Amealco Threshold Days by Year (MXN00022001)

8 fixed thresholds counted per year at Amealco (MXN00022001): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Amealco Thresholds

Amealco: days with 10 mm (0.39 in) or more of precipitation in 42 years, most in 1967 with 48.
Amealco: nights with a minimum temperature at or below 0 C (32 F) in 38 years, most in 1950 with 57.
Amealco: days with a maximum temperature at or above 30 C (86 F) in 37 years, most in 1945 with 44.
Amealco: days with 25 mm (0.98 in) or more of precipitation in 32 years, most in 2003 with 18.
8 fixed thresholds have at least one qualifying day at Amealco.

Days at or above 30 C (86 F)

37 years with a qualifying day

Days per year at Amealco with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 44 in 1945.

Days at or above 30 C (86 F) per year at Amealco
Year	Days	Decade average
1945	44	18.8
1946	7	18.8
1947	4	18.8
1948	20	18.8
1950	4	7.8
1951	2	7.8
1952	2	7.8
1953	8	7.8
1954	7	7.8
1955	20	7.8
1956	12	7.8
1957	7	7.8
1958	6	7.8
1959	10	7.8
1960	15	13.6
1961	15	13.6
1962	44	13.6
1964	8	13.6
1965	2	13.6
1967	5	13.6
1968	9	13.6
1969	11	13.6
1970	17	19.5
1971	13	19.5
1972	43	19.5
1978	5	19.5
1986	13	7.5
1989	2	7.5
1990	1	1
2000	3	4.4
2002	2	4.4
2003	1	4.4
2005	2	4.4
2007	1	4.4
2008	16	4.4
2009	6	4.4
2010	1	1

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

First to last qualifying date each year at Amealco
Year	First date	Last date
1945	1945-04-01	1945-05-31
1946	1946-05-16	1946-05-26
1947	1947-03-27	1947-05-15
1948	1948-05-03	1948-08-20
1950	1950-04-15	1950-08-08
1951	1951-09-20	1951-12-20
1952	1952-05-09	1952-05-13
1953	1953-04-28	1953-06-08
1954	1954-03-27	1954-07-29
1955	1955-04-05	1955-06-26
1956	1956-04-06	1956-06-17
1957	1957-03-05	1957-05-31
1958	1958-05-05	1958-05-19
1959	1959-03-07	1959-04-27
1960	1960-03-02	1960-12-07
1961	1961-04-19	1961-12-07
1962	1962-02-05	1962-12-09
1964	1964-01-21	1964-05-07
1965	1965-05-17	1965-05-27
1967	1967-05-08	1967-05-12
1968	1968-05-10	1968-06-09
1969	1969-05-03	1969-07-22
1970	1970-04-02	1970-12-15
1971	1971-04-22	1971-12-23
1972	1972-03-09	1972-12-31
1978	1978-04-24	1978-05-12
1986	1986-03-27	1986-05-19
1989	1989-04-23	1989-04-29
1990	1990-06-11	1990-06-11
2000	2000-01-27	2000-12-11
2002	2002-04-26	2002-05-12
2003	2003-05-11	2003-05-11
2005	2005-05-02	2005-05-23
2007	2007-05-15	2007-05-15
2008	2008-03-20	2008-12-27
2009	2009-01-08	2009-06-13
2010	2010-06-02	2010-06-02

Every Fixed Threshold

Fixed thresholds at Amealco
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	37	44	1945	1
35 C (95 F): Days	3	2	1968	1
90 F (32.2 C): Days	8	9	1972	1
100 F (37.8 C): Days	1	1	1968	1
0 C (32 F): Frost days (min	38	57	1950	6
10 mm (0.39 in): Days with 10 mm or more rain	42	48	1967	23
25 mm (0.98 in): Days with 25 mm or more rain	32	18	2003	9
50 mm (1.97 in): Days with 50 mm or more rain	16	4	2003	2

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 Amealco 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).

Amealco Threshold Days by Year (MXN00022001)

Key Facts for Amealco Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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