Chaparaco Threshold Days by Year (MXN00016031)

9 fixed thresholds counted per year at Chaparaco (MXN00016031): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Chaparaco Thresholds

Chaparaco: days with 10 mm (0.39 in) or more of precipitation in 56 years, most in 1967 with 39.
Chaparaco: days with a maximum temperature at or above 30 C (86 F) in 55 years, most in 1972 with 293.
Chaparaco: days with a maximum temperature at or above 90 F (32.2 C) in 55 years, most in 1972 with 116.
Chaparaco: days with 25 mm (0.98 in) or more of precipitation in 55 years, most in 1980 with 14.
9 fixed thresholds have at least one qualifying day at Chaparaco.

Days at or above 30 C (86 F)

55 years with a qualifying day

Days per year at Chaparaco with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 293 in 1972.

Days at or above 30 C (86 F) per year at Chaparaco
Year	Days	Decade average
1949	93	93
1950	84	86.6
1951	101	86.6
1952	89	86.6
1953	98	86.6
1954	90	86.6
1955	101	86.6
1956	75	86.6
1957	93	86.6
1958	77	86.6
1959	58	86.6
1960	97	84.2
1961	70	84.2
1962	90	84.2
1963	91	84.2
1964	83	84.2
1965	86	84.2
1966	66	84.2
1967	76	84.2
1968	83	84.2
1969	100	84.2
1970	125	146.3
1971	263	146.3
1972	293	146.3
1973	242	146.3
1974	103	146.3
1975	84	146.3
1976	81	146.3
1977	76	146.3
1978	83	146.3
1979	113	146.3
1980	85	104.5
1981	88	104.5
1982	127	104.5
1983	102	104.5
1984	84	104.5
1985	96	104.5
1986	96	104.5
1987	115	104.5
1988	112	104.5
1989	140	104.5
1990	124	99.8
1991	127	99.8
1992	98	99.8
1993	129	99.8
1994	106	99.8
1995	106	99.8
1996	93	99.8
1997	46	99.8
1998	96	99.8
1999	73	99.8
2000	61	57.5
2001	56	57.5
2002	64	57.5
2004	49	57.5

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

First to last qualifying date each year at Chaparaco
Year	First date	Last date
1949	1949-03-05	1949-08-26
1950	1950-02-26	1950-11-15
1951	1951-02-19	1951-11-16
1952	1952-01-03	1952-11-02
1953	1953-02-27	1953-06-26
1954	1954-02-12	1954-10-31
1955	1955-02-19	1955-07-13
1956	1956-02-20	1956-10-03
1957	1957-02-21	1957-11-03
1958	1958-03-15	1958-06-23
1959	1959-03-10	1959-07-30
1960	1960-02-29	1960-10-14
1961	1961-03-07	1961-11-16
1962	1962-02-10	1962-07-12
1963	1963-02-27	1963-06-18
1964	1964-02-28	1964-08-12
1965	1965-03-15	1965-09-30
1966	1966-03-07	1966-10-14
1967	1967-03-10	1967-08-07
1968	1968-03-16	1968-10-04
1969	1969-02-24	1969-06-26
1970	1970-01-31	1970-11-22
1971	1971-01-22	1971-12-31
1972	1972-01-01	1972-12-31
1973	1973-01-04	1973-12-30
1974	1974-01-02	1974-08-02
1975	1975-03-02	1975-06-16
1976	1976-02-10	1976-06-30
1977	1977-03-06	1977-10-11
1978	1978-03-12	1978-11-16
1979	1979-03-11	1979-10-24
1980	1980-02-15	1980-07-06
1981	1981-02-27	1981-11-09
1982	1982-02-10	1982-11-12
1983	1983-03-02	1983-10-11
1984	1984-03-05	1984-11-10
1985	1985-02-24	1985-11-19
1986	1986-01-29	1986-11-20
1987	1987-02-16	1987-10-27
1988	1988-02-02	1988-11-16
1989	1989-01-14	1989-11-22
1990	1990-02-28	1990-12-22
1991	1991-02-12	1991-10-25
1992	1992-02-29	1992-07-09
1993	1993-01-16	1993-10-19
1994	1994-02-05	1994-10-25
1995	1995-02-14	1995-11-13
1996	1996-02-16	1996-11-06
1997	1997-03-02	1997-10-06
1998	1998-02-23	1998-07-09
1999	1999-03-11	1999-06-17
2000	2000-02-15	2000-05-26
2001	2001-03-14	2001-06-11
2002	2002-03-16	2002-06-19
2004	2004-03-06	2004-12-27

Every Fixed Threshold

Fixed thresholds at Chaparaco
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	55	293	1972	49
35 C (95 F): Days	44	60	1971	3
90 F (32.2 C): Days	55	116	1972	6
100 F (37.8 C): Days	5	12	1971	1
0 C (32 F): Frost days (min	12	11	1973	1
20 C (68 F): Tropical nights (min	8	3	1954	1
10 mm (0.39 in): Days with 10 mm or more rain	56	39	1967	31
25 mm (0.98 in): Days with 25 mm or more rain	55	14	1980	4
50 mm (1.97 in): Days with 50 mm or more rain	19	2	1954	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1949.

Download the Data

Data for Chaparaco 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).

Chaparaco Threshold Days by Year (MXN00016031)

Key Facts for Chaparaco Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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