Nacaltepec Threshold Days by Year (MXN00020073)

12 fixed thresholds counted per year at Nacaltepec (MXN00020073): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Nacaltepec Thresholds

Nacaltepec: days with a maximum temperature at or above 30 C (86 F) in 29 years, most in 2002 with 291.
Nacaltepec: days with 10 mm (0.39 in) or more of precipitation in 29 years, most in 2010 with 41.
Nacaltepec: days with 25 mm (0.98 in) or more of precipitation in 27 years, most in 2010 with 18.
Nacaltepec: days with a maximum temperature at or above 90 F (32.2 C) in 22 years, most in 2002 with 233.
12 fixed thresholds have at least one qualifying day at Nacaltepec.

Days at or above 30 C (86 F)

29 years with a qualifying day

Days per year at Nacaltepec with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 291 in 2002.

Days at or above 30 C (86 F) per year at Nacaltepec
Year	Days	Decade average
1970	28	22.2
1971	15	22.2
1972	12	22.2
1973	39	22.2
1974	11	22.2
1975	29	22.2
1976	10	22.2
1977	18	22.2
1978	37	22.2
1979	23	22.2
1980	16	20
1981	15	20
1982	10	20
1983	27	20
1984	32	20
1991	41	29.8
1992	22	29.8
1993	42	29.8
1995	14	29.8
2001	280	90.7
2002	291	90.7
2003	86	90.7
2004	29	90.7
2005	53	90.7
2006	24	90.7
2007	24	90.7
2008	15	90.7
2009	14	90.7
2010	72	72

For each year, a bar from the first to the last day at Nacaltepec meeting 30 C (86 F).

First to last qualifying date each year at Nacaltepec
Year	First date	Last date
1970	1970-03-19	1970-05-31
1971	1971-04-20	1971-05-24
1972	1972-03-29	1972-05-24
1973	1973-03-07	1973-05-28
1974	1974-03-21	1974-05-12
1975	1975-03-10	1975-05-11
1976	1976-03-19	1976-05-31
1977	1977-03-05	1977-05-29
1978	1978-02-27	1978-05-18
1979	1979-03-01	1979-05-11
1980	1980-03-17	1980-05-25
1981	1981-03-28	1981-05-20
1982	1982-03-23	1982-09-11
1983	1983-04-13	1983-06-06
1984	1984-03-26	1984-05-23
1991	1991-03-12	1991-06-12
1992	1992-03-02	1992-06-21
1993	1993-02-18	1993-06-08
1995	1995-01-07	1995-04-27
2001	2001-01-05	2001-12-25
2002	2002-01-01	2002-12-31
2003	2003-01-01	2003-08-30
2004	2004-02-23	2004-07-29
2005	2005-02-27	2005-06-13
2006	2006-03-11	2006-05-09
2007	2007-02-02	2007-06-23
2008	2008-04-01	2008-05-11
2009	2009-03-10	2009-05-09
2010	2010-01-23	2010-06-28

Every Fixed Threshold

Fixed thresholds at Nacaltepec
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	29	291	2002	72
35 C (95 F): Days	10	147	2002	7
40 C (104 F): Days	3	40	2002	2
45 C (113 F): Days	1	1	2002	1
90 F (32.2 C): Days	22	233	2002	30
100 F (37.8 C): Days	3	79	2002	5
110 F (43.3 C): Days	2	2	2001	2
0 C (32 F): Frost days (min	12	13	1970	1
10 mm (0.39 in): Days with 10 mm or more rain	29	41	2010	41
25 mm (0.98 in): Days with 25 mm or more rain	27	18	2010	18
50 mm (1.97 in): Days with 50 mm or more rain	13	4	2010	4
100 mm (3.94 in): Days with 100 mm or more rain	1	1	2005	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1970.

Download the Data

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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Nacaltepec Threshold Days by Year (MXN00020073)

Key Facts for Nacaltepec Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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