La Concepcion Weather Records (MXN00015189)

Record envelope, standing records and threshold days for La Concepcion (MXN00015189), Mexico, with 36 years of record.

Key Facts for La Concepcion

La Concepcion (MXN00015189) is a weather station in Mexico at 20.13 latitude and -99.90 longitude, 2,351 m (7,713 ft) above sea level.
The station reports from 1973 to 2008, 36 years of record.
1,464 records set at La Concepcion still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
La Concepcion tied a daily record high maximum temperature of 25.0 C (77.0 F) on 29 December 2008.

About the Station

Location: Mexico, 20.13 latitude, -99.90 longitude.
Elevation: 2,351 m (7,713 ft).
Period of record: 1973 to 2008, 36 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 La Concepcion. 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 Concepcion, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	25.0 C (77.0 F)	-8.9 C (16.0 F)	n/a	n/a
Feb	26.7 C (80.1 F)	-8.9 C (16.0 F)	n/a	n/a
Mar	29.4 C (84.9 F)	-7.2 C (19.0 F)	n/a	n/a
Apr	30.6 C (87.1 F)	-1.1 C (30.0 F)	n/a	n/a
May	33.3 C (91.9 F)	0.6 C (33.1 F)	n/a	n/a
Jun	31.7 C (89.1 F)	0.6 C (33.1 F)	n/a	n/a
Jul	26.7 C (80.1 F)	2.8 C (37.0 F)	n/a	n/a
Aug	27.8 C (82.0 F)	4.4 C (39.9 F)	n/a	n/a
Sep	27.2 C (81.0 F)	-3.3 C (26.1 F)	n/a	n/a
Oct	28.9 C (84.0 F)	-5.6 C (21.9 F)	n/a	n/a
Nov	26.7 C (80.1 F)	-5.0 C (23.0 F)	n/a	n/a
Dec	28.9 C (84.0 F)	-7.2 C (19.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at La Concepcion still stand. 1998 holds the most, with 92.

Standing records at La Concepcion by the year they were set
Year set	Standing records
1973	45
1974	43
1975	67
1976	58
1977	62
1978	51
1979	70
1980	32
1981	40
1982	28
1983	59
1984	31
1985	31
1986	35
1987	39
1988	56
1989	76
1990	36
1991	9
1992	19
1993	22
1994	20
1995	36
1996	36
1997	58
1998	92
1999	43
2000	53
2001	18
2002	29
2003	27
2004	25
2005	28
2006	41
2007	23
2008	26

Wettest Day of Each Month

Jul: 124.2 mm (4.9 in)

The wettest day on record for each calendar month at La Concepcion. The most was 124.2 mm (4.9 in) on 4 July 1990.

Record daily precipitation for each month at La Concepcion
Month	Record daily precipitation (mm)	Date
Jan	26.4 mm (1.0 in)	17 January 1981
Feb	48.3 mm (1.9 in)	1 February 1975
Mar	24.9 mm (1.0 in)	21 March 1982
Apr	30.2 mm (1.2 in)	25 April 1989
May	55.6 mm (2.2 in)	18 May 1985
Jun	90.2 mm (3.6 in)	23 June 1995
Jul	124.2 mm (4.9 in)	4 July 1990
Aug	65.8 mm (2.6 in)	10 August 1975
Sep	72.9 mm (2.9 in)	9 September 1979
Oct	83.6 mm (3.3 in)	21 October 1990
Nov	41.1 mm (1.6 in)	3 November 1991
Dec	32.3 mm (1.3 in)	3 December 1979

Period of Record Coverage

1973 to 2008

36 years of record at La Concepcion, 1973 to 2008. 13 years have data for under 90 percent of days and are left out of rankings: 1977, 1980, 1982, 1985, 1986, 1987, 1988, 1989 and others.

Days with data per year at La Concepcion
Year	Days with data	Share of year	Complete
1973	334	92%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	307	84%	No
1978	365	100%	Yes
1979	365	100%	Yes
1980	213	58%	No
1981	352	96%	Yes
1982	263	72%	No
1983	350	96%	Yes
1984	351	96%	Yes
1985	302	83%	No
1986	282	77%	No
1987	228	62%	No
1988	319	87%	No
1989	187	51%	No
1990	125	34%	No
1991	104	28%	No
1992	196	54%	No
1993	271	74%	No
1994	356	98%	Yes
1995	358	98%	Yes
1996	362	99%	Yes
1997	361	99%	Yes
1998	359	98%	Yes
1999	362	99%	Yes
2000	365	100%	Yes
2001	360	99%	Yes
2002	333	91%	Yes
2003	360	99%	Yes
2004	361	99%	Yes
2005	359	98%	Yes
2006	360	99%	Yes
2007	334	92%	Yes
2008	299	82%	No

Latest Records

Latest records at La Concepcion
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
29 December 2008	La Concepcion, MX	daily high max (Tie)	25.0 C (77.0 F)	tie	31 years	3 of 100 (Routine)
28 December 2008	La Concepcion, MX	daily high max (Tie)	23.9 C (75.0 F)	tie	34 years	3 of 100 (Routine)
22 December 2008	La Concepcion, MX	daily high max	23.9 C (75.0 F)	1.1 C (2.0 F)	24 years	15 of 100 (Routine)
21 December 2008	La Concepcion, MX	daily high max	23.9 C (75.0 F)	2.2 C (4.0 F)	24 years	20 of 100 (Routine)
20 December 2008	La Concepcion, MX	daily high max	25.6 C (78.1 F)	3.4 C (6.1 F)	13 years	21 of 100 (Routine)
19 December 2008	La Concepcion, MX	daily high max	25.0 C (77.0 F)	3.3 C (5.9 F)	21 years	24 of 100 (Routine)
17 December 2008	La Concepcion, MX	daily high max	25.0 C (77.0 F)	1.7 C (3.1 F)	21 years	16 of 100 (Routine)
16 December 2008	La Concepcion, MX	daily high max	25.0 C (77.0 F)	2.8 C (5.0 F)	7 years	17 of 100 (Routine)
15 December 2008	La Concepcion, MX	daily high max	25.6 C (78.1 F)	0.6 C (1.1 F)	17 years	10 of 100 (Routine)
12 December 2008	La Concepcion, MX	daily low min (Tie)	-3.3 C (26.1 F)	tie	33 years	3 of 100 (Routine)
9 December 2008	La Concepcion, MX	daily high min	7.8 C (46.0 F)	1.1 C (2.0 F)	30 years	15 of 100 (Routine)
9 December 2008	La Concepcion, MX	daily high max	23.3 C (73.9 F)	1.1 C (2.0 F)	11 years	11 of 100 (Routine)
4 December 2008	La Concepcion, MX	daily high max	24.4 C (75.9 F)	1.6 C (2.9 F)	13 years	13 of 100 (Routine)
1 December 2008	La Concepcion, MX	daily high max (Tie)	23.9 C (75.0 F)	tie	17 years	2 of 100 (Routine)
24 September 2008	La Concepcion, MX	daily high min (Tie)	12.2 C (54.0 F)	tie	5 years	1 of 100 (Routine)
22 September 2008	La Concepcion, MX	daily high min (Tie)	12.2 C (54.0 F)	tie	15 years	1 of 100 (Routine)
21 September 2008	La Concepcion, MX	daily high min (Tie)	11.7 C (53.1 F)	tie	29 years	2 of 100 (Routine)
16 September 2008	La Concepcion, MX	daily rain	34.8 mm (1.4 in)	8.6 mm (0.34 in)	18 years	15 of 100 (Routine)
15 September 2008	La Concepcion, MX	daily high min (Tie)	12.8 C (55.0 F)	tie	10 years	1 of 100 (Routine)
13 September 2008	La Concepcion, MX	daily high min (Tie)	13.3 C (55.9 F)	tie	28 years	2 of 100 (Routine)

Climate Trend

19 complete years, 1974 to 2006

One stripe for each of 19 complete years at La Concepcion, 1974 to 2006. Blue stripes are years cooler than the station's own mean of 13.8 C (56.9 F); red stripes are warmer. The coolest year was 1984, at 13.0 C (55.4 F), and the warmest was 1978, at 14.8 C (58.6 F). The strongest colour marks a difference of 1.0 C (1.8 F).

Annual mean temperature at La Concepcion as warming stripes, 1974 to 2006
Year	Annual mean temperature	Difference from the station mean
1974	13.8 C	-0.07 C
1975	14.0 C	+0.17 C
1976	13.9 C	+0.07 C
1978	14.8 C	+0.93 C
1979	14.7 C	+0.85 C
1983	13.5 C	-0.38 C
1984	13.0 C	-0.82 C
1994	13.6 C	-0.21 C
1995	13.8 C	-0.03 C
1996	13.4 C	-0.44 C
1997	14.1 C	+0.27 C
1998	14.6 C	+0.77 C
1999	13.4 C	-0.39 C
2000	13.9 C	+0.09 C
2001	13.4 C	-0.46 C
2003	13.9 C	+0.11 C
2004	13.5 C	-0.30 C
2005	13.8 C	-0.01 C
2006	13.6 C	-0.23 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 2008

Yearly extremes at La Concepcion: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	33.3 C (91.9 F)	1998	30.0 C (86.0 F)	36
Coldest night (TNn)	-8.9 C (16.0 F)	1986	-5.6 C (21.9 F)	36
Wettest day (Rx1day)	124.2 mm (4.9 in)	1990	58.6 mm (2.3 in)	36
Wettest five days (Rx5day)	188.5 mm (7.4 in)	1983	107.8 mm (4.2 in)	36
Longest dry spell (CDD)	134 days	1998	52 days	36

Hottest day (TXx)

The hottest day of the year at La Concepcion, 1973 to 2008. The record is 33.3 C (91.9 F) in 1998, marked on the chart; the median year is 30.0 C (86.0 F).

Hottest day (TXx) at La Concepcion by year
Year	Hottest day (TXx)
1973	30.0 C (86.0 F)
1974	30.0 C (86.0 F)
1975	30.6 C (87.1 F)
1976	28.9 C (84.0 F)
1977	30.0 C (86.0 F)
1978	30.0 C (86.0 F)
1979	30.0 C (86.0 F)
1980	28.9 C (84.0 F)
1981	29.4 C (84.9 F)
1982	30.0 C (86.0 F)
1983	31.1 C (88.0 F)
1984	27.2 C (81.0 F)
1985	28.3 C (82.9 F)
1986	28.3 C (82.9 F)
1987	27.2 C (81.0 F)
1988	28.3 C (82.9 F)
1989	25.0 C (77.0 F)
1990	28.9 C (84.0 F)
1991	25.6 C (78.1 F)
1992	27.2 C (81.0 F)
1993	30.0 C (86.0 F)
1994	30.0 C (86.0 F)
1995	30.0 C (86.0 F)
1996	30.0 C (86.0 F)
1997	29.4 C (84.9 F)
1998	33.3 C (91.9 F)
1999	30.6 C (87.1 F)
2000	30.6 C (87.1 F)
2001	30.0 C (86.0 F)
2002	30.0 C (86.0 F)
2003	30.6 C (87.1 F)
2004	27.8 C (82.0 F)
2005	30.0 C (86.0 F)
2006	28.9 C (84.0 F)
2007	28.9 C (84.0 F)
2008	29.4 C (84.9 F)

Coldest night (TNn)

The coldest night of the year at La Concepcion, 1973 to 2008. The record is -8.9 C (16.0 F) in 1986, marked on the chart; the median year is -5.6 C (21.9 F).

Coldest night (TNn) at La Concepcion by year
Year	Coldest night (TNn)
1973	-4.4 C (24.1 F)
1974	-4.4 C (24.1 F)
1975	-7.2 C (19.0 F)
1976	-8.3 C (17.1 F)
1977	-3.3 C (26.1 F)
1978	-3.3 C (26.1 F)
1979	-4.4 C (24.1 F)
1980	-5.0 C (23.0 F)
1981	-4.4 C (24.1 F)
1982	-5.0 C (23.0 F)
1983	-7.2 C (19.0 F)
1984	-5.0 C (23.0 F)
1985	-3.9 C (25.0 F)
1986	-8.9 C (16.0 F)
1987	-7.8 C (18.0 F)
1988	-7.8 C (18.0 F)
1989	-5.6 C (21.9 F)
1990	-8.9 C (16.0 F)
1991	-2.8 C (27.0 F)
1992	-8.9 C (16.0 F)
1993	-5.6 C (21.9 F)
1994	-5.0 C (23.0 F)
1995	-5.0 C (23.0 F)
1996	-7.2 C (19.0 F)
1997	-7.2 C (19.0 F)
1998	-7.8 C (18.0 F)
1999	-7.8 C (18.0 F)
2000	-6.1 C (21.0 F)
2001	-4.4 C (24.1 F)
2002	-5.6 C (21.9 F)
2003	-6.7 C (19.9 F)
2004	-6.1 C (21.0 F)
2005	-4.4 C (24.1 F)
2006	-8.3 C (17.1 F)
2007	-3.9 C (25.0 F)
2008	-5.0 C (23.0 F)

Wettest day (Rx1day)

The wettest day of the year at La Concepcion, 1973 to 2008. The record is 124.2 mm (4.9 in) in 1990, marked on the chart; the median year is 58.6 mm (2.3 in).

Wettest day (Rx1day) at La Concepcion by year
Year	Wettest day (Rx1day)
1973	36.3 mm (1.4 in)
1974	38.1 mm (1.5 in)
1975	65.8 mm (2.6 in)
1976	53.8 mm (2.1 in)
1977	74.4 mm (2.9 in)
1978	57.9 mm (2.3 in)
1979	72.9 mm (2.9 in)
1980	52.8 mm (2.1 in)
1981	42.4 mm (1.7 in)
1982	38.4 mm (1.5 in)
1983	109.0 mm (4.3 in)
1984	49.8 mm (2.0 in)
1985	71.6 mm (2.8 in)
1986	59.2 mm (2.3 in)
1987	54.1 mm (2.1 in)
1988	59.9 mm (2.4 in)
1989	61.0 mm (2.4 in)
1990	124.2 mm (4.9 in)
1991	75.7 mm (3.0 in)
1992	38.9 mm (1.5 in)
1993	32.5 mm (1.3 in)
1994	59.9 mm (2.4 in)
1995	90.2 mm (3.6 in)
1996	71.9 mm (2.8 in)
1997	49.0 mm (1.9 in)
1998	45.5 mm (1.8 in)
1999	50.0 mm (2.0 in)
2000	49.8 mm (2.0 in)
2001	70.9 mm (2.8 in)
2002	65.8 mm (2.6 in)
2003	76.7 mm (3.0 in)
2004	65.0 mm (2.6 in)
2005	79.2 mm (3.1 in)
2006	47.8 mm (1.9 in)
2007	53.6 mm (2.1 in)
2008	44.2 mm (1.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at La Concepcion, 1973 to 2008. The record is 188.5 mm (7.4 in) in 1983, marked on the chart; the median year is 107.8 mm (4.2 in).

Wettest five days (Rx5day) at La Concepcion by year
Year	Wettest five days (Rx5day)
1973	104.2 mm (4.1 in)
1974	84.3 mm (3.3 in)
1975	147.9 mm (5.8 in)
1976	171.7 mm (6.8 in)
1977	123.2 mm (4.9 in)
1978	126.7 mm (5.0 in)
1979	155.5 mm (6.1 in)
1980	72.9 mm (2.9 in)
1981	118.6 mm (4.7 in)
1982	84.2 mm (3.3 in)
1983	188.5 mm (7.4 in)
1984	94.8 mm (3.7 in)
1985	138.5 mm (5.5 in)
1986	114.1 mm (4.5 in)
1987	119.7 mm (4.7 in)
1988	82.0 mm (3.2 in)
1989	68.4 mm (2.7 in)
1990	173.7 mm (6.8 in)
1991	137.2 mm (5.4 in)
1992	63.6 mm (2.5 in)
1993	90.0 mm (3.5 in)
1994	117.6 mm (4.6 in)
1995	162.7 mm (6.4 in)
1996	110.5 mm (4.4 in)
1997	72.4 mm (2.9 in)
1998	100.4 mm (4.0 in)
1999	67.3 mm (2.6 in)
2000	71.9 mm (2.8 in)
2001	138.9 mm (5.5 in)
2002	130.6 mm (5.1 in)
2003	119.4 mm (4.7 in)
2004	105.1 mm (4.1 in)
2005	89.6 mm (3.5 in)
2006	104.5 mm (4.1 in)
2007	88.5 mm (3.5 in)
2008	102.9 mm (4.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at La Concepcion, 1973 to 2008. The record is 134 days in 1998, marked on the chart; the median year is 52 days.

Longest dry spell (CDD) at La Concepcion by year
Year	Longest dry spell (CDD)
1973	70 days
1974	44 days
1975	65 days
1976	42 days
1977	32 days
1978	43 days
1979	61 days
1980	40 days
1981	31 days
1982	37 days
1983	52 days
1984	91 days
1985	40 days
1986	43 days
1987	13 days
1988	58 days
1989	31 days
1990	6 days
1991	11 days
1992	5 days
1993	53 days
1994	52 days
1995	34 days
1996	62 days
1997	52 days
1998	134 days
1999	84 days
2000	55 days
2001	56 days
2002	56 days
2003	75 days
2004	54 days
2005	82 days
2006	57 days
2007	34 days
2008	104 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 Concepcion standing records by year: CSV or JSON. Field meanings are on the data page.
Data for La Concepcion 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).