Zacatepec (Obs) Threshold Days by Year (MXN00017042)

11 fixed thresholds counted per year at Zacatepec (Obs) (MXN00017042): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Zacatepec (Obs) Thresholds

Zacatepec (Obs): days with a maximum temperature at or above 30 C (86 F) in 15 years, most in 1945 with 364.
Zacatepec (Obs): days with a maximum temperature at or above 35 C (95 F) in 15 years, most in 1945 with 153.
Zacatepec (Obs): days with a maximum temperature at or above 90 F (32.2 C) in 15 years, most in 1946 with 261.
Zacatepec (Obs): days with a maximum temperature at or above 100 F (37.8 C) in 15 years, most in 1945 with 75.
11 fixed thresholds have at least one qualifying day at Zacatepec (Obs).

Days at or above 30 C (86 F)

15 years with a qualifying day

Days per year at Zacatepec (Obs) with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 364 in 1945.

Days at or above 30 C (86 F) per year at Zacatepec (Obs)
Year	Days	Decade average
1944	331	348.3
1945	364	348.3
1946	359	348.3
1947	339	348.3
1951	335	333.5
1952	351	333.5
1958	311	333.5
1959	337	333.5
1960	313	313
1984	325	332.8
1985	316	332.8
1986	335	332.8
1987	333	332.8
1988	356	332.8
1989	332	332.8

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

First to last qualifying date each year at Zacatepec (Obs)
Year	First date	Last date
1944	1944-01-04	1944-12-31
1945	1945-01-01	1945-12-31
1946	1946-01-01	1946-12-31
1947	1947-01-01	1947-12-31
1951	1951-01-02	1951-12-31
1952	1952-01-01	1952-12-31
1958	1958-01-01	1958-12-27
1959	1959-01-01	1959-12-31
1960	1960-01-01	1960-11-30
1984	1984-01-05	1984-12-31
1985	1985-01-01	1985-12-31
1986	1986-01-02	1986-12-31
1987	1987-01-01	1987-12-31
1988	1988-01-01	1988-12-31
1989	1989-01-01	1989-12-31

Every Fixed Threshold

Fixed thresholds at Zacatepec (Obs)
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	15	364	1945	332
35 C (95 F): Days	15	153	1945	115
40 C (104 F): Days	11	11	1946	5
90 F (32.2 C): Days	15	261	1946	209
100 F (37.8 C): Days	15	75	1945	37
0 C (32 F): Frost days (min	1	1	1944	1
20 C (68 F): Tropical nights (min	15	154	1959	86
25 C (77 F): Days with min	1	1	1958	1
10 mm (0.39 in): Days with 10 mm or more rain	14	46	1958	33
25 mm (0.98 in): Days with 25 mm or more rain	14	15	1958	5
50 mm (1.97 in): Days with 50 mm or more rain	10	7	1958	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1944.

Download the Data

Data for Zacatepec (Obs) 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).

Zacatepec (Obs) Threshold Days by Year (MXN00017042)

Key Facts for Zacatepec (Obs) Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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