Merida Santiago Weather Records (MXN00031079)

Record envelope, standing records and threshold days for Merida Santiago (MXN00031079), Mexico, with 32 years of record.

Key Facts for Merida Santiago

Merida Santiago (MXN00031079) is a weather station in Mexico at 20.98 latitude and -89.58 longitude, 10 m (32 ft) above sea level.
The station reports from 1982 to 2013, 32 years of record.
1,464 records set at Merida Santiago still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Mexico, 20.98 latitude, -89.58 longitude.
Elevation: 10 m (32 ft).
Period of record: 1982 to 2013, 32 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 Merida Santiago. 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 Merida Santiago, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	39.4 C (102.9 F)	5.6 C (42.1 F)	n/a	n/a
Feb	38.3 C (100.9 F)	5.0 C (41.0 F)	n/a	n/a
Mar	40.6 C (105.1 F)	6.7 C (44.1 F)	n/a	n/a
Apr	42.2 C (108.0 F)	11.1 C (52.0 F)	n/a	n/a
May	43.3 C (109.9 F)	16.7 C (62.1 F)	n/a	n/a
Jun	40.0 C (104.0 F)	18.9 C (66.0 F)	n/a	n/a
Jul	38.3 C (100.9 F)	18.9 C (66.0 F)	n/a	n/a
Aug	39.4 C (102.9 F)	17.8 C (64.0 F)	n/a	n/a
Sep	38.9 C (102.0 F)	18.3 C (64.9 F)	n/a	n/a
Oct	38.3 C (100.9 F)	12.8 C (55.0 F)	n/a	n/a
Nov	37.8 C (100.0 F)	10.0 C (50.0 F)	n/a	n/a
Dec	35.0 C (95.0 F)	7.8 C (46.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Merida Santiago still stand. 2009 holds the most, with 116.

Standing records at Merida Santiago by the year they were set
Year set	Standing records
1982	43
1983	113
1984	109
1985	92
1986	82
1987	83
1988	51
2000	71
2001	48
2002	59
2003	73
2004	47
2005	62
2006	63
2007	61
2008	66
2009	116
2010	91
2011	73
2012	23
2013	38

Wettest Day of Each Month

Sep: 230.1 mm (9.1 in)

The wettest day on record for each calendar month at Merida Santiago. The most was 230.1 mm (9.1 in) on 22 September 2002.

Record daily precipitation for each month at Merida Santiago
Month	Record daily precipitation (mm)	Date
Jan	68.6 mm (2.7 in)	2 January 1988
Feb	119.1 mm (4.7 in)	7 February 2008
Mar	61.0 mm (2.4 in)	29 March 2003
Apr	72.9 mm (2.9 in)	17 April 2012
May	96.0 mm (3.8 in)	17 May 2010
Jun	120.1 mm (4.7 in)	12 June 1988
Jul	113.0 mm (4.4 in)	31 July 2004
Aug	109.7 mm (4.3 in)	29 August 2003
Sep	230.1 mm (9.1 in)	22 September 2002
Oct	80.8 mm (3.2 in)	8 October 2000
Nov	79.8 mm (3.1 in)	11 November 1986
Dec	52.8 mm (2.1 in)	6 December 1983

Period of Record Coverage

1982 to 2013

21 years of record at Merida Santiago, 1982 to 2013. 5 years have data for under 90 percent of days and are left out of rankings: 1982, 1988, 2001, 2012, 2013.

Days with data per year at Merida Santiago
Year	Days with data	Share of year	Complete
1982	306	84%	No
1983	365	100%	Yes
1984	365	100%	Yes
1985	365	100%	Yes
1986	364	100%	Yes
1987	362	99%	Yes
1988	244	67%	No
2000	366	100%	Yes
2001	273	75%	No
2002	362	99%	Yes
2003	365	100%	Yes
2004	364	99%	Yes
2005	365	100%	Yes
2006	365	100%	Yes
2007	365	100%	Yes
2008	366	100%	Yes
2009	365	100%	Yes
2010	365	100%	Yes
2011	365	100%	Yes
2012	213	58%	No
2013	120	33%	No

Latest Records

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

Climate Trend

14 complete years, 1983 to 2011

One stripe for each of 14 complete years at Merida Santiago, 1983 to 2011. Blue stripes are years cooler than the station's own mean of 27.2 C (81.0 F); red stripes are warmer. The coolest year was 1984, at 26.5 C (79.7 F), and the warmest was 2009, at 28.1 C (82.5 F). The strongest colour marks a difference of 0.9 C (1.6 F).

Annual mean temperature at Merida Santiago as warming stripes, 1983 to 2011
Year	Annual mean temperature	Difference from the station mean
1983	26.9 C	-0.34 C
1984	26.5 C	-0.72 C
1985	27.4 C	+0.15 C
2000	27.1 C	-0.12 C
2002	27.4 C	+0.13 C
2003	27.2 C	-0.05 C
2004	27.3 C	+0.02 C
2005	27.2 C	+0.00 C
2006	27.2 C	-0.07 C
2007	27.4 C	+0.14 C
2008	27.3 C	+0.05 C
2009	28.1 C	+0.83 C
2010	26.6 C	-0.64 C
2011	27.9 C	+0.61 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

1982 to 2013

Yearly extremes at Merida Santiago: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	43.3 C (109.9 F)	2009	40.6 C (105.1 F)	21
Coldest night (TNn)	5.0 C (41.0 F)	2006	8.9 C (48.0 F)	21
Wettest day (Rx1day)	230.1 mm (9.1 in)	2002	79.8 mm (3.1 in)	21
Wettest five days (Rx5day)	336.4 mm (13.2 in)	2002	138.2 mm (5.4 in)	21
Longest dry spell (CDD)	90 days	2011	39 days	21

Hottest day (TXx)

The hottest day of the year at Merida Santiago, 1982 to 2013. The record is 43.3 C (109.9 F) in 2009, marked on the chart; the median year is 40.6 C (105.1 F).

Hottest day (TXx) at Merida Santiago by year
Year	Hottest day (TXx)
1982	40.0 C (104.0 F)
1983	40.6 C (105.1 F)
1984	40.6 C (105.1 F)
1985	39.4 C (102.9 F)
1986	40.6 C (105.1 F)
1987	40.0 C (104.0 F)
1988	42.2 C (108.0 F)
2000	40.6 C (105.1 F)
2001	39.4 C (102.9 F)
2002	40.6 C (105.1 F)
2003	40.0 C (104.0 F)
2004	40.0 C (104.0 F)
2005	42.2 C (108.0 F)
2006	42.2 C (108.0 F)
2007	41.1 C (106.0 F)
2008	41.7 C (107.1 F)
2009	43.3 C (109.9 F)
2010	41.1 C (106.0 F)
2011	42.2 C (108.0 F)
2012	40.0 C (104.0 F)
2013	40.6 C (105.1 F)

Coldest night (TNn)

The coldest night of the year at Merida Santiago, 1982 to 2013. The record is 5.0 C (41.0 F) in 2006, marked on the chart; the median year is 8.9 C (48.0 F).

Coldest night (TNn) at Merida Santiago by year
Year	Coldest night (TNn)
1982	13.3 C (55.9 F)
1983	12.2 C (54.0 F)
1984	12.8 C (55.0 F)
1985	11.1 C (52.0 F)
1986	10.0 C (50.0 F)
1987	12.2 C (54.0 F)
1988	15.0 C (59.0 F)
2000	6.1 C (43.0 F)
2001	6.7 C (44.1 F)
2002	5.6 C (42.1 F)
2003	8.9 C (48.0 F)
2004	8.9 C (48.0 F)
2005	8.9 C (48.0 F)
2006	5.0 C (41.0 F)
2007	8.3 C (46.9 F)
2008	8.9 C (48.0 F)
2009	6.7 C (44.1 F)
2010	7.8 C (46.0 F)
2011	9.4 C (48.9 F)
2012	10.0 C (50.0 F)
2013	7.2 C (45.0 F)

Wettest day (Rx1day)

The wettest day of the year at Merida Santiago, 1982 to 2013. The record is 230.1 mm (9.1 in) in 2002, marked on the chart; the median year is 79.8 mm (3.1 in).

Wettest day (Rx1day) at Merida Santiago by year
Year	Wettest day (Rx1day)
1982	52.6 mm (2.1 in)
1983	70.1 mm (2.8 in)
1984	78.7 mm (3.1 in)
1985	65.3 mm (2.6 in)
1986	79.8 mm (3.1 in)
1987	56.4 mm (2.2 in)
1988	120.1 mm (4.7 in)
2000	80.8 mm (3.2 in)
2001	48.3 mm (1.9 in)
2002	230.1 mm (9.1 in)
2003	109.7 mm (4.3 in)
2004	113.0 mm (4.4 in)
2005	102.6 mm (4.0 in)
2006	67.6 mm (2.7 in)
2007	93.5 mm (3.7 in)
2008	119.1 mm (4.7 in)
2009	59.9 mm (2.4 in)
2010	104.4 mm (4.1 in)
2011	128.3 mm (5.1 in)
2012	72.9 mm (2.9 in)
2013	36.8 mm (1.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Merida Santiago, 1982 to 2013. The record is 336.4 mm (13.2 in) in 2002, marked on the chart; the median year is 138.2 mm (5.4 in).

Wettest five days (Rx5day) at Merida Santiago by year
Year	Wettest five days (Rx5day)
1982	83.1 mm (3.3 in)
1983	138.8 mm (5.5 in)
1984	239.5 mm (9.4 in)
1985	98.6 mm (3.9 in)
1986	86.4 mm (3.4 in)
1987	97.2 mm (3.8 in)
1988	185.1 mm (7.3 in)
2000	105.2 mm (4.1 in)
2001	77.1 mm (3.0 in)
2002	336.4 mm (13.2 in)
2003	163.8 mm (6.4 in)
2004	168.5 mm (6.6 in)
2005	177.0 mm (7.0 in)
2006	102.0 mm (4.0 in)
2007	203.3 mm (8.0 in)
2008	163.6 mm (6.4 in)
2009	71.8 mm (2.8 in)
2010	164.4 mm (6.5 in)
2011	138.2 mm (5.4 in)
2012	105.7 mm (4.2 in)
2013	36.8 mm (1.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Merida Santiago, 1982 to 2013. The record is 90 days in 2011, marked on the chart; the median year is 39 days.

Longest dry spell (CDD) at Merida Santiago by year
Year	Longest dry spell (CDD)
1982	31 days
1983	39 days
1984	31 days
1985	46 days
1986	53 days
1987	57 days
1988	63 days
2000	43 days
2001	33 days
2002	38 days
2003	28 days
2004	49 days
2005	53 days
2006	48 days
2007	44 days
2008	30 days
2009	31 days
2010	19 days
2011	90 days
2012	28 days
2013	35 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 Merida Santiago standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Merida Santiago 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 2026-10-15 (15 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).