Chichihualco Threshold Days by Year (MXN00012031)

13 fixed thresholds counted per year at Chichihualco (MXN00012031): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Chichihualco Thresholds

Chichihualco: days with a maximum temperature at or above 30 C (86 F) in 37 years, most in 1962 with 362.
Chichihualco: days with a maximum temperature at or above 35 C (95 F) in 37 years, most in 1992 with 324.
Chichihualco: days with a maximum temperature at or above 90 F (32.2 C) in 37 years, most in 1966 with 339.
Chichihualco: days with 10 mm (0.39 in) or more of precipitation in 36 years, most in 1964 with 41.
13 fixed thresholds have at least one qualifying day at Chichihualco.

Days at or above 30 C (86 F)

37 years with a qualifying day

Days per year at Chichihualco with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 362 in 1962.

Days at or above 30 C (86 F) per year at Chichihualco
Year	Days	Decade average
1961	361	334.9
1962	362	334.9
1963	360	334.9
1964	345	334.9
1965	333	334.9
1966	362	334.9
1967	355	334.9
1969	201	334.9
1970	195	188.8
1972	230	188.8
1973	167	188.8
1974	199	188.8
1975	95	188.8
1976	168	188.8
1977	209	188.8
1978	203	188.8
1979	233	188.8
1980	205	215.4
1981	187	215.4
1982	267	215.4
1983	257	215.4
1984	184	215.4
1985	173	215.4
1986	235	215.4
1990	200	228
1992	335	228
1994	178	228
1995	199	228
2003	204	281
2004	355	281
2005	341	281
2006	249	281
2008	309	281
2009	228	281
2010	155	157.7
2011	175	157.7
2012	143	157.7

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

First to last qualifying date each year at Chichihualco
Year	First date	Last date
1961	1961-01-01	1961-12-31
1962	1962-01-01	1962-12-31
1963	1963-01-01	1963-12-31
1964	1964-01-01	1964-12-31
1965	1965-01-01	1965-12-31
1966	1966-01-01	1966-12-31
1967	1967-01-01	1967-12-31
1969	1969-01-10	1969-12-27
1970	1970-01-02	1970-12-31
1972	1972-01-01	1972-12-26
1973	1973-01-03	1973-12-01
1974	1974-01-02	1974-11-30
1975	1975-02-01	1975-12-16
1976	1976-01-14	1976-12-15
1977	1977-01-01	1977-12-31
1978	1978-01-01	1978-12-30
1979	1979-01-01	1979-12-29
1980	1980-01-08	1980-12-27
1981	1981-01-08	1981-12-31
1982	1982-01-01	1982-12-29
1983	1983-01-08	1983-12-30
1984	1984-01-05	1984-12-31
1985	1985-01-02	1985-12-31
1986	1986-01-01	1986-12-30
1990	1990-01-03	1990-11-27
1992	1992-01-01	1992-12-31
1994	1994-03-01	1994-11-20
1995	1995-01-01	1995-11-30
2003	2003-01-01	2003-12-29
2004	2004-01-01	2004-12-31
2005	2005-01-01	2005-12-16
2006	2006-01-03	2006-11-30
2008	2008-01-06	2008-12-31
2009	2009-01-01	2009-12-17
2010	2010-01-24	2010-11-25
2011	2011-01-28	2011-11-09
2012	2012-01-22	2012-11-20

Every Fixed Threshold

Fixed thresholds at Chichihualco
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	37	362	1962	143
35 C (95 F): Days	37	324	1992	22
40 C (104 F): Days	9	194	1992	53
45 C (113 F): Days	1	2	1992	2
90 F (32.2 C): Days	37	339	1966	79
100 F (37.8 C): Days	19	285	1992	1
110 F (43.3 C): Days	3	16	1992	16
20 C (68 F): Tropical nights (min	31	233	1963	6
25 C (77 F): Days with min	7	40	1963	21
10 mm (0.39 in): Days with 10 mm or more rain	36	41	1964	18
25 mm (0.98 in): Days with 25 mm or more rain	32	15	1967	1
50 mm (1.97 in): Days with 50 mm or more rain	12	4	1963	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1976	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.

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Data for Chichihualco 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).

Chichihualco Threshold Days by Year (MXN00012031)

Key Facts for Chichihualco Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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