El Pilon Weather Records (MXN00028149)

Record envelope, standing records and threshold days for El Pilon (MXN00028149), Mexico, with 36 years of record.

Key Facts for El Pilon

El Pilon (MXN00028149) is a weather station in Mexico at 24.20 latitude and -99.02 longitude, 70 m (229 ft) above sea level.
The station reports from 1974 to 2009, 36 years of record.
1,464 records set at El Pilon still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
El Pilon set a daily record precipitation of 3.6 mm (0.14 in) on 28 December 2009.

About the Station

Location: Mexico, 24.20 latitude, -99.02 longitude.
Elevation: 70 m (229 ft).
Period of record: 1974 to 2009, 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 El Pilon. 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 El Pilon, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	36.7 C (98.1 F)	-3.9 C (25.0 F)	n/a	n/a
Feb	39.4 C (102.9 F)	-3.3 C (26.1 F)	n/a	n/a
Mar	43.9 C (111.0 F)	0.6 C (33.1 F)	n/a	n/a
Apr	45.6 C (114.1 F)	3.9 C (39.0 F)	n/a	n/a
May	48.3 C (118.9 F)	12.2 C (54.0 F)	n/a	n/a
Jun	46.7 C (116.1 F)	15.6 C (60.1 F)	n/a	n/a
Jul	42.8 C (109.0 F)	18.3 C (64.9 F)	n/a	n/a
Aug	43.3 C (109.9 F)	17.8 C (64.0 F)	n/a	n/a
Sep	42.2 C (108.0 F)	10.6 C (51.1 F)	n/a	n/a
Oct	40.0 C (104.0 F)	0.6 C (33.1 F)	n/a	n/a
Nov	37.8 C (100.0 F)	-1.7 C (28.9 F)	n/a	n/a
Dec	35.6 C (96.1 F)	-5.0 C (23.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at El Pilon still stand. 1976 holds the most, with 83.

Standing records at El Pilon by the year they were set
Year set	Standing records
1974	18
1975	57
1976	83
1977	38
1978	40
1979	41
1980	53
1981	39
1982	55
1983	39
1984	51
1985	36
1986	33
1987	35
1988	41
1989	29
1990	45
1991	42
1992	31
1993	5
1994	24
1995	52
1996	45
1997	58
1998	64
1999	50
2000	43
2001	47
2002	36
2003	43
2004	38
2005	38
2006	43
2007	21
2008	38
2009	13

Wettest Day of Each Month

Jun: 143.8 mm (5.7 in)

The wettest day on record for each calendar month at El Pilon. The most was 143.8 mm (5.7 in) on 16 June 1981.

Record daily precipitation for each month at El Pilon
Month	Record daily precipitation (mm)	Date
Jan	44.7 mm (1.8 in)	30 January 1984
Feb	52.8 mm (2.1 in)	10 February 2007
Mar	79.8 mm (3.1 in)	11 March 1997
Apr	83.3 mm (3.3 in)	8 April 1985
May	96.8 mm (3.8 in)	27 May 1983
Jun	143.8 mm (5.7 in)	16 June 1981
Jul	102.1 mm (4.0 in)	23 July 1989
Aug	101.1 mm (4.0 in)	23 August 1996
Sep	108.5 mm (4.3 in)	16 September 1988
Oct	102.4 mm (4.0 in)	22 October 1992
Nov	41.1 mm (1.6 in)	21 November 1977
Dec	83.6 mm (3.3 in)	2 December 1979

Period of Record Coverage

1974 to 2009

36 years of record at El Pilon, 1974 to 2009. 12 years have data for under 90 percent of days and are left out of rankings: 1974, 1989, 1992, 1993, 1994, 2001, 2003, 2004 and others.

Days with data per year at El Pilon
Year	Days with data	Share of year	Complete
1974	175	48%	No
1975	363	99%	Yes
1976	362	99%	Yes
1977	362	99%	Yes
1978	359	98%	Yes
1979	360	99%	Yes
1980	357	98%	Yes
1981	361	99%	Yes
1982	358	98%	Yes
1983	362	99%	Yes
1984	362	99%	Yes
1985	359	98%	Yes
1986	361	99%	Yes
1987	362	99%	Yes
1988	362	99%	Yes
1989	184	50%	No
1990	364	100%	Yes
1991	365	100%	Yes
1992	315	86%	No
1993	68	19%	No
1994	208	57%	No
1995	364	100%	Yes
1996	365	100%	Yes
1997	365	100%	Yes
1998	361	99%	Yes
1999	363	99%	Yes
2000	353	96%	Yes
2001	318	87%	No
2002	346	95%	Yes
2003	310	85%	No
2004	324	89%	No
2005	330	90%	Yes
2006	314	86%	No
2007	323	88%	No
2008	329	90%	No
2009	292	80%	No

Latest Records

Latest records at El Pilon
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
28 December 2009	El Pilon, MX	daily rain	3.6 mm (0.14 in)	0.3 mm (0.01 in)	27 years	11 of 100 (Routine)
19 December 2009	El Pilon, MX	daily rain	5.1 mm (0.20 in)	2.3 mm (0.09 in)	34 years	14 of 100 (Routine)
16 December 2009	El Pilon, MX	daily rain	24.1 mm (0.9 in)	22.8 mm (0.9 in)	32 years	20 of 100 (Routine)
15 December 2009	El Pilon, MX	daily rain	1.8 mm (0.07 in)	1.0 mm (0.04 in)	30 years	12 of 100 (Routine)
6 December 2009	El Pilon, MX	daily low min	0.0 C (32.0 F)	1.7 C (3.1 F)	10 years	9 of 100 (Routine)
5 December 2009	El Pilon, MX	daily low min	0.0 C (32.0 F)	2.2 C (4.0 F)	19 years	12 of 100 (Routine)
4 December 2009	El Pilon, MX	daily low max	10.0 C (50.0 F)	2.2 C (4.0 F)	8 years	8 of 100 (Routine)
24 October 2009	El Pilon, MX	daily low max	21.1 C (70.0 F)	1.1 C (2.0 F)	3 years	6 of 100 (Routine)
16 October 2009	El Pilon, MX	daily rain	16.3 mm (0.6 in)	14.8 mm (0.6 in)	24 years	19 of 100 (Routine)
15 October 2009	El Pilon, MX	daily high max	36.1 C (97.0 F)	1.1 C (2.0 F)	24 years	13 of 100 (Routine)
15 October 2009	El Pilon, MX	daily high min (Tie)	23.9 C (75.0 F)	tie	24 years	2 of 100 (Routine)
7 October 2009	El Pilon, MX	daily high min	24.4 C (75.9 F)	0.5 C (0.9 F)	28 years	12 of 100 (Routine)
2 October 2009	El Pilon, MX	daily high min (Tie)	25.0 C (77.0 F)	tie	23 years	2 of 100 (Routine)
23 September 2009	El Pilon, MX	daily low max	23.3 C (73.9 F)	0.6 C (1.1 F)	31 years	13 of 100 (Routine)
11 September 2009	El Pilon, MX	daily rain	38.1 mm (1.5 in)	6.9 mm (0.27 in)	8 years	8 of 100 (Routine)
15 August 2009	El Pilon, MX	daily high max (Tie)	40.0 C (104.0 F)	tie	11 years	1 of 100 (Routine)
5 August 2009	El Pilon, MX	daily high max (Tie)	40.0 C (104.0 F)	tie	32 years	3 of 100 (Routine)
31 July 2009	El Pilon, MX	daily high min	26.7 C (80.1 F)	1.1 C (2.0 F)	27 years	18 of 100 (Routine)
30 July 2009	El Pilon, MX	daily high min	26.1 C (79.0 F)	0.5 C (0.9 F)	23 years	12 of 100 (Routine)
30 July 2009	El Pilon, MX	daily high max (Tie)	40.6 C (105.1 F)	tie	14 years	1 of 100 (Routine)

Climate Trend

22 complete years, 1975 to 2000

One stripe for each of 22 complete years at El Pilon, 1975 to 2000. Blue stripes are years cooler than the station's own mean of 24.5 C (76.1 F); red stripes are warmer. The coolest year was 1976, at 23.2 C (73.8 F), and the warmest was 1998, at 25.9 C (78.6 F). The strongest colour marks a difference of 1.4 C (2.5 F).

Annual mean temperature at El Pilon as warming stripes, 1975 to 2000
Year	Annual mean temperature	Difference from the station mean
1975	24.6 C	+0.08 C
1976	23.2 C	-1.31 C
1977	24.4 C	-0.14 C
1978	24.3 C	-0.25 C
1979	24.2 C	-0.32 C
1980	24.5 C	-0.06 C
1981	24.3 C	-0.26 C
1982	24.6 C	+0.03 C
1983	24.2 C	-0.34 C
1984	24.0 C	-0.48 C
1985	24.3 C	-0.21 C
1986	24.6 C	+0.10 C
1987	24.0 C	-0.57 C
1988	24.3 C	-0.23 C
1990	25.1 C	+0.61 C
1991	24.8 C	+0.31 C
1995	25.3 C	+0.77 C
1996	25.1 C	+0.54 C
1997	24.1 C	-0.44 C
1998	25.9 C	+1.37 C
1999	24.3 C	-0.19 C
2000	25.5 C	+1.01 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

1974 to 2009

Yearly extremes at El Pilon: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	48.3 C (118.9 F)	1998	42.5 C (108.5 F)	36
Coldest night (TNn)	-5.0 C (23.0 F)	1989	0.6 C (33.1 F)	36
Wettest day (Rx1day)	143.8 mm (5.7 in)	1981	75.7 mm (3.0 in)	36
Wettest five days (Rx5day)	259.0 mm (10.2 in)	2003	118.6 mm (4.7 in)	36
Longest dry spell (CDD)	84 days	1996	39 days	36

Hottest day (TXx)

The hottest day of the year at El Pilon, 1974 to 2009. The record is 48.3 C (118.9 F) in 1998, marked on the chart; the median year is 42.5 C (108.5 F).

Hottest day (TXx) at El Pilon by year
Year	Hottest day (TXx)
1974	40.0 C (104.0 F)
1975	43.9 C (111.0 F)
1976	40.0 C (104.0 F)
1977	42.8 C (109.0 F)
1978	45.0 C (113.0 F)
1979	44.4 C (111.9 F)
1980	41.1 C (106.0 F)
1981	39.4 C (102.9 F)
1982	41.7 C (107.1 F)
1983	40.6 C (105.1 F)
1984	45.0 C (113.0 F)
1985	40.0 C (104.0 F)
1986	40.0 C (104.0 F)
1987	41.1 C (106.0 F)
1988	42.2 C (108.0 F)
1989	41.7 C (107.1 F)
1990	41.1 C (106.0 F)
1991	45.6 C (114.1 F)
1992	41.1 C (106.0 F)
1993	35.6 C (96.1 F)
1994	41.7 C (107.1 F)
1995	45.0 C (113.0 F)
1996	42.2 C (108.0 F)
1997	43.3 C (109.9 F)
1998	48.3 C (118.9 F)
1999	43.9 C (111.0 F)
2000	42.8 C (109.0 F)
2001	43.3 C (109.9 F)
2002	44.4 C (111.9 F)
2003	43.3 C (109.9 F)
2004	45.6 C (114.1 F)
2005	42.8 C (109.0 F)
2006	43.3 C (109.9 F)
2007	40.6 C (105.1 F)
2008	42.8 C (109.0 F)
2009	40.6 C (105.1 F)

Coldest night (TNn)

The coldest night of the year at El Pilon, 1974 to 2009. The record is -5.0 C (23.0 F) in 1989, marked on the chart; the median year is 0.6 C (33.1 F).

Coldest night (TNn) at El Pilon by year
Year	Coldest night (TNn)
1974	-1.7 C (28.9 F)
1975	-3.9 C (25.0 F)
1976	-3.3 C (26.1 F)
1977	-1.1 C (30.0 F)
1978	0.6 C (33.1 F)
1979	0.0 C (32.0 F)
1980	2.2 C (36.0 F)
1981	1.7 C (35.1 F)
1982	-2.2 C (28.0 F)
1983	-2.8 C (27.0 F)
1984	1.7 C (35.1 F)
1985	-1.7 C (28.9 F)
1986	1.1 C (34.0 F)
1987	0.6 C (33.1 F)
1988	1.7 C (35.1 F)
1989	-5.0 C (23.0 F)
1990	0.0 C (32.0 F)
1991	3.3 C (37.9 F)
1992	1.7 C (35.1 F)
1993	0.6 C (33.1 F)
1994	5.0 C (41.0 F)
1995	3.3 C (37.9 F)
1996	-2.2 C (28.0 F)
1997	-3.3 C (26.1 F)
1998	1.1 C (34.0 F)
1999	-1.1 C (30.0 F)
2000	0.6 C (33.1 F)
2001	1.7 C (35.1 F)
2002	3.9 C (39.0 F)
2003	1.1 C (34.0 F)
2004	6.1 C (43.0 F)
2005	5.0 C (41.0 F)
2006	0.0 C (32.0 F)
2007	4.4 C (39.9 F)
2008	0.0 C (32.0 F)
2009	0.0 C (32.0 F)

Wettest day (Rx1day)

The wettest day of the year at El Pilon, 1974 to 2009. The record is 143.8 mm (5.7 in) in 1981, marked on the chart; the median year is 75.7 mm (3.0 in).

Wettest day (Rx1day) at El Pilon by year
Year	Wettest day (Rx1day)
1974	78.5 mm (3.1 in)
1975	56.9 mm (2.2 in)
1976	73.4 mm (2.9 in)
1977	45.7 mm (1.8 in)
1978	82.3 mm (3.2 in)
1979	83.6 mm (3.3 in)
1980	55.4 mm (2.2 in)
1981	143.8 mm (5.7 in)
1982	95.8 mm (3.8 in)
1983	96.8 mm (3.8 in)
1984	47.8 mm (1.9 in)
1985	83.3 mm (3.3 in)
1986	50.8 mm (2.0 in)
1987	64.8 mm (2.6 in)
1988	108.5 mm (4.3 in)
1989	102.1 mm (4.0 in)
1990	52.6 mm (2.1 in)
1991	64.8 mm (2.6 in)
1992	102.4 mm (4.0 in)
1993	49.3 mm (1.9 in)
1994	74.9 mm (2.9 in)
1995	89.4 mm (3.5 in)
1996	101.1 mm (4.0 in)
1997	79.8 mm (3.1 in)
1998	58.4 mm (2.3 in)
1999	8.1 mm (0.32 in)
2000	7.6 mm (0.30 in)
2001	99.3 mm (3.9 in)
2002	99.6 mm (3.9 in)
2003	96.0 mm (3.8 in)
2004	55.4 mm (2.2 in)
2005	76.5 mm (3.0 in)
2006	70.9 mm (2.8 in)
2007	61.0 mm (2.4 in)
2008	97.3 mm (3.8 in)
2009	64.0 mm (2.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at El Pilon, 1974 to 2009. The record is 259.0 mm (10.2 in) in 2003, marked on the chart; the median year is 118.6 mm (4.7 in).

Wettest five days (Rx5day) at El Pilon by year
Year	Wettest five days (Rx5day)
1974	131.3 mm (5.2 in)
1975	140.3 mm (5.5 in)
1976	163.8 mm (6.4 in)
1977	107.0 mm (4.2 in)
1978	163.1 mm (6.4 in)
1979	157.8 mm (6.2 in)
1980	90.4 mm (3.6 in)
1981	182.5 mm (7.2 in)
1982	158.3 mm (6.2 in)
1983	192.1 mm (7.6 in)
1984	118.4 mm (4.7 in)
1985	102.6 mm (4.0 in)
1986	57.6 mm (2.3 in)
1987	95.5 mm (3.8 in)
1988	136.0 mm (5.4 in)
1989	108.5 mm (4.3 in)
1990	83.8 mm (3.3 in)
1991	118.8 mm (4.7 in)
1992	103.9 mm (4.1 in)
1993	54.9 mm (2.2 in)
1994	106.2 mm (4.2 in)
1995	136.7 mm (5.4 in)
1996	169.0 mm (6.7 in)
1997	121.7 mm (4.8 in)
1998	122.2 mm (4.8 in)
1999	22.2 mm (0.9 in)
2000	20.3 mm (0.8 in)
2001	107.7 mm (4.2 in)
2002	209.0 mm (8.2 in)
2003	259.0 mm (10.2 in)
2004	96.8 mm (3.8 in)
2005	160.8 mm (6.3 in)
2006	87.9 mm (3.5 in)
2007	79.2 mm (3.1 in)
2008	206.3 mm (8.1 in)
2009	74.7 mm (2.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at El Pilon, 1974 to 2009. The record is 84 days in 1996, marked on the chart; the median year is 39 days.

Longest dry spell (CDD) at El Pilon by year
Year	Longest dry spell (CDD)
1974	39 days
1975	33 days
1976	50 days
1977	26 days
1978	28 days
1979	48 days
1980	67 days
1981	33 days
1982	50 days
1983	64 days
1984	69 days
1985	58 days
1986	40 days
1987	24 days
1988	53 days
1989	24 days
1990	37 days
1991	33 days
1992	39 days
1993	22 days
1994	27 days
1995	54 days
1996	84 days
1997	30 days
1998	74 days
1999	80 days
2000	33 days
2001	30 days
2002	32 days
2003	30 days
2004	50 days
2005	38 days
2006	50 days
2007	37 days
2008	65 days
2009	66 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 El Pilon standing records by year: CSV or JSON. Field meanings are on the data page.
Data for El Pilon 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 2026-10-14 (14 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).