San Carlos I Weather Records (MXN00016107)

Record envelope, standing records and threshold days for San Carlos I (MXN00016107), Mexico, with 33 years of record.

Key Facts for San Carlos I

San Carlos I (MXN00016107) is a weather station in Mexico at 19.23 latitude and -100.78 longitude, 799 m (2,621 ft) above sea level.
The station reports from 1969 to 2001, 33 years of record.
1,464 records set at San Carlos I still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
San Carlos I set a daily record precipitation of 45.2 mm (1.8 in) on 27 July 2001.

About the Station

Location: Mexico, 19.23 latitude, -100.78 longitude.
Elevation: 799 m (2,621 ft).
Period of record: 1969 to 2001, 33 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 Carlos I. 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 Carlos I, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	35.6 C (96.1 F)	3.9 C (39.0 F)	n/a	n/a
Feb	38.9 C (102.0 F)	3.9 C (39.0 F)	n/a	n/a
Mar	41.7 C (107.1 F)	6.7 C (44.1 F)	n/a	n/a
Apr	42.2 C (108.0 F)	6.7 C (44.1 F)	n/a	n/a
May	48.9 C (120.0 F)	10.0 C (50.0 F)	n/a	n/a
Jun	42.8 C (109.0 F)	15.0 C (59.0 F)	n/a	n/a
Jul	38.9 C (102.0 F)	15.0 C (59.0 F)	n/a	n/a
Aug	35.6 C (96.1 F)	15.6 C (60.1 F)	n/a	n/a
Sep	38.3 C (100.9 F)	13.9 C (57.0 F)	n/a	n/a
Oct	39.4 C (102.9 F)	8.3 C (46.9 F)	n/a	n/a
Nov	36.7 C (98.1 F)	5.0 C (41.0 F)	n/a	n/a
Dec	40.0 C (104.0 F)	3.9 C (39.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at San Carlos I still stand. 1980 holds the most, with 171.

Standing records at San Carlos I by the year they were set
Year set	Standing records
1978	8
1979	129
1980	171
1981	60
1982	73
1983	60
1984	37
1985	29
1986	53
1987	61
1988	57
1989	44
1990	23
1991	45
1992	56
1993	25
1994	44
1995	41
1996	78
1997	118
1998	74
1999	51
2000	62
2001	65

Wettest Day of Each Month

Sep: 178.8 mm (7.0 in)

The wettest day on record for each calendar month at San Carlos I. The most was 178.8 mm (7.0 in) on 8 September 1998.

Record daily precipitation for each month at San Carlos I
Month	Record daily precipitation (mm)	Date
Jan	62.0 mm (2.4 in)	23 January 1980
Feb	15.2 mm (0.6 in)	2 February 1992
Mar	28.4 mm (1.1 in)	2 March 2001
Apr	13.0 mm (0.5 in)	28 April 1992
May	45.0 mm (1.8 in)	19 May 1982
Jun	84.8 mm (3.3 in)	11 June 1975
Jul	120.4 mm (4.7 in)	14 July 1988
Aug	99.1 mm (3.9 in)	30 August 1998
Sep	178.8 mm (7.0 in)	8 September 1998
Oct	72.9 mm (2.9 in)	4 October 1981
Nov	41.4 mm (1.6 in)	1 November 1980
Dec	29.5 mm (1.2 in)	30 December 2000

Period of Record Coverage

1978 to 2001

24 years of record at San Carlos I, 1978 to 2001. 4 years have data for under 90 percent of days and are left out of rankings: 1978, 1999, 2000, 2001.

Days with data per year at San Carlos I
Year	Days with data	Share of year	Complete
1978	23	6%	No
1979	364	100%	Yes
1980	366	100%	Yes
1981	361	99%	Yes
1982	364	100%	Yes
1983	365	100%	Yes
1984	366	100%	Yes
1985	334	92%	Yes
1986	364	100%	Yes
1987	333	91%	Yes
1988	366	100%	Yes
1989	362	99%	Yes
1990	365	100%	Yes
1991	363	99%	Yes
1992	356	97%	Yes
1993	364	100%	Yes
1994	365	100%	Yes
1995	365	100%	Yes
1996	365	100%	Yes
1997	365	100%	Yes
1998	365	100%	Yes
1999	184	50%	No
2000	314	86%	No
2001	211	58%	No

Latest Records

Latest records at San Carlos I
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 July 2001	San Carlos I, MX	daily rain	45.2 mm (1.8 in)	1.0 mm (0.04 in)	8 years	5 of 100 (Routine)
2 June 2001	San Carlos I, MX	daily rain	24.4 mm (1.0 in)	1.0 mm (0.04 in)	4 years	4 of 100 (Routine)
30 May 2001	San Carlos I, MX	daily rain	19.3 mm (0.8 in)	0.5 mm (0.02 in)	4 years	4 of 100 (Routine)
22 May 2001	San Carlos I, MX	daily rain	6.9 mm (0.27 in)	4.1 mm (0.16 in)	31 years	16 of 100 (Routine)
11 May 2001	San Carlos I, MX	daily rain	1.5 mm (0.06 in)	1.5 mm (0.06 in)	32 years	13 of 100 (Routine)
8 May 2001	San Carlos I, MX	daily rain	5.8 mm (0.23 in)	5.8 mm (0.23 in)	32 years	18 of 100 (Routine)
2 March 2001	San Carlos I, MX	monthly rain	28.4 mm (1.1 in)	0.5 mm (0.02 in)	12 years	16 of 100 (Routine)
30 December 2000	San Carlos I, MX	monthly rain	29.5 mm (1.2 in)	5.1 mm (0.20 in)	10 years	21 of 100 (Routine)
6 October 2000	San Carlos I, MX	daily rain	51.8 mm (2.0 in)	14.5 mm (0.6 in)	18 years	17 of 100 (Routine)
20 September 2000	San Carlos I, MX	daily rain	39.9 mm (1.6 in)	0.5 mm (0.02 in)	9 years	5 of 100 (Routine)
12 June 2000	San Carlos I, MX	daily rain	57.7 mm (2.3 in)	5.4 mm (0.21 in)	16 years	10 of 100 (Routine)
8 June 2000	San Carlos I, MX	daily rain	39.9 mm (1.6 in)	1.0 mm (0.04 in)	25 years	10 of 100 (Routine)
17 October 1999	San Carlos I, MX	daily rain	22.1 mm (0.9 in)	9.1 mm (0.36 in)	24 years	16 of 100 (Routine)
11 October 1999	San Carlos I, MX	daily rain	38.4 mm (1.5 in)	23.4 mm (0.9 in)	25 years	25 of 100 (Routine)
7 October 1999	San Carlos I, MX	daily rain	39.9 mm (1.6 in)	5.1 mm (0.20 in)	25 years	13 of 100 (Routine)
30 September 1999	San Carlos I, MX	daily rain	45.2 mm (1.8 in)	2.0 mm (0.08 in)	4 years	5 of 100 (Routine)
4 September 1999	San Carlos I, MX	daily rain	56.4 mm (2.2 in)	10.2 mm (0.4 in)	8 years	10 of 100 (Routine)

Climate Trend

18 complete years, 1979 to 1998

One stripe for each of 18 complete years at San Carlos I, 1979 to 1998. Blue stripes are years cooler than the station's own mean of 25.1 C (77.2 F); red stripes are warmer. The coolest year was 1998, at 24.5 C (76.1 F), and the warmest was 1980, at 26.1 C (79.0 F). The strongest colour marks a difference of 1.1 C (2.0 F).

Annual mean temperature at San Carlos I as warming stripes, 1979 to 1998
Year	Annual mean temperature	Difference from the station mean
1979	25.6 C	+0.53 C
1980	26.1 C	+1.01 C
1981	24.9 C	-0.18 C
1982	25.7 C	+0.62 C
1983	24.9 C	-0.21 C
1984	24.7 C	-0.36 C
1986	24.8 C	-0.35 C
1988	25.0 C	-0.13 C
1989	24.8 C	-0.27 C
1990	25.2 C	+0.06 C
1991	25.1 C	+0.02 C
1992	24.6 C	-0.46 C
1993	25.3 C	+0.17 C
1994	25.7 C	+0.56 C
1995	25.3 C	+0.21 C
1996	24.8 C	-0.28 C
1997	24.8 C	-0.31 C
1998	24.5 C	-0.59 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

1969 to 2001

Yearly extremes at San Carlos I: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	48.9 C (120.0 F)	1998	42.0 C (107.5 F)	24
Coldest night (TNn)	3.9 C (39.0 F)	1997	7.5 C (45.5 F)	24
Wettest day (Rx1day)	178.8 mm (7.0 in)	1998	69.9 mm (2.8 in)	33
Wettest five days (Rx5day)	316.9 mm (12.5 in)	1998	135.0 mm (5.3 in)	33
Longest dry spell (CDD)	163 days	1989	109 days	33

Hottest day (TXx)

The hottest day of the year at San Carlos I, 1969 to 2001. The record is 48.9 C (120.0 F) in 1998, marked on the chart; the median year is 42.0 C (107.5 F).

Hottest day (TXx) at San Carlos I by year
Year	Hottest day (TXx)
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	36.7 C (98.1 F)
1979	40.6 C (105.1 F)
1980	42.2 C (108.0 F)
1981	42.2 C (108.0 F)
1982	42.2 C (108.0 F)
1983	42.2 C (108.0 F)
1984	41.7 C (107.1 F)
1985	40.0 C (104.0 F)
1986	42.2 C (108.0 F)
1987	42.2 C (108.0 F)
1988	42.8 C (109.0 F)
1989	42.2 C (108.0 F)
1990	41.7 C (107.1 F)
1991	42.2 C (108.0 F)
1992	41.1 C (106.0 F)
1993	41.7 C (107.1 F)
1994	41.7 C (107.1 F)
1995	41.7 C (107.1 F)
1996	41.7 C (107.1 F)
1997	42.8 C (109.0 F)
1998	48.9 C (120.0 F)
1999	35.0 C (95.0 F)
2000	41.7 C (107.1 F)
2001	43.9 C (111.0 F)

Coldest night (TNn)

The coldest night of the year at San Carlos I, 1969 to 2001. The record is 3.9 C (39.0 F) in 1997, marked on the chart; the median year is 7.5 C (45.5 F).

Coldest night (TNn) at San Carlos I by year
Year	Coldest night (TNn)
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	10.6 C (51.1 F)
1979	7.8 C (46.0 F)
1980	8.3 C (46.9 F)
1981	6.7 C (44.1 F)
1982	7.2 C (45.0 F)
1983	6.1 C (43.0 F)
1984	8.9 C (48.0 F)
1985	8.3 C (46.9 F)
1986	5.0 C (41.0 F)
1987	8.9 C (48.0 F)
1988	5.0 C (41.0 F)
1989	6.7 C (44.1 F)
1990	7.8 C (46.0 F)
1991	7.2 C (45.0 F)
1992	7.8 C (46.0 F)
1993	8.3 C (46.9 F)
1994	7.8 C (46.0 F)
1995	8.9 C (48.0 F)
1996	7.8 C (46.0 F)
1997	3.9 C (39.0 F)
1998	3.9 C (39.0 F)
1999	3.9 C (39.0 F)
2000	5.6 C (42.1 F)
2001	5.6 C (42.1 F)

Wettest day (Rx1day)

The wettest day of the year at San Carlos I, 1969 to 2001. The record is 178.8 mm (7.0 in) in 1998, marked on the chart; the median year is 69.9 mm (2.8 in).

Wettest day (Rx1day) at San Carlos I by year
Year	Wettest day (Rx1day)
1969	79.2 mm (3.1 in)
1970	39.9 mm (1.6 in)
1971	52.8 mm (2.1 in)
1972	74.9 mm (2.9 in)
1973	69.9 mm (2.8 in)
1974	40.4 mm (1.6 in)
1975	84.8 mm (3.3 in)
1976	59.9 mm (2.4 in)
1977	65.5 mm (2.6 in)
1978	59.9 mm (2.4 in)
1979	68.3 mm (2.7 in)
1980	62.5 mm (2.5 in)
1981	72.9 mm (2.9 in)
1982	56.4 mm (2.2 in)
1983	67.8 mm (2.7 in)
1984	92.5 mm (3.6 in)
1985	92.5 mm (3.6 in)
1986	67.3 mm (2.6 in)
1987	71.9 mm (2.8 in)
1988	120.4 mm (4.7 in)
1989	82.6 mm (3.3 in)
1990	79.2 mm (3.1 in)
1991	59.2 mm (2.3 in)
1992	79.8 mm (3.1 in)
1993	89.9 mm (3.5 in)
1994	96.8 mm (3.8 in)
1995	83.1 mm (3.3 in)
1996	72.9 mm (2.9 in)
1997	44.5 mm (1.8 in)
1998	178.8 mm (7.0 in)
1999	56.4 mm (2.2 in)
2000	57.7 mm (2.3 in)
2001	59.9 mm (2.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at San Carlos I, 1969 to 2001. The record is 316.9 mm (12.5 in) in 1998, marked on the chart; the median year is 135.0 mm (5.3 in).

Wettest five days (Rx5day) at San Carlos I by year
Year	Wettest five days (Rx5day)
1969	166.0 mm (6.5 in)
1970	42.7 mm (1.7 in)
1971	129.3 mm (5.1 in)
1972	148.1 mm (5.8 in)
1973	135.0 mm (5.3 in)
1974	100.9 mm (4.0 in)
1975	172.1 mm (6.8 in)
1976	118.4 mm (4.7 in)
1977	113.6 mm (4.5 in)
1978	98.0 mm (3.9 in)
1979	149.6 mm (5.9 in)
1980	132.6 mm (5.2 in)
1981	193.4 mm (7.6 in)
1982	108.8 mm (4.3 in)
1983	174.8 mm (6.9 in)
1984	186.8 mm (7.4 in)
1985	184.2 mm (7.3 in)
1986	157.4 mm (6.2 in)
1987	118.7 mm (4.7 in)
1988	192.6 mm (7.6 in)
1989	112.7 mm (4.4 in)
1990	123.0 mm (4.8 in)
1991	118.9 mm (4.7 in)
1992	137.7 mm (5.4 in)
1993	193.2 mm (7.6 in)
1994	119.7 mm (4.7 in)
1995	167.4 mm (6.6 in)
1996	132.1 mm (5.2 in)
1997	83.7 mm (3.3 in)
1998	316.9 mm (12.5 in)
1999	100.1 mm (3.9 in)
2000	155.8 mm (6.1 in)
2001	162.4 mm (6.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at San Carlos I, 1969 to 2001. The record is 163 days in 1989, marked on the chart; the median year is 109 days.

Longest dry spell (CDD) at San Carlos I by year
Year	Longest dry spell (CDD)
1969	143 days
1970	141 days
1971	50 days
1972	72 days
1973	128 days
1974	156 days
1975	109 days
1976	148 days
1977	84 days
1978	120 days
1979	92 days
1980	115 days
1981	59 days
1982	52 days
1983	71 days
1984	127 days
1985	70 days
1986	140 days
1987	76 days
1988	99 days
1989	163 days
1990	66 days
1991	126 days
1992	80 days
1993	160 days
1994	124 days
1995	78 days
1996	138 days
1997	78 days
1998	159 days
1999	73 days
2000	142 days
2001	66 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 San Carlos I standing records by year: CSV or JSON. Field meanings are on the data page.
Data for San Carlos I 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).