Mexican Hat Threshold Days by Year (USC00425582)

16 fixed thresholds counted per year at Mexican Hat (USC00425582): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mexican Hat Thresholds

Mexican Hat: days with a maximum temperature at or above 30 C (86 F) in 66 years, most in 2001 with 145.
Mexican Hat: days with a maximum temperature at or above 35 C (95 F) in 66 years, most in 2012 with 90.
Mexican Hat: days with a maximum temperature at or above 90 F (32.2 C) in 66 years, most in 2001 with 128.
Mexican Hat: days with a maximum temperature at or above 100 F (37.8 C) in 66 years, most in 2002 with 54.
16 fixed thresholds have at least one qualifying day at Mexican Hat.

Days at or above 30 C (86 F)

66 years with a qualifying day

Days per year at Mexican Hat with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 145 in 2001.

Days at or above 30 C (86 F) per year at Mexican Hat
Year	Days	Decade average
1946	119	116.7
1947	114	116.7
1949	117	116.7
1952	116	125
1953	130	125
1954	136	125
1955	116	125
1956	138	125
1957	116	125
1958	133	125
1959	115	125
1960	131	118
1961	111	118
1963	135	118
1965	108	118
1966	131	118
1967	108	118
1968	102	118
1970	112	110.3
1971	98	110.3
1972	108	110.3
1973	110	110.3
1974	122	110.3
1975	106	110.3
1976	103	110.3
1977	106	110.3
1978	116	110.3
1979	122	110.3
1980	121	116.4
1981	110	116.4
1982	107	116.4
1983	115	116.4
1984	128	116.4
1985	107	116.4
1986	105	116.4
1987	128	116.4
1988	114	116.4
1989	129	116.4
1990	112	119.1
1991	127	119.1
1992	114	119.1
1993	121	119.1
1994	131	119.1
1995	104	119.1
1996	136	119.1
1997	123	119.1
1998	113	119.1
1999	110	119.1
2000	139	127.3
2001	145	127.3
2002	118	127.3
2003	128	127.3
2004	124	127.3
2005	117	127.3
2006	126	127.3
2007	132	127.3
2008	120	127.3
2009	124	127.3
2010	113	121
2011	117	121
2012	141	121
2013	119	121
2014	127	121
2015	123	121
2016	108	121
2017	120	121

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

First to last qualifying date each year at Mexican Hat
Year	First date	Last date
1946	1946-04-17	1946-09-28
1947	1947-05-04	1947-10-09
1949	1949-04-23	1949-10-04
1952	1952-05-02	1952-10-04
1953	1953-04-26	1953-10-10
1954	1954-04-17	1954-10-01
1955	1955-05-05	1955-10-15
1956	1956-05-03	1956-10-14
1957	1957-05-04	1957-10-02
1958	1958-05-05	1958-10-16
1959	1959-04-30	1959-09-20
1960	1960-04-06	1960-09-30
1961	1961-05-02	1961-10-07
1963	1963-04-16	1963-10-17
1965	1965-05-01	1965-10-11
1966	1966-05-05	1966-09-30
1967	1967-05-08	1967-10-12
1968	1968-05-20	1968-09-28
1970	1970-05-05	1970-09-19
1971	1971-05-02	1971-09-15
1972	1972-05-05	1972-10-04
1973	1973-05-10	1973-10-03
1974	1974-05-08	1974-09-27
1975	1975-05-12	1975-10-07
1976	1976-05-15	1976-09-21
1977	1977-05-01	1977-10-04
1978	1978-05-14	1978-10-02
1979	1979-05-06	1979-10-11
1980	1980-04-21	1980-10-10
1981	1981-04-26	1981-09-30
1982	1982-05-22	1982-09-27
1983	1983-05-09	1983-09-27
1984	1984-05-10	1984-09-25
1985	1985-04-16	1985-09-18
1986	1986-05-02	1986-09-17
1987	1987-04-18	1987-10-09
1988	1988-05-13	1988-10-04
1989	1989-04-08	1989-10-12
1990	1990-04-16	1990-09-28
1991	1991-05-09	1991-10-18
1992	1992-04-27	1992-10-04
1993	1993-05-12	1993-10-06
1994	1994-04-19	1994-09-30
1995	1995-05-22	1995-10-13
1996	1996-04-10	1996-10-13
1997	1997-05-05	1997-10-07
1998	1998-04-24	1998-10-01
1999	1999-05-09	1999-10-14
2000	2000-04-27	2000-10-04
2001	2001-04-18	2001-10-06
2002	2002-04-15	2002-09-28
2003	2003-05-17	2003-10-02
2004	2004-03-21	2004-09-19
2005	2005-05-16	2005-10-07
2006	2006-04-22	2006-10-03
2007	2007-04-28	2007-10-10
2008	2008-04-29	2008-10-02
2009	2009-04-23	2009-10-01
2010	2010-05-09	2010-10-02
2011	2011-05-06	2011-09-30
2012	2012-04-20	2012-10-05
2013	2013-04-28	2013-09-25
2014	2014-05-04	2014-09-28
2015	2015-05-01	2015-10-16
2016	2016-04-23	2016-10-15
2017	2017-04-19	2017-10-05

Every Fixed Threshold

Fixed thresholds at Mexican Hat
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	66	145	2001	120
35 C (95 F): Days	66	90	2012	90
40 C (104 F): Days	61	21	2003	11
90 F (32.2 C): Days	66	128	2001	102
100 F (37.8 C): Days	66	54	2002	49
110 F (43.3 C): Days	1	1	1971	1
0 C (32 F): Ice days (max	46	22	1992	2
0 C (32 F): Frost days (min	64	152	1975	126
-10 C (14 F): Days with min	61	37	1961	4
-20 C (-4 F): Days with min	10	9	1990	8
20 C (68 F): Tropical nights (min	64	57	2013	33
25 C (77 F): Days with min	26	8	2003	2
10 mm (0.39 in): Days with 10 mm or more rain	65	11	1992	1
25 mm (0.98 in): Days with 25 mm or more rain	10	3	2015	3
50 mm (1.97 in): Days with 50 mm or more rain	1	1	2005	1
10 cm (3.9 in): Days with 10 cm or more snowfall	7	2	1949	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1946.

Download the Data

Data for Mexican Hat 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).

Mexican Hat Threshold Days by Year (USC00425582)

Key Facts for Mexican Hat Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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