El Grullo Threshold Days by Year (MXN00014050)

11 fixed thresholds counted per year at El Grullo (MXN00014050): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for El Grullo Thresholds

El Grullo: days with 10 mm (0.39 in) or more of precipitation in 43 years, most in 1958 with 42.
El Grullo: days with 25 mm (0.98 in) or more of precipitation in 43 years, most in 1959 with 13.
El Grullo: days with a maximum temperature at or above 30 C (86 F) in 35 years, most in 1957 with 331.
El Grullo: days with a maximum temperature at or above 35 C (95 F) in 35 years, most in 1941 with 166.
11 fixed thresholds have at least one qualifying day at El Grullo.

Days at or above 30 C (86 F)

35 years with a qualifying day

Days per year at El Grullo with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 331 in 1957.

Days at or above 30 C (86 F) per year at El Grullo
Year	Days	Decade average
1941	309	309
1951	330	298.8
1952	326	298.8
1953	279	298.8
1954	305	298.8
1955	281	298.8
1956	319	298.8
1957	331	298.8
1958	246	298.8
1959	272	298.8
1960	285	281.6
1961	300	281.6
1962	299	281.6
1963	260	281.6
1964	265	281.6
1965	297	281.6
1966	287	281.6
1967	280	281.6
1968	264	281.6
1969	279	281.6
1970	293	292.9
1971	268	292.9
1972	287	292.9
1973	286	292.9
1974	324	292.9
1975	292	292.9
1976	277	292.9
1977	306	292.9
1978	303	292.9
1980	321	290.5
1981	274	290.5
1982	320	290.5
1983	270	290.5
1984	270	290.5
1985	288	290.5

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

First to last qualifying date each year at El Grullo
Year	First date	Last date
1941	1941-01-18	1941-12-31
1951	1951-01-04	1951-12-31
1952	1952-01-01	1952-12-22
1953	1953-01-02	1953-12-31
1954	1954-01-01	1954-12-18
1955	1955-01-01	1955-12-29
1956	1956-01-01	1956-12-31
1957	1957-01-01	1957-12-28
1958	1958-01-13	1958-12-22
1959	1959-01-08	1959-12-21
1960	1960-01-02	1960-12-29
1961	1961-01-04	1961-12-31
1962	1962-01-01	1962-12-31
1963	1963-01-01	1963-12-29
1964	1964-01-19	1964-12-31
1965	1965-01-02	1965-12-31
1966	1966-01-01	1966-12-29
1967	1967-01-03	1967-12-08
1968	1968-01-02	1968-12-18
1969	1969-01-02	1969-12-31
1970	1970-01-02	1970-12-28
1971	1971-01-01	1971-12-20
1972	1972-01-07	1972-12-27
1973	1973-01-08	1973-12-30
1974	1974-01-01	1974-12-25
1975	1975-01-04	1975-12-23
1976	1976-01-03	1976-12-27
1977	1977-01-07	1977-12-31
1978	1978-01-01	1978-12-31
1980	1980-01-01	1980-12-31
1981	1981-01-01	1981-12-27
1982	1982-01-01	1982-12-20
1983	1983-01-06	1983-12-26
1984	1984-01-07	1984-12-29
1985	1985-01-01	1985-12-31

Every Fixed Threshold

Fixed thresholds at El Grullo
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	35	331	1957	288
35 C (95 F): Days	35	166	1941	35
40 C (104 F): Days	4	12	1941	1
90 F (32.2 C): Days	35	240	1982	123
100 F (37.8 C): Days	33	44	1941	1
0 C (32 F): Frost days (min	1	2	1951	2
20 C (68 F): Tropical nights (min	35	122	1977	52
25 C (77 F): Days with min	2	1	1978	1
10 mm (0.39 in): Days with 10 mm or more rain	43	42	1958	21
25 mm (0.98 in): Days with 25 mm or more rain	43	13	1959	8
50 mm (1.97 in): Days with 50 mm or more rain	34	3	1959	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1941.

Download the Data

Data for El Grullo 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).

El Grullo Threshold Days by Year (MXN00014050)

Key Facts for El Grullo Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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