Caltepec Weather Records (MXN00021019)

Record envelope, standing records and threshold days for Caltepec (MXN00021019), Mexico, with 56 years of record.

Key Facts for Caltepec

Caltepec (MXN00021019) is a weather station in Mexico at 18.20 latitude and -97.45 longitude, 2,275 m (7,463 ft) above sea level.
The station reports from 1954 to 2009, 56 years of record.
1,464 records set at Caltepec still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Caltepec set a daily record high minimum temperature of 10.6 C (51.1 F) on 29 December 2009.

About the Station

Location: Mexico, 18.20 latitude, -97.45 longitude.
Elevation: 2,275 m (7,463 ft).
Period of record: 1954 to 2009, 56 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 Caltepec. 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 Caltepec, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	33.3 C (91.9 F)	-5.0 C (23.0 F)	n/a	n/a
Feb	35.0 C (95.0 F)	-4.4 C (24.1 F)	n/a	n/a
Mar	39.4 C (102.9 F)	-1.7 C (28.9 F)	n/a	n/a
Apr	36.7 C (98.1 F)	0.6 C (33.1 F)	n/a	n/a
May	38.9 C (102.0 F)	6.7 C (44.1 F)	n/a	n/a
Jun	35.0 C (95.0 F)	7.8 C (46.0 F)	n/a	n/a
Jul	31.7 C (89.1 F)	3.9 C (39.0 F)	n/a	n/a
Aug	35.0 C (95.0 F)	7.8 C (46.0 F)	n/a	n/a
Sep	33.3 C (91.9 F)	5.6 C (42.1 F)	n/a	n/a
Oct	33.3 C (91.9 F)	2.8 C (37.0 F)	n/a	n/a
Nov	35.6 C (96.1 F)	0.0 C (32.0 F)	n/a	n/a
Dec	33.9 C (93.0 F)	-4.4 C (24.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Caltepec still stand. 2008 holds the most, with 74.

Standing records at Caltepec by the year they were set
Year set	Standing records
1954	13
1955	64
1956	48
1957	38
1958	57
1959	50
1960	40
1961	30
1962	46
1963	28
1964	27
1966	35
1967	16
1968	23
1969	25
1970	19
1971	28
1972	23
1973	19
1974	30
1975	29
1976	29
1977	33
1978	26
1979	32
1980	19
1981	13
1982	20
1983	32
1984	31
1987	32
1988	6
1989	30
1990	7
1991	17
1992	19
1993	22
1994	16
1995	12
1996	23
1997	36
1998	35
1999	21
2000	18
2001	15
2002	59
2007	66
2008	74
2009	33

All-Time Record Progression

5 new records

5 all-time records were set at Caltepec between 23 June 1988 and 3 March 2008. Each dot is a new record.

When Caltepec set new all-time records
Date	Kind	Detail
1988-06-23	Record daily precipitation	Record daily precipitation 88.6 mm (3.5 in)
1998-05-08	Record high maximum temperature	Record high maximum temperature 37.8 C (100.0 F)
1998-05-11	Record high maximum temperature	Record high maximum temperature 38.9 C (102.0 F)
2007-09-28	Record high minimum temperature	Record high minimum temperature 20.0 C (68.0 F)
2008-03-03	Record high maximum temperature	Record high maximum temperature 39.4 C (102.9 F)

Wettest Day of Each Month

Jun: 88.6 mm (3.5 in)

The wettest day on record for each calendar month at Caltepec. The most was 88.6 mm (3.5 in) on 23 June 1988.

Record daily precipitation for each month at Caltepec
Month	Record daily precipitation (mm)	Date
Jan	23.9 mm (0.9 in)	19 January 1958
Feb	27.4 mm (1.1 in)	25 February 1983
Mar	38.4 mm (1.5 in)	18 March 1969
Apr	38.6 mm (1.5 in)	27 April 2001
May	33.5 mm (1.3 in)	28 May 1988
Jun	88.6 mm (3.5 in)	23 June 1988
Jul	55.4 mm (2.2 in)	15 July 1972
Aug	81.0 mm (3.2 in)	17 August 1981
Sep	55.9 mm (2.2 in)	9 September 1958
Oct	47.0 mm (1.9 in)	16 October 1999
Nov	29.0 mm (1.1 in)	3 November 1961
Dec	37.8 mm (1.5 in)	26 December 2001

Period of Record Coverage

1954 to 2009

49 years of record at Caltepec, 1954 to 2009. 6 years have data for under 90 percent of days and are left out of rankings: 1954, 1995, 1996, 2007, 2008, 2009.

Days with data per year at Caltepec
Year	Days with data	Share of year	Complete
1954	76	21%	No
1955	365	100%	Yes
1956	366	100%	Yes
1957	365	100%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	366	100%	Yes
1961	365	100%	Yes
1962	364	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	362	99%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	364	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	364	100%	Yes
1984	335	92%	Yes
1987	365	100%	Yes
1988	335	92%	Yes
1989	365	100%	Yes
1990	334	92%	Yes
1991	334	92%	Yes
1992	363	99%	Yes
1993	364	100%	Yes
1994	334	92%	Yes
1995	120	33%	No
1996	122	33%	No
1997	365	100%	Yes
1998	334	92%	Yes
1999	363	99%	Yes
2000	362	99%	Yes
2001	362	99%	Yes
2002	364	100%	Yes
2007	288	79%	No
2008	293	80%	No
2009	263	72%	No

Latest Records

Latest records at Caltepec
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
29 December 2009	Caltepec, MX	daily high min	10.6 C (51.1 F)	0.6 C (1.1 F)	12 years	10 of 100 (Routine)
25 December 2009	Caltepec, MX	daily low max	16.7 C (62.1 F)	2.2 C (4.0 F)	48 years	26 of 100 (Routine)
24 December 2009	Caltepec, MX	daily high min (Tie)	10.0 C (50.0 F)	tie	47 years	4 of 100 (Routine)
19 December 2009	Caltepec, MX	daily high max (Tie)	30.0 C (86.0 F)	tie	0 years	1 of 100 (Routine)
14 December 2009	Caltepec, MX	daily high max	30.0 C (86.0 F)	2.2 C (4.0 F)	42 years	24 of 100 (Routine)
13 December 2009	Caltepec, MX	daily high max	32.8 C (91.0 F)	3.9 C (7.0 F)	12 years	21 of 100 (Routine)
12 December 2009	Caltepec, MX	daily high max	32.8 C (91.0 F)	3.9 C (7.0 F)	28 years	26 of 100 (Routine)
7 December 2009	Caltepec, MX	daily high max (Tie)	30.0 C (86.0 F)	tie	7 years	1 of 100 (Routine)
5 December 2009	Caltepec, MX	daily high max	31.1 C (88.0 F)	2.2 C (4.0 F)	31 years	21 of 100 (Routine)
24 November 2009	Caltepec, MX	daily rain	17.8 mm (0.7 in)	17.5 mm (0.7 in)	47 years	20 of 100 (Routine)
21 November 2009	Caltepec, MX	daily high max (Tie)	30.0 C (86.0 F)	tie	52 years	5 of 100 (Routine)
19 November 2009	Caltepec, MX	daily high max (Tie)	30.0 C (86.0 F)	tie	27 years	3 of 100 (Routine)
16 November 2009	Caltepec, MX	daily high max (Tie)	30.6 C (87.1 F)	tie	52 years	5 of 100 (Routine)
30 August 2009	Caltepec, MX	daily high min (Tie)	15.0 C (59.0 F)	tie	51 years	5 of 100 (Routine)
29 August 2009	Caltepec, MX	daily low max	21.1 C (70.0 F)	0.6 C (1.1 F)	40 years	19 of 100 (Routine)
28 August 2009	Caltepec, MX	daily high max (Tie)	30.0 C (86.0 F)	tie	31 years	3 of 100 (Routine)
24 August 2009	Caltepec, MX	daily low max (Tie)	20.6 C (69.1 F)	tie	44 years	4 of 100 (Routine)
23 August 2009	Caltepec, MX	monthly low max (Tie)	20.0 C (68.0 F)	tie	50 years	7 of 100 (Routine)
23 August 2009	Caltepec, MX	daily high min (Tie)	15.0 C (59.0 F)	tie	48 years	4 of 100 (Routine)
22 August 2009	Caltepec, MX	daily low max (Tie)	20.6 C (69.1 F)	tie	40 years	4 of 100 (Routine)

Climate Trend

37 complete years, 1955 to 2002

One stripe for each of 37 complete years at Caltepec, 1955 to 2002. Blue stripes are years cooler than the station's own mean of 18.1 C (64.6 F); red stripes are warmer. The coolest year was 1974, at 17.4 C (63.3 F), and the warmest was 1997, at 19.0 C (66.2 F). The strongest colour marks a difference of 0.9 C (1.6 F).

Annual mean temperature at Caltepec as warming stripes, 1955 to 2002
Year	Annual mean temperature	Difference from the station mean
1955	17.9 C	-0.24 C
1956	17.7 C	-0.46 C
1957	18.4 C	+0.26 C
1958	18.1 C	-0.03 C
1959	17.8 C	-0.30 C
1960	18.0 C	-0.10 C
1961	18.3 C	+0.16 C
1962	18.3 C	+0.21 C
1963	18.0 C	-0.09 C
1964	18.5 C	+0.41 C
1966	17.8 C	-0.36 C
1967	17.8 C	-0.35 C
1968	17.5 C	-0.64 C
1969	18.7 C	+0.60 C
1970	18.1 C	-0.03 C
1971	17.7 C	-0.43 C
1972	18.2 C	+0.12 C
1973	18.2 C	+0.08 C
1974	17.4 C	-0.75 C
1975	17.6 C	-0.50 C
1976	17.5 C	-0.67 C
1977	18.3 C	+0.15 C
1978	18.5 C	+0.39 C
1979	18.5 C	+0.37 C
1980	18.5 C	+0.33 C
1981	18.1 C	-0.03 C
1982	18.8 C	+0.68 C
1983	18.9 C	+0.78 C
1987	18.7 C	+0.57 C
1989	17.6 C	-0.48 C
1992	17.9 C	-0.23 C
1993	18.2 C	+0.12 C
1997	19.0 C	+0.89 C
1999	17.5 C	-0.58 C
2000	18.0 C	-0.17 C
2001	18.6 C	+0.48 C
2002	18.0 C	-0.12 C

The fitted trend in annual mean temperature here over 1955 to 2002 is 0.06 C (-0.05 to 0.16) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.1 to 0.3) per decade. The slope is a straight line fitted to 37 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Caltepec
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.06 C (-0.05 to 0.16) per decade	0.1 F (-0.1 to 0.3) per decade	1955 to 2002	37	Not clearly different from zero
Mean daily maximum	0.3 C (0.1 to 0.4) per decade	0.5 F (0.2 to 0.7) per decade	1955 to 2002	37	Rise
Mean daily minimum	-0.14 C (-0.27 to -0.01) per decade	-0.25 F (-0.49 to -0.02) per decade	1955 to 2002	37	Fall

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

1954 to 2009

Yearly extremes at Caltepec: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	39.4 C (102.9 F)	2008	35.0 C (95.0 F)	49
Coldest night (TNn)	-5.0 C (23.0 F)	1956	0.6 C (33.1 F)	49
Wettest day (Rx1day)	88.6 mm (3.5 in)	1988	38.6 mm (1.5 in)	49
Wettest five days (Rx5day)	157.5 mm (6.2 in)	1955	83.6 mm (3.3 in)	49
Longest dry spell (CDD)	151 days	2002	83 days	49

Hottest day (TXx)

The hottest day of the year at Caltepec, 1954 to 2009. The record is 39.4 C (102.9 F) in 2008, marked on the chart; the median year is 35.0 C (95.0 F).

Hottest day (TXx) at Caltepec by year
Year	Hottest day (TXx)
1954	27.8 C (82.0 F)
1955	33.9 C (93.0 F)
1956	33.3 C (91.9 F)
1957	33.9 C (93.0 F)
1958	35.0 C (95.0 F)
1959	35.0 C (95.0 F)
1960	33.9 C (93.0 F)
1961	33.9 C (93.0 F)
1962	35.0 C (95.0 F)
1963	33.9 C (93.0 F)
1964	36.7 C (98.1 F)
1966	35.6 C (96.1 F)
1967	36.7 C (98.1 F)
1968	32.8 C (91.0 F)
1969	35.0 C (95.0 F)
1970	33.9 C (93.0 F)
1971	35.6 C (96.1 F)
1972	33.9 C (93.0 F)
1973	35.6 C (96.1 F)
1974	31.7 C (89.1 F)
1975	35.0 C (95.0 F)
1976	32.8 C (91.0 F)
1977	35.6 C (96.1 F)
1978	35.6 C (96.1 F)
1979	35.6 C (96.1 F)
1980	35.0 C (95.0 F)
1981	33.9 C (93.0 F)
1982	33.9 C (93.0 F)
1983	36.7 C (98.1 F)
1984	34.4 C (93.9 F)
1987	33.9 C (93.0 F)
1988	35.0 C (95.0 F)
1989	32.8 C (91.0 F)
1990	32.8 C (91.0 F)
1991	35.0 C (95.0 F)
1992	32.8 C (91.0 F)
1993	35.0 C (95.0 F)
1994	33.9 C (93.0 F)
1995	35.6 C (96.1 F)
1996	30.6 C (87.1 F)
1997	31.7 C (89.1 F)
1998	38.9 C (102.0 F)
1999	33.9 C (93.0 F)
2000	35.6 C (96.1 F)
2001	37.8 C (100.0 F)
2002	35.0 C (95.0 F)
2007	35.0 C (95.0 F)
2008	39.4 C (102.9 F)
2009	35.6 C (96.1 F)

Coldest night (TNn)

The coldest night of the year at Caltepec, 1954 to 2009. The record is -5.0 C (23.0 F) in 1956, marked on the chart; the median year is 0.6 C (33.1 F).

Coldest night (TNn) at Caltepec by year
Year	Coldest night (TNn)
1954	-2.2 C (28.0 F)
1955	-4.4 C (24.1 F)
1956	-5.0 C (23.0 F)
1957	-2.2 C (28.0 F)
1958	0.0 C (32.0 F)
1959	0.6 C (33.1 F)
1960	-3.3 C (26.1 F)
1961	0.0 C (32.0 F)
1962	0.6 C (33.1 F)
1963	-4.4 C (24.1 F)
1964	2.8 C (37.0 F)
1966	-2.2 C (28.0 F)
1967	-3.3 C (26.1 F)
1968	0.6 C (33.1 F)
1969	1.7 C (35.1 F)
1970	1.7 C (35.1 F)
1971	0.6 C (33.1 F)
1972	-2.2 C (28.0 F)
1973	-3.3 C (26.1 F)
1974	2.8 C (37.0 F)
1975	0.6 C (33.1 F)
1976	-4.4 C (24.1 F)
1977	0.6 C (33.1 F)
1978	2.8 C (37.0 F)
1979	1.7 C (35.1 F)
1980	-2.2 C (28.0 F)
1981	1.7 C (35.1 F)
1982	0.6 C (33.1 F)
1983	1.7 C (35.1 F)
1984	-1.1 C (30.0 F)
1987	-2.2 C (28.0 F)
1988	2.8 C (37.0 F)
1989	0.6 C (33.1 F)
1990	2.8 C (37.0 F)
1991	1.7 C (35.1 F)
1992	0.6 C (33.1 F)
1993	1.7 C (35.1 F)
1994	1.7 C (35.1 F)
1995	2.8 C (37.0 F)
1996	5.0 C (41.0 F)
1997	-2.2 C (28.0 F)
1998	1.7 C (35.1 F)
1999	0.0 C (32.0 F)
2000	0.6 C (33.1 F)
2001	0.6 C (33.1 F)
2002	0.6 C (33.1 F)
2007	2.2 C (36.0 F)
2008	0.0 C (32.0 F)
2009	-2.2 C (28.0 F)

Wettest day (Rx1day)

The wettest day of the year at Caltepec, 1954 to 2009. The record is 88.6 mm (3.5 in) in 1988, marked on the chart; the median year is 38.6 mm (1.5 in).

Wettest day (Rx1day) at Caltepec by year
Year	Wettest day (Rx1day)
1954	5.3 mm (0.21 in)
1955	65.3 mm (2.6 in)
1956	40.1 mm (1.6 in)
1957	26.9 mm (1.1 in)
1958	55.9 mm (2.2 in)
1959	36.8 mm (1.4 in)
1960	54.9 mm (2.2 in)
1961	29.0 mm (1.1 in)
1962	40.9 mm (1.6 in)
1963	31.0 mm (1.2 in)
1964	70.9 mm (2.8 in)
1966	45.5 mm (1.8 in)
1967	37.3 mm (1.5 in)
1968	32.5 mm (1.3 in)
1969	48.3 mm (1.9 in)
1970	49.8 mm (2.0 in)
1971	30.0 mm (1.2 in)
1972	55.4 mm (2.2 in)
1973	55.4 mm (2.2 in)
1974	45.0 mm (1.8 in)
1975	27.7 mm (1.1 in)
1976	38.6 mm (1.5 in)
1977	46.0 mm (1.8 in)
1978	31.8 mm (1.3 in)
1979	45.7 mm (1.8 in)
1980	45.2 mm (1.8 in)
1981	81.0 mm (3.2 in)
1982	38.6 mm (1.5 in)
1983	38.4 mm (1.5 in)
1984	52.6 mm (2.1 in)
1987	31.8 mm (1.3 in)
1988	88.6 mm (3.5 in)
1989	32.8 mm (1.3 in)
1990	19.6 mm (0.8 in)
1991	46.7 mm (1.8 in)
1992	38.1 mm (1.5 in)
1993	46.5 mm (1.8 in)
1994	50.3 mm (2.0 in)
1995	0.0 mm (0.00 in)
1996	11.9 mm (0.5 in)
1997	30.0 mm (1.2 in)
1998	43.9 mm (1.7 in)
1999	47.0 mm (1.9 in)
2000	36.3 mm (1.4 in)
2001	53.6 mm (2.1 in)
2002	33.8 mm (1.3 in)
2007	31.8 mm (1.3 in)
2008	32.3 mm (1.3 in)
2009	31.8 mm (1.3 in)

Wettest five days (Rx5day)

The wettest five days of the year at Caltepec, 1954 to 2009. The record is 157.5 mm (6.2 in) in 1955, marked on the chart; the median year is 83.6 mm (3.3 in).

Wettest five days (Rx5day) at Caltepec by year
Year	Wettest five days (Rx5day)
1954	5.3 mm (0.21 in)
1955	157.5 mm (6.2 in)
1956	115.6 mm (4.6 in)
1957	52.0 mm (2.0 in)
1958	110.5 mm (4.4 in)
1959	96.5 mm (3.8 in)
1960	59.0 mm (2.3 in)
1961	51.9 mm (2.0 in)
1962	104.6 mm (4.1 in)
1963	58.0 mm (2.3 in)
1964	98.3 mm (3.9 in)
1966	90.8 mm (3.6 in)
1967	94.3 mm (3.7 in)
1968	65.0 mm (2.6 in)
1969	83.6 mm (3.3 in)
1970	56.7 mm (2.2 in)
1971	67.1 mm (2.6 in)
1972	88.6 mm (3.5 in)
1973	91.0 mm (3.6 in)
1974	108.0 mm (4.3 in)
1975	95.5 mm (3.8 in)
1976	97.8 mm (3.9 in)
1977	57.7 mm (2.3 in)
1978	59.4 mm (2.3 in)
1979	80.5 mm (3.2 in)
1980	103.1 mm (4.1 in)
1981	133.6 mm (5.3 in)
1982	80.3 mm (3.2 in)
1983	79.9 mm (3.1 in)
1984	132.6 mm (5.2 in)
1987	51.9 mm (2.0 in)
1988	110.0 mm (4.3 in)
1989	64.4 mm (2.5 in)
1990	21.6 mm (0.9 in)
1991	100.6 mm (4.0 in)
1992	69.1 mm (2.7 in)
1993	90.2 mm (3.6 in)
1994	112.2 mm (4.4 in)
1995	0.0 mm (0.00 in)
1996	24.6 mm (1.0 in)
1997	58.7 mm (2.3 in)
1998	98.1 mm (3.9 in)
1999	111.5 mm (4.4 in)
2000	82.6 mm (3.3 in)
2001	98.7 mm (3.9 in)
2002	90.6 mm (3.6 in)
2007	38.9 mm (1.5 in)
2008	62.8 mm (2.5 in)
2009	37.6 mm (1.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Caltepec, 1954 to 2009. The record is 151 days in 2002, marked on the chart; the median year is 83 days.

Longest dry spell (CDD) at Caltepec by year
Year	Longest dry spell (CDD)
1954	50 days
1955	86 days
1956	64 days
1957	46 days
1958	51 days
1959	81 days
1960	113 days
1961	81 days
1962	55 days
1963	95 days
1964	80 days
1966	51 days
1967	78 days
1968	42 days
1969	62 days
1970	83 days
1971	92 days
1972	66 days
1973	95 days
1974	121 days
1975	135 days
1976	115 days
1977	114 days
1978	103 days
1979	88 days
1980	124 days
1981	73 days
1982	83 days
1983	73 days
1984	57 days
1987	105 days
1988	116 days
1989	80 days
1990	129 days
1991	113 days
1992	54 days
1993	63 days
1994	104 days
1995	120 days
1996	95 days
1997	92 days
1998	81 days
1999	83 days
2000	90 days
2001	88 days
2002	151 days
2007	34 days
2008	73 days
2009	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

43 years, 1955 to 2002

A day with at least 41.6 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 89.6 mm (3.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Caltepec: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	41.6 mm (1.6 in)
5 years	53.9 mm (2.1 in)
10 years	62.3 mm (2.5 in)
25 years	73.1 mm (2.9 in)
50 years	81.3 mm (3.2 in)	Longer than the 43 years of record
100 years	89.6 mm (3.5 in)	Longer than the 43 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, 43 years of values from 1955 to 2002.

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: 88.6 mm (3.5 in) in 1988; 81.0 mm (3.2 in) in 1981; 70.9 mm (2.8 in) in 1964.

Download the Data

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