Santa Maria E-31 Weather Records (MXN00015299)

Record envelope, standing records and threshold days for Santa Maria E-31 (MXN00015299), Mexico, with 31 years of record.

Key Facts for Santa Maria E-31

Santa Maria E-31 (MXN00015299) is a weather station in Mexico at 18.98 latitude and -99.63 longitude, 2,291 m (7,516 ft) above sea level.
The station reports from 1979 to 2009, 31 years of record.
1,464 records set at Santa Maria E-31 still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Mexico, 18.98 latitude, -99.63 longitude.
Elevation: 2,291 m (7,516 ft).
Period of record: 1979 to 2009, 31 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 Santa Maria E-31. 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 Santa Maria E-31, 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)	0.0 C (32.0 F)	n/a	n/a
Feb	28.9 C (84.0 F)	0.0 C (32.0 F)	n/a	n/a
Mar	31.7 C (89.1 F)	0.6 C (33.1 F)	n/a	n/a
Apr	31.7 C (89.1 F)	5.0 C (41.0 F)	n/a	n/a
May	31.7 C (89.1 F)	6.7 C (44.1 F)	n/a	n/a
Jun	30.6 C (87.1 F)	5.6 C (42.1 F)	n/a	n/a
Jul	28.9 C (84.0 F)	5.6 C (42.1 F)	n/a	n/a
Aug	28.9 C (84.0 F)	5.6 C (42.1 F)	n/a	n/a
Sep	28.9 C (84.0 F)	5.6 C (42.1 F)	n/a	n/a
Oct	27.8 C (82.0 F)	1.7 C (35.1 F)	n/a	n/a
Nov	27.8 C (82.0 F)	1.7 C (35.1 F)	n/a	n/a
Dec	25.6 C (78.1 F)	0.0 C (32.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Santa Maria E-31 still stand. 1983 holds the most, with 129.

Standing records at Santa Maria E-31 by the year they were set
Year set	Standing records
1981	29
1982	49
1983	129
1984	59
1985	49
1986	76
1987	71
1988	103
1989	50
1990	52
1991	87
1992	50
1993	38
1994	10
1995	36
1996	28
1997	66
1998	74
1999	35
2000	45
2001	43
2002	31
2003	37
2004	37
2005	65
2006	32
2007	42
2008	26
2009	15

Wettest Day of Each Month

Sep: 110.0 mm (4.3 in)

The wettest day on record for each calendar month at Santa Maria E-31. The most was 110.0 mm (4.3 in) on 1 September 2003.

Record daily precipitation for each month at Santa Maria E-31
Month	Record daily precipitation (mm)	Date
Jan	47.8 mm (1.9 in)	25 January 1992
Feb	37.8 mm (1.5 in)	2 February 1992
Mar	26.9 mm (1.1 in)	31 March 1985
Apr	32.8 mm (1.3 in)	7 April 1997
May	33.8 mm (1.3 in)	2 May 1986
Jun	88.9 mm (3.5 in)	27 June 1986
Jul	89.9 mm (3.5 in)	18 July 2007
Aug	64.8 mm (2.6 in)	16 August 1988
Sep	110.0 mm (4.3 in)	1 September 2003
Oct	77.0 mm (3.0 in)	9 October 2008
Nov	69.9 mm (2.8 in)	4 November 2002
Dec	19.8 mm (0.8 in)	3 December 1979

Period of Record Coverage

1981 to 2009

29 years of record at Santa Maria E-31, 1981 to 2009. 6 years have data for under 90 percent of days and are left out of rankings: 1981, 1982, 1993, 1994, 1996, 2009.

Days with data per year at Santa Maria E-31
Year	Days with data	Share of year	Complete
1981	109	30%	No
1982	149	41%	No
1983	358	98%	Yes
1984	366	100%	Yes
1985	334	92%	Yes
1986	364	100%	Yes
1987	365	100%	Yes
1988	364	99%	Yes
1989	329	90%	Yes
1990	365	100%	Yes
1991	365	100%	Yes
1992	365	100%	Yes
1993	155	42%	No
1994	178	49%	No
1995	361	99%	Yes
1996	328	90%	No
1997	346	95%	Yes
1998	343	94%	Yes
1999	347	95%	Yes
2000	351	96%	Yes
2001	365	100%	Yes
2002	365	100%	Yes
2003	365	100%	Yes
2004	366	100%	Yes
2005	334	92%	Yes
2006	365	100%	Yes
2007	365	100%	Yes
2008	363	99%	Yes
2009	181	50%	No

Latest Records

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

Climate Trend

20 complete years, 1983 to 2008

One stripe for each of 20 complete years at Santa Maria E-31, 1983 to 2008. Blue stripes are years cooler than the station's own mean of 15.7 C (60.3 F); red stripes are warmer. The coolest year was 1992, at 15.0 C (58.9 F), and the warmest was 2007, at 16.3 C (61.3 F). The strongest colour marks a difference of 0.8 C (1.4 F).

Annual mean temperature at Santa Maria E-31 as warming stripes, 1983 to 2008
Year	Annual mean temperature	Difference from the station mean
1983	15.4 C	-0.33 C
1984	15.1 C	-0.61 C
1986	15.4 C	-0.30 C
1987	15.8 C	+0.04 C
1988	16.0 C	+0.21 C
1990	15.7 C	-0.08 C
1991	16.2 C	+0.47 C
1992	15.0 C	-0.79 C
1995	16.1 C	+0.31 C
1997	15.4 C	-0.34 C
1998	16.1 C	+0.32 C
1999	15.3 C	-0.43 C
2000	15.8 C	+0.07 C
2001	15.4 C	-0.39 C
2002	15.9 C	+0.15 C
2003	16.2 C	+0.47 C
2004	16.0 C	+0.25 C
2006	16.1 C	+0.40 C
2007	16.3 C	+0.52 C
2008	15.8 C	+0.03 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

1979 to 2009

Yearly extremes at Santa Maria E-31: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	31.7 C (89.1 F)	1988	30.0 C (86.0 F)	29
Coldest night (TNn)	0.0 C (32.0 F)	1993	1.7 C (35.1 F)	29
Wettest day (Rx1day)	110.0 mm (4.3 in)	2003	49.8 mm (2.0 in)	31
Wettest five days (Rx5day)	185.5 mm (7.3 in)	2003	109.2 mm (4.3 in)	31
Longest dry spell (CDD)	121 days	1988	51 days	31

Hottest day (TXx)

The hottest day of the year at Santa Maria E-31, 1979 to 2009. The record is 31.7 C (89.1 F) in 1988, marked on the chart; the median year is 30.0 C (86.0 F).

Hottest day (TXx) at Santa Maria E-31 by year
Year	Hottest day (TXx)
1979	n/a
1980	n/a
1981	23.9 C (75.0 F)
1982	30.6 C (87.1 F)
1983	31.1 C (88.0 F)
1984	30.0 C (86.0 F)
1985	28.9 C (84.0 F)
1986	30.0 C (86.0 F)
1987	30.0 C (86.0 F)
1988	31.7 C (89.1 F)
1989	31.7 C (89.1 F)
1990	28.9 C (84.0 F)
1991	31.7 C (89.1 F)
1992	28.9 C (84.0 F)
1993	25.6 C (78.1 F)
1994	31.1 C (88.0 F)
1995	30.0 C (86.0 F)
1996	26.7 C (80.1 F)
1997	27.8 C (82.0 F)
1998	30.6 C (87.1 F)
1999	27.8 C (82.0 F)
2000	27.8 C (82.0 F)
2001	27.8 C (82.0 F)
2002	30.0 C (86.0 F)
2003	30.6 C (87.1 F)
2004	28.9 C (84.0 F)
2005	30.6 C (87.1 F)
2006	28.9 C (84.0 F)
2007	30.0 C (86.0 F)
2008	30.6 C (87.1 F)
2009	30.0 C (86.0 F)

Coldest night (TNn)

The coldest night of the year at Santa Maria E-31, 1979 to 2009. The record is 0.0 C (32.0 F) in 1993, marked on the chart; the median year is 1.7 C (35.1 F).

Coldest night (TNn) at Santa Maria E-31 by year
Year	Coldest night (TNn)
1979	n/a
1980	n/a
1981	5.0 C (41.0 F)
1982	6.7 C (44.1 F)
1983	0.6 C (33.1 F)
1984	2.8 C (37.0 F)
1985	3.9 C (39.0 F)
1986	0.6 C (33.1 F)
1987	2.8 C (37.0 F)
1988	0.6 C (33.1 F)
1989	3.9 C (39.0 F)
1990	2.8 C (37.0 F)
1991	3.9 C (39.0 F)
1992	1.7 C (35.1 F)
1993	0.0 C (32.0 F)
1994	5.0 C (41.0 F)
1995	2.8 C (37.0 F)
1996	1.1 C (34.0 F)
1997	0.0 C (32.0 F)
1998	1.7 C (35.1 F)
1999	0.6 C (33.1 F)
2000	1.7 C (35.1 F)
2001	1.7 C (35.1 F)
2002	2.8 C (37.0 F)
2003	2.8 C (37.0 F)
2004	0.0 C (32.0 F)
2005	0.0 C (32.0 F)
2006	1.7 C (35.1 F)
2007	2.8 C (37.0 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 Santa Maria E-31, 1979 to 2009. The record is 110.0 mm (4.3 in) in 2003, marked on the chart; the median year is 49.8 mm (2.0 in).

Wettest day (Rx1day) at Santa Maria E-31 by year
Year	Wettest day (Rx1day)
1979	20.3 mm (0.8 in)
1980	41.4 mm (1.6 in)
1981	36.8 mm (1.4 in)
1982	39.9 mm (1.6 in)
1983	35.8 mm (1.4 in)
1984	49.8 mm (2.0 in)
1985	34.8 mm (1.4 in)
1986	88.9 mm (3.5 in)
1987	75.9 mm (3.0 in)
1988	64.8 mm (2.6 in)
1989	41.9 mm (1.6 in)
1990	39.9 mm (1.6 in)
1991	42.9 mm (1.7 in)
1992	47.8 mm (1.9 in)
1993	25.9 mm (1.0 in)
1994	38.9 mm (1.5 in)
1995	49.8 mm (2.0 in)
1996	59.9 mm (2.4 in)
1997	49.8 mm (2.0 in)
1998	75.9 mm (3.0 in)
1999	31.8 mm (1.3 in)
2000	46.0 mm (1.8 in)
2001	59.9 mm (2.4 in)
2002	69.9 mm (2.8 in)
2003	110.0 mm (4.3 in)
2004	79.8 mm (3.1 in)
2005	78.0 mm (3.1 in)
2006	54.9 mm (2.2 in)
2007	89.9 mm (3.5 in)
2008	77.0 mm (3.0 in)
2009	74.9 mm (2.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Santa Maria E-31, 1979 to 2009. The record is 185.5 mm (7.3 in) in 2003, marked on the chart; the median year is 109.2 mm (4.3 in).

Wettest five days (Rx5day) at Santa Maria E-31 by year
Year	Wettest five days (Rx5day)
1979	44.2 mm (1.7 in)
1980	144.1 mm (5.7 in)
1981	79.1 mm (3.1 in)
1982	84.6 mm (3.3 in)
1983	99.5 mm (3.9 in)
1984	108.2 mm (4.3 in)
1985	105.4 mm (4.1 in)
1986	127.3 mm (5.0 in)
1987	122.7 mm (4.8 in)
1988	143.3 mm (5.6 in)
1989	109.2 mm (4.3 in)
1990	113.3 mm (4.5 in)
1991	89.5 mm (3.5 in)
1992	136.3 mm (5.4 in)
1993	100.4 mm (4.0 in)
1994	86.4 mm (3.4 in)
1995	130.4 mm (5.1 in)
1996	82.3 mm (3.2 in)
1997	97.4 mm (3.8 in)
1998	160.5 mm (6.3 in)
1999	86.4 mm (3.4 in)
2000	145.5 mm (5.7 in)
2001	132.3 mm (5.2 in)
2002	106.5 mm (4.2 in)
2003	185.5 mm (7.3 in)
2004	130.2 mm (5.1 in)
2005	137.5 mm (5.4 in)
2006	89.4 mm (3.5 in)
2007	108.5 mm (4.3 in)
2008	170.4 mm (6.7 in)
2009	143.2 mm (5.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Santa Maria E-31, 1979 to 2009. The record is 121 days in 1988, marked on the chart; the median year is 51 days.

Longest dry spell (CDD) at Santa Maria E-31 by year
Year	Longest dry spell (CDD)
1979	36 days
1980	51 days
1981	25 days
1982	16 days
1983	72 days
1984	62 days
1985	44 days
1986	52 days
1987	37 days
1988	121 days
1989	58 days
1990	47 days
1991	105 days
1992	26 days
1993	58 days
1994	58 days
1995	50 days
1996	54 days
1997	40 days
1998	93 days
1999	40 days
2000	117 days
2001	50 days
2002	48 days
2003	94 days
2004	42 days
2005	50 days
2006	84 days
2007	56 days
2008	71 days
2009	36 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 Santa Maria E-31 standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Santa Maria E-31 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).