Guanacevi (Smn) Threshold Days by Year (MXN00010029)

11 fixed thresholds counted per year at Guanacevi (Smn) (MXN00010029): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Guanacevi (Smn) Thresholds

Guanacevi (Smn): nights with a minimum temperature at or below 0 C (32 F) in 75 years, most in 1934 with 95.
Guanacevi (Smn): days with a maximum temperature at or above 30 C (86 F) in 73 years, most in 1999 with 154.
Guanacevi (Smn): days with 10 mm (0.39 in) or more of precipitation in 67 years, most in 2000 with 55.
Guanacevi (Smn): days with 25 mm (0.98 in) or more of precipitation in 65 years, most in 1981 with 14.
11 fixed thresholds have at least one qualifying day at Guanacevi (Smn).

Days at or above 30 C (86 F)

73 years with a qualifying day

Days per year at Guanacevi (Smn) with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 154 in 1999.

Days at or above 30 C (86 F) per year at Guanacevi (Smn)
Year	Days	Decade average
1923	25	25.9
1924	28	25.9
1925	19	25.9
1926	7	25.9
1927	43	25.9
1928	30	25.9
1929	29	25.9
1930	9	15.7
1931	3	15.7
1932	21	15.7
1933	19	15.7
1934	14	15.7
1935	5	15.7
1936	10	15.7
1937	36	15.7
1938	24	15.7
1939	16	15.7
1940	9	21.5
1941	15	21.5
1942	20	21.5
1943	13	21.5
1944	31	21.5
1945	36	21.5
1946	25	21.5
1947	23	21.5
1948	16	21.5
1949	27	21.5
1950	16	40.1
1951	50	40.1
1952	85	40.1
1953	42	40.1
1954	44	40.1
1956	21	40.1
1957	42	40.1
1958	29	40.1
1959	32	40.1
1960	33	30.4
1961	46	30.4
1962	58	30.4
1963	30	30.4
1964	11	30.4
1965	22	30.4
1966	22	30.4
1967	12	30.4
1968	33	30.4
1969	37	30.4
1970	19	19.7
1971	13	19.7
1972	25	19.7
1973	20	19.7
1974	28	19.7
1975	16	19.7
1976	11	19.7
1977	1	19.7
1978	32	19.7
1979	32	19.7
1980	57	35.4
1981	30	35.4
1982	53	35.4
1983	43	35.4
1984	14	35.4
1985	31	35.4
1986	19	35.4
1987	20	35.4
1989	52	35.4
1990	46	59.8
1991	49	59.8
1992	31	59.8
1993	22	59.8
1994	57	59.8
1999	154	59.8
2000	115	100
2003	85	100

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

First to last qualifying date each year at Guanacevi (Smn)
Year	First date	Last date
1923	1923-05-04	1923-07-31
1924	1924-05-16	1924-08-19
1925	1925-04-29	1925-06-23
1926	1926-06-07	1926-07-11
1927	1927-05-01	1927-09-29
1928	1928-05-20	1928-07-07
1929	1929-05-06	1929-09-08
1930	1930-05-14	1930-09-18
1931	1931-06-13	1931-07-05
1932	1932-05-28	1932-06-27
1933	1933-05-17	1933-06-12
1934	1934-06-04	1934-06-19
1935	1935-05-21	1935-06-21
1936	1936-05-02	1936-07-20
1937	1937-04-03	1937-08-13
1938	1938-05-12	1938-06-20
1939	1939-05-17	1939-06-21
1940	1940-05-02	1940-07-12
1941	1941-05-07	1941-06-17
1942	1942-05-05	1942-06-27
1943	1943-04-24	1943-06-05
1944	1944-05-29	1944-08-04
1945	1945-04-29	1945-09-23
1946	1946-03-31	1946-06-30
1947	1947-05-28	1947-07-11
1948	1948-04-05	1948-09-06
1949	1949-04-27	1949-06-19
1950	1950-05-01	1950-06-08
1951	1951-04-23	1951-10-04
1952	1952-02-27	1952-09-12
1953	1953-05-21	1953-10-03
1954	1954-03-10	1954-06-21
1956	1956-05-04	1956-08-17
1957	1957-05-20	1957-09-20
1958	1958-05-24	1958-08-06
1959	1959-04-04	1959-09-03
1960	1960-05-28	1960-08-04
1961	1961-04-20	1961-06-25
1962	1962-05-13	1962-08-31
1963	1963-04-08	1963-08-22
1964	1964-05-10	1964-07-29
1965	1965-04-23	1965-08-07
1966	1966-04-29	1966-06-19
1967	1967-05-02	1967-06-16
1968	1968-05-14	1968-08-15
1969	1969-04-24	1969-08-19
1970	1970-04-23	1970-10-30
1971	1971-05-02	1971-06-08
1972	1972-04-05	1972-07-02
1973	1973-05-23	1973-07-08
1974	1974-05-13	1974-07-01
1975	1975-06-03	1975-07-10
1976	1976-04-21	1976-06-22
1977	1977-04-19	1977-04-19
1978	1978-05-09	1978-07-19
1979	1979-04-26	1979-07-24
1980	1980-05-13	1980-08-05
1981	1981-05-05	1981-07-25
1982	1982-04-05	1982-08-03
1983	1983-04-28	1983-07-27
1984	1984-05-03	1984-06-09
1985	1985-05-05	1985-06-18
1986	1986-04-13	1986-06-17
1987	1987-04-17	1987-07-08
1989	1989-05-04	1989-07-19
1990	1990-04-28	1990-06-30
1991	1991-04-20	1991-06-30
1992	1992-06-10	1992-07-18
1993	1993-03-28	1993-06-25
1994	1994-05-05	1994-08-20
1999	1999-04-21	1999-10-30
2000	2000-04-21	2000-09-27
2003	2003-02-17	2003-09-26

Every Fixed Threshold

Fixed thresholds at Guanacevi (Smn)
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	73	154	1999	85
35 C (95 F): Days	18	33	1952	10
90 F (32.2 C): Days	53	47	1999	37
100 F (37.8 C): Days	3	8	1952	1
0 C (32 F): Ice days (max	3	2	1925	2
0 C (32 F): Frost days (min	75	95	1934	94
-10 C (14 F): Days with min	6	3	1953	1
20 C (68 F): Tropical nights (min	2	2	1928	1
10 mm (0.39 in): Days with 10 mm or more rain	67	55	2000	18
25 mm (0.98 in): Days with 25 mm or more rain	65	14	1981	4
50 mm (1.97 in): Days with 50 mm or more rain	12	2	1928	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1923.

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Data for Guanacevi (Smn) 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).

Guanacevi (Smn) Threshold Days by Year (MXN00010029)

Key Facts for Guanacevi (Smn) Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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