Santiago Weather Records (MXN00024078)

Record envelope, standing records and threshold days for Santiago (MXN00024078), Mexico, with 50 years of record.

Key Facts for Santiago

Santiago (MXN00024078) is a weather station in Mexico at 21.87 latitude and -101.27 longitude, 2,221 m (7,286 ft) above sea level.
The station reports from 1961 to 2010, 50 years of record.
1,464 records set at Santiago still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Santiago tied a daily record high maximum temperature of 28.9 C (84.0 F) on 20 November 2010.

About the Station

Location: Mexico, 21.87 latitude, -101.27 longitude.
Elevation: 2,221 m (7,286 ft).
Period of record: 1961 to 2010, 50 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 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 Santiago, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	32.8 C (91.0 F)	-9.4 C (15.1 F)	n/a	n/a
Feb	32.8 C (91.0 F)	-9.4 C (15.1 F)	n/a	n/a
Mar	38.9 C (102.0 F)	-8.3 C (17.1 F)	n/a	n/a
Apr	38.9 C (102.0 F)	-2.2 C (28.0 F)	n/a	n/a
May	38.9 C (102.0 F)	0.6 C (33.1 F)	n/a	n/a
Jun	37.8 C (100.0 F)	0.0 C (32.0 F)	n/a	n/a
Jul	37.8 C (100.0 F)	1.7 C (35.1 F)	n/a	n/a
Aug	33.9 C (93.0 F)	0.0 C (32.0 F)	n/a	n/a
Sep	33.9 C (93.0 F)	0.0 C (32.0 F)	n/a	n/a
Oct	35.0 C (95.0 F)	-4.4 C (24.1 F)	n/a	n/a
Nov	35.0 C (95.0 F)	-8.3 C (17.1 F)	n/a	n/a
Dec	29.4 C (84.9 F)	-11.1 C (12.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Santiago still stand. 1998 holds the most, with 113.

Standing records at Santiago by the year they were set
Year set	Standing records
1961	31
1962	26
1963	28
1964	27
1965	49
1966	33
1967	26
1968	19
1969	21
1970	12
1971	27
1972	17
1973	32
1974	40
1975	15
1976	39
1977	28
1978	3
1980	3
1981	3
1982	53
1983	21
1984	19
1985	9
1986	2
1987	13
1988	13
1989	1
1990	48
1991	93
1992	27
1993	17
1994	28
1995	41
1996	44
1997	73
1998	113
1999	60
2000	25
2001	30
2002	38
2003	31
2004	27
2005	26
2006	21
2007	15
2008	34
2009	27
2010	36

All-Time Record Progression

3 new records

3 all-time records were set at Santiago between 14 December 1997 and 4 July 2008. Each dot is a new record.

When Santiago set new all-time records
Date	Kind	Detail
1997-12-14	Record low minimum temperature	Record low minimum temperature -10.0 C (14.0 F)
1997-12-15	Record low minimum temperature	Record low minimum temperature -11.1 C (12.0 F)
2008-07-04	Record daily precipitation	Record daily precipitation 100.1 mm (3.9 in)

Wettest Day of Each Month

Jul: 100.1 mm (3.9 in)

The wettest day on record for each calendar month at Santiago. The most was 100.1 mm (3.9 in) on 4 July 2008.

Record daily precipitation for each month at Santiago
Month	Record daily precipitation (mm)	Date
Jan	32.3 mm (1.3 in)	12 January 2002
Feb	70.4 mm (2.8 in)	3 February 2010
Mar	68.6 mm (2.7 in)	29 March 2004
Apr	35.8 mm (1.4 in)	1 April 1976
May	62.5 mm (2.5 in)	18 May 1982
Jun	88.9 mm (3.5 in)	11 June 1967
Jul	100.1 mm (3.9 in)	4 July 2008
Aug	59.7 mm (2.4 in)	12 August 1995
Sep	69.9 mm (2.8 in)	19 September 1996
Oct	52.8 mm (2.1 in)	13 October 1976
Nov	26.2 mm (1.0 in)	3 November 2002
Dec	21.8 mm (0.9 in)	15 December 1963

Period of Record Coverage

1961 to 2010

49 years of record at Santiago, 1961 to 2010. 13 years have data for under 90 percent of days and are left out of rankings: 1975, 1976, 1978, 1980, 1981, 1986, 1987, 1988 and others.

Days with data per year at Santiago
Year	Days with data	Share of year	Complete
1961	365	100%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	360	99%	Yes
1967	365	100%	Yes
1968	335	92%	Yes
1969	363	99%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	364	100%	Yes
1975	274	75%	No
1976	248	68%	No
1977	365	100%	Yes
1978	33	9%	No
1980	153	42%	No
1981	274	75%	No
1982	334	92%	Yes
1983	335	92%	Yes
1984	366	100%	Yes
1985	365	100%	Yes
1986	154	42%	No
1987	258	71%	No
1988	195	53%	No
1989	28	8%	No
1990	153	42%	No
1991	364	100%	Yes
1992	334	91%	Yes
1993	208	57%	No
1994	357	98%	Yes
1995	362	99%	Yes
1996	364	99%	Yes
1997	365	100%	Yes
1998	364	100%	Yes
1999	361	99%	Yes
2000	313	86%	No
2001	357	98%	Yes
2002	359	98%	Yes
2003	355	97%	Yes
2004	356	97%	Yes
2005	354	97%	Yes
2006	356	98%	Yes
2007	304	83%	No
2008	359	98%	Yes
2009	363	99%	Yes
2010	330	90%	Yes

Latest Records

Latest records at Santiago
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 November 2010	Santiago, MX	daily high max (Tie)	28.9 C (84.0 F)	tie	44 years	4 of 100 (Routine)
19 November 2010	Santiago, MX	daily high max	30.0 C (86.0 F)	1.1 C (2.0 F)	0 years	8 of 100 (Routine)
14 November 2010	Santiago, MX	daily high max	30.0 C (86.0 F)	2.2 C (4.0 F)	44 years	24 of 100 (Routine)
9 November 2010	Santiago, MX	monthly high max (Tie)	35.0 C (95.0 F)	tie	27 years	5 of 100 (Routine)
8 November 2010	Santiago, MX	daily low min	-6.1 C (21.0 F)	1.1 C (2.0 F)	5 years	9 of 100 (Routine)
5 November 2010	Santiago, MX	daily low min	-4.4 C (24.1 F)	3.3 C (5.9 F)	11 years	17 of 100 (Routine)
3 November 2010	Santiago, MX	daily high max (Tie)	28.9 C (84.0 F)	tie	36 years	4 of 100 (Routine)
2 November 2010	Santiago, MX	daily low min (Tie)	-2.2 C (28.0 F)	tie	20 years	2 of 100 (Routine)
27 October 2010	Santiago, MX	daily high max	32.8 C (91.0 F)	2.8 C (5.0 F)	3 years	12 of 100 (Routine)
23 October 2010	Santiago, MX	daily high max (Tie)	30.6 C (87.1 F)	tie	8 years	1 of 100 (Routine)
21 October 2010	Santiago, MX	daily high max	31.7 C (89.1 F)	0.6 C (1.1 F)	45 years	19 of 100 (Routine)
20 October 2010	Santiago, MX	daily high max (Tie)	30.6 C (87.1 F)	tie	5 years	1 of 100 (Routine)
19 October 2010	Santiago, MX	daily high max (Tie)	31.7 C (89.1 F)	tie	5 years	1 of 100 (Routine)
11 October 2010	Santiago, MX	daily high max	30.6 C (87.1 F)	0.6 C (1.1 F)	3 years	6 of 100 (Routine)
7 October 2010	Santiago, MX	daily low min	0.6 C (33.1 F)	1.1 C (2.0 F)	16 years	13 of 100 (Routine)
5 October 2010	Santiago, MX	daily low min (Tie)	1.7 C (35.1 F)	tie	1 year	1 of 100 (Routine)
28 September 2010	Santiago, MX	daily high max (Tie)	30.0 C (86.0 F)	tie	12 years	2 of 100 (Routine)
25 September 2010	Santiago, MX	daily rain	18.5 mm (0.7 in)	7.6 mm (0.30 in)	17 years	17 of 100 (Routine)
22 September 2010	Santiago, MX	daily high max (Tie)	30.0 C (86.0 F)	tie	16 years	2 of 100 (Routine)
17 September 2010	Santiago, MX	daily high min (Tie)	15.0 C (59.0 F)	tie	27 years	3 of 100 (Routine)

Climate Trend

31 complete years, 1961 to 2009

One stripe for each of 31 complete years at Santiago, 1961 to 2009. Blue stripes are years cooler than the station's own mean of 16.0 C (60.8 F); red stripes are warmer. The coolest year was 1991, at 12.7 C (54.8 F), and the warmest was 1995, at 17.3 C (63.2 F). The strongest colour marks a difference of 3.4 C (6.1 F).

Annual mean temperature at Santiago as warming stripes, 1961 to 2009
Year	Annual mean temperature	Difference from the station mean
1961	16.0 C	-0.07 C
1962	16.3 C	+0.30 C
1963	15.5 C	-0.57 C
1964	16.3 C	+0.25 C
1965	15.6 C	-0.43 C
1966	15.3 C	-0.78 C
1967	15.1 C	-0.93 C
1969	16.2 C	+0.14 C
1970	16.0 C	+0.01 C
1971	16.2 C	+0.16 C
1972	16.5 C	+0.45 C
1973	16.0 C	-0.04 C
1974	16.0 C	-0.04 C
1977	15.0 C	-1.05 C
1984	15.9 C	-0.17 C
1985	15.7 C	-0.31 C
1991	12.7 C	-3.37 C
1994	16.7 C	+0.65 C
1995	17.3 C	+1.31 C
1996	16.3 C	+0.28 C
1997	15.1 C	-0.95 C
1998	14.6 C	-1.40 C
1999	15.9 C	-0.17 C
2001	16.7 C	+0.70 C
2002	16.9 C	+0.89 C
2003	17.1 C	+1.04 C
2004	16.5 C	+0.44 C
2005	17.0 C	+1.00 C
2006	17.2 C	+1.15 C
2008	16.6 C	+0.55 C
2009	16.9 C	+0.84 C

The fitted trend in annual mean temperature here over 1961 to 2009 is 0.17 C (-0.03 to 0.37) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.3 F (-0.1 to 0.7) per decade. The slope is a straight line fitted to 31 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Santiago
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.17 C (-0.03 to 0.37) per decade	0.3 F (-0.1 to 0.7) per decade	1961 to 2009	31	Not clearly different from zero
Mean daily maximum	0.6 C (0.2 to 1.0) per decade	1.1 F (0.4 to 1.7) per decade	1961 to 2009	31	Rise
Mean daily minimum	-0.25 C (-0.52 to 0.01) per decade	-0.46 F (-0.93 to 0.01) per decade	1961 to 2009	31	Not clearly different from zero

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

1961 to 2010

Yearly extremes at Santiago: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	38.9 C (102.0 F)	1966	33.9 C (93.0 F)	49
Coldest night (TNn)	-11.1 C (12.0 F)	1997	-4.4 C (24.1 F)	49
Wettest day (Rx1day)	100.1 mm (3.9 in)	2008	39.9 mm (1.6 in)	49
Wettest five days (Rx5day)	182.0 mm (7.2 in)	1995	75.3 mm (3.0 in)	49
Longest dry spell (CDD)	143 days	1983	64 days	49

Hottest day (TXx)

The hottest day of the year at Santiago, 1961 to 2010. The record is 38.9 C (102.0 F) in 1966, marked on the chart; the median year is 33.9 C (93.0 F).

Hottest day (TXx) at Santiago by year
Year	Hottest day (TXx)
1961	33.9 C (93.0 F)
1962	33.3 C (91.9 F)
1963	35.0 C (95.0 F)
1964	33.3 C (91.9 F)
1965	36.1 C (97.0 F)
1966	38.9 C (102.0 F)
1967	35.0 C (95.0 F)
1968	30.6 C (87.1 F)
1969	32.8 C (91.0 F)
1970	32.8 C (91.0 F)
1971	36.1 C (97.0 F)
1972	31.7 C (89.1 F)
1973	33.9 C (93.0 F)
1974	32.2 C (90.0 F)
1975	35.0 C (95.0 F)
1976	28.9 C (84.0 F)
1977	33.9 C (93.0 F)
1978	30.0 C (86.0 F)
1980	31.7 C (89.1 F)
1981	31.7 C (89.1 F)
1982	35.0 C (95.0 F)
1983	32.8 C (91.0 F)
1984	32.8 C (91.0 F)
1985	30.6 C (87.1 F)
1986	28.9 C (84.0 F)
1987	30.6 C (87.1 F)
1988	32.8 C (91.0 F)
1989	22.8 C (73.0 F)
1990	25.6 C (78.1 F)
1991	27.8 C (82.0 F)
1992	31.7 C (89.1 F)
1993	35.6 C (96.1 F)
1994	35.0 C (95.0 F)
1995	37.8 C (100.0 F)
1996	36.7 C (98.1 F)
1997	32.8 C (91.0 F)
1998	32.8 C (91.0 F)
1999	37.8 C (100.0 F)
2000	33.9 C (93.0 F)
2001	36.7 C (98.1 F)
2002	36.7 C (98.1 F)
2003	38.9 C (102.0 F)
2004	35.0 C (95.0 F)
2005	35.6 C (96.1 F)
2006	38.9 C (102.0 F)
2007	35.0 C (95.0 F)
2008	37.8 C (100.0 F)
2009	35.6 C (96.1 F)
2010	37.8 C (100.0 F)

Coldest night (TNn)

The coldest night of the year at Santiago, 1961 to 2010. The record is -11.1 C (12.0 F) in 1997, marked on the chart; the median year is -4.4 C (24.1 F).

Coldest night (TNn) at Santiago by year
Year	Coldest night (TNn)
1961	0.0 C (32.0 F)
1962	-5.0 C (23.0 F)
1963	0.0 C (32.0 F)
1964	-5.0 C (23.0 F)
1965	-3.3 C (26.1 F)
1966	-5.6 C (21.9 F)
1967	-4.4 C (24.1 F)
1968	-3.3 C (26.1 F)
1969	0.6 C (33.1 F)
1970	0.6 C (33.1 F)
1971	0.6 C (33.1 F)
1972	0.6 C (33.1 F)
1973	0.6 C (33.1 F)
1974	0.0 C (32.0 F)
1975	-5.0 C (23.0 F)
1976	-1.1 C (30.0 F)
1977	-5.0 C (23.0 F)
1978	-4.4 C (24.1 F)
1980	0.6 C (33.1 F)
1981	0.6 C (33.1 F)
1982	-1.1 C (30.0 F)
1983	0.0 C (32.0 F)
1984	0.0 C (32.0 F)
1985	-6.1 C (21.0 F)
1986	0.6 C (33.1 F)
1987	0.0 C (32.0 F)
1988	0.0 C (32.0 F)
1989	0.0 C (32.0 F)
1990	-9.4 C (15.1 F)
1991	-9.4 C (15.1 F)
1992	-5.0 C (23.0 F)
1993	0.0 C (32.0 F)
1994	-5.0 C (23.0 F)
1995	-6.1 C (21.0 F)
1996	-5.0 C (23.0 F)
1997	-11.1 C (12.0 F)
1998	-5.0 C (23.0 F)
1999	-9.4 C (15.1 F)
2000	-7.2 C (19.0 F)
2001	-4.4 C (24.1 F)
2002	-5.0 C (23.0 F)
2003	-9.4 C (15.1 F)
2004	-5.0 C (23.0 F)
2005	-4.4 C (24.1 F)
2006	-5.0 C (23.0 F)
2007	-4.4 C (24.1 F)
2008	-6.1 C (21.0 F)
2009	-4.4 C (24.1 F)
2010	-6.1 C (21.0 F)

Wettest day (Rx1day)

The wettest day of the year at Santiago, 1961 to 2010. The record is 100.1 mm (3.9 in) in 2008, marked on the chart; the median year is 39.9 mm (1.6 in).

Wettest day (Rx1day) at Santiago by year
Year	Wettest day (Rx1day)
1961	51.8 mm (2.0 in)
1962	39.4 mm (1.6 in)
1963	39.9 mm (1.6 in)
1964	61.0 mm (2.4 in)
1965	30.0 mm (1.2 in)
1966	41.9 mm (1.6 in)
1967	88.9 mm (3.5 in)
1968	23.9 mm (0.9 in)
1969	53.8 mm (2.1 in)
1970	38.9 mm (1.5 in)
1971	58.9 mm (2.3 in)
1972	35.8 mm (1.4 in)
1973	43.9 mm (1.7 in)
1974	35.8 mm (1.4 in)
1975	40.4 mm (1.6 in)
1976	90.4 mm (3.6 in)
1977	21.1 mm (0.8 in)
1978	4.8 mm (0.19 in)
1980	3.8 mm (0.15 in)
1981	25.9 mm (1.0 in)
1982	62.5 mm (2.5 in)
1983	21.3 mm (0.8 in)
1984	18.5 mm (0.7 in)
1985	19.8 mm (0.8 in)
1986	38.1 mm (1.5 in)
1987	29.5 mm (1.2 in)
1988	35.3 mm (1.4 in)
1989	0.0 mm (0.00 in)
1990	19.8 mm (0.8 in)
1991	59.9 mm (2.4 in)
1992	37.3 mm (1.5 in)
1993	39.9 mm (1.6 in)
1994	27.4 mm (1.1 in)
1995	59.7 mm (2.4 in)
1996	69.9 mm (2.8 in)
1997	41.9 mm (1.6 in)
1998	36.1 mm (1.4 in)
1999	40.4 mm (1.6 in)
2000	18.3 mm (0.7 in)
2001	70.4 mm (2.8 in)
2002	32.3 mm (1.3 in)
2003	52.1 mm (2.1 in)
2004	68.6 mm (2.7 in)
2005	37.1 mm (1.5 in)
2006	59.9 mm (2.4 in)
2007	51.8 mm (2.0 in)
2008	100.1 mm (3.9 in)
2009	49.3 mm (1.9 in)
2010	70.4 mm (2.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Santiago, 1961 to 2010. The record is 182.0 mm (7.2 in) in 1995, marked on the chart; the median year is 75.3 mm (3.0 in).

Wettest five days (Rx5day) at Santiago by year
Year	Wettest five days (Rx5day)
1961	99.6 mm (3.9 in)
1962	50.5 mm (2.0 in)
1963	45.7 mm (1.8 in)
1964	84.1 mm (3.3 in)
1965	39.9 mm (1.6 in)
1966	88.4 mm (3.5 in)
1967	136.5 mm (5.4 in)
1968	63.2 mm (2.5 in)
1969	84.5 mm (3.3 in)
1970	83.6 mm (3.3 in)
1971	133.8 mm (5.3 in)
1972	73.2 mm (2.9 in)
1973	107.4 mm (4.2 in)
1974	84.8 mm (3.3 in)
1975	132.9 mm (5.2 in)
1976	137.4 mm (5.4 in)
1977	44.7 mm (1.8 in)
1978	4.8 mm (0.19 in)
1980	3.8 mm (0.15 in)
1981	38.4 mm (1.5 in)
1982	62.5 mm (2.5 in)
1983	58.4 mm (2.3 in)
1984	40.6 mm (1.6 in)
1985	48.5 mm (1.9 in)
1986	81.0 mm (3.2 in)
1987	47.6 mm (1.9 in)
1988	79.6 mm (3.1 in)
1989	0.0 mm (0.00 in)
1990	23.2 mm (0.9 in)
1991	101.1 mm (4.0 in)
1992	54.1 mm (2.1 in)
1993	39.9 mm (1.6 in)
1994	60.4 mm (2.4 in)
1995	182.0 mm (7.2 in)
1996	115.4 mm (4.5 in)
1997	72.4 mm (2.9 in)
1998	97.5 mm (3.8 in)
1999	62.0 mm (2.4 in)
2000	31.5 mm (1.2 in)
2001	75.3 mm (3.0 in)
2002	41.7 mm (1.6 in)
2003	93.1 mm (3.7 in)
2004	105.1 mm (4.1 in)
2005	50.1 mm (2.0 in)
2006	79.5 mm (3.1 in)
2007	93.8 mm (3.7 in)
2008	145.6 mm (5.7 in)
2009	92.5 mm (3.6 in)
2010	106.4 mm (4.2 in)

Longest dry spell (CDD)

The longest dry spell of the year at Santiago, 1961 to 2010. The record is 143 days in 1983, marked on the chart; the median year is 64 days.

Longest dry spell (CDD) at Santiago by year
Year	Longest dry spell (CDD)
1961	68 days
1962	71 days
1963	119 days
1964	62 days
1965	43 days
1966	36 days
1967	45 days
1968	34 days
1969	85 days
1970	86 days
1971	67 days
1972	70 days
1973	79 days
1974	79 days
1975	107 days
1976	29 days
1977	81 days
1978	41 days
1980	64 days
1981	35 days
1982	105 days
1983	143 days
1984	106 days
1985	47 days
1986	31 days
1987	41 days
1988	25 days
1989	28 days
1990	39 days
1991	93 days
1992	43 days
1993	30 days
1994	67 days
1995	92 days
1996	126 days
1997	44 days
1998	75 days
1999	65 days
2000	54 days
2001	51 days
2002	58 days
2003	109 days
2004	31 days
2005	48 days
2006	66 days
2007	59 days
2008	102 days
2009	77 days
2010	52 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.

Rainfall Return Levels

36 years, 1961 to 2010

A day with at least 44.7 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 104.2 mm (4.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Santiago: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	44.7 mm (1.8 in)
5 years	62.4 mm (2.5 in)
10 years	73.3 mm (2.9 in)
25 years	86.4 mm (3.4 in)
50 years	95.5 mm (3.8 in)	Longer than the 36 years of record
100 years	104.2 mm (4.1 in)	Longer than the 36 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 36 years of values from 1961 to 2010.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 100.1 mm (3.9 in) in 2008; 88.9 mm (3.5 in) in 1967; 70.4 mm (2.8 in) in 2001.

Download the Data

Data for Santiago standing records by year: CSV or JSON. Field meanings are on the data page.
Data for 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 2026-10-17 (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).