Ahuacatlan Threshold Days by Year (MXN00018002)

12 fixed thresholds counted per year at Ahuacatlan (MXN00018002): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ahuacatlan Thresholds

Ahuacatlan: days with a maximum temperature at or above 30 C (86 F) in 81 years, most in 1942 with 353.
Ahuacatlan: days with a maximum temperature at or above 35 C (95 F) in 81 years, most in 1942 with 246.
Ahuacatlan: days with a maximum temperature at or above 90 F (32.2 C) in 81 years, most in 1942 with 319.
Ahuacatlan: nights with a minimum temperature at or above 20 C (68 F) in 80 years, most in 1946 with 157.
12 fixed thresholds have at least one qualifying day at Ahuacatlan.

Days at or above 30 C (86 F)

81 years with a qualifying day

Days per year at Ahuacatlan with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 353 in 1942.

Days at or above 30 C (86 F) per year at Ahuacatlan
Year	Days	Decade average
1927	219	245.3
1928	256	245.3
1929	261	245.3
1930	247	264.2
1931	240	264.2
1932	253	264.2
1933	266	264.2
1934	276	264.2
1935	277	264.2
1936	262	264.2
1937	282	264.2
1938	271	264.2
1939	268	264.2
1940	293	313.4
1941	306	313.4
1942	353	313.4
1943	330	313.4
1944	308	313.4
1945	344	313.4
1946	304	313.4
1947	285	313.4
1948	304	313.4
1949	307	313.4
1950	332	295.3
1951	302	295.3
1952	310	295.3
1953	296	295.3
1954	307	295.3
1955	275	295.3
1956	301	295.3
1957	312	295.3
1958	246	295.3
1959	272	295.3
1960	275	268.8
1961	269	268.8
1962	265	268.8
1963	281	268.8
1964	286	268.8
1965	289	268.8
1966	265	268.8
1967	255	268.8
1968	249	268.8
1969	254	268.8
1970	267	292.6
1971	265	292.6
1972	284	292.6
1973	253	292.6
1974	316	292.6
1975	305	292.6
1976	295	292.6
1977	323	292.6
1978	303	292.6
1979	315	292.6
1980	227	248.5
1981	299	248.5
1982	290	248.5
1983	235	248.5
1984	221	248.5
1985	234	248.5
1986	241	248.5
1987	229	248.5
1988	257	248.5
1989	252	248.5
1991	231	249.7
1992	218	249.7
1993	268	249.7
1994	266	249.7
1996	281	249.7
1997	245	249.7
1999	239	249.7
2001	258	256.8
2002	259	256.8
2003	228	256.8
2004	238	256.8
2005	258	256.8
2006	265	256.8
2007	268	256.8
2008	263	256.8
2009	274	256.8
2010	224	256.5
2011	289	256.5

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

First to last qualifying date each year at Ahuacatlan
Year	First date	Last date
1927	1927-01-26	1927-11-25
1928	1928-01-24	1928-12-31
1929	1929-01-03	1929-12-30
1930	1930-01-05	1930-12-26
1931	1931-01-24	1931-12-28
1932	1932-01-14	1932-12-25
1933	1933-01-05	1933-12-31
1934	1934-01-01	1934-12-31
1935	1935-01-01	1935-12-18
1936	1936-01-04	1936-12-30
1937	1937-01-01	1937-12-31
1938	1938-01-01	1938-12-29
1939	1939-01-05	1939-12-17
1940	1940-01-09	1940-12-28
1941	1941-01-01	1941-12-31
1942	1942-01-01	1942-12-31
1943	1943-01-01	1943-12-30
1944	1944-01-02	1944-12-28
1945	1945-01-03	1945-12-31
1946	1946-01-01	1946-12-29
1947	1947-01-21	1947-12-23
1948	1948-01-08	1948-12-31
1949	1949-01-07	1949-12-31
1950	1950-01-01	1950-12-25
1951	1951-01-05	1951-12-30
1952	1952-01-02	1952-12-20
1953	1953-01-08	1953-12-26
1954	1954-01-03	1954-12-09
1955	1955-01-19	1955-12-29
1956	1956-01-02	1956-12-31
1957	1957-01-01	1957-12-29
1958	1958-01-26	1958-12-11
1959	1959-01-11	1959-12-25
1960	1960-01-03	1960-12-24
1961	1961-01-03	1961-12-28
1962	1962-01-01	1962-12-31
1963	1963-01-01	1963-12-30
1964	1964-01-21	1964-12-31
1965	1965-01-01	1965-12-31
1966	1966-01-01	1966-12-04
1967	1967-01-20	1967-12-05
1968	1968-01-03	1968-12-16
1969	1969-01-11	1969-12-26
1970	1970-01-24	1970-12-31
1971	1971-01-15	1971-12-30
1972	1972-01-07	1972-12-26
1973	1973-01-14	1973-12-16
1974	1974-01-04	1974-12-24
1975	1975-01-04	1975-12-23
1976	1976-01-04	1976-12-30
1977	1977-01-03	1977-12-29
1978	1978-01-01	1978-12-31
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	1982-12-21
1983	1983-01-08	1983-12-25
1984	1984-01-29	1984-12-22
1985	1985-02-11	1985-12-31
1986	1986-01-01	1986-12-17
1987	1987-01-26	1987-12-22
1988	1988-01-03	1988-12-25
1989	1989-01-02	1989-11-21
1991	1991-01-01	1991-12-10
1992	1992-02-22	1992-12-31
1993	1993-01-16	1993-12-29
1994	1994-01-01	1994-12-23
1996	1996-01-07	1996-12-25
1997	1997-01-01	1997-12-07
1999	1999-01-04	1999-12-09
2001	2001-01-04	2001-12-22
2002	2002-01-08	2002-12-31
2003	2003-01-14	2003-11-30
2004	2004-01-07	2004-12-06
2005	2005-01-10	2005-12-21
2006	2006-01-25	2006-12-07
2007	2007-01-16	2007-12-25
2008	2008-01-24	2008-12-30
2009	2009-01-08	2009-12-13
2010	2010-03-04	2010-12-31
2011	2011-01-11	2011-12-30

Every Fixed Threshold

Fixed thresholds at Ahuacatlan
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	81	353	1942	289
35 C (95 F): Days	81	246	1942	56
40 C (104 F): Days	22	36	1942	1
90 F (32.2 C): Days	81	319	1942	140
100 F (37.8 C): Days	58	105	1942	4
0 C (32 F): Frost days (min	2	2	1988	2
20 C (68 F): Tropical nights (min	80	157	1946	83
25 C (77 F): Days with min	12	8	1980	1
10 mm (0.39 in): Days with 10 mm or more rain	76	51	2010	29
25 mm (0.98 in): Days with 25 mm or more rain	76	22	2010	8
50 mm (1.97 in): Days with 50 mm or more rain	51	6	2004	1
100 mm (3.94 in): Days with 100 mm or more rain	2	1	1955	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1927.

Download the Data

Data for Ahuacatlan 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).

Ahuacatlan Threshold Days by Year (MXN00018002)

Key Facts for Ahuacatlan Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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