Chanchichimila Threshold Days by Year (MXN00031008)

11 fixed thresholds counted per year at Chanchichimila (MXN00031008): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Chanchichimila Thresholds

Chanchichimila: nights with a minimum temperature at or above 20 C (68 F) in 51 years, most in 1997 with 253.
Chanchichimila: days with 10 mm (0.39 in) or more of precipitation in 51 years, most in 1999 with 55.
Chanchichimila: days with 25 mm (0.98 in) or more of precipitation in 51 years, most in 2002 with 21.
Chanchichimila: days with a maximum temperature at or above 30 C (86 F) in 50 years, most in 1971 with 349.
11 fixed thresholds have at least one qualifying day at Chanchichimila.

Days at or above 30 C (86 F)

50 years with a qualifying day

Days per year at Chanchichimila with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 349 in 1971.

Days at or above 30 C (86 F) per year at Chanchichimila
Year	Days	Decade average
1953	298	283.9
1954	281	283.9
1955	275	283.9
1956	299	283.9
1957	310	283.9
1958	269	283.9
1959	255	283.9
1960	276	283.7
1961	264	283.7
1962	265	283.7
1963	271	283.7
1964	266	283.7
1965	318	283.7
1966	290	283.7
1967	309	283.7
1968	294	283.7
1970	322	315.6
1971	349	315.6
1972	308	315.6
1973	322	315.6
1974	290	315.6
1975	324	315.6
1976	310	315.6
1977	319	315.6
1979	296	315.6
1980	310	308.3
1981	281	308.3
1983	299	308.3
1984	290	308.3
1985	335	308.3
1986	324	308.3
1987	325	308.3
1988	291	308.3
1989	320	308.3
1990	302	294.6
1992	308	294.6
1993	314	294.6
1994	319	294.6
1995	317	294.6
1996	287	294.6
1997	292	294.6
1998	259	294.6
1999	253	294.6
2000	224	247.9
2001	268	247.9
2002	245	247.9
2003	270	247.9
2004	295	247.9
2006	236	247.9
2007	197	247.9

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

First to last qualifying date each year at Chanchichimila
Year	First date	Last date
1953	1953-01-07	1953-12-30
1954	1954-01-01	1954-12-31
1955	1955-01-01	1955-12-08
1956	1956-01-01	1956-12-27
1957	1957-01-04	1957-12-28
1958	1958-01-06	1958-12-31
1959	1959-01-02	1959-12-28
1960	1960-01-01	1960-12-11
1961	1961-01-01	1961-12-23
1962	1962-01-05	1962-12-31
1963	1963-01-07	1963-12-14
1964	1964-01-06	1964-12-30
1965	1965-01-01	1965-12-31
1966	1966-01-01	1966-12-31
1967	1967-01-01	1967-12-31
1968	1968-01-01	1968-12-31
1970	1970-01-01	1970-12-30
1971	1971-01-02	1971-12-31
1972	1972-01-01	1972-11-30
1973	1973-01-01	1973-12-31
1974	1974-01-01	1974-12-31
1975	1975-01-01	1975-12-31
1976	1976-01-01	1976-12-31
1977	1977-01-01	1977-12-31
1979	1979-01-01	1979-12-27
1980	1980-01-01	1980-12-09
1981	1981-01-03	1981-12-31
1983	1983-01-01	1983-12-29
1984	1984-01-01	1984-12-31
1985	1985-01-01	1985-12-31
1986	1986-01-01	1986-12-31
1987	1987-01-08	1987-12-31
1988	1988-01-01	1988-12-31
1989	1989-01-01	1989-12-31
1990	1990-01-01	1990-12-30
1992	1992-01-08	1992-12-31
1993	1993-01-01	1993-12-29
1994	1994-01-03	1994-12-30
1995	1995-01-01	1995-12-31
1996	1996-01-01	1996-12-31
1997	1997-01-01	1997-12-26
1998	1998-01-07	1998-12-27
1999	1999-01-09	1999-10-29
2000	2000-01-31	2000-12-16
2001	2001-01-09	2001-12-23
2002	2002-01-24	2002-12-27
2003	2003-01-02	2003-12-16
2004	2004-01-01	2004-12-25
2006	2006-01-01	2006-11-10
2007	2007-02-02	2007-10-31

Every Fixed Threshold

Fixed thresholds at Chanchichimila
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	50	349	1971	197
35 C (95 F): Days	50	157	1975	18
40 C (104 F): Days	14	5	1999	1
90 F (32.2 C): Days	50	244	1971	99
100 F (37.8 C): Days	43	35	2001	7
20 C (68 F): Tropical nights (min	51	253	1997	199
25 C (77 F): Days with min	24	13	1958	3
10 mm (0.39 in): Days with 10 mm or more rain	51	55	1999	9
25 mm (0.98 in): Days with 25 mm or more rain	51	21	2002	5
50 mm (1.97 in): Days with 50 mm or more rain	48	9	1993	1
100 mm (3.94 in): Days with 100 mm or more rain	13	2	1980	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1953.

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Data for Chanchichimila 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).

Chanchichimila Threshold Days by Year (MXN00031008)

Key Facts for Chanchichimila Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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