Atotonilco el Alto climate — normals and trends

Q: What is the climate of Atotonilco el Alto?

Atotonilco el Alto has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 19.1 °C and it receives 726 mm of precipitation per year.

Q: What is the hottest day ever recorded in Atotonilco el Alto?

The hottest day measured in Atotonilco el Alto between 1940 and 2025 was 13 June 2023, reaching 38.3 °C.

Q: What is the coldest day in Atotonilco el Alto?

The coldest day measured in Atotonilco el Alto between 1940 and 2025 was 24 January 1955, at -0.5 °C.

Q: Does it snow in Atotonilco el Alto?

Almost never: Atotonilco el Alto sees virtually no snow, with about 0 frost days per year.

Q: Has the climate of Atotonilco el Alto warmed?

Yes: Atotonilco el Alto warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Atotonilco el Alto?

The wettest day measured in Atotonilco el Alto between 1940 and 2025 was 1 January 1947, with 78 mm of rain in 24 hours.

Q: What was the windiest day in Atotonilco el Alto?

The windiest day measured in Atotonilco el Alto between 1940 and 2025 was 4 March 1983, with winds reaching 30.9 km/h.

Q: What is the warmest month in Atotonilco el Alto?

The warmest month in Atotonilco el Alto is May (22.9 °C on average); the coldest is January (15.2 °C).

Q: How much does it rain in Atotonilco el Alto?

Atotonilco el Alto receives on average 726 mm of precipitation per year, spread over about 100 rainy days.

Q: Is it sunny in Atotonilco el Alto?

Atotonilco el Alto gets on average 10.9 hours of sunshine per day, roughly 3,979 hours per year over 1940-2025.

Atotonilco el Alto (Mexico) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 19.1 °C and it receives 726 mm of precipitation per year.

These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.

The warmest month is May (22.9 °C on average) and the coldest is January (15.2 °C). Rainfall peaks in July.

Atotonilco el Alto averages 0 frost days, 56 hot days (≥ 30 °C) and 100 rainy days per year.

Atotonilco el Alto has warmed by +2.3 °C between 1940 and 2025, or +0.27 °C per decade. This trend is statistically significant.

The hottest day of the period reached 38.3 °C (on 13 June 2023) and the coldest -0.5 °C (on 24 January 1955).

Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.

Climate normals · ERA5

Atotonilco el AltoJalisco

coords: 20.55°, -102.51°
period: 1940–2025 · 86 yrs

CsaHot-summer MediterraneanWarmest monthMayColdest monthJanuaryWettest monthJulyDriest monthMarch

Mean daily temperature

19.1°C

Average daily high

26.6°C

Average daily low

12.4°C

Annual rainfall

726mm

Sunshine / day

10.9h

Mean relative humidity

56%

Average peak wind

11.9km/h

Seasonal range

7.7°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

56 d/yr

Rainy days (≥ 1 mm)

100 d/yr

Annual snowfall

0.0 cm

Average feels-like high

26.4 °C

Average feels-like low

11.2 °C

Average peak gust

31.8 km/h

Tropical nights (≥ 20 °C)

0 d/yr

Solar radiation

21.7 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.3 °C

since 1940

+0.3 °C per decade · r² = 0.79 · p = < 0.001

19402025

Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).

A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.

Records for the period

Hottest day

38.3 °C

13 June 2023

Coldest day

-0.5 °C

24 January 1955

Wettest day

78 mm

1 January 1947

Windiest day

30.9 km/h

4 March 1983

Strongest gust

75.2 km/h

4 March 1983

Hottest feels-like

39.1 °C

15 June 1998

Coldest feels-like

-5.2 °C

14 December 1997

Snowiest day

2.0 cm

1 January 1947

Sunniest day

13.1 h

14 July 1957

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	35.9 °C21 May 2025	5.9 °C21 December 2025	20.6 °C	878 mm	109	0
2024	38.1 °C10 May 2024	4.0 °C29 December 2024	20.9 °C	918 mm	102	0
2023	38.3 °C13 June 2023	5.4 °C17 January 2023	20.7 °C	634 mm	126	0
2022	36.3 °C10 May 2022	6.3 °C11 February 2022	20.1 °C	862 mm	72	0
2021	34.6 °C26 May 2021	3.1 °C2 January 2021	19.9 °C	967 mm	78	0
2020	35.8 °C4 June 2020	3.6 °C6 January 2020	20.3 °C	837 mm	99	0
2019	34.0 °C19 May 2019	3.3 °C28 January 2019	20.3 °C	749 mm	90	0
2018	35.7 °C31 May 2018	2.0 °C23 December 2018	19.6 °C	985 mm	61	0
2017	35.6 °C22 May 2017	3.9 °C12 December 2017	19.9 °C	830 mm	80	0
2016	35.4 °C25 May 2016	2.1 °C17 January 2016	19.8 °C	732 mm	72	0
2015	32.9 °C18 May 2015	5.9 °C15 December 2015	19.8 °C	971 mm	28	0
2014	32.6 °C12 April 2014	5.5 °C17 January 2014	19.5 °C	910 mm	60	0
2013	35.5 °C31 May 2013	2.9 °C4 March 2013	19.8 °C	867 mm	72	0
2012	36.2 °C30 May 2012	4.9 °C5 January 2012	19.9 °C	675 mm	85	0
2011	36.2 °C26 May 2011	2.5 °C29 November 2011	20.3 °C	689 mm	107	0
2010	35.6 °C8 May 2010	2.4 °C10 December 2010	19.3 °C	952 mm	60	0
2009	35.0 °C13 June 2009	4.5 °C27 December 2009	20.2 °C	615 mm	93	0
2008	35.3 °C11 May 2008	3.6 °C3 January 2008	19.4 °C	798 mm	61	0
2007	35.3 °C1 June 2007	5.2 °C28 January 2007	19.6 °C	787 mm	67	0
2006	34.5 °C23 May 2006	0.8 °C25 December 2006	19.7 °C	779 mm	87	0
2005	36.7 °C7 June 2005	5.2 °C26 December 2005	20.0 °C	594 mm	100	0
2004	32.7 °C19 April 2004	3.5 °C19 January 2004	19.0 °C	866 mm	38	0
2003	36.8 °C4 May 2003	3.5 °C21 December 2003	19.9 °C	763 mm	82	0
2002	36.2 °C4 May 2002	2.7 °C14 January 2002	19.8 °C	782 mm	80	0
2001	35.2 °C16 April 2001	4.5 °C28 December 2001	19.6 °C	753 mm	64	0
2000	36.0 °C20 April 2000	3.1 °C10 February 2000	19.7 °C	668 mm	73	0
1999	36.7 °C1 June 1999	2.4 °C21 December 1999	19.6 °C	680 mm	80	0
1998	36.7 °C8 May 1998	1.2 °C6 February 1998	20.2 °C	826 mm	98	0
1997	34.9 °C3 May 1997	0.1 °C14 December 1997	19.2 °C	674 mm	46	0
1996	34.0 °C11 May 1996	2.4 °C3 January 1996	19.6 °C	818 mm	45	0
1995	34.9 °C9 June 1995	4.0 °C14 January 1995	20.0 °C	805 mm	50	0
1994	34.9 °C9 May 1994	4.9 °C3 January 1994	20.0 °C	769 mm	73	0
1993	34.6 °C5 June 1993	5.2 °C10 February 1993	19.2 °C	820 mm	47	0
1992	34.8 °C28 June 1992	2.6 °C5 February 1992	18.6 °C	968 mm	37	0
1991	35.8 °C20 April 1991	4.3 °C15 January 1991	19.4 °C	919 mm	77	0
1990	35.0 °C1 June 1990	4.0 °C22 February 1990	19.3 °C	956 mm	48	0
1989	36.0 °C19 May 1989	2.3 °C25 December 1989	19.4 °C	653 mm	67	0
1988	35.3 °C11 May 1988	2.4 °C22 January 1988	19.5 °C	760 mm	67	0
1987	33.2 °C23 May 1987	4.1 °C30 January 1987	19.3 °C	624 mm	47	0
1986	36.2 °C12 May 1986	2.9 °C6 February 1986	19.0 °C	870 mm	56	0
1985	34.3 °C15 May 1985	0.2 °C7 January 1985	18.9 °C	808 mm	39	0
1984	33.8 °C23 May 1984	4.8 °C10 January 1984	18.8 °C	823 mm	42	0
1983	36.1 °C1 May 1983	0.7 °C23 January 1983	18.9 °C	784 mm	57	0
1982	36.2 °C4 June 1982	4.6 °C18 December 1982	19.7 °C	622 mm	89	0
1981	34.3 °C8 June 1981	2.3 °C24 January 1981	19.2 °C	790 mm	43	0
1980	35.0 °C1 June 1980	2.1 °C27 January 1980	19.4 °C	817 mm	61	0
1979	33.8 °C23 June 1979	2.7 °C26 November 1979	19.5 °C	561 mm	76	0
1978	34.4 °C18 April 1978	3.6 °C10 February 1978	19.2 °C	818 mm	58	0
1977	34.2 °C21 May 1977	4.9 °C23 December 1977	19.0 °C	749 mm	46	0
1976	34.6 °C27 May 1976	0.1 °C25 February 1976	18.9 °C	585 mm	40	0
1975	32.9 °C19 April 1975	1.5 °C27 December 1975	18.6 °C	680 mm	45	0
1974	33.5 °C22 April 1974	4.5 °C27 November 1974	18.5 °C	715 mm	31	0
1973	34.3 °C4 June 1973	3.6 °C13 January 1973	18.7 °C	712 mm	45	0
1972	34.1 °C21 May 1972	4.1 °C22 December 1972	19.0 °C	571 mm	49	0
1971	34.1 °C20 May 1971	3.0 °C8 February 1971	18.5 °C	679 mm	38	0
1970	32.8 °C23 April 1970	1.4 °C14 January 1970	18.4 °C	610 mm	46	0
1969	34.9 °C14 June 1969	4.2 °C10 December 1969	19.2 °C	414 mm	55	0
1968	32.4 °C27 May 1968	4.8 °C18 February 1968	18.5 °C	543 mm	25	0
1967	34.1 °C7 May 1967	2.9 °C11 January 1967	18.3 °C	776 mm	31	0
1966	33.4 °C13 May 1966	3.2 °C30 January 1966	18.1 °C	692 mm	32	0
1965	34.6 °C28 May 1965	3.2 °C24 January 1965	18.4 °C	688 mm	53	0
1964	33.9 °C1 May 1964	2.8 °C12 January 1964	18.6 °C	572 mm	45	0
1963	33.8 °C30 April 1963	2.2 °C25 December 1963	18.3 °C	688 mm	40	0
1962	34.5 °C5 June 1962	3.3 °C6 January 1962	18.8 °C	539 mm	42	0
1961	34.1 °C22 April 1961	3.3 °C12 February 1961	18.6 °C	596 mm	45	0
1960	33.8 °C1 June 1960	-0.1 °C14 February 1960	18.8 °C	506 mm	58	1
1959	32.1 °C26 April 1959	4.6 °C17 December 1959	17.9 °C	833 mm	13	0
1958	33.8 °C29 April 1958	2.7 °C30 January 1958	18.1 °C	912 mm	48	0
1957	33.2 °C25 May 1957	4.4 °C12 December 1957	19.3 °C	374 mm	77	0
1956	33.7 °C8 May 1956	1.4 °C13 January 1956	18.5 °C	532 mm	46	0
1955	34.4 °C24 May 1955	-0.5 °C24 January 1955	18.4 °C	733 mm	59	1
1954	33.9 °C7 June 1954	3.9 °C21 December 1954	18.7 °C	550 mm	34	0
1953	34.6 °C23 May 1953	3.1 °C13 December 1953	18.4 °C	547 mm	45	0
1952	33.4 °C9 May 1952	2.9 °C5 February 1952	18.3 °C	662 mm	35	0
1951	32.9 °C22 April 1951	2.6 °C4 February 1951	19.1 °C	598 mm	41	0
1950	33.1 °C5 May 1950	2.7 °C14 February 1950	18.6 °C	524 mm	42	0
1949	34.5 °C23 May 1949	4.2 °C16 November 1949	18.6 °C	605 mm	27	0
1948	32.4 °C2 May 1948	3.6 °C20 January 1948	18.0 °C	906 mm	32	0
1947	31.8 °C1 May 1947	0.8 °C2 January 1947	17.6 °C	826 mm	10	0
1946	34.9 °C20 May 1946	3.6 °C8 January 1946	18.4 °C	576 mm	47	0
1945	34.0 °C26 May 1945	4.5 °C15 January 1945	18.4 °C	623 mm	50	0
1944	33.6 °C5 June 1944	3.3 °C14 January 1944	17.9 °C	620 mm	40	0
1943	33.3 °C18 May 1943	4.3 °C6 February 1943	17.6 °C	704 mm	27	0
1942	33.0 °C18 May 1942	2.5 °C29 December 1942	18.0 °C	587 mm	23	0
1941	33.3 °C9 May 1941	2.5 °C10 February 1941	17.7 °C	810 mm	18	0
1940	32.4 °C10 June 1940	0.6 °C10 February 1940	17.8 °C	545 mm	24	0

Normals computed over complete calendar years 1940–2025.

A specific year

Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?

Year

Across the whole year

Average daily high

28.5 °C

+1.9 °C

Hot days (≥ 30 °C)

109 d/yr

+53

Frost days (< 0 °C)

0 d/yr

Annual rainfall

878 mm

+152 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	24.8 °C	+1.8 °C	8 mm	-6 mm
Feb	28.2 °C	+3.3 °C	1 mm	-6 mm
Mar	30.2 °C	+2.7 °C	0 mm	-5 mm
Apr	31.6 °C	+1.8 °C	1 mm	-4 mm
May	32.5 °C	+1.5 °C	23 mm	-4 mm
Jun	28.7 °C	-0.2 °C	208 mm	+70 mm
Jul	27.4 °C	+1.0 °C	165 mm	-21 mm
Aug	27.9 °C	+1.5 °C	216 mm	+57 mm
Sep	28.0 °C	+1.8 °C	208 mm	+82 mm
Oct	28.8 °C	+2.6 °C	39 mm	-6 mm
Nov	28.1 °C	+2.9 °C	0 mm	-8 mm
Dec	25.8 °C	+2.4 °C	8 mm	+1 mm

The year's extremes

Hottest day

35.9 °C

21 May 2025

Coldest day

5.9 °C

21 Dec 2025

Wettest day

31.7 mm

10 Sep 2025

Windiest day

23.2 km/h

10 Oct 2025

Strongest gust

55.4 km/h

27 Mar 2025

Hottest feels-like

36.8 °C

17 May 2025

Coldest feels-like

2.7 °C

19 Dec 2025

Sunniest day

12.8 h

6 Jun 2025

What was the weather like that day?

Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.

Date

Frequently asked questions

What is the climate of Atotonilco el Alto?

Atotonilco el Alto has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 19.1 °C and it receives 726 mm of precipitation per year.

What is the hottest day ever recorded in Atotonilco el Alto?

The hottest day measured in Atotonilco el Alto between 1940 and 2025 was 13 June 2023, reaching 38.3 °C.

What is the coldest day in Atotonilco el Alto?

The coldest day measured in Atotonilco el Alto between 1940 and 2025 was 24 January 1955, at -0.5 °C.

Does it snow in Atotonilco el Alto?

Almost never: Atotonilco el Alto sees virtually no snow, with about 0 frost days per year.

Has the climate of Atotonilco el Alto warmed?

Yes: Atotonilco el Alto warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Atotonilco el Alto?

The wettest day measured in Atotonilco el Alto between 1940 and 2025 was 1 January 1947, with 78 mm of rain in 24 hours.

What was the windiest day in Atotonilco el Alto?

The windiest day measured in Atotonilco el Alto between 1940 and 2025 was 4 March 1983, with winds reaching 30.9 km/h.

What is the warmest month in Atotonilco el Alto?

The warmest month in Atotonilco el Alto is May (22.9 °C on average); the coldest is January (15.2 °C).

How much does it rain in Atotonilco el Alto?

Atotonilco el Alto receives on average 726 mm of precipitation per year, spread over about 100 rainy days.

Is it sunny in Atotonilco el Alto?

Atotonilco el Alto gets on average 10.9 hours of sunshine per day, roughly 3,979 hours per year over 1940-2025.

What is the biggest single-day snowfall in Atotonilco el Alto?

The heaviest 24-hour snowfall measured in Atotonilco el Alto between 1940 and 2025 was 1 January 1947, with 2.0 cm.

Are there tropical nights in Atotonilco el Alto?

Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Atotonilco el Alto.

What was the most extreme apparent temperature in Atotonilco el Alto?

In Atotonilco el Alto, between 1940 and 2025, the highest apparent temperature reached 39.1 °C on 15 June 1998, and the lowest was -5.2 °C on 14 December 1997.

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