Atoyac (Smn) Threshold Days by Year

14 fixed thresholds counted per year at Atoyac (Smn) (MXN00012011): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Atoyac (Smn) Thresholds

Atoyac (Smn): days with 10 mm (0.39 in) or more of precipitation in 43 years, most in 1984 with 45.
Atoyac (Smn): days with 25 mm (0.98 in) or more of precipitation in 40 years, most in 1927 with 21.
Atoyac (Smn): days with 50 mm (1.97 in) or more of precipitation in 35 years, most in 1927 with 13.
Atoyac (Smn): nights with a minimum temperature at or above 20 C (68 F) in 32 years, most in 1931 with 365.
14 fixed thresholds have at least one qualifying day at Atoyac (Smn).

Days at or above 30 C (86 F)

31 years with a qualifying day

Days per year at Atoyac (Smn) with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 363 in 1927.

Days at or above 30 C (86 F) per year at Atoyac (Smn)
Year	Days	Decade average
1922	334	357.6
1923	359	357.6
1924	360	357.6
1926	361	357.6
1927	363	357.6
1928	363	357.6
1929	363	357.6
1930	363	363
1931	363	363
1943	323	285.8
1945	334	285.8
1946	270	285.8
1947	216	285.8
1957	351	351
1960	350	345.4
1961	335	345.4
1962	333	345.4
1963	355	345.4
1964	341	345.4
1965	360	345.4
1966	343	345.4
1967	343	345.4
1968	349	345.4
1970	355	343.3
1971	352	343.3
1972	351	343.3
1973	344	343.3
1974	326	343.3
1975	332	343.3
1983	274	296.5
1984	319	296.5

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

First to last qualifying date each year at Atoyac (Smn)
Year	First date	Last date
1922	1922-01-14	1922-12-31
1923	1923-01-01	1923-12-31
1924	1924-01-01	1924-12-31
1926	1926-01-01	1926-12-31
1927	1927-01-01	1927-12-31
1928	1928-01-01	1928-12-31
1929	1929-01-01	1929-12-31
1930	1930-01-01	1930-12-31
1931	1931-01-01	1931-12-31
1943	1943-01-01	1943-12-31
1945	1945-01-01	1945-12-25
1946	1946-01-11	1946-12-28
1947	1947-01-02	1947-12-31
1957	1957-01-01	1957-12-31
1960	1960-01-01	1960-12-31
1961	1961-01-01	1961-12-31
1962	1962-01-01	1962-12-30
1963	1963-01-01	1963-12-31
1964	1964-01-01	1964-12-30
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
1970	1970-01-01	1970-12-31
1971	1971-01-01	1971-12-31
1972	1972-01-01	1972-12-31
1973	1973-01-01	1973-12-31
1974	1974-01-01	1974-12-18
1975	1975-01-01	1975-12-23
1983	1983-01-01	1983-12-30
1984	1984-01-01	1984-12-31

Every Fixed Threshold

Fixed thresholds at Atoyac (Smn)
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	31	363	1927	319
35 C (95 F): Days	31	338	1928	16
40 C (104 F): Days	8	65	1926	11
45 C (113 F): Days	1	4	1926	4
90 F (32.2 C): Days	31	356	1928	72
100 F (37.8 C): Days	26	190	1928	6
110 F (43.3 C): Days	2	4	1926	1
20 C (68 F): Tropical nights (min	32	365	1931	365
25 C (77 F): Days with min	32	297	1960	67
10 mm (0.39 in): Days with 10 mm or more rain	43	45	1984	45
25 mm (0.98 in): Days with 25 mm or more rain	40	21	1927	21
50 mm (1.97 in): Days with 50 mm or more rain	35	13	1927	9
100 mm (3.94 in): Days with 100 mm or more rain	17	2	1923	2
200 mm (7.87 in): Days with 200 mm or more rain	4	1	1926	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1922.

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Data for Atoyac (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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Atoyac (Smn) Threshold Days by Year

Key Facts for Atoyac (Smn) Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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