Atlatlahuacan Threshold Days by Year (MXN00017001)

10 fixed thresholds counted per year at Atlatlahuacan (MXN00017001): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Atlatlahuacan Thresholds

Atlatlahuacan: days with 10 mm (0.39 in) or more of precipitation in 82 years, most in 1958 with 57.
Atlatlahuacan: days with a maximum temperature at or above 30 C (86 F) in 81 years, most in 1954 with 294.
Atlatlahuacan: days with 25 mm (0.98 in) or more of precipitation in 81 years, most in 1968 with 18.
Atlatlahuacan: days with a maximum temperature at or above 90 F (32.2 C) in 60 years, most in 2004 with 93.
10 fixed thresholds have at least one qualifying day at Atlatlahuacan.

Days at or above 30 C (86 F)

81 years with a qualifying day

Days per year at Atlatlahuacan with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 294 in 1954.

Days at or above 30 C (86 F) per year at Atlatlahuacan
Year	Days	Decade average
1926	63	61.3
1927	65	61.3
1928	48	61.3
1929	69	61.3
1930	52	62.8
1931	50	62.8
1932	88	62.8
1933	84	62.8
1934	36	62.8
1935	64	62.8
1936	78	62.8
1937	58	62.8
1938	62	62.8
1939	56	62.8
1940	67	148.6
1941	88	148.6
1942	73	148.6
1943	133	148.6
1944	191	148.6
1945	145	148.6
1946	205	148.6
1947	187	148.6
1948	148	148.6
1949	249	148.6
1950	184	188.5
1951	216	188.5
1952	191	188.5
1953	233	188.5
1954	294	188.5
1955	200	188.5
1956	130	188.5
1957	177	188.5
1958	102	188.5
1959	158	188.5
1960	125	94.8
1961	97	94.8
1962	104	94.8
1963	77	94.8
1964	99	94.8
1965	88	94.8
1966	71	94.8
1967	111	94.8
1968	81	94.8
1970	96	109.8
1971	141	109.8
1972	157	109.8
1973	125	109.8
1974	85	109.8
1975	77	109.8
1976	77	109.8
1978	66	109.8
1979	164	109.8
1980	123	166.8
1981	126	166.8
1982	190	166.8
1983	152	166.8
1984	179	166.8
1987	207	166.8
1988	155	166.8
1989	202	166.8
1990	232	213.7
1991	178	213.7
1992	176	213.7
1993	220	213.7
1994	232	213.7
1995	234	213.7
1996	213	213.7
1997	233	213.7
1998	239	213.7
1999	180	213.7
2000	113	111.1
2001	111	111.1
2002	156	111.1
2003	128	111.1
2004	150	111.1
2005	107	111.1
2006	141	111.1
2007	52	111.1
2009	42	111.1
2010	47	52
2011	57	52

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

First to last qualifying date each year at Atlatlahuacan
Year	First date	Last date
1926	1926-02-25	1926-06-01
1927	1927-03-05	1927-05-30
1928	1928-02-17	1928-06-10
1929	1929-02-20	1929-06-16
1930	1930-03-07	1930-06-13
1931	1931-03-07	1931-06-13
1932	1932-02-04	1932-06-28
1933	1933-02-15	1933-06-13
1934	1934-02-16	1934-06-21
1935	1935-03-06	1935-06-01
1936	1936-02-02	1936-06-18
1937	1937-01-30	1937-05-18
1938	1938-03-05	1938-06-11
1939	1939-02-27	1939-07-06
1940	1940-02-24	1940-11-06
1941	1941-02-13	1941-06-27
1942	1942-03-02	1942-12-26
1943	1943-01-06	1943-12-31
1944	1944-01-04	1944-12-30
1945	1945-01-05	1945-12-30
1946	1946-01-31	1946-12-25
1947	1947-01-02	1947-12-27
1948	1948-01-02	1948-12-30
1949	1949-01-02	1949-12-30
1950	1950-01-01	1950-12-24
1951	1951-01-02	1951-12-30
1952	1952-01-08	1952-12-27
1953	1953-01-03	1953-12-31
1954	1954-01-01	1954-12-30
1955	1955-01-01	1955-12-21
1956	1956-01-01	1956-11-23
1957	1957-01-01	1957-12-29
1958	1958-01-10	1958-12-30
1959	1959-02-11	1959-12-29
1960	1960-03-03	1960-12-23
1961	1961-01-09	1961-11-24
1962	1962-02-14	1962-11-28
1963	1963-01-10	1963-11-29
1964	1964-01-22	1964-12-30
1965	1965-01-05	1965-11-29
1966	1966-02-16	1966-11-10
1967	1967-02-16	1967-09-19
1968	1968-02-29	1968-12-30
1970	1970-03-11	1970-11-01
1971	1971-03-13	1971-12-31
1972	1972-03-04	1972-11-15
1973	1973-02-07	1973-10-09
1974	1974-01-24	1974-08-21
1975	1975-02-05	1975-06-06
1976	1976-03-10	1976-09-20
1978	1978-01-04	1978-11-13
1979	1979-01-11	1979-12-13
1980	1980-01-03	1980-12-24
1981	1981-01-22	1981-12-31
1982	1982-01-25	1982-12-29
1983	1983-01-05	1983-12-16
1984	1984-01-02	1984-12-25
1987	1987-01-01	1987-12-27
1988	1988-01-03	1988-12-31
1989	1989-01-27	1989-12-31
1990	1990-01-01	1990-12-31
1991	1991-01-08	1991-12-27
1992	1992-01-01	1992-12-30
1993	1993-01-01	1993-12-31
1994	1994-01-01	1994-12-31
1995	1995-01-01	1995-12-31
1996	1996-01-01	1996-12-18
1997	1997-01-01	1997-12-31
1998	1998-01-02	1998-12-30
1999	1999-01-01	1999-12-31
2000	2000-01-01	2000-12-01
2001	2001-01-15	2001-11-30
2002	2002-02-27	2002-11-10
2003	2003-02-16	2003-08-22
2004	2004-01-01	2004-06-09
2005	2005-01-08	2005-12-31
2006	2006-01-08	2006-12-31
2007	2007-01-01	2007-11-30
2009	2009-02-19	2009-06-13
2010	2010-04-08	2010-06-10
2011	2011-03-27	2011-06-19

Every Fixed Threshold

Fixed thresholds at Atlatlahuacan
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	81	294	1954	57
35 C (95 F): Days	20	61	2004	61
90 F (32.2 C): Days	60	93	2004	2
100 F (37.8 C): Days	1	4	2004	4
0 C (32 F): Frost days (min	1	1	1926	1
20 C (68 F): Tropical nights (min	2	1	1945	1
10 mm (0.39 in): Days with 10 mm or more rain	82	57	1958	31
25 mm (0.98 in): Days with 25 mm or more rain	81	18	1968	16
50 mm (1.97 in): Days with 50 mm or more rain	55	8	1968	2
100 mm (3.94 in): Days with 100 mm or more rain	4	1	1967	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1926.

Download the Data

Data for Atlatlahuacan 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).

Atlatlahuacan Threshold Days by Year (MXN00017001)

Key Facts for Atlatlahuacan Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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