Naco Threshold Days by Year (MXN00026057)

14 fixed thresholds counted per year at Naco (MXN00026057): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Naco Thresholds

Naco: days with a maximum temperature at or above 30 C (86 F) in 60 years, most in 1943 with 182.
Naco: days with a maximum temperature at or above 35 C (95 F) in 60 years, most in 1942 with 108.
Naco: days with a maximum temperature at or above 90 F (32.2 C) in 60 years, most in 1942 with 128.
Naco: nights with a minimum temperature at or below 0 C (32 F) in 60 years, most in 1952 with 63.
14 fixed thresholds have at least one qualifying day at Naco.

Days at or above 30 C (86 F)

60 years with a qualifying day

Days per year at Naco with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 182 in 1943.

Days at or above 30 C (86 F) per year at Naco
Year	Days	Decade average
1931	100	126
1933	57	126
1934	163	126
1935	117	126
1936	86	126
1937	162	126
1938	153	126
1939	170	126
1940	174	154.1
1941	135	154.1
1942	147	154.1
1943	182	154.1
1944	128	154.1
1945	144	154.1
1949	169	154.1
1950	143	129.5
1951	128	129.5
1952	144	129.5
1957	111	129.5
1958	141	129.5
1959	110	129.5
1965	129	134.3
1966	138	134.3
1969	136	134.3
1970	101	113.4
1972	101	113.4
1973	158	113.4
1974	102	113.4
1975	108	113.4
1976	93	113.4
1977	105	113.4
1978	130	113.4
1979	123	113.4
1980	119	112.3
1981	109	112.3
1982	115	112.3
1983	109	112.3
1984	95	112.3
1985	75	112.3
1986	101	112.3
1987	103	112.3
1988	125	112.3
1989	172	112.3
1995	135	142.3
1997	146	142.3
1998	143	142.3
1999	145	142.3
2000	149	141.9
2001	152	141.9
2002	146	141.9
2003	133	141.9
2004	129	141.9
2005	136	141.9
2006	131	141.9
2007	152	141.9
2008	132	141.9
2009	159	141.9
2010	126	139.7
2011	133	139.7
2012	160	139.7

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

First to last qualifying date each year at Naco
Year	First date	Last date
1931	1931-05-08	1931-10-26
1933	1933-06-01	1933-09-07
1934	1934-05-01	1934-11-14
1935	1935-06-01	1935-10-14
1936	1936-04-15	1936-09-09
1937	1937-04-12	1937-11-02
1938	1938-04-18	1938-12-03
1939	1939-04-21	1939-10-29
1940	1940-04-24	1940-11-09
1941	1941-05-26	1941-10-22
1942	1942-05-27	1942-11-14
1943	1943-03-20	1943-10-29
1944	1944-05-07	1944-10-17
1945	1945-05-01	1945-10-23
1949	1949-04-04	1949-12-09
1950	1950-05-11	1950-10-31
1951	1951-05-04	1951-10-17
1952	1952-05-02	1952-10-29
1957	1957-02-12	1957-09-29
1958	1958-04-20	1958-12-27
1959	1959-01-17	1959-10-28
1965	1965-04-17	1965-10-15
1966	1966-04-02	1966-12-09
1969	1969-04-01	1969-10-09
1970	1970-05-15	1970-09-26
1972	1972-04-06	1972-10-17
1973	1973-04-27	1973-12-31
1974	1974-04-25	1974-10-03
1975	1975-05-11	1975-10-11
1976	1976-05-11	1976-09-22
1977	1977-05-28	1977-10-02
1978	1978-04-24	1978-10-17
1979	1979-05-13	1979-10-25
1980	1980-05-18	1980-10-10
1981	1981-04-30	1981-09-29
1982	1982-05-17	1982-10-24
1983	1983-05-27	1983-09-26
1984	1984-04-16	1984-09-28
1985	1985-06-07	1985-10-06
1986	1986-04-21	1986-09-21
1987	1987-04-15	1987-10-11
1988	1988-03-25	1988-11-05
1989	1989-03-08	1989-10-24
1995	1995-05-04	1995-10-11
1997	1997-04-21	1997-10-10
1998	1998-03-23	1998-10-19
1999	1999-04-18	1999-11-01
2000	2000-04-13	2000-10-07
2001	2001-04-16	2001-11-02
2002	2002-04-01	2002-10-11
2003	2003-04-26	2003-10-25
2004	2004-03-19	2004-10-04
2005	2005-04-07	2005-11-09
2006	2006-04-05	2006-10-06
2007	2007-03-16	2007-10-31
2008	2008-04-14	2008-10-26
2009	2009-03-02	2009-10-18
2010	2010-05-04	2010-10-07
2011	2011-04-01	2011-10-19
2012	2012-04-08	2012-10-09

Every Fixed Threshold

Fixed thresholds at Naco
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	60	182	1943	160
35 C (95 F): Days	60	108	1942	44
40 C (104 F): Days	32	20	1995	1
90 F (32.2 C): Days	60	128	1942	90
100 F (37.8 C): Days	57	53	1995	11
110 F (43.3 C): Days	1	1	1995	1
0 C (32 F): Ice days (max	1	2	1978	2
0 C (32 F): Frost days (min	60	63	1952	27
-10 C (14 F): Days with min	2	2	2011	2
20 C (68 F): Tropical nights (min	57	84	1959	27
25 C (77 F): Days with min	9	3	1958	1
10 mm (0.39 in): Days with 10 mm or more rain	60	28	1959	8
25 mm (0.98 in): Days with 25 mm or more rain	56	7	1933	3
50 mm (1.97 in): Days with 50 mm or more rain	18	3	1934	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1931.

Download the Data

Data for Naco 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).

Naco Threshold Days by Year (MXN00026057)

Key Facts for Naco Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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