San Bartolo Weather Records (MXN00010063)

Record envelope, standing records and threshold days for San Bartolo (MXN00010063), Mexico, with 67 years of record.

Key Facts for San Bartolo

San Bartolo (MXN00010063) is a weather station in Mexico at 24.52 latitude and -104.65 longitude, 2,000 m (6,561 ft) above sea level.
The station reports from 1942 to 2008, 67 years of record.
1,464 records set at San Bartolo still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
San Bartolo set a daily record precipitation of 15.0 mm (0.6 in) on 31 July 2007.

About the Station

Location: Mexico, 24.52 latitude, -104.65 longitude.
Elevation: 2,000 m (6,561 ft).
Period of record: 1942 to 2008, 67 years.
Eligible elements: 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 San Bartolo. 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 San Bartolo, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	31.7 C (89.1 F)	-8.3 C (17.1 F)	n/a	n/a
Feb	35.6 C (96.1 F)	-5.0 C (23.0 F)	n/a	n/a
Mar	35.0 C (95.0 F)	-6.1 C (21.0 F)	n/a	n/a
Apr	37.8 C (100.0 F)	-1.1 C (30.0 F)	n/a	n/a
May	37.8 C (100.0 F)	1.7 C (35.1 F)	n/a	n/a
Jun	37.8 C (100.0 F)	3.9 C (39.0 F)	n/a	n/a
Jul	37.8 C (100.0 F)	5.6 C (42.1 F)	n/a	n/a
Aug	37.8 C (100.0 F)	5.6 C (42.1 F)	n/a	n/a
Sep	31.7 C (89.1 F)	1.7 C (35.1 F)	n/a	n/a
Oct	32.8 C (91.0 F)	-3.3 C (26.1 F)	n/a	n/a
Nov	31.7 C (89.1 F)	-6.1 C (21.0 F)	n/a	n/a
Dec	30.0 C (86.0 F)	-8.3 C (17.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at San Bartolo still stand. 1992 holds the most, with 144.

Standing records at San Bartolo by the year they were set
Year set	Standing records
1989	139
1990	76
1991	75
1992	144
1993	66
1994	59
1995	83
1996	71
1997	101
1998	115
1999	54
2000	96
2001	38
2002	27
2003	95
2004	103
2005	71
2006	24
2007	21
2008	6

All-Time Record Progression

2 new records

2 all-time records were set at San Bartolo between 27 July 1980 and 8 September 1986. Each dot is a new record.

When San Bartolo set new all-time records
Date	Kind	Detail
1980-07-27	Record daily precipitation	Record daily precipitation 64.8 mm (2.6 in)
1986-09-08	Record daily precipitation	Record daily precipitation 81.8 mm (3.2 in)

Wettest Day of Each Month

Sep: 81.8 mm (3.2 in)

The wettest day on record for each calendar month at San Bartolo. The most was 81.8 mm (3.2 in) on 8 September 1986.

Record daily precipitation for each month at San Bartolo
Month	Record daily precipitation (mm)	Date
Jan	39.9 mm (1.6 in)	15 January 1983
Feb	35.1 mm (1.4 in)	23 February 1953
Mar	39.9 mm (1.6 in)	3 March 1968
Apr	31.0 mm (1.2 in)	9 April 1981
May	35.8 mm (1.4 in)	15 May 1985
Jun	59.9 mm (2.4 in)	18 June 1999
Jul	64.8 mm (2.6 in)	27 July 1980
Aug	59.9 mm (2.4 in)	26 August 2004
Sep	81.8 mm (3.2 in)	8 September 1986
Oct	45.0 mm (1.8 in)	7 October 1981
Nov	39.9 mm (1.6 in)	18 November 1989
Dec	24.4 mm (1.0 in)	2 December 1965

Period of Record Coverage

1989 to 2008

20 years of record at San Bartolo, 1989 to 2008. 3 years have data for under 90 percent of days and are left out of rankings: 1989, 2002, 2008.

Days with data per year at San Bartolo
Year	Days with data	Share of year	Complete
1989	300	82%	No
1990	365	100%	Yes
1991	365	100%	Yes
1992	365	100%	Yes
1993	365	100%	Yes
1994	365	100%	Yes
1995	364	100%	Yes
1996	366	100%	Yes
1997	365	100%	Yes
1998	365	100%	Yes
1999	365	100%	Yes
2000	366	100%	Yes
2001	365	100%	Yes
2002	276	76%	No
2003	334	92%	Yes
2004	335	92%	Yes
2005	365	100%	Yes
2006	365	100%	Yes
2007	365	100%	Yes
2008	60	16%	No

Latest Records

Latest records at San Bartolo
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 July 2007	San Bartolo, MX	daily rain	15.0 mm (0.6 in)	1.0 mm (0.04 in)	45 years	20 of 100 (Routine)
21 July 2007	San Bartolo, MX	daily rain	24.9 mm (1.0 in)	1.0 mm (0.04 in)	24 years	14 of 100 (Routine)
8 July 2007	San Bartolo, MX	daily rain	20.8 mm (0.8 in)	3.5 mm (0.14 in)	16 years	13 of 100 (Routine)
16 June 2007	San Bartolo, MX	daily rain	27.9 mm (1.1 in)	14.9 mm (0.6 in)	48 years	35 of 100 (Notable)
12 June 2007	San Bartolo, MX	daily rain	49.8 mm (2.0 in)	7.9 mm (0.31 in)	34 years	24 of 100 (Routine)
11 June 2007	San Bartolo, MX	daily rain	27.9 mm (1.1 in)	8.8 mm (0.35 in)	57 years	32 of 100 (Routine)
9 June 2007	San Bartolo, MX	daily rain	22.9 mm (0.9 in)	11.0 mm (0.4 in)	8 years	19 of 100 (Routine)
6 October 2006	San Bartolo, MX	daily rain	15.0 mm (0.6 in)	2.0 mm (0.08 in)	24 years	15 of 100 (Routine)
11 September 2006	San Bartolo, MX	daily rain	30.0 mm (1.2 in)	6.6 mm (0.26 in)	59 years	29 of 100 (Routine)
1 August 2006	San Bartolo, MX	daily rain	21.8 mm (0.9 in)	11.4 mm (0.4 in)	32 years	20 of 100 (Routine)
6 July 2006	San Bartolo, MX	daily rain	34.8 mm (1.4 in)	2.5 mm (0.10 in)	41 years	20 of 100 (Routine)
27 June 2006	San Bartolo, MX	daily rain	21.8 mm (0.9 in)	2.0 mm (0.08 in)	3 years	8 of 100 (Routine)
4 June 2006	San Bartolo, MX	daily rain	29.0 mm (1.1 in)	16.0 mm (0.6 in)	19 years	28 of 100 (Routine)
28 July 2005	San Bartolo, MX	daily rain	24.9 mm (1.0 in)	5.1 mm (0.20 in)	8 years	13 of 100 (Routine)
10 July 2005	San Bartolo, MX	daily rain (Tie)	11.9 mm (0.5 in)	tie	12 years	2 of 100 (Routine)
24 September 2004	San Bartolo, MX	daily rain	30.0 mm (1.2 in)	7.1 mm (0.28 in)	7 years	15 of 100 (Routine)
17 September 2004	San Bartolo, MX	daily rain	27.9 mm (1.1 in)	18.0 mm (0.7 in)	8 years	25 of 100 (Routine)
5 September 2004	San Bartolo, MX	daily rain	22.9 mm (0.9 in)	1.1 mm (0.04 in)	36 years	17 of 100 (Routine)
1 September 2004	San Bartolo, MX	daily rain	21.8 mm (0.9 in)	3.0 mm (0.12 in)	11 years	11 of 100 (Routine)
26 August 2004	San Bartolo, MX	monthly rain	59.9 mm (2.4 in)	2.0 mm (0.08 in)	35 years	28 of 100 (Routine)

Climate Trend

15 complete years, 1990 to 2007

One stripe for each of 15 complete years at San Bartolo, 1990 to 2007. Blue stripes are years cooler than the station's own mean of 16.5 C (61.7 F); red stripes are warmer. The coolest year was 1992, at 15.1 C (59.1 F), and the warmest was 2005, at 18.7 C (65.7 F). The strongest colour marks a difference of 2.3 C (4.1 F).

Annual mean temperature at San Bartolo as warming stripes, 1990 to 2007
Year	Annual mean temperature	Difference from the station mean
1990	16.0 C	-0.53 C
1991	15.8 C	-0.68 C
1992	15.1 C	-1.46 C
1993	15.7 C	-0.78 C
1994	16.2 C	-0.30 C
1995	16.1 C	-0.46 C
1996	15.9 C	-0.59 C
1997	16.2 C	-0.34 C
1998	16.3 C	-0.21 C
1999	16.3 C	-0.17 C
2000	16.8 C	+0.30 C
2001	17.4 C	+0.87 C
2005	18.7 C	+2.23 C
2006	17.5 C	+0.99 C
2007	17.7 C	+1.16 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

1942 to 2008

Yearly extremes at San Bartolo: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	37.8 C (100.0 F)	1997	35.3 C (95.5 F)	20
Coldest night (TNn)	-8.3 C (17.1 F)	1997	-5.0 C (23.0 F)	20
Wettest day (Rx1day)	81.8 mm (3.2 in)	1986	35.0 mm (1.4 in)	66
Wettest five days (Rx5day)	150.4 mm (5.9 in)	1986	61.0 mm (2.4 in)	66
Longest dry spell (CDD)	167 days	1995	91 days	66

Hottest day (TXx)

The hottest day of the year at San Bartolo, 1942 to 2008. The record is 37.8 C (100.0 F) in 1997, marked on the chart; the median year is 35.3 C (95.5 F).

Hottest day (TXx) at San Bartolo by year
Year	Hottest day (TXx)
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1989	36.7 C (98.1 F)
1990	35.0 C (95.0 F)
1991	33.9 C (93.0 F)
1992	35.0 C (95.0 F)
1993	35.0 C (95.0 F)
1994	33.9 C (93.0 F)
1995	35.0 C (95.0 F)
1996	35.6 C (96.1 F)
1997	37.8 C (100.0 F)
1998	37.8 C (100.0 F)
1999	36.7 C (98.1 F)
2000	37.8 C (100.0 F)
2001	37.8 C (100.0 F)
2002	35.6 C (96.1 F)
2003	35.6 C (96.1 F)
2004	33.9 C (93.0 F)
2005	35.0 C (95.0 F)
2006	31.7 C (89.1 F)
2007	35.6 C (96.1 F)
2008	30.0 C (86.0 F)

Coldest night (TNn)

The coldest night of the year at San Bartolo, 1942 to 2008. The record is -8.3 C (17.1 F) in 1997, marked on the chart; the median year is -5.0 C (23.0 F).

Coldest night (TNn) at San Bartolo by year
Year	Coldest night (TNn)
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1989	-6.1 C (21.0 F)
1990	-5.0 C (23.0 F)
1991	-5.0 C (23.0 F)
1992	-6.1 C (21.0 F)
1993	-5.0 C (23.0 F)
1994	-6.1 C (21.0 F)
1995	-5.0 C (23.0 F)
1996	-7.2 C (19.0 F)
1997	-8.3 C (17.1 F)
1998	-5.0 C (23.0 F)
1999	-5.0 C (23.0 F)
2000	-5.0 C (23.0 F)
2001	-7.2 C (19.0 F)
2002	-6.1 C (21.0 F)
2003	-5.0 C (23.0 F)
2004	-6.1 C (21.0 F)
2005	-4.4 C (24.1 F)
2006	-6.1 C (21.0 F)
2007	-4.4 C (24.1 F)
2008	-3.3 C (26.1 F)

Wettest day (Rx1day)

The wettest day of the year at San Bartolo, 1942 to 2008. The record is 81.8 mm (3.2 in) in 1986, marked on the chart; the median year is 35.0 mm (1.4 in).

Wettest day (Rx1day) at San Bartolo by year
Year	Wettest day (Rx1day)
1942	27.2 mm (1.1 in)
1943	62.7 mm (2.5 in)
1944	47.2 mm (1.9 in)
1945	39.4 mm (1.6 in)
1946	40.1 mm (1.6 in)
1947	54.1 mm (2.1 in)
1948	47.5 mm (1.9 in)
1949	23.1 mm (0.9 in)
1950	25.4 mm (1.0 in)
1951	28.4 mm (1.1 in)
1952	19.6 mm (0.8 in)
1953	62.2 mm (2.4 in)
1954	19.1 mm (0.8 in)
1955	60.7 mm (2.4 in)
1956	35.1 mm (1.4 in)
1957	25.9 mm (1.0 in)
1958	51.3 mm (2.0 in)
1959	41.9 mm (1.6 in)
1960	17.3 mm (0.7 in)
1961	23.9 mm (0.9 in)
1962	29.0 mm (1.1 in)
1963	25.9 mm (1.0 in)
1964	32.3 mm (1.3 in)
1965	30.5 mm (1.2 in)
1966	33.8 mm (1.3 in)
1967	27.4 mm (1.1 in)
1968	46.0 mm (1.8 in)
1969	57.9 mm (2.3 in)
1970	32.3 mm (1.3 in)
1971	39.9 mm (1.6 in)
1972	41.9 mm (1.6 in)
1973	39.9 mm (1.6 in)
1974	25.9 mm (1.0 in)
1975	41.9 mm (1.6 in)
1976	45.0 mm (1.8 in)
1977	23.9 mm (0.9 in)
1978	59.9 mm (2.4 in)
1979	19.8 mm (0.8 in)
1980	64.8 mm (2.6 in)
1981	45.0 mm (1.8 in)
1982	27.4 mm (1.1 in)
1983	39.9 mm (1.6 in)
1984	33.8 mm (1.3 in)
1985	37.8 mm (1.5 in)
1986	81.8 mm (3.2 in)
1987	39.9 mm (1.6 in)
1989	39.9 mm (1.6 in)
1990	22.9 mm (0.9 in)
1991	32.8 mm (1.3 in)
1992	22.4 mm (0.9 in)
1993	54.9 mm (2.2 in)
1994	26.2 mm (1.0 in)
1995	35.3 mm (1.4 in)
1996	19.8 mm (0.8 in)
1997	22.9 mm (0.9 in)
1998	39.9 mm (1.6 in)
1999	59.9 mm (2.4 in)
2000	31.8 mm (1.3 in)
2001	31.8 mm (1.3 in)
2002	21.8 mm (0.9 in)
2003	59.9 mm (2.4 in)
2004	59.9 mm (2.4 in)
2005	24.9 mm (1.0 in)
2006	34.8 mm (1.4 in)
2007	49.8 mm (2.0 in)
2008	0.0 mm (0.00 in)

Wettest five days (Rx5day)

The wettest five days of the year at San Bartolo, 1942 to 2008. The record is 150.4 mm (5.9 in) in 1986, marked on the chart; the median year is 61.0 mm (2.4 in).

Wettest five days (Rx5day) at San Bartolo by year
Year	Wettest five days (Rx5day)
1942	58.7 mm (2.3 in)
1943	68.9 mm (2.7 in)
1944	115.9 mm (4.6 in)
1945	68.9 mm (2.7 in)
1946	41.2 mm (1.6 in)
1947	89.9 mm (3.5 in)
1948	135.6 mm (5.3 in)
1949	37.3 mm (1.5 in)
1950	26.7 mm (1.1 in)
1951	42.9 mm (1.7 in)
1952	31.8 mm (1.3 in)
1953	87.4 mm (3.4 in)
1954	27.3 mm (1.1 in)
1955	80.3 mm (3.2 in)
1956	49.1 mm (1.9 in)
1957	48.1 mm (1.9 in)
1958	80.9 mm (3.2 in)
1959	75.5 mm (3.0 in)
1960	53.8 mm (2.1 in)
1961	51.1 mm (2.0 in)
1962	41.4 mm (1.6 in)
1963	50.1 mm (2.0 in)
1964	43.1 mm (1.7 in)
1965	37.4 mm (1.5 in)
1966	79.0 mm (3.1 in)
1967	60.2 mm (2.4 in)
1968	75.4 mm (3.0 in)
1969	69.3 mm (2.7 in)
1970	68.1 mm (2.7 in)
1971	80.1 mm (3.2 in)
1972	55.4 mm (2.2 in)
1973	80.3 mm (3.2 in)
1974	48.5 mm (1.9 in)
1975	77.5 mm (3.1 in)
1976	129.6 mm (5.1 in)
1977	39.4 mm (1.6 in)
1978	83.5 mm (3.3 in)
1979	39.6 mm (1.6 in)
1980	104.4 mm (4.1 in)
1981	62.8 mm (2.5 in)
1982	43.7 mm (1.7 in)
1983	91.5 mm (3.6 in)
1984	36.4 mm (1.4 in)
1985	48.5 mm (1.9 in)
1986	150.4 mm (5.9 in)
1987	32.0 mm (1.3 in)
1989	50.5 mm (2.0 in)
1990	56.6 mm (2.2 in)
1991	64.7 mm (2.5 in)
1992	42.2 mm (1.7 in)
1993	113.4 mm (4.5 in)
1994	46.3 mm (1.8 in)
1995	46.2 mm (1.8 in)
1996	43.9 mm (1.7 in)
1997	33.3 mm (1.3 in)
1998	62.5 mm (2.5 in)
1999	107.7 mm (4.2 in)
2000	61.8 mm (2.4 in)
2001	72.4 mm (2.9 in)
2002	45.4 mm (1.8 in)
2003	106.4 mm (4.2 in)
2004	96.5 mm (3.8 in)
2005	61.7 mm (2.4 in)
2006	83.4 mm (3.3 in)
2007	115.6 mm (4.6 in)
2008	0.0 mm (0.00 in)

Longest dry spell (CDD)

The longest dry spell of the year at San Bartolo, 1942 to 2008. The record is 167 days in 1995, marked on the chart; the median year is 91 days.

Longest dry spell (CDD) at San Bartolo by year
Year	Longest dry spell (CDD)
1942	58 days
1943	60 days
1944	58 days
1945	83 days
1946	48 days
1947	112 days
1948	72 days
1949	91 days
1950	62 days
1951	76 days
1952	108 days
1953	53 days
1954	108 days
1955	58 days
1956	113 days
1957	46 days
1958	50 days
1959	52 days
1960	138 days
1961	81 days
1962	90 days
1963	66 days
1964	106 days
1965	71 days
1966	88 days
1967	55 days
1968	64 days
1969	141 days
1970	97 days
1971	131 days
1972	43 days
1973	80 days
1974	148 days
1975	97 days
1976	94 days
1977	93 days
1978	140 days
1979	63 days
1980	121 days
1981	46 days
1982	70 days
1983	126 days
1984	45 days
1985	39 days
1986	98 days
1987	34 days
1989	89 days
1990	158 days
1991	117 days
1992	92 days
1993	132 days
1994	83 days
1995	167 days
1996	113 days
1997	36 days
1998	159 days
1999	146 days
2000	134 days
2001	111 days
2002	38 days
2003	139 days
2004	98 days
2005	148 days
2006	135 days
2007	158 days
2008	60 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

61 years, 1942 to 2007

A day with at least 35.7 mm (1.4 in) of rain is expected about once in 2 years. A day with at least 85.9 mm (3.4 in) of rain is expected about once in 100 years.

Rainfall return levels at San Bartolo: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	35.7 mm (1.4 in)
5 years	49.1 mm (1.9 in)
10 years	57.9 mm (2.3 in)
25 years	69.2 mm (2.7 in)
50 years	77.5 mm (3.1 in)
100 years	85.9 mm (3.4 in)	Longer than the 61 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, 61 years of values from 1942 to 2007.

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: 81.8 mm (3.2 in) in 1986; 64.8 mm (2.6 in) in 1980; 62.7 mm (2.5 in) in 1943.

Download the Data

Data for San Bartolo standing records by year: CSV or JSON. Field meanings are on the data page.
Data for San Bartolo 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 2026-10-16 (16 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).