Grijalva Threshold Days by Year (MXN00007069)

13 fixed thresholds counted per year at Grijalva (MXN00007069): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Grijalva Thresholds

Grijalva: days with a maximum temperature at or above 30 C (86 F) in 26 years, most in 1971 with 352.
Grijalva: days with a maximum temperature at or above 35 C (95 F) in 26 years, most in 1977 with 217.
Grijalva: days with a maximum temperature at or above 40 C (104 F) in 26 years, most in 1998 with 57.
Grijalva: days with a maximum temperature at or above 90 F (32.2 C) in 26 years, most in 1972 with 312.
13 fixed thresholds have at least one qualifying day at Grijalva.

Days at or above 30 C (86 F)

26 years with a qualifying day

Days per year at Grijalva with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 352 in 1971.

Days at or above 30 C (86 F) per year at Grijalva
Year	Days	Decade average
1965	320	320.4
1966	305	320.4
1967	326	320.4
1968	327	320.4
1969	324	320.4
1970	325	327.4
1971	352	327.4
1972	346	327.4
1973	318	327.4
1974	323	327.4
1975	341	327.4
1976	303	327.4
1977	326	327.4
1978	333	327.4
1979	307	327.4
1980	319	324.3
1981	334	324.3
1982	341	324.3
1983	328	324.3
1984	296	324.3
1985	334	324.3
1986	327	324.3
1987	315	324.3
1997	322	318.3
1998	331	318.3
1999	302	318.3

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

First to last qualifying date each year at Grijalva
Year	First date	Last date
1965	1965-01-01	1965-12-31
1966	1966-01-01	1966-12-31
1967	1967-01-01	1967-12-31
1968	1968-01-01	1968-12-31
1969	1969-01-01	1969-12-30
1970	1970-01-01	1970-12-31
1971	1971-01-01	1971-12-31
1972	1972-01-01	1972-12-31
1973	1973-01-01	1973-12-31
1974	1974-01-01	1974-12-31
1975	1975-01-01	1975-12-31
1976	1976-01-01	1976-12-30
1977	1977-01-02	1977-12-31
1978	1978-01-01	1978-12-31
1979	1979-01-01	1979-12-28
1980	1980-01-01	1980-12-23
1981	1981-01-06	1981-12-31
1982	1982-01-01	1982-12-31
1983	1983-01-01	1983-12-28
1984	1984-01-06	1984-12-31
1985	1985-01-01	1985-12-31
1986	1986-01-01	1986-12-30
1987	1987-01-03	1987-12-27
1997	1997-01-01	1997-12-28
1998	1998-01-05	1998-12-31
1999	1999-01-01	1999-12-31

Every Fixed Threshold

Fixed thresholds at Grijalva
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	26	352	1971	302
35 C (95 F): Days	26	217	1977	134
40 C (104 F): Days	26	57	1998	27
45 C (113 F): Days	1	1	1973	1
90 F (32.2 C): Days	26	312	1972	222
100 F (37.8 C): Days	26	98	1980	55
110 F (43.3 C): Days	16	13	1973	4
20 C (68 F): Tropical nights (min	26	289	1972	225
25 C (77 F): Days with min	24	20	1983	1
10 mm (0.39 in): Days with 10 mm or more rain	26	39	1973	36
25 mm (0.98 in): Days with 25 mm or more rain	26	16	1981	11
50 mm (1.97 in): Days with 50 mm or more rain	21	5	1979	3
100 mm (3.94 in): Days with 100 mm or more rain	2	2	1973	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1965.

Download the Data

Data for Grijalva 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).

Grijalva Threshold Days by Year (MXN00007069)

Key Facts for Grijalva Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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