1991	39
1992	30
1993	22
1994	17
1995	41
1996	10
1997	35
1998	12
1999	30
2000	19
2001	22
2002	30
2003	45
2004	60
2005	55
2006	67

Wettest Day of Each Month

Sep: 89.9 mm (3.5 in)

The wettest day on record for each calendar month at La Llave. The most was 89.9 mm (3.5 in) on 28 September 1987.

Record daily precipitation for each month at La Llave
Month	Record daily precipitation (mm)	Date
Jan	31.0 mm (1.2 in)	25 January 1980
Feb	15.7 mm (0.6 in)	11 February 1979
Mar	15.7 mm (0.6 in)	20 March 1993
Apr	39.9 mm (1.6 in)	29 April 1986
May	59.9 mm (2.4 in)	24 May 1979
Jun	53.1 mm (2.1 in)	24 June 2004
Jul	71.9 mm (2.8 in)	15 July 1983
Aug	79.8 mm (3.1 in)	17 August 1985
Sep	89.9 mm (3.5 in)	28 September 1987
Oct	56.9 mm (2.2 in)	9 October 1982
Nov	29.0 mm (1.1 in)	5 November 1986
Dec	54.1 mm (2.1 in)	25 December 2006

Period of Record Coverage

1977 to 2006

30 years of record at La Llave, 1977 to 2006. 10 years have data for under 90 percent of days and are left out of rankings: 1977, 1991, 1992, 1994, 1995, 1996, 1998, 1999 and others.

Days with data per year at La Llave
Year	Days with data	Share of year	Complete
1977	132	36%	No
1978	364	100%	Yes
1979	364	100%	Yes
1980	364	99%	Yes
1981	365	100%	Yes
1982	364	100%	Yes
1983	365	100%	Yes
1984	366	100%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	364	100%	Yes
1988	364	99%	Yes
1989	365	100%	Yes
1990	332	91%	Yes
1991	273	75%	No
1992	122	33%	No
1993	365	100%	Yes
1994	304	83%	No
1995	302	83%	No
1996	274	75%	No
1997	347	95%	Yes
1998	177	48%	No
1999	303	83%	No
2000	335	92%	Yes
2001	323	88%	No
2002	304	83%	No
2003	364	100%	Yes
2004	335	92%	Yes
2005	365	100%	Yes
2006	365	100%	Yes

Latest Records

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

Climate Trend

16 complete years, 1978 to 2006

One stripe for each of 16 complete years at La Llave, 1978 to 2006. 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 1979, at 16.6 C (62.0 F), and the warmest was 2006, at 19.0 C (66.2 F). The strongest colour marks a difference of 1.7 C (3.1 F).

Annual mean temperature at La Llave as warming stripes, 1978 to 2006
Year	Annual mean temperature	Difference from the station mean
1978	16.8 C	-0.59 C
1979	16.6 C	-0.74 C
1980	17.5 C	+0.07 C
1981	17.3 C	-0.07 C
1982	18.0 C	+0.58 C
1983	17.2 C	-0.22 C
1984	16.8 C	-0.60 C
1985	17.1 C	-0.32 C
1986	17.1 C	-0.33 C
1987	17.0 C	-0.36 C
1988	17.5 C	+0.11 C
1989	17.4 C	+0.02 C
1993	17.7 C	+0.34 C
1997	17.1 C	-0.28 C
2003	18.1 C	+0.70 C
2006	19.0 C	+1.61 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

1977 to 2006

Yearly extremes at La Llave: 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)	2001	33.3 C (92.0 F)	30
Coldest night (TNn)	-4.4 C (24.1 F)	1983	0.0 C (32.0 F)	30
Wettest day (Rx1day)	89.9 mm (3.5 in)	1987	40.1 mm (1.6 in)	30
Wettest five days (Rx5day)	143.2 mm (5.6 in)	1984	82.4 mm (3.2 in)	30
Longest dry spell (CDD)	163 days	1996	85 days	30

Hottest day (TXx)

The hottest day of the year at La Llave, 1977 to 2006. The record is 37.8 C (100.0 F) in 2001, marked on the chart; the median year is 33.3 C (92.0 F).

Hottest day (TXx) at La Llave by year
Year	Hottest day (TXx)
1977	28.9 C (84.0 F)
1978	33.9 C (93.0 F)
1979	33.9 C (93.0 F)
1980	32.8 C (91.0 F)
1981	32.8 C (91.0 F)
1982	33.9 C (93.0 F)
1983	36.7 C (98.1 F)
1984	32.8 C (91.0 F)
1985	32.8 C (91.0 F)
1986	32.8 C (91.0 F)
1987	31.7 C (89.1 F)
1988	33.9 C (93.0 F)
1989	35.0 C (95.0 F)
1990	32.8 C (91.0 F)
1991	33.9 C (93.0 F)
1992	32.8 C (91.0 F)
1993	32.8 C (91.0 F)
1994	33.9 C (93.0 F)
1995	30.0 C (86.0 F)
1996	33.9 C (93.0 F)
1997	31.7 C (89.1 F)
1998	28.9 C (84.0 F)
1999	32.8 C (91.0 F)
2000	32.8 C (91.0 F)
2001	37.8 C (100.0 F)
2002	33.9 C (93.0 F)
2003	36.7 C (98.1 F)
2004	33.9 C (93.0 F)
2005	35.6 C (96.1 F)
2006	36.7 C (98.1 F)

Coldest night (TNn)

The coldest night of the year at La Llave, 1977 to 2006. The record is -4.4 C (24.1 F) in 1983, marked on the chart; the median year is 0.0 C (32.0 F).

Coldest night (TNn) at La Llave by year
Year	Coldest night (TNn)
1977	0.0 C (32.0 F)
1978	0.0 C (32.0 F)
1979	-1.1 C (30.0 F)
1980	-3.3 C (26.1 F)
1981	-3.3 C (26.1 F)
1982	-2.2 C (28.0 F)
1983	-4.4 C (24.1 F)
1984	-2.2 C (28.0 F)
1985	-2.2 C (28.0 F)
1986	-4.4 C (24.1 F)
1987	-3.3 C (26.1 F)
1988	-3.3 C (26.1 F)
1989	-1.1 C (30.0 F)
1990	0.6 C (33.1 F)
1991	0.6 C (33.1 F)
1992	5.0 C (41.0 F)
1993	0.6 C (33.1 F)
1994	1.7 C (35.1 F)
1995	-0.6 C (30.9 F)
1996	0.0 C (32.0 F)
1997	-2.2 C (28.0 F)
1998	0.0 C (32.0 F)
1999	0.0 C (32.0 F)
2000	0.0 C (32.0 F)
2001	0.0 C (32.0 F)
2002	0.0 C (32.0 F)
2003	-2.2 C (28.0 F)
2004	0.6 C (33.1 F)
2005	1.7 C (35.1 F)
2006	0.6 C (33.1 F)

Wettest day (Rx1day)

The wettest day of the year at La Llave, 1977 to 2006. The record is 89.9 mm (3.5 in) in 1987, marked on the chart; the median year is 40.1 mm (1.6 in).

Wettest day (Rx1day) at La Llave by year
Year	Wettest day (Rx1day)
1977	41.9 mm (1.6 in)
1978	43.9 mm (1.7 in)
1979	59.9 mm (2.4 in)
1980	40.1 mm (1.6 in)
1981	25.4 mm (1.0 in)
1982	56.9 mm (2.2 in)
1983	71.9 mm (2.8 in)
1984	52.8 mm (2.1 in)
1985	79.8 mm (3.1 in)
1986	39.9 mm (1.6 in)
1987	89.9 mm (3.5 in)
1988	54.9 mm (2.2 in)
1989	17.8 mm (0.7 in)
1990	31.0 mm (1.2 in)
1991	37.8 mm (1.5 in)
1992	39.9 mm (1.6 in)
1993	31.8 mm (1.3 in)
1994	66.8 mm (2.6 in)
1995	54.9 mm (2.2 in)
1996	30.0 mm (1.2 in)
1997	63.5 mm (2.5 in)
1998	35.1 mm (1.4 in)
1999	30.0 mm (1.2 in)
2000	40.1 mm (1.6 in)
2001	33.3 mm (1.3 in)
2002	34.0 mm (1.3 in)
2003	38.1 mm (1.5 in)
2004	58.2 mm (2.3 in)
2005	35.6 mm (1.4 in)
2006	54.1 mm (2.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at La Llave, 1977 to 2006. The record is 143.2 mm (5.6 in) in 1984, marked on the chart; the median year is 82.4 mm (3.2 in).

Wettest five days (Rx5day) at La Llave by year
Year	Wettest five days (Rx5day)
1977	46.0 mm (1.8 in)
1978	81.2 mm (3.2 in)
1979	89.6 mm (3.5 in)
1980	81.0 mm (3.2 in)
1981	56.1 mm (2.2 in)
1982	89.4 mm (3.5 in)
1983	86.3 mm (3.4 in)
1984	143.2 mm (5.6 in)
1985	90.7 mm (3.6 in)
1986	71.6 mm (2.8 in)
1987	89.9 mm (3.5 in)
1988	108.5 mm (4.3 in)
1989	29.5 mm (1.2 in)
1990	66.6 mm (2.6 in)
1991	50.8 mm (2.0 in)
1992	65.6 mm (2.6 in)
1993	49.6 mm (2.0 in)
1994	84.3 mm (3.3 in)
1995	94.8 mm (3.7 in)
1996	62.2 mm (2.4 in)
1997	134.2 mm (5.3 in)
1998	60.2 mm (2.4 in)
1999	72.7 mm (2.9 in)
2000	83.3 mm (3.3 in)
2001	61.5 mm (2.4 in)
2002	99.3 mm (3.9 in)
2003	122.2 mm (4.8 in)
2004	81.6 mm (3.2 in)
2005	89.6 mm (3.5 in)
2006	111.5 mm (4.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at La Llave, 1977 to 2006. The record is 163 days in 1996, marked on the chart; the median year is 85 days.

Longest dry spell (CDD) at La Llave by year
Year	Longest dry spell (CDD)
1977	44 days
1978	77 days
1979	54 days
1980	59 days
1981	62 days
1982	48 days
1983	73 days
1984	84 days
1985	56 days
1986	70 days
1987	109 days
1988	118 days
1989	120 days
1990	123 days
1991	125 days
1992	42 days
1993	66 days
1994	131 days
1995	61 days
1996	163 days
1997	97 days
1998	86 days
1999	159 days
2000	116 days
2001	79 days
2002	56 days
2003	154 days
2004	105 days
2005	123 days
2006	115 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 La Llave standing records by year: CSV or JSON. Field meanings are on the data page.
Data for La Llave 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).