Pericos Threshold Days by Year (MXN00011052)

9 fixed thresholds counted per year at Pericos (MXN00011052): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Pericos Thresholds

Pericos: days with a maximum temperature at or above 30 C (86 F) in 73 years, most in 1938 with 213.
Pericos: days with 10 mm (0.39 in) or more of precipitation in 73 years, most in 1958 with 39.
Pericos: days with 25 mm (0.98 in) or more of precipitation in 72 years, most in 1973 with 16.
Pericos: days with a maximum temperature at or above 90 F (32.2 C) in 66 years, most in 1938 with 103.
9 fixed thresholds have at least one qualifying day at Pericos.

Days at or above 30 C (86 F)

73 years with a qualifying day

Days per year at Pericos with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 213 in 1938.

Days at or above 30 C (86 F) per year at Pericos
Year	Days	Decade average
1938	213	213
1940	101	66.9
1941	49	66.9
1942	77	66.9
1943	53	66.9
1944	62	66.9
1945	79	66.9
1946	68	66.9
1947	61	66.9
1948	53	66.9
1949	66	66.9
1951	68	45.8
1952	36	45.8
1953	54	45.8
1954	38	45.8
1955	61	45.8
1956	32	45.8
1957	62	45.8
1958	45	45.8
1959	16	45.8
1960	48	36.7
1961	29	36.7
1962	48	36.7
1963	39	36.7
1964	41	36.7
1965	43	36.7
1966	29	36.7
1967	20	36.7
1968	25	36.7
1969	45	36.7
1970	63	50
1971	38	50
1972	62	50
1973	47	50
1974	52	50
1975	50	50
1976	32	50
1977	45	50
1978	39	50
1979	72	50
1980	84	44.1
1981	55	44.1
1982	78	44.1
1983	59	44.1
1984	14	44.1
1985	12	44.1
1986	11	44.1
1987	17	44.1
1988	58	44.1
1989	53	44.1
1990	56	61.5
1991	65	61.5
1992	28	61.5
1993	29	61.5
1994	49	61.5
1995	65	61.5
1996	78	61.5
1997	65	61.5
1998	102	61.5
1999	78	61.5
2000	116	93.3
2001	88	93.3
2002	102	93.3
2003	91	93.3
2004	78	93.3
2005	107	93.3
2006	104	93.3
2007	77	93.3
2008	66	93.3
2009	104	93.3
2010	73	83.7
2011	102	83.7
2012	76	83.7

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

First to last qualifying date each year at Pericos
Year	First date	Last date
1938	1938-01-18	1938-12-01
1940	1940-02-14	1940-10-06
1941	1941-02-20	1941-06-14
1942	1942-03-15	1942-10-29
1943	1943-02-24	1943-07-25
1944	1944-03-23	1944-07-13
1945	1945-03-05	1945-07-16
1946	1946-03-16	1946-09-17
1947	1947-03-02	1947-08-01
1948	1948-03-19	1948-09-07
1949	1949-03-09	1949-10-21
1951	1951-02-20	1951-10-04
1952	1952-03-01	1952-08-14
1953	1953-03-04	1953-06-25
1954	1954-03-21	1954-06-09
1955	1955-02-28	1955-07-13
1956	1956-02-19	1956-06-08
1957	1957-04-05	1957-07-31
1958	1958-03-28	1958-06-01
1959	1959-04-06	1959-06-03
1960	1960-03-09	1960-07-31
1961	1961-04-13	1961-06-09
1962	1962-03-29	1962-07-15
1963	1963-03-25	1963-06-08
1964	1964-04-06	1964-06-09
1965	1965-03-11	1965-06-25
1966	1966-04-13	1966-09-30
1967	1967-04-22	1967-06-08
1968	1968-05-06	1968-07-09
1969	1969-04-05	1969-11-24
1970	1970-03-24	1970-07-13
1971	1971-03-29	1971-06-10
1972	1972-04-03	1972-07-24
1973	1973-03-26	1973-06-28
1974	1974-03-22	1974-10-31
1975	1975-03-21	1975-06-17
1976	1976-03-12	1976-08-16
1977	1977-03-15	1977-10-11
1978	1978-04-01	1978-07-21
1979	1979-04-08	1979-10-22
1980	1980-03-08	1980-10-18
1981	1981-03-30	1981-08-16
1982	1982-03-11	1982-06-25
1983	1983-03-25	1983-06-30
1984	1984-04-06	1984-05-23
1985	1985-05-10	1985-06-02
1986	1986-04-13	1986-05-18
1987	1987-05-25	1987-09-13
1988	1988-03-25	1988-07-13
1989	1989-05-05	1989-10-23
1990	1990-03-14	1990-12-10
1991	1991-03-09	1991-06-29
1992	1992-04-22	1992-07-14
1993	1993-04-17	1993-06-26
1994	1994-03-26	1994-07-29
1995	1995-03-27	1995-08-04
1996	1996-04-20	1996-08-11
1997	1997-03-03	1997-10-06
1998	1998-02-23	1998-07-30
1999	1999-03-25	1999-09-27
2000	2000-02-14	2000-10-30
2001	2001-02-19	2001-08-22
2002	2002-03-09	2002-10-27
2003	2003-03-03	2003-08-12
2004	2004-03-03	2004-10-23
2005	2005-02-09	2005-11-13
2006	2006-02-16	2006-10-27
2007	2007-02-22	2007-07-17
2008	2008-02-24	2008-06-28
2009	2009-02-26	2009-10-06
2010	2010-03-28	2010-09-02
2011	2011-03-03	2011-11-17
2012	2012-03-09	2012-10-25

Every Fixed Threshold

Fixed thresholds at Pericos
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	73	213	1938	76
35 C (95 F): Days	32	33	1938	5
90 F (32.2 C): Days	66	103	1938	32
100 F (37.8 C): Days	3	3	1938	1
0 C (32 F): Frost days (min	56	32	1953	4
10 mm (0.39 in): Days with 10 mm or more rain	73	39	1958	16
25 mm (0.98 in): Days with 25 mm or more rain	72	16	1973	6
50 mm (1.97 in): Days with 50 mm or more rain	30	5	2010	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1972	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1938.

Download the Data

Data for Pericos 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).

Pericos Threshold Days by Year (MXN00011052)

Key Facts for Pericos Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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