Rayon Threshold Days by Year (MXN00024060)

16 fixed thresholds counted per year at Rayon (MXN00024060): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Rayon Thresholds

Rayon: days with a maximum temperature at or above 30 C (86 F) in 45 years, most in 1961 with 256.
Rayon: days with a maximum temperature at or above 35 C (95 F) in 45 years, most in 1965 with 93.
Rayon: days with a maximum temperature at or above 90 F (32.2 C) in 45 years, most in 1961 with 151.
Rayon: nights with a minimum temperature at or above 20 C (68 F) in 45 years, most in 1982 with 68.
16 fixed thresholds have at least one qualifying day at Rayon.

Days at or above 30 C (86 F)

45 years with a qualifying day

Days per year at Rayon with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 256 in 1961.

Days at or above 30 C (86 F) per year at Rayon
Year	Days	Decade average
1961	256	199.3
1962	224	199.3
1963	221	199.3
1964	210	199.3
1965	215	199.3
1966	148	199.3
1967	169	199.3
1968	160	199.3
1969	191	199.3
1970	142	164.8
1971	144	164.8
1972	146	164.8
1973	194	164.8
1974	157	164.8
1975	148	164.8
1976	141	164.8
1977	205	164.8
1978	180	164.8
1979	191	164.8
1980	187	169.6
1981	163	169.6
1982	221	169.6
1983	182	169.6
1984	126	169.6
1987	154	169.6
1988	147	169.6
1989	177	169.6
1990	125	148.4
1991	154	148.4
1992	92	148.4
1993	125	148.4
1996	192	148.4
1998	182	148.4
1999	169	148.4
2000	183	179.1
2001	165	179.1
2002	184	179.1
2003	185	179.1
2004	170	179.1
2005	159	179.1
2006	222	179.1
2007	157	179.1
2008	159	179.1
2009	207	179.1
2010	140	140

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

First to last qualifying date each year at Rayon
Year	First date	Last date
1961	1961-01-24	1961-12-31
1962	1962-01-04	1962-12-10
1963	1963-01-10	1963-12-26
1964	1964-01-02	1964-12-30
1965	1965-01-08	1965-12-25
1966	1966-01-02	1966-12-31
1967	1967-01-02	1967-12-31
1968	1968-02-21	1968-12-28
1969	1969-01-02	1969-12-25
1970	1970-01-11	1970-12-30
1971	1971-01-02	1971-12-20
1972	1972-01-09	1972-12-30
1973	1973-01-07	1973-12-31
1974	1974-01-06	1974-12-31
1975	1975-01-09	1975-12-24
1976	1976-01-01	1976-12-30
1977	1977-01-04	1977-12-30
1978	1978-01-02	1978-12-23
1979	1979-01-07	1979-12-27
1980	1980-01-07	1980-12-08
1981	1981-02-01	1981-12-29
1982	1982-01-02	1982-12-24
1983	1983-01-28	1983-12-28
1984	1984-01-09	1984-11-29
1987	1987-01-09	1987-12-25
1988	1988-01-12	1988-12-30
1989	1989-01-02	1989-12-31
1990	1990-01-01	1990-12-30
1991	1991-01-19	1991-12-02
1992	1992-02-14	1992-12-21
1993	1993-01-07	1993-12-22
1996	1996-01-05	1996-12-28
1998	1998-01-05	1998-12-07
1999	1999-01-08	1999-12-12
2000	2000-01-09	2000-12-14
2001	2001-01-07	2001-12-16
2002	2002-01-19	2002-12-19
2003	2003-01-22	2003-12-13
2004	2004-01-05	2004-12-23
2005	2005-01-10	2005-11-28
2006	2006-02-02	2006-12-12
2007	2007-02-13	2007-12-30
2008	2008-01-30	2008-12-28
2009	2009-01-05	2009-12-10
2010	2010-01-20	2010-12-31

Every Fixed Threshold

Fixed thresholds at Rayon
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	45	256	1961	140
35 C (95 F): Days	45	93	1965	35
40 C (104 F): Days	39	25	1998	1
45 C (113 F): Days	1	2	1998	2
90 F (32.2 C): Days	45	151	1961	57
100 F (37.8 C): Days	43	42	2008	10
110 F (43.3 C): Days	5	4	1998	2
0 C (32 F): Ice days (max	1	1	1989	1
0 C (32 F): Frost days (min	27	5	1967	1
20 C (68 F): Tropical nights (min	45	68	1982	37
25 C (77 F): Days with min	5	4	2008	4
10 mm (0.39 in): Days with 10 mm or more rain	45	36	1967	30
25 mm (0.98 in): Days with 25 mm or more rain	45	16	2008	12
50 mm (1.97 in): Days with 50 mm or more rain	37	5	1974	4
100 mm (3.94 in): Days with 100 mm or more rain	6	2	1969	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	1993	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1961.

Download the Data

Data for Rayon 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).

Rayon Threshold Days by Year (MXN00024060)

Key Facts for Rayon Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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