Acatlan de Osorio (Smn) Threshold Days by Year (MXN00021003)

14 fixed thresholds counted per year at Acatlan de Osorio (Smn) (MXN00021003): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Acatlan de Osorio (Smn) Thresholds

Acatlan de Osorio (Smn): days with 10 mm (0.39 in) or more of precipitation in 44 years, most in 1984 with 40.
Acatlan de Osorio (Smn): days with 25 mm (0.98 in) or more of precipitation in 44 years, most in 1967 with 19.
Acatlan de Osorio (Smn): days with a maximum temperature at or above 30 C (86 F) in 42 years, most in 2009 with 359.
Acatlan de Osorio (Smn): days with a maximum temperature at or above 35 C (95 F) in 42 years, most in 2009 with 289.
14 fixed thresholds have at least one qualifying day at Acatlan de Osorio (Smn).

Days at or above 30 C (86 F)

42 years with a qualifying day

Days per year at Acatlan de Osorio (Smn) with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 359 in 2009.

Days at or above 30 C (86 F) per year at Acatlan de Osorio (Smn)
Year	Days	Decade average
1945	354	341.6
1946	343	341.6
1947	337	341.6
1948	347	341.6
1949	327	341.6
1950	322	306.5
1951	342	306.5
1952	332	306.5
1953	326	306.5
1954	291	306.5
1955	243	306.5
1956	287	306.5
1957	329	306.5
1958	271	306.5
1959	322	306.5
1960	352	336
1961	327	336
1962	352	336
1963	342	336
1964	330	336
1965	321	336
1966	341	336
1967	327	336
1968	332	336
1969	336	336
1970	344	323.1
1971	346	323.1
1972	338	323.1
1973	329	323.1
1974	331	323.1
1975	354	323.1
1976	299	323.1
1978	298	323.1
1979	269	323.1
1980	258	313.6
1982	355	313.6
1983	335	313.6
1984	340	313.6
1986	280	313.6
2007	350	353
2008	350	353
2009	359	353

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

First to last qualifying date each year at Acatlan de Osorio (Smn)
Year	First date	Last date
1945	1945-01-01	1945-12-31
1946	1946-01-01	1946-12-31
1947	1947-01-01	1947-12-31
1948	1948-01-01	1948-12-31
1949	1949-01-01	1949-12-22
1950	1950-01-01	1950-12-31
1951	1951-01-01	1951-12-31
1952	1952-01-01	1952-12-31
1953	1953-01-01	1953-12-30
1954	1954-01-01	1954-12-31
1955	1955-01-01	1955-12-24
1956	1956-01-19	1956-12-31
1957	1957-01-01	1957-12-31
1958	1958-01-13	1958-12-26
1959	1959-01-04	1959-12-31
1960	1960-01-05	1960-12-31
1961	1961-01-01	1961-12-31
1962	1962-01-01	1962-12-31
1963	1963-01-01	1963-12-30
1964	1964-01-04	1964-12-31
1965	1965-01-01	1965-12-31
1966	1966-01-01	1966-12-31
1967	1967-01-01	1967-12-31
1968	1968-01-01	1968-12-31
1969	1969-01-01	1969-12-29
1970	1970-01-01	1970-12-31
1971	1971-01-01	1971-12-31
1972	1972-01-01	1972-12-29
1973	1973-01-01	1973-12-31
1974	1974-01-01	1974-12-31
1975	1975-01-01	1975-12-31
1976	1976-01-02	1976-12-31
1978	1978-01-01	1978-12-31
1979	1979-01-01	1979-12-16
1980	1980-01-21	1980-12-29
1982	1982-01-01	1982-12-31
1983	1983-01-01	1983-12-28
1984	1984-01-01	1984-12-31
1986	1986-01-19	1986-12-24
2007	2007-01-01	2007-12-31
2008	2008-01-01	2008-12-31
2009	2009-01-01	2009-12-31

Every Fixed Threshold

Fixed thresholds at Acatlan de Osorio (Smn)
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	42	359	2009	359
35 C (95 F): Days	42	289	2009	289
40 C (104 F): Days	35	102	2009	102
45 C (113 F): Days	4	7	1948	2
90 F (32.2 C): Days	42	332	2009	332
100 F (37.8 C): Days	42	177	2009	177
110 F (43.3 C): Days	6	7	1948	5
0 C (32 F): Frost days (min	2	4	1961	3
20 C (68 F): Tropical nights (min	42	269	2009	269
25 C (77 F): Days with min	7	31	2009	31
10 mm (0.39 in): Days with 10 mm or more rain	44	40	1984	25
25 mm (0.98 in): Days with 25 mm or more rain	44	19	1967	7
50 mm (1.97 in): Days with 50 mm or more rain	28	5	1963	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1945	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1945.

Download the Data

Data for Acatlan de Osorio (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).

Acatlan de Osorio (Smn) Threshold Days by Year (MXN00021003)

Key Facts for Acatlan de Osorio (Smn) Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related