Pénjamo climate — normals and trends

Q: What is the climate of Pénjamo?

Pénjamo has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 18.9 °C and it receives 626 mm of precipitation per year.

Q: What is the hottest day ever recorded in Pénjamo?

The hottest day measured in Pénjamo between 1940 and 2025 was 24 May 2024, reaching 38.3 °C.

Q: What is the coldest day in Pénjamo?

The coldest day measured in Pénjamo between 1940 and 2025 was 18 February 1940, at -1.4 °C.

Q: Does it snow in Pénjamo?

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

Q: Has the climate of Pénjamo warmed?

Yes: Pénjamo warmed by +2.6 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Pénjamo?

The wettest day measured in Pénjamo between 1940 and 2025 was 1 January 1947, with 67 mm of rain in 24 hours.

Q: What was the windiest day in Pénjamo?

The windiest day measured in Pénjamo between 1940 and 2025 was 4 March 1983, with winds reaching 32.4 km/h.

Q: What is the warmest month in Pénjamo?

The warmest month in Pénjamo is May (22.8 °C on average); the coldest is January (14.9 °C).

Q: How much does it rain in Pénjamo?

Pénjamo receives on average 626 mm of precipitation per year, spread over about 91 rainy days.

Q: Is it sunny in Pénjamo?

Pénjamo gets on average 11.0 hours of sunshine per day, roughly 4,015 hours per year over 1940-2025.

Pénjamo (Mexico) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 18.9 °C and it receives 626 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 (22.8 °C on average) and the coldest is January (14.9 °C). Rainfall peaks in July.

Pénjamo averages 0 frost days, 61 hot days (≥ 30 °C) and 91 rainy days per year.

Pénjamo has warmed by +2.6 °C between 1940 and 2025, or +0.30 °C per decade. This trend is statistically significant.

The hottest day of the period reached 38.3 °C (on 24 May 2024) and the coldest -1.4 °C (on 18 February 1940).

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

PénjamoGuanajuato

coords: 20.43°, -101.72°
period: 1940–2025 · 86 yrs

BShHot semi-aridWarmest monthMayColdest monthJanuaryWettest monthJulyDriest monthDecember

Mean daily temperature

18.9°C

Average daily high

26.6°C

Average daily low

12.1°C

Annual rainfall

626mm

Sunshine / day

11.0h

Mean relative humidity

55%

Average peak wind

12.2km/h

Seasonal range

7.9°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

61 d/yr

Rainy days (≥ 1 mm)

91 d/yr

Annual snowfall

0.1 cm

Average feels-like high

26.1 °C

Average feels-like low

10.9 °C

Average peak gust

32.5 km/h

Tropical nights (≥ 20 °C)

0 d/yr

Solar radiation

22.0 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.6 °C

since 1940

+0.3 °C per decade · r² = 0.77 · 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

24 May 2024

Coldest day

-1.4 °C

18 February 1940

Wettest day

67 mm

1 January 1947

Windiest day

32.4 km/h

4 March 1983

Strongest gust

77.8 km/h

4 March 1983

Hottest feels-like

38.7 °C

25 May 2024

Coldest feels-like

-5.6 °C

14 December 1997

Snowiest day

2.7 cm

11 January 1967

Sunniest day

13.0 h

29 June 1942

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	36.8 °C16 May 2025	4.9 °C22 January 2025	20.3 °C	854 mm	111	0
2024	38.3 °C24 May 2024	3.8 °C29 December 2024	20.9 °C	772 mm	113	0
2023	37.0 °C11 June 2023	3.6 °C28 December 2023	20.6 °C	520 mm	136	0
2022	35.8 °C10 May 2022	5.6 °C20 December 2022	19.9 °C	644 mm	78	0
2021	34.6 °C27 May 2021	3.3 °C2 January 2021	19.5 °C	846 mm	81	0
2020	35.7 °C21 April 2020	3.6 °C5 January 2020	20.3 °C	593 mm	112	0
2019	34.6 °C20 May 2019	3.0 °C28 January 2019	20.3 °C	650 mm	106	0
2018	36.9 °C30 May 2018	0.6 °C21 December 2018	19.2 °C	999 mm	71	0
2017	36.2 °C22 May 2017	3.5 °C11 December 2017	19.7 °C	799 mm	84	0
2016	36.9 °C25 May 2016	2.8 °C17 January 2016	19.5 °C	718 mm	67	0
2015	33.9 °C11 May 2015	4.8 °C15 December 2015	19.4 °C	941 mm	36	0
2014	33.7 °C15 June 2014	4.3 °C17 January 2014	19.5 °C	702 mm	60	0
2013	35.2 °C22 May 2013	2.5 °C3 March 2013	19.7 °C	797 mm	74	0
2012	35.9 °C31 May 2012	4.2 °C7 January 2012	19.8 °C	599 mm	95	0
2011	36.6 °C24 May 2011	1.7 °C29 November 2011	20.3 °C	530 mm	117	0
2010	35.6 °C7 May 2010	2.3 °C11 December 2010	19.3 °C	676 mm	82	0
2009	35.6 °C13 June 2009	4.3 °C27 December 2009	20.1 °C	542 mm	103	0
2008	35.7 °C11 May 2008	1.9 °C3 January 2008	19.3 °C	749 mm	73	0
2007	35.1 °C3 June 2007	4.4 °C8 December 2007	19.4 °C	680 mm	76	0
2006	35.0 °C26 April 2006	-0.4 °C26 December 2006	19.6 °C	658 mm	103	1
2005	37.2 °C7 June 2005	3.7 °C28 December 2005	19.9 °C	507 mm	104	0
2004	33.4 °C14 May 2004	2.6 °C19 January 2004	18.7 °C	718 mm	47	0
2003	37.1 °C8 May 2003	2.7 °C20 December 2003	19.6 °C	713 mm	79	0
2002	35.6 °C2 May 2002	2.8 °C14 January 2002	19.4 °C	736 mm	83	0
2001	35.5 °C13 April 2001	4.6 °C28 December 2001	19.2 °C	607 mm	68	0
2000	35.7 °C20 April 2000	3.4 °C10 February 2000	19.6 °C	518 mm	95	0
1999	36.0 °C1 June 1999	3.2 °C22 December 1999	19.4 °C	553 mm	87	0
1998	37.7 °C8 May 1998	0.8 °C3 February 1998	20.0 °C	645 mm	104	0
1997	34.2 °C4 June 1997	-1.2 °C14 December 1997	19.1 °C	599 mm	50	1
1996	35.4 °C29 May 1996	3.0 °C14 January 1996	19.4 °C	744 mm	54	0
1995	35.2 °C15 May 1995	4.3 °C26 November 1995	19.7 °C	683 mm	51	0
1994	35.6 °C9 May 1994	3.4 °C6 January 1994	19.8 °C	687 mm	69	0
1993	36.1 °C5 June 1993	5.0 °C12 February 1993	19.1 °C	727 mm	48	0
1992	34.9 °C26 June 1992	2.4 °C5 February 1992	18.3 °C	861 mm	39	0
1991	35.8 °C21 May 1991	4.2 °C14 January 1991	19.1 °C	828 mm	83	0
1990	34.5 °C1 June 1990	4.7 °C8 January 1990	19.0 °C	818 mm	49	0
1989	36.3 °C19 May 1989	2.8 °C24 December 1989	19.3 °C	579 mm	75	0
1988	35.4 °C27 April 1988	2.2 °C26 January 1988	19.3 °C	647 mm	68	0
1987	33.5 °C28 May 1987	3.1 °C23 January 1987	19.2 °C	494 mm	54	0
1986	36.8 °C12 May 1986	2.7 °C14 January 1986	18.8 °C	737 mm	55	0
1985	34.9 °C13 May 1985	0.6 °C7 January 1985	18.7 °C	692 mm	34	0
1984	34.8 °C30 April 1984	4.9 °C12 January 1984	18.8 °C	707 mm	54	0
1983	37.3 °C1 May 1983	1.2 °C23 January 1983	18.9 °C	664 mm	64	0
1982	35.9 °C4 June 1982	4.2 °C18 December 1982	19.7 °C	531 mm	99	0
1981	35.2 °C9 June 1981	0.7 °C24 January 1981	18.9 °C	769 mm	48	0
1980	35.4 °C18 May 1980	-0.3 °C27 January 1980	19.2 °C	660 mm	72	1
1979	33.5 °C23 June 1979	3.5 °C3 January 1979	19.5 °C	455 mm	85	0
1978	35.0 °C18 April 1978	4.0 °C9 February 1978	19.0 °C	645 mm	60	0
1977	33.8 °C7 May 1977	2.8 °C22 December 1977	18.9 °C	627 mm	47	0
1976	33.8 °C25 May 1976	-0.6 °C25 February 1976	18.5 °C	563 mm	46	1
1975	34.0 °C19 April 1975	2.3 °C29 December 1975	18.4 °C	624 mm	52	0
1974	34.0 °C16 May 1974	3.6 °C26 November 1974	18.3 °C	589 mm	41	0
1973	35.2 °C26 May 1973	2.1 °C30 January 1973	18.3 °C	776 mm	48	0
1972	34.0 °C22 May 1972	2.9 °C22 December 1972	18.8 °C	451 mm	51	0
1971	34.0 °C30 April 1971	2.8 °C8 February 1971	18.1 °C	579 mm	39	0
1970	33.4 °C25 April 1970	2.1 °C14 January 1970	18.2 °C	512 mm	55	0
1969	35.0 °C8 June 1969	3.2 °C22 November 1969	18.9 °C	349 mm	61	0
1968	32.4 °C8 June 1968	3.6 °C8 February 1968	18.0 °C	482 mm	30	0
1967	34.3 °C9 May 1967	1.3 °C11 January 1967	17.9 °C	713 mm	32	0
1966	34.1 °C13 May 1966	1.7 °C30 January 1966	17.7 °C	543 mm	33	0
1965	34.3 °C27 May 1965	2.6 °C18 January 1965	18.1 °C	575 mm	53	0
1964	34.4 °C1 May 1964	1.9 °C14 January 1964	18.2 °C	516 mm	43	0
1963	34.3 °C23 April 1963	0.6 °C26 December 1963	17.9 °C	651 mm	38	0
1962	34.4 °C29 May 1962	2.7 °C6 January 1962	18.6 °C	462 mm	45	0
1961	34.3 °C14 May 1961	4.1 °C12 February 1961	18.3 °C	464 mm	50	0
1960	33.5 °C2 June 1960	0.8 °C14 February 1960	18.5 °C	422 mm	59	0
1959	32.9 °C28 April 1959	3.6 °C11 January 1959	17.2 °C	807 mm	16	0
1958	34.1 °C29 April 1958	1.7 °C25 January 1958	17.8 °C	725 mm	42	0
1957	34.1 °C24 May 1957	2.6 °C12 December 1957	19.2 °C	265 mm	86	0
1956	32.7 °C7 May 1956	-0.6 °C13 January 1956	18.2 °C	375 mm	42	1
1955	34.5 °C21 May 1955	-0.3 °C24 January 1955	18.1 °C	551 mm	57	1
1954	34.4 °C3 June 1954	2.8 °C21 December 1954	18.3 °C	443 mm	30	0
1953	34.3 °C21 May 1953	2.0 °C11 November 1953	18.1 °C	501 mm	57	0
1952	33.5 °C24 May 1952	3.8 °C5 February 1952	18.0 °C	547 mm	34	0
1951	32.7 °C22 April 1951	2.2 °C3 February 1951	18.7 °C	536 mm	37	0
1950	33.4 °C4 May 1950	1.9 °C14 February 1950	18.2 °C	439 mm	42	0
1949	33.8 °C21 May 1949	3.7 °C5 November 1949	18.3 °C	486 mm	32	0
1948	33.5 °C2 May 1948	3.2 °C15 January 1948	17.6 °C	728 mm	41	0
1947	32.0 °C1 May 1947	2.1 °C3 January 1947	17.2 °C	771 mm	19	0
1946	35.6 °C20 May 1946	3.0 °C24 January 1946	18.2 °C	498 mm	46	0
1945	32.9 °C4 April 1945	3.9 °C15 January 1945	18.0 °C	503 mm	38	0
1944	33.4 °C4 June 1944	3.7 °C10 January 1944	17.6 °C	608 mm	44	0
1943	33.4 °C16 May 1943	3.8 °C1 January 1943	17.2 °C	591 mm	25	0
1942	32.3 °C18 May 1942	2.9 °C29 December 1942	17.5 °C	541 mm	24	0
1941	32.5 °C8 May 1941	1.4 °C10 February 1941	17.2 °C	744 mm	17	0
1940	33.0 °C1 May 1940	-1.4 °C18 February 1940	17.3 °C	517 mm	22	1

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

28.4 °C

+1.8 °C

Hot days (≥ 30 °C)

111 d/yr

+50

Frost days (< 0 °C)

0 d/yr

Annual rainfall

854 mm

+228 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	25.4 °C	+2.1 °C	10 mm	-4 mm
Feb	28.6 °C	+3.3 °C	4 mm	-3 mm
Mar	30.8 °C	+2.7 °C	0 mm	-7 mm
Apr	32.0 °C	+1.8 °C	0 mm	-9 mm
May	32.8 °C	+1.7 °C	41 mm	+8 mm
Jun	27.8 °C	-0.9 °C	248 mm	+123 mm
Jul	26.5 °C	+0.4 °C	165 mm	+17 mm
Aug	27.3 °C	+1.1 °C	180 mm	+53 mm
Sep	27.4 °C	+1.8 °C	150 mm	+47 mm
Oct	28.5 °C	+2.7 °C	44 mm	+5 mm
Nov	28.2 °C	+3.0 °C	0 mm	-9 mm
Dec	25.9 °C	+2.3 °C	13 mm	+7 mm

The year's extremes

Hottest day

36.8 °C

16 May 2025

Coldest day

4.9 °C

22 Jan 2025

Wettest day

32.8 mm

25 Aug 2025

Windiest day

24.0 km/h

10 Nov 2025

Strongest gust

59.8 km/h

10 Nov 2025

Hottest feels-like

37.1 °C

17 May 2025

Coldest feels-like

1.8 °C

22 Jan 2025

Sunniest day

12.8 h

7 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 Pénjamo?

Pénjamo has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 18.9 °C and it receives 626 mm of precipitation per year.

What is the hottest day ever recorded in Pénjamo?

The hottest day measured in Pénjamo between 1940 and 2025 was 24 May 2024, reaching 38.3 °C.

What is the coldest day in Pénjamo?

The coldest day measured in Pénjamo between 1940 and 2025 was 18 February 1940, at -1.4 °C.

Does it snow in Pénjamo?

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

Has the climate of Pénjamo warmed?

Yes: Pénjamo warmed by +2.6 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Pénjamo?

The wettest day measured in Pénjamo between 1940 and 2025 was 1 January 1947, with 67 mm of rain in 24 hours.

What was the windiest day in Pénjamo?

The windiest day measured in Pénjamo between 1940 and 2025 was 4 March 1983, with winds reaching 32.4 km/h.

What is the warmest month in Pénjamo?

The warmest month in Pénjamo is May (22.8 °C on average); the coldest is January (14.9 °C).

How much does it rain in Pénjamo?

Pénjamo receives on average 626 mm of precipitation per year, spread over about 91 rainy days.

Is it sunny in Pénjamo?

Pénjamo gets on average 11.0 hours of sunshine per day, roughly 4,015 hours per year over 1940-2025.

What is the biggest single-day snowfall in Pénjamo?

The heaviest 24-hour snowfall measured in Pénjamo between 1940 and 2025 was 11 January 1967, with 2.7 cm.

Are there tropical nights in Pénjamo?

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

What was the most extreme apparent temperature in Pénjamo?

In Pénjamo, between 1940 and 2025, the highest apparent temperature reached 38.7 °C on 25 May 2024, and the lowest was -5.6 °C on 14 December 1997.

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