El Sitio Threshold Days by Year (MXN00008057)

15 fixed thresholds counted per year at El Sitio (MXN00008057): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for El Sitio Thresholds

El Sitio: days with a maximum temperature at or above 30 C (86 F) in 30 years, most in 1959 with 247.
El Sitio: days with a maximum temperature at or above 35 C (95 F) in 30 years, most in 1959 with 116.
El Sitio: days with a maximum temperature at or above 90 F (32.2 C) in 30 years, most in 1959 with 176.
El Sitio: days with a maximum temperature at or above 100 F (37.8 C) in 30 years, most in 1978 with 50.
15 fixed thresholds have at least one qualifying day at El Sitio.

Days at or above 30 C (86 F)

30 years with a qualifying day

Days per year at El Sitio with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 247 in 1959.

Days at or above 30 C (86 F) per year at El Sitio
Year	Days	Decade average
1956	176	183.3
1957	167	183.3
1958	143	183.3
1959	247	183.3
1960	152	138.8
1961	144	138.8
1962	165	138.8
1963	137	138.8
1964	131	138.8
1965	141	138.8
1966	116	138.8
1967	146	138.8
1968	98	138.8
1969	158	138.8
1970	129	130.4
1971	127	130.4
1972	147	130.4
1973	112	130.4
1974	121	130.4
1975	133	130.4
1976	115	130.4
1977	147	130.4
1978	128	130.4
1979	145	130.4
1980	132	137.8
1981	121	137.8
1982	144	137.8
1984	147	137.8
1985	142	137.8
1986	141	137.8

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

First to last qualifying date each year at El Sitio
Year	First date	Last date
1956	1956-02-22	1956-10-31
1957	1957-01-12	1957-11-19
1958	1958-04-05	1958-10-09
1959	1959-01-18	1959-12-01
1960	1960-03-04	1960-11-07
1961	1961-02-12	1961-11-26
1962	1962-04-08	1962-10-22
1963	1963-02-01	1963-10-11
1964	1964-04-09	1964-09-20
1965	1965-04-01	1965-11-24
1966	1966-03-19	1966-10-09
1967	1967-03-11	1967-10-26
1968	1968-04-15	1968-11-02
1969	1969-03-19	1969-10-06
1970	1970-04-13	1970-09-24
1971	1971-03-23	1971-10-03
1972	1972-03-06	1972-10-19
1973	1973-04-27	1973-10-28
1974	1974-03-03	1974-09-12
1975	1975-03-31	1975-11-10
1976	1976-04-12	1976-10-12
1977	1977-03-16	1977-10-20
1978	1978-04-24	1978-09-19
1979	1979-04-12	1979-10-28
1980	1980-04-09	1980-09-23
1981	1981-04-10	1981-10-03
1982	1982-03-18	1982-11-10
1984	1984-04-10	1984-10-21
1985	1985-03-09	1985-10-07
1986	1986-02-20	1986-11-21

Every Fixed Threshold

Fixed thresholds at El Sitio
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	30	247	1959	141
35 C (95 F): Days	30	116	1959	35
40 C (104 F): Days	12	25	1959	1
45 C (113 F): Days	1	1	1959	1
90 F (32.2 C): Days	30	176	1959	76
100 F (37.8 C): Days	30	50	1978	1
110 F (43.3 C): Days	1	4	1959	4
0 C (32 F): Ice days (max	2	1	1956	1
0 C (32 F): Frost days (min	30	71	1966	49
-10 C (14 F): Days with min	3	4	1962	3
20 C (68 F): Tropical nights (min	26	92	1959	27
25 C (77 F): Days with min	6	6	1959	1
10 mm (0.39 in): Days with 10 mm or more rain	30	26	1959	25
25 mm (0.98 in): Days with 25 mm or more rain	28	8	1966	4
50 mm (1.97 in): Days with 50 mm or more rain	6	2	1966	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1956.

Download the Data

Data for El Sitio 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 Sitio Threshold Days by Year (MXN00008057)

Key Facts for El Sitio Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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