Nacaltepec Weather Records (MXN00020073)

Record envelope, standing records and threshold days for Nacaltepec (MXN00020073), Mexico, with 42 years of record.

Key Facts for Nacaltepec

Nacaltepec (MXN00020073) is a weather station in Mexico at 17.52 latitude and -96.92 longitude, 2,101 m (6,893 ft) above sea level.
The station reports from 1969 to 2010, 42 years of record.
1,464 records set at Nacaltepec still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Mexico, 17.52 latitude, -96.92 longitude.
Elevation: 2,101 m (6,893 ft).
Period of record: 1969 to 2010, 42 years.
Eligible elements: none yet.

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 Nacaltepec. 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 Nacaltepec, 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)	-1.1 C (30.0 F)	n/a	n/a
Feb	37.2 C (99.0 F)	-5.0 C (23.0 F)	n/a	n/a
Mar	41.7 C (107.1 F)	-1.1 C (30.0 F)	n/a	n/a
Apr	42.8 C (109.0 F)	0.0 C (32.0 F)	n/a	n/a
May	45.0 C (113.0 F)	1.7 C (35.1 F)	n/a	n/a
Jun	38.9 C (102.0 F)	3.9 C (39.0 F)	n/a	n/a
Jul	38.9 C (102.0 F)	3.9 C (39.0 F)	n/a	n/a
Aug	38.9 C (102.0 F)	3.9 C (39.0 F)	n/a	n/a
Sep	37.8 C (100.0 F)	3.9 C (39.0 F)	n/a	n/a
Oct	36.7 C (98.1 F)	0.6 C (33.1 F)	n/a	n/a
Nov	35.6 C (96.1 F)	-4.4 C (24.1 F)	n/a	n/a
Dec	33.3 C (91.9 F)	-5.0 C (23.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Nacaltepec still stand. 2002 holds the most, with 240.

Standing records at Nacaltepec by the year they were set
Year set	Standing records
1969	10
1970	43
1971	35
1972	32
1973	36
1974	29
1975	49
1976	52
1977	29
1978	35
1979	30
1980	20
1981	17
1982	23
1983	32
1984	33
1991	26
1992	17
1993	68
1994	32
1995	84
1996	46
2001	163
2002	240
2003	67
2004	26
2005	39
2006	28
2007	32
2008	19
2009	51
2010	21

Wettest Day of Each Month

Oct: 115.3 mm (4.5 in)

The wettest day on record for each calendar month at Nacaltepec. The most was 115.3 mm (4.5 in) on 4 October 2005.

Record daily precipitation for each month at Nacaltepec
Month	Record daily precipitation (mm)	Date
Jan	17.3 mm (0.7 in)	29 January 2010
Feb	20.6 mm (0.8 in)	25 February 1983
Mar	21.6 mm (0.9 in)	13 March 1983
Apr	44.5 mm (1.8 in)	12 April 2010
May	48.8 mm (1.9 in)	21 May 1975
Jun	75.4 mm (3.0 in)	29 June 2010
Jul	65.8 mm (2.6 in)	7 July 2010
Aug	72.9 mm (2.9 in)	23 August 2002
Sep	75.4 mm (3.0 in)	20 September 1974
Oct	115.3 mm (4.5 in)	4 October 2005
Nov	25.4 mm (1.0 in)	20 November 1974
Dec	14.5 mm (0.6 in)	26 December 2001

Period of Record Coverage

1969 to 2010

32 years of record at Nacaltepec, 1969 to 2010. 3 years have data for under 90 percent of days and are left out of rankings: 1969, 1994, 1996.

Days with data per year at Nacaltepec
Year	Days with data	Share of year	Complete
1969	61	17%	No
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	364	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	364	100%	Yes
1980	336	92%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	333	91%	Yes
1984	335	92%	Yes
1991	339	93%	Yes
1992	364	99%	Yes
1993	359	98%	Yes
1994	171	47%	No
1995	358	98%	Yes
1996	172	47%	No
2001	360	99%	Yes
2002	356	98%	Yes
2003	364	100%	Yes
2004	365	100%	Yes
2005	363	99%	Yes
2006	365	100%	Yes
2007	365	100%	Yes
2008	365	100%	Yes
2009	360	99%	Yes
2010	364	100%	Yes

Latest Records

No records were set at this station in the latest data.

Climate Trend

26 complete years, 1970 to 2010

One stripe for each of 26 complete years at Nacaltepec, 1970 to 2010. Blue stripes are years cooler than the station's own mean of 16.9 C (62.4 F); red stripes are warmer. The coolest year was 1995, at 14.6 C (58.2 F), and the warmest was 2002, at 22.6 C (72.7 F). The strongest colour marks a difference of 5.8 C (10.4 F).

Annual mean temperature at Nacaltepec as warming stripes, 1970 to 2010
Year	Annual mean temperature	Difference from the station mean
1970	15.8 C	-1.06 C
1971	15.9 C	-1.01 C
1972	16.7 C	-0.22 C
1973	17.0 C	+0.16 C
1974	15.9 C	-0.99 C
1975	15.5 C	-1.35 C
1976	15.8 C	-1.10 C
1977	16.3 C	-0.56 C
1978	16.2 C	-0.68 C
1979	15.9 C	-0.94 C
1981	16.0 C	-0.93 C
1982	15.9 C	-0.98 C
1991	15.8 C	-1.07 C
1992	15.7 C	-1.17 C
1993	15.3 C	-1.60 C
1995	14.6 C	-2.33 C
2001	22.0 C	+5.13 C
2002	22.6 C	+5.71 C
2003	18.8 C	+1.90 C
2004	17.8 C	+0.93 C
2005	18.0 C	+1.09 C
2006	17.3 C	+0.40 C
2007	17.7 C	+0.83 C
2008	17.0 C	+0.07 C
2009	15.6 C	-1.29 C
2010	18.0 C	+1.12 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 2010

Yearly extremes at Nacaltepec: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	45.0 C (113.0 F)	2002	33.6 C (92.5 F)	32
Coldest night (TNn)	-5.0 C (23.0 F)	1970	0.6 C (33.1 F)	32
Wettest day (Rx1day)	115.3 mm (4.5 in)	2005	47.9 mm (1.9 in)	32
Wettest five days (Rx5day)	165.8 mm (6.5 in)	1975	102.1 mm (4.0 in)	32
Longest dry spell (CDD)	125 days	1992	61 days	32

Hottest day (TXx)

The hottest day of the year at Nacaltepec, 1969 to 2010. The record is 45.0 C (113.0 F) in 2002, marked on the chart; the median year is 33.6 C (92.5 F).

Hottest day (TXx) at Nacaltepec by year
Year	Hottest day (TXx)
1969	28.9 C (84.0 F)
1970	32.8 C (91.0 F)
1971	32.8 C (91.0 F)
1972	30.6 C (87.1 F)
1973	36.7 C (98.1 F)
1974	31.7 C (89.1 F)
1975	32.8 C (91.0 F)
1976	31.7 C (89.1 F)
1977	32.8 C (91.0 F)
1978	33.9 C (93.0 F)
1979	33.9 C (93.0 F)
1980	30.6 C (87.1 F)
1981	32.8 C (91.0 F)
1982	30.6 C (87.1 F)
1983	33.3 C (91.9 F)
1984	34.4 C (93.9 F)
1991	36.7 C (98.1 F)
1992	31.7 C (89.1 F)
1993	33.9 C (93.0 F)
1994	25.6 C (78.1 F)
1995	31.7 C (89.1 F)
1996	32.8 C (91.0 F)
2001	44.4 C (111.9 F)
2002	45.0 C (113.0 F)
2003	41.7 C (107.1 F)
2004	35.0 C (95.0 F)
2005	34.4 C (93.9 F)
2006	33.9 C (93.0 F)
2007	35.0 C (95.0 F)
2008	35.0 C (95.0 F)
2009	36.1 C (97.0 F)
2010	35.6 C (96.1 F)

Coldest night (TNn)

The coldest night of the year at Nacaltepec, 1969 to 2010. The record is -5.0 C (23.0 F) in 1970, marked on the chart; the median year is 0.6 C (33.1 F).

Coldest night (TNn) at Nacaltepec by year
Year	Coldest night (TNn)
1969	0.6 C (33.1 F)
1970	-5.0 C (23.0 F)
1971	0.0 C (32.0 F)
1972	-2.2 C (28.0 F)
1973	-1.1 C (30.0 F)
1974	-1.1 C (30.0 F)
1975	0.0 C (32.0 F)
1976	-5.0 C (23.0 F)
1977	0.6 C (33.1 F)
1978	0.6 C (33.1 F)
1979	0.6 C (33.1 F)
1980	0.0 C (32.0 F)
1981	0.0 C (32.0 F)
1982	0.6 C (33.1 F)
1983	0.0 C (32.0 F)
1984	0.6 C (33.1 F)
1991	0.6 C (33.1 F)
1992	1.7 C (35.1 F)
1993	1.7 C (35.1 F)
1994	0.6 C (33.1 F)
1995	2.8 C (37.0 F)
1996	3.9 C (39.0 F)
2001	3.9 C (39.0 F)
2002	2.2 C (36.0 F)
2003	2.8 C (37.0 F)
2004	1.7 C (35.1 F)
2005	3.9 C (39.0 F)
2006	0.0 C (32.0 F)
2007	4.4 C (39.9 F)
2008	3.3 C (37.9 F)
2009	0.0 C (32.0 F)
2010	2.8 C (37.0 F)

Wettest day (Rx1day)

The wettest day of the year at Nacaltepec, 1969 to 2010. The record is 115.3 mm (4.5 in) in 2005, marked on the chart; the median year is 47.9 mm (1.9 in).

Wettest day (Rx1day) at Nacaltepec by year
Year	Wettest day (Rx1day)
1969	4.1 mm (0.16 in)
1970	45.5 mm (1.8 in)
1971	39.9 mm (1.6 in)
1972	45.0 mm (1.8 in)
1973	57.4 mm (2.3 in)
1974	75.4 mm (3.0 in)
1975	54.6 mm (2.1 in)
1976	47.5 mm (1.9 in)
1977	54.9 mm (2.2 in)
1978	43.7 mm (1.7 in)
1979	51.8 mm (2.0 in)
1980	53.8 mm (2.1 in)
1981	40.1 mm (1.6 in)
1982	48.3 mm (1.9 in)
1983	60.2 mm (2.4 in)
1984	48.3 mm (1.9 in)
1991	17.8 mm (0.7 in)
1992	30.5 mm (1.2 in)
1993	26.2 mm (1.0 in)
1994	24.4 mm (1.0 in)
1995	15.7 mm (0.6 in)
1996	40.6 mm (1.6 in)
2001	39.4 mm (1.6 in)
2002	72.9 mm (2.9 in)
2003	52.3 mm (2.1 in)
2004	48.3 mm (1.9 in)
2005	115.3 mm (4.5 in)
2006	41.4 mm (1.6 in)
2007	69.9 mm (2.8 in)
2008	70.9 mm (2.8 in)
2009	46.5 mm (1.8 in)
2010	75.4 mm (3.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Nacaltepec, 1969 to 2010. The record is 165.8 mm (6.5 in) in 1975, marked on the chart; the median year is 102.1 mm (4.0 in).

Wettest five days (Rx5day) at Nacaltepec by year
Year	Wettest five days (Rx5day)
1969	7.8 mm (0.31 in)
1970	120.9 mm (4.8 in)
1971	84.9 mm (3.3 in)
1972	66.7 mm (2.6 in)
1973	97.0 mm (3.8 in)
1974	128.1 mm (5.0 in)
1975	165.8 mm (6.5 in)
1976	100.2 mm (3.9 in)
1977	104.0 mm (4.1 in)
1978	113.6 mm (4.5 in)
1979	138.9 mm (5.5 in)
1980	116.9 mm (4.6 in)
1981	79.9 mm (3.1 in)
1982	70.9 mm (2.8 in)
1983	141.5 mm (5.6 in)
1984	116.1 mm (4.6 in)
1991	46.5 mm (1.8 in)
1992	30.5 mm (1.2 in)
1993	107.0 mm (4.2 in)
1994	45.5 mm (1.8 in)
1995	30.7 mm (1.2 in)
1996	92.2 mm (3.6 in)
2001	107.7 mm (4.2 in)
2002	85.3 mm (3.4 in)
2003	118.4 mm (4.7 in)
2004	89.5 mm (3.5 in)
2005	138.5 mm (5.5 in)
2006	58.0 mm (2.3 in)
2007	110.8 mm (4.4 in)
2008	111.2 mm (4.4 in)
2009	97.5 mm (3.8 in)
2010	141.1 mm (5.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Nacaltepec, 1969 to 2010. The record is 125 days in 1992, marked on the chart; the median year is 61 days.

Longest dry spell (CDD) at Nacaltepec by year
Year	Longest dry spell (CDD)
1969	43 days
1970	85 days
1971	62 days
1972	77 days
1973	77 days
1974	45 days
1975	46 days
1976	52 days
1977	62 days
1978	35 days
1979	44 days
1980	64 days
1981	64 days
1982	60 days
1983	73 days
1984	45 days
1991	115 days
1992	125 days
1993	99 days
1994	58 days
1995	62 days
1996	66 days
2001	57 days
2002	45 days
2003	114 days
2004	57 days
2005	110 days
2006	59 days
2007	68 days
2008	59 days
2009	51 days
2010	57 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 Nacaltepec standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Nacaltepec 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 2026-10-15 (15 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).