Acatitan Threshold Days by Year (MXN00025001)

15 fixed thresholds counted per year at Acatitan (MXN00025001): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Acatitan Thresholds

Acatitan: days with 10 mm (0.39 in) or more of precipitation in 47 years, most in 1997 with 34.
Acatitan: days with 25 mm (0.98 in) or more of precipitation in 47 years, most in 1986 with 20.
Acatitan: days with a maximum temperature at or above 30 C (86 F) in 46 years, most in 2006 with 353.
Acatitan: days with a maximum temperature at or above 35 C (95 F) in 46 years, most in 1982 with 262.
15 fixed thresholds have at least one qualifying day at Acatitan.

Days at or above 30 C (86 F)

46 years with a qualifying day

Days per year at Acatitan with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 353 in 2006.

Days at or above 30 C (86 F) per year at Acatitan
Year	Days	Decade average
1961	329	328
1962	336	328
1963	331	328
1964	321	328
1965	331	328
1966	330	328
1967	331	328
1968	320	328
1969	323	328
1970	340	333.4
1971	342	333.4
1972	337	333.4
1973	323	333.4
1974	335	333.4
1975	332	333.4
1976	318	333.4
1977	338	333.4
1978	336	333.4
1979	333	333.4
1980	336	331.7
1981	328	331.7
1982	344	331.7
1983	317	331.7
1984	332	331.7
1985	325	331.7
1986	332	331.7
1987	324	331.7
1988	347	331.7
1991	324	325
1992	289	325
1997	324	325
1998	343	325
1999	345	325
2000	345	333
2001	328	333
2002	333	333
2003	346	333
2004	311	333
2005	341	333
2006	353	333
2007	306	333
2008	326	333
2009	341	333
2010	288	298.7
2011	297	298.7
2012	311	298.7

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

First to last qualifying date each year at Acatitan
Year	First date	Last date
1961	1961-01-03	1961-12-31
1962	1962-01-01	1962-12-31
1963	1963-01-01	1963-12-30
1964	1964-01-01	1964-12-31
1965	1965-01-01	1965-12-31
1966	1966-01-02	1966-12-28
1967	1967-01-02	1967-12-28
1968	1968-01-01	1968-12-28
1969	1969-01-02	1969-12-26
1970	1970-01-02	1970-12-31
1971	1971-01-01	1971-12-31
1972	1972-01-01	1972-12-27
1973	1973-01-07	1973-12-31
1974	1974-01-01	1974-12-23
1975	1975-01-04	1975-12-23
1976	1976-01-05	1976-11-30
1977	1977-01-03	1977-12-31
1978	1978-01-01	1978-12-28
1979	1979-01-01	1979-12-31
1980	1980-01-01	1980-12-31
1981	1981-01-01	1981-12-31
1982	1982-01-01	1982-12-23
1983	1983-01-05	1983-12-31
1984	1984-01-01	1984-12-31
1985	1985-01-03	1985-12-31
1986	1986-01-01	1986-12-31
1987	1987-01-01	1987-12-31
1988	1988-01-01	1988-12-28
1991	1991-01-01	1991-12-24
1992	1992-01-01	1992-12-31
1997	1997-01-01	1997-12-31
1998	1998-01-01	1998-12-31
1999	1999-01-01	1999-12-31
2000	2000-01-01	2000-12-31
2001	2001-01-01	2001-12-31
2002	2002-01-01	2002-12-31
2003	2003-01-01	2003-12-31
2004	2004-01-01	2004-12-31
2005	2005-01-01	2005-12-31
2006	2006-01-01	2006-12-29
2007	2007-01-02	2007-11-29
2008	2008-01-01	2008-11-30
2009	2009-01-01	2009-12-31
2010	2010-01-01	2010-12-27
2011	2011-01-02	2011-12-31
2012	2012-01-01	2012-12-28

Every Fixed Threshold

Fixed thresholds at Acatitan
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	46	353	2006	311
35 C (95 F): Days	46	262	1982	121
40 C (104 F): Days	44	56	1987	3
45 C (113 F): Days	2	1	1991	1
90 F (32.2 C): Days	46	315	2006	250
100 F (37.8 C): Days	46	118	1982	20
110 F (43.3 C): Days	3	1	1969	1
0 C (32 F): Frost days (min	4	3	2008	1
20 C (68 F): Tropical nights (min	46	159	1981	140
25 C (77 F): Days with min	46	76	2010	8
10 mm (0.39 in): Days with 10 mm or more rain	47	34	1997	23
25 mm (0.98 in): Days with 25 mm or more rain	47	20	1986	9
50 mm (1.97 in): Days with 50 mm or more rain	44	7	1972	3
100 mm (3.94 in): Days with 100 mm or more rain	12	2	1972	1
200 mm (7.87 in): Days with 200 mm or more rain	3	1	1972	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1961.

Download the Data

Data for Acatitan 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).

Acatitan Threshold Days by Year (MXN00025001)

Key Facts for Acatitan Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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