Santiago Minas Weather Records (MXN00020135)

Record envelope, standing records and threshold days for Santiago Minas (MXN00020135), Mexico, with 45 years of record.

Key Facts for Santiago Minas

Santiago Minas (MXN00020135) is a weather station in Mexico at 16.42 latitude and -97.22 longitude, 956 m (3,136 ft) above sea level.
The station reports from 1953 to 1997, 45 years of record.
1,464 records set at Santiago Minas still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Santiago Minas set a daily record low maximum temperature of 22.8 C (73.0 F) on 18 September 1997.

About the Station

Location: Mexico, 16.42 latitude, -97.22 longitude.
Elevation: 956 m (3,136 ft).
Period of record: 1953 to 1997, 45 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 Minas. 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 Minas, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	41.1 C (106.0 F)	-1.1 C (30.0 F)	n/a	n/a
Feb	40.6 C (105.1 F)	0.6 C (33.1 F)	n/a	n/a
Mar	42.8 C (109.0 F)	4.4 C (39.9 F)	n/a	n/a
Apr	42.2 C (108.0 F)	5.6 C (42.1 F)	n/a	n/a
May	42.8 C (109.0 F)	8.3 C (46.9 F)	n/a	n/a
Jun	40.0 C (104.0 F)	8.3 C (46.9 F)	n/a	n/a
Jul	39.4 C (102.9 F)	8.3 C (46.9 F)	n/a	n/a
Aug	40.0 C (104.0 F)	7.2 C (45.0 F)	n/a	n/a
Sep	38.9 C (102.0 F)	8.3 C (46.9 F)	n/a	n/a
Oct	40.0 C (104.0 F)	4.4 C (39.9 F)	n/a	n/a
Nov	40.0 C (104.0 F)	0.6 C (33.1 F)	n/a	n/a
Dec	40.0 C (104.0 F)	1.1 C (34.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Santiago Minas still stand. 1954 holds the most, with 252.

Standing records at Santiago Minas by the year they were set
Year set	Standing records
1953	114
1954	252
1955	85
1956	7
1957	28
1958	12
1961	20
1962	11
1963	20
1964	11
1965	16
1966	19
1967	32
1968	43
1969	80
1970	166
1971	201
1972	98
1973	53
1974	26
1975	7
1976	7
1977	14
1978	7
1979	20
1980	20
1981	2
1982	11
1983	14
1984	15
1985	7
1986	7
1987	3
1988	5
1989	6
1990	7
1991	2
1992	6
1993	3
1995	1
1997	6

Wettest Day of Each Month

Sep: 99.8 mm (3.9 in)

The wettest day on record for each calendar month at Santiago Minas. The most was 99.8 mm (3.9 in) on 28 September 1954.

Record daily precipitation for each month at Santiago Minas
Month	Record daily precipitation (mm)	Date
Jan	61.0 mm (2.4 in)	19 January 1958
Feb	49.8 mm (2.0 in)	25 February 1983
Mar	31.5 mm (1.2 in)	1 March 1982
Apr	58.9 mm (2.3 in)	18 April 1967
May	54.9 mm (2.2 in)	16 May 1990
Jun	96.3 mm (3.8 in)	28 June 1997
Jul	84.8 mm (3.3 in)	6 July 1955
Aug	86.9 mm (3.4 in)	27 August 1981
Sep	99.8 mm (3.9 in)	28 September 1954
Oct	78.0 mm (3.1 in)	3 October 1976
Nov	64.3 mm (2.5 in)	5 November 1961
Dec	29.0 mm (1.1 in)	3 December 1968

Period of Record Coverage

1953 to 1997

42 years of record at Santiago Minas, 1953 to 1997. 8 years have data for under 90 percent of days and are left out of rankings: 1953, 1958, 1972, 1976, 1989, 1990, 1995, 1997.

Days with data per year at Santiago Minas
Year	Days with data	Share of year	Complete
1953	194	53%	No
1954	365	100%	Yes
1955	365	100%	Yes
1956	366	100%	Yes
1957	365	100%	Yes
1958	212	58%	No
1961	365	100%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	355	97%	Yes
1970	363	99%	Yes
1971	365	100%	Yes
1972	283	77%	No
1973	334	92%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	304	83%	No
1977	334	92%	Yes
1978	365	100%	Yes
1979	335	92%	Yes
1980	365	100%	Yes
1981	364	100%	Yes
1982	365	100%	Yes
1983	365	100%	Yes
1984	335	92%	Yes
1985	334	92%	Yes
1986	363	99%	Yes
1987	334	92%	Yes
1988	366	100%	Yes
1989	273	75%	No
1990	213	58%	No
1991	334	92%	Yes
1992	366	100%	Yes
1993	365	100%	Yes
1994	365	100%	Yes
1995	273	75%	No
1997	273	75%	No

Latest Records

Latest records at Santiago Minas
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 September 1997	Santiago Minas, MX	daily low max	22.8 C (73.0 F)	0.5 C (0.9 F)	28 years	13 of 100 (Routine)
5 September 1997	Santiago Minas, MX	daily rain	50.8 mm (2.0 in)	10.9 mm (0.4 in)	35 years	21 of 100 (Routine)
28 August 1997	Santiago Minas, MX	daily low min	10.6 C (51.1 F)	0.5 C (0.9 F)	18 years	11 of 100 (Routine)
7 August 1997	Santiago Minas, MX	daily rain	37.8 mm (1.5 in)	9.4 mm (0.37 in)	42 years	23 of 100 (Routine)
2 July 1997	Santiago Minas, MX	daily high min (Tie)	18.9 C (66.0 F)	tie	40 years	4 of 100 (Routine)
28 June 1997	Santiago Minas, MX	monthly rain	96.3 mm (3.8 in)	4.4 mm (0.17 in)	16 years	20 of 100 (Routine)
8 June 1997	Santiago Minas, MX	daily high min	20.0 C (68.0 F)	0.6 C (1.1 F)	8 years	8 of 100 (Routine)
31 May 1997	Santiago Minas, MX	monthly low max	19.4 C (66.9 F)	1.2 C (2.2 F)	27 years	25 of 100 (Routine)
27 May 1997	Santiago Minas, MX	daily rain	26.9 mm (1.1 in)	1.5 mm (0.06 in)	22 years	11 of 100 (Routine)
9 May 1997	Santiago Minas, MX	daily high min	18.9 C (66.0 F)	0.6 C (1.1 F)	39 years	17 of 100 (Routine)
19 March 1997	Santiago Minas, MX	daily rain	10.9 mm (0.4 in)	10.1 mm (0.4 in)	28 years	20 of 100 (Routine)
5 March 1997	Santiago Minas, MX	daily high min	18.9 C (66.0 F)	1.1 C (2.0 F)	24 years	15 of 100 (Routine)
29 August 1995	Santiago Minas, MX	daily high min (Tie)	18.9 C (66.0 F)	tie	40 years	4 of 100 (Routine)
23 August 1995	Santiago Minas, MX	daily rain	47.0 mm (1.9 in)	18.6 mm (0.7 in)	25 years	25 of 100 (Routine)
13 May 1995	Santiago Minas, MX	daily high min (Tie)	20.6 C (69.1 F)	tie	12 years	1 of 100 (Routine)
26 April 1995	Santiago Minas, MX	daily rain	18.8 mm (0.7 in)	5.8 mm (0.23 in)	22 years	14 of 100 (Routine)
16 April 1995	Santiago Minas, MX	daily rain	42.9 mm (1.7 in)	23.6 mm (0.9 in)	16 years	28 of 100 (Routine)
20 February 1995	Santiago Minas, MX	daily high max	38.9 C (102.0 F)	0.6 C (1.1 F)	40 years	17 of 100 (Routine)
4 February 1995	Santiago Minas, MX	daily rain	19.8 mm (0.8 in)	19.8 mm (0.8 in)	40 years	20 of 100 (Routine)
13 October 1994	Santiago Minas, MX	daily high min (Tie)	18.9 C (66.0 F)	tie	40 years	4 of 100 (Routine)

Climate Trend

27 complete years, 1954 to 1994

One stripe for each of 27 complete years at Santiago Minas, 1954 to 1994. Blue stripes are years cooler than the station's own mean of 21.4 C (70.5 F); red stripes are warmer. The coolest year was 1970, at 16.9 C (62.5 F), and the warmest was 1954, at 26.8 C (80.2 F). The strongest colour marks a difference of 5.4 C (9.7 F).

Annual mean temperature at Santiago Minas as warming stripes, 1954 to 1994
Year	Annual mean temperature	Difference from the station mean
1954	26.8 C	+5.37 C
1955	25.1 C	+3.69 C
1956	22.1 C	+0.73 C
1957	22.8 C	+1.43 C
1961	20.1 C	-1.31 C
1962	20.1 C	-1.32 C
1963	19.9 C	-1.53 C
1964	19.9 C	-1.50 C
1965	20.0 C	-1.46 C
1966	19.6 C	-1.82 C
1967	19.6 C	-1.84 C
1968	19.9 C	-1.54 C
1969	18.5 C	-2.95 C
1970	16.9 C	-4.47 C
1971	18.1 C	-3.28 C
1974	24.0 C	+2.58 C
1975	23.3 C	+1.88 C
1978	23.4 C	+1.94 C
1980	22.2 C	+0.78 C
1981	22.1 C	+0.72 C
1982	21.5 C	+0.11 C
1983	21.7 C	+0.29 C
1986	21.1 C	-0.30 C
1988	21.6 C	+0.21 C
1992	22.6 C	+1.22 C
1993	22.5 C	+1.10 C
1994	22.8 C	+1.38 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

1953 to 1997

Yearly extremes at Santiago Minas: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	42.8 C (109.0 F)	1954	36.7 C (98.1 F)	42
Coldest night (TNn)	-1.1 C (30.0 F)	1970	5.0 C (41.0 F)	42
Wettest day (Rx1day)	99.8 mm (3.9 in)	1954	62.9 mm (2.5 in)	42
Wettest five days (Rx5day)	287.8 mm (11.3 in)	1974	139.8 mm (5.5 in)	42
Longest dry spell (CDD)	126 days	1964	77 days	42

Hottest day (TXx)

The hottest day of the year at Santiago Minas, 1953 to 1997. The record is 42.8 C (109.0 F) in 1954, marked on the chart; the median year is 36.7 C (98.1 F).

Hottest day (TXx) at Santiago Minas by year
Year	Hottest day (TXx)
1953	40.0 C (104.0 F)
1954	42.8 C (109.0 F)
1955	42.8 C (109.0 F)
1956	36.7 C (98.1 F)
1957	36.1 C (97.0 F)
1958	41.7 C (107.1 F)
1961	33.9 C (93.0 F)
1962	38.3 C (100.9 F)
1963	33.9 C (93.0 F)
1964	32.8 C (91.0 F)
1965	32.2 C (90.0 F)
1966	32.8 C (91.0 F)
1967	35.0 C (95.0 F)
1968	34.4 C (93.9 F)
1969	31.7 C (89.1 F)
1970	30.0 C (86.0 F)
1971	33.9 C (93.0 F)
1972	36.7 C (98.1 F)
1973	39.4 C (102.9 F)
1974	37.8 C (100.0 F)
1975	38.9 C (102.0 F)
1976	38.9 C (102.0 F)
1977	39.4 C (102.9 F)
1978	38.9 C (102.0 F)
1979	37.8 C (100.0 F)
1980	36.7 C (98.1 F)
1981	36.7 C (98.1 F)
1982	35.6 C (96.1 F)
1983	37.2 C (99.0 F)
1984	38.9 C (102.0 F)
1985	38.9 C (102.0 F)
1986	35.6 C (96.1 F)
1987	35.0 C (95.0 F)
1988	35.0 C (95.0 F)
1989	35.0 C (95.0 F)
1990	37.8 C (100.0 F)
1991	35.6 C (96.1 F)
1992	38.9 C (102.0 F)
1993	37.8 C (100.0 F)
1994	36.7 C (98.1 F)
1995	38.9 C (102.0 F)
1997	37.8 C (100.0 F)

Coldest night (TNn)

The coldest night of the year at Santiago Minas, 1953 to 1997. The record is -1.1 C (30.0 F) in 1970, marked on the chart; the median year is 5.0 C (41.0 F).

Coldest night (TNn) at Santiago Minas by year
Year	Coldest night (TNn)
1953	5.6 C (42.1 F)
1954	5.6 C (42.1 F)
1955	4.4 C (39.9 F)
1956	1.7 C (35.1 F)
1957	4.4 C (39.9 F)
1958	6.1 C (43.0 F)
1961	0.6 C (33.1 F)
1962	3.9 C (39.0 F)
1963	2.2 C (36.0 F)
1964	1.7 C (35.1 F)
1965	3.3 C (37.9 F)
1966	2.2 C (36.0 F)
1967	1.7 C (35.1 F)
1968	2.8 C (37.0 F)
1969	1.7 C (35.1 F)
1970	-1.1 C (30.0 F)
1971	0.0 C (32.0 F)
1972	5.6 C (42.1 F)
1973	5.6 C (42.1 F)
1974	7.2 C (45.0 F)
1975	5.6 C (42.1 F)
1976	5.0 C (41.0 F)
1977	7.2 C (45.0 F)
1978	5.6 C (42.1 F)
1979	5.0 C (41.0 F)
1980	5.6 C (42.1 F)
1981	5.0 C (41.0 F)
1982	5.6 C (42.1 F)
1983	3.3 C (37.9 F)
1984	5.0 C (41.0 F)
1985	0.6 C (33.1 F)
1986	3.3 C (37.9 F)
1987	5.6 C (42.1 F)
1988	6.7 C (44.1 F)
1989	5.0 C (41.0 F)
1990	10.0 C (50.0 F)
1991	5.0 C (41.0 F)
1992	8.9 C (48.0 F)
1993	5.6 C (42.1 F)
1994	7.8 C (46.0 F)
1995	10.0 C (50.0 F)
1997	6.7 C (44.1 F)

Wettest day (Rx1day)

The wettest day of the year at Santiago Minas, 1953 to 1997. The record is 99.8 mm (3.9 in) in 1954, marked on the chart; the median year is 62.9 mm (2.5 in).

Wettest day (Rx1day) at Santiago Minas by year
Year	Wettest day (Rx1day)
1953	54.9 mm (2.2 in)
1954	99.8 mm (3.9 in)
1955	84.8 mm (3.3 in)
1956	84.8 mm (3.3 in)
1957	47.0 mm (1.9 in)
1958	72.9 mm (2.9 in)
1961	64.3 mm (2.5 in)
1962	49.8 mm (2.0 in)
1963	85.9 mm (3.4 in)
1964	59.9 mm (2.4 in)
1965	52.1 mm (2.1 in)
1966	55.1 mm (2.2 in)
1967	81.8 mm (3.2 in)
1968	59.7 mm (2.4 in)
1969	75.4 mm (3.0 in)
1970	80.8 mm (3.2 in)
1971	82.3 mm (3.2 in)
1972	61.0 mm (2.4 in)
1973	57.4 mm (2.3 in)
1974	89.9 mm (3.5 in)
1975	49.3 mm (1.9 in)
1976	78.0 mm (3.1 in)
1977	59.9 mm (2.4 in)
1978	61.5 mm (2.4 in)
1979	57.4 mm (2.3 in)
1980	56.9 mm (2.2 in)
1981	91.9 mm (3.6 in)
1982	42.4 mm (1.7 in)
1983	69.9 mm (2.8 in)
1984	79.0 mm (3.1 in)
1985	65.8 mm (2.6 in)
1986	56.4 mm (2.2 in)
1987	64.3 mm (2.5 in)
1988	53.8 mm (2.1 in)
1989	66.8 mm (2.6 in)
1990	54.9 mm (2.2 in)
1991	56.9 mm (2.2 in)
1992	49.8 mm (2.0 in)
1993	74.9 mm (2.9 in)
1994	95.8 mm (3.8 in)
1995	47.0 mm (1.9 in)
1997	96.3 mm (3.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Santiago Minas, 1953 to 1997. The record is 287.8 mm (11.3 in) in 1974, marked on the chart; the median year is 139.8 mm (5.5 in).

Wettest five days (Rx5day) at Santiago Minas by year
Year	Wettest five days (Rx5day)
1953	157.5 mm (6.2 in)
1954	252.2 mm (9.9 in)
1955	170.0 mm (6.7 in)
1956	147.3 mm (5.8 in)
1957	109.2 mm (4.3 in)
1958	134.4 mm (5.3 in)
1961	126.9 mm (5.0 in)
1962	168.6 mm (6.6 in)
1963	139.4 mm (5.5 in)
1964	162.6 mm (6.4 in)
1965	117.1 mm (4.6 in)
1966	141.5 mm (5.6 in)
1967	156.3 mm (6.2 in)
1968	116.1 mm (4.6 in)
1969	130.7 mm (5.1 in)
1970	191.0 mm (7.5 in)
1971	150.2 mm (5.9 in)
1972	159.3 mm (6.3 in)
1973	127.6 mm (5.0 in)
1974	287.8 mm (11.3 in)
1975	109.5 mm (4.3 in)
1976	118.9 mm (4.7 in)
1977	148.0 mm (5.8 in)
1978	127.1 mm (5.0 in)
1979	157.4 mm (6.2 in)
1980	141.3 mm (5.6 in)
1981	230.6 mm (9.1 in)
1982	109.5 mm (4.3 in)
1983	98.9 mm (3.9 in)
1984	170.4 mm (6.7 in)
1985	126.3 mm (5.0 in)
1986	105.1 mm (4.1 in)
1987	178.4 mm (7.0 in)
1988	141.5 mm (5.6 in)
1989	112.1 mm (4.4 in)
1990	127.1 mm (5.0 in)
1991	102.8 mm (4.0 in)
1992	133.9 mm (5.3 in)
1993	143.2 mm (5.6 in)
1994	112.1 mm (4.4 in)
1995	109.0 mm (4.3 in)
1997	140.2 mm (5.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Santiago Minas, 1953 to 1997. The record is 126 days in 1964, marked on the chart; the median year is 77 days.

Longest dry spell (CDD) at Santiago Minas by year
Year	Longest dry spell (CDD)
1953	54 days
1954	97 days
1955	91 days
1956	90 days
1957	114 days
1958	74 days
1961	100 days
1962	104 days
1963	63 days
1964	126 days
1965	83 days
1966	71 days
1967	79 days
1968	59 days
1969	78 days
1970	86 days
1971	91 days
1972	72 days
1973	95 days
1974	77 days
1975	101 days
1976	58 days
1977	68 days
1978	47 days
1979	59 days
1980	71 days
1981	61 days
1982	60 days
1983	71 days
1984	68 days
1985	76 days
1986	65 days
1987	92 days
1988	118 days
1989	121 days
1990	30 days
1991	119 days
1992	45 days
1993	75 days
1994	110 days
1995	70 days
1997	77 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

34 years, 1954 to 1994

A day with at least 65.6 mm (2.6 in) of rain is expected about once in 2 years. A day with at least 114.5 mm (4.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Santiago Minas: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	65.6 mm (2.6 in)
5 years	80.2 mm (3.2 in)
10 years	89.3 mm (3.5 in)
25 years	100.0 mm (3.9 in)
50 years	107.4 mm (4.2 in)	Longer than the 34 years of record
100 years	114.5 mm (4.5 in)	Longer than the 34 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, 34 years of values from 1954 to 1994.

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: 99.8 mm (3.9 in) in 1954; 95.8 mm (3.8 in) in 1994; 91.9 mm (3.6 in) in 1981.

Download the Data

Data for Santiago Minas standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Santiago Minas 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).