Chilapa Threshold Days by Year (MXN00030042)

10 fixed thresholds counted per year at Chilapa (MXN00030042): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Chilapa Thresholds

Chilapa: days with 10 mm (0.39 in) or more of precipitation in 27 years, most in 1976 with 78.
Chilapa: days with 25 mm (0.98 in) or more of precipitation in 26 years, most in 1983 with 30.
Chilapa: days with a maximum temperature at or above 30 C (86 F) in 24 years, most in 1957 with 49.
Chilapa: days with 50 mm (1.97 in) or more of precipitation in 22 years, most in 1974 with 9.
10 fixed thresholds have at least one qualifying day at Chilapa.

Days at or above 30 C (86 F)

24 years with a qualifying day

Days per year at Chilapa with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 49 in 1957.

Days at or above 30 C (86 F) per year at Chilapa
Year	Days	Decade average
1957	49	49
1961	16	19.7
1962	20	19.7
1963	12	19.7
1964	24	19.7
1965	12	19.7
1966	27	19.7
1967	23	19.7
1968	24	19.7
1969	19	19.7
1970	13	13.3
1971	19	13.3
1972	5	13.3
1973	16	13.3
1974	6	13.3
1975	20	13.3
1976	8	13.3
1977	14	13.3
1978	11	13.3
1979	21	13.3
1980	18	15.5
1981	11	15.5
1982	14	15.5
1983	19	15.5

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

First to last qualifying date each year at Chilapa
Year	First date	Last date
1957	1957-03-02	1957-11-28
1961	1961-03-05	1961-12-16
1962	1962-03-08	1962-08-27
1963	1963-01-24	1963-06-19
1964	1964-01-18	1964-08-13
1965	1965-02-28	1965-12-17
1966	1966-02-09	1966-12-31
1967	1967-01-05	1967-12-17
1968	1968-02-21	1968-11-26
1969	1969-01-08	1969-12-24
1970	1970-03-10	1970-10-23
1971	1971-01-02	1971-05-05
1972	1972-03-27	1972-11-24
1973	1973-03-07	1973-11-25
1974	1974-02-20	1974-06-05
1975	1975-02-16	1975-11-08
1976	1976-02-20	1976-05-29
1977	1977-01-05	1977-12-03
1978	1978-03-01	1978-05-15
1979	1979-01-19	1979-12-22
1980	1980-01-10	1980-10-27
1981	1981-03-20	1981-12-27
1982	1982-01-01	1982-11-28
1983	1983-01-30	1983-11-02

Every Fixed Threshold

Fixed thresholds at Chilapa
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	24	49	1957	19
35 C (95 F): Days	14	5	1962	1
90 F (32.2 C): Days	20	15	1957	1
100 F (37.8 C): Days	1	1	1964	1
0 C (32 F): Frost days (min	14	38	1961	1
20 C (68 F): Tropical nights (min	1	2	1983	2
10 mm (0.39 in): Days with 10 mm or more rain	27	78	1976	67
25 mm (0.98 in): Days with 25 mm or more rain	26	30	1983	30
50 mm (1.97 in): Days with 50 mm or more rain	22	9	1974	5
100 mm (3.94 in): Days with 100 mm or more rain	2	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 1957.

Download the Data

Data for Chilapa 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).

Chilapa Threshold Days by Year (MXN00030042)

Key Facts for Chilapa Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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