Ciudad Fernández climate — normals and trends

Q: What is the climate of Ciudad Fernández?

Ciudad Fernández has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 19.9 °C and it receives 664 mm of precipitation per year.

Q: What is the hottest day ever recorded in Ciudad Fernández?

The hottest day measured in Ciudad Fernández between 1940 and 2025 was 9 May 2024, reaching 42.5 °C.

Q: What is the coldest day in Ciudad Fernández?

The coldest day measured in Ciudad Fernández between 1940 and 2025 was 11 January 1962, at -3.7 °C.

Q: Does it snow in Ciudad Fernández?

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

Q: Has the climate of Ciudad Fernández warmed?

Yes: Ciudad Fernández warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Ciudad Fernández?

The wettest day measured in Ciudad Fernández between 1940 and 2025 was 8 August 1990, with 153 mm of rain in 24 hours.

Q: What was the windiest day in Ciudad Fernández?

The windiest day measured in Ciudad Fernández between 1940 and 2025 was 4 May 1944, with winds reaching 36.4 km/h.

Q: What is the warmest month in Ciudad Fernández?

The warmest month in Ciudad Fernández is May (23.6 °C on average); the coldest is January (14.6 °C).

Q: How much does it rain in Ciudad Fernández?

Ciudad Fernández receives on average 664 mm of precipitation per year, spread over about 123 rainy days.

Q: Is it sunny in Ciudad Fernández?

Ciudad Fernández gets on average 10.4 hours of sunshine per day, roughly 3,796 hours per year over 1940-2025.

Ciudad Fernández (Mexico) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 19.9 °C and it receives 664 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 (23.6 °C on average) and the coldest is January (14.6 °C). Rainfall peaks in September.

Ciudad Fernández averages 0 frost days, 83 hot days (≥ 30 °C) and 123 rainy days per year.

Ciudad Fernández has warmed by +2.1 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.

The hottest day of the period reached 42.5 °C (on 9 May 2024) and the coldest -3.7 °C (on 11 January 1962).

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

Ciudad FernándezSan Luis Potosí

coords: 21.94°, -100.01°
period: 1940–2025 · 86 yrs

BShHot semi-aridWarmest monthMayColdest monthJanuaryWettest monthSeptemberDriest monthDecember

Mean daily temperature

19.9°C

Average daily high

26.3°C

Average daily low

15.1°C

Annual rainfall

664mm

Sunshine / day

10.4h

Mean relative humidity

71%

Average peak wind

15.8km/h

Seasonal range

9.0°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

83 d/yr

Rainy days (≥ 1 mm)

123 d/yr

Annual snowfall

0.2 cm

Average feels-like high

26.8 °C

Average feels-like low

15.7 °C

Average peak gust

34.0 km/h

Tropical nights (≥ 20 °C)

25 d/yr

Solar radiation

19.5 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.1 °C

since 1940

+0.2 °C per decade · r² = 0.63 · 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

42.5 °C

9 May 2024

Coldest day

-3.7 °C

11 January 1962

Wettest day

153 mm

8 August 1990

Windiest day

36.4 km/h

4 May 1944

Strongest gust

84.6 km/h

2 September 1977

Hottest feels-like

43.3 °C

26 May 2024

Coldest feels-like

-8.0 °C

11 January 1962

Snowiest day

13.8 cm

11 January 1967

Sunniest day

13.0 h

24 June 1953

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	39.3 °C2 April 2025	0.7 °C22 January 2025	21.4 °C	715 mm	143	0
2024	42.5 °C9 May 2024	5.0 °C17 January 2024	22.4 °C	708 mm	156	0
2023	39.6 °C14 June 2023	4.6 °C14 January 2023	21.8 °C	396 mm	189	0
2022	39.2 °C8 May 2022	2.5 °C5 February 2022	20.8 °C	497 mm	135	0
2021	38.6 °C3 May 2021	3.1 °C20 February 2021	21.1 °C	750 mm	124	0
2020	38.8 °C22 April 2020	3.5 °C26 December 2020	21.5 °C	460 mm	157	0
2019	38.3 °C21 May 2019	4.0 °C19 December 2019	21.5 °C	517 mm	177	0
2018	38.2 °C30 May 2018	0.9 °C15 November 2018	20.7 °C	649 mm	132	0
2017	38.5 °C29 April 2017	1.4 °C10 December 2017	20.8 °C	583 mm	128	0
2016	37.2 °C31 March 2016	2.8 °C23 January 2016	20.5 °C	750 mm	120	0
2015	34.3 °C19 August 2015	6.4 °C25 January 2015	20.2 °C	778 mm	78	0
2014	36.8 °C29 April 2014	3.0 °C16 January 2014	19.8 °C	766 mm	95	0
2013	39.2 °C18 April 2013	3.2 °C3 March 2013	20.3 °C	915 mm	116	0
2012	37.7 °C31 May 2012	5.5 °C4 January 2012	20.6 °C	605 mm	104	0
2011	38.9 °C26 April 2011	3.0 °C5 February 2011	20.5 °C	579 mm	111	0
2010	37.1 °C30 April 2010	1.2 °C9 January 2010	19.3 °C	1,025 mm	68	0
2009	37.0 °C6 May 2009	3.7 °C14 January 2009	20.8 °C	496 mm	148	0
2008	37.9 °C13 May 2008	3.1 °C3 January 2008	20.2 °C	915 mm	97	0
2007	37.5 °C17 April 2007	4.8 °C17 February 2007	20.2 °C	786 mm	83	0
2006	37.2 °C10 May 2006	2.1 °C18 January 2006	20.6 °C	559 mm	103	0
2005	37.7 °C29 April 2005	5.4 °C15 January 2005	20.5 °C	578 mm	97	0
2004	36.8 °C29 May 2004	-0.1 °C26 December 2004	19.9 °C	565 mm	81	1
2003	39.7 °C5 May 2003	2.2 °C21 December 2003	20.5 °C	679 mm	112	0
2002	38.7 °C2 May 2002	1.4 °C4 March 2002	20.1 °C	531 mm	99	0
2001	37.8 °C21 May 2001	3.1 °C20 January 2001	20.0 °C	550 mm	96	0
2000	35.9 °C23 April 2000	2.5 °C20 December 2000	20.4 °C	429 mm	121	0
1999	38.6 °C4 May 1999	3.7 °C14 February 1999	20.0 °C	547 mm	100	0
1998	39.7 °C16 April 1998	5.4 °C4 February 1998	20.7 °C	709 mm	108	0
1997	38.5 °C13 June 1997	-0.9 °C14 December 1997	20.0 °C	779 mm	89	4
1996	35.9 °C27 May 1996	0.7 °C19 December 1996	20.1 °C	737 mm	87	0
1995	38.8 °C6 June 1995	6.1 °C10 March 1995	20.8 °C	574 mm	76	0
1994	36.0 °C26 May 1994	3.3 °C9 January 1994	20.5 °C	487 mm	99	0
1993	36.0 °C4 June 1993	3.0 °C14 March 1993	19.9 °C	706 mm	66	0
1992	35.3 °C30 June 1992	3.0 °C28 November 1992	19.5 °C	854 mm	45	0
1991	37.9 °C27 April 1991	5.9 °C5 December 1991	20.1 °C	924 mm	90	0
1990	37.7 °C28 May 1990	1.8 °C9 December 1990	20.0 °C	771 mm	63	0
1989	37.6 °C7 June 1989	-0.4 °C24 December 1989	19.9 °C	624 mm	84	1
1988	36.0 °C8 May 1988	0.6 °C26 January 1988	19.6 °C	706 mm	48	0
1987	33.7 °C3 May 1987	3.6 °C31 March 1987	19.3 °C	566 mm	52	0
1986	36.2 °C12 April 1986	1.2 °C14 January 1986	19.9 °C	823 mm	61	0
1985	35.0 °C11 June 1985	1.4 °C6 January 1985	19.8 °C	812 mm	39	0
1984	38.1 °C7 May 1984	3.4 °C1 January 1984	19.6 °C	835 mm	56	0
1983	39.1 °C2 May 1983	-0.1 °C30 December 1983	20.0 °C	672 mm	73	1
1982	37.9 °C5 April 1982	2.3 °C14 January 1982	20.6 °C	569 mm	109	0
1981	35.5 °C18 May 1981	4.5 °C24 January 1981	19.8 °C	1,149 mm	54	0
1980	37.4 °C16 May 1980	3.5 °C3 March 1980	20.5 °C	491 mm	123	0
1979	34.5 °C2 April 1979	-0.4 °C2 January 1979	19.5 °C	543 mm	41	1
1978	37.4 °C7 May 1978	3.2 °C10 December 1978	19.9 °C	792 mm	76	0
1977	36.5 °C18 March 1977	1.3 °C22 December 1977	19.9 °C	595 mm	74	0
1976	33.9 °C31 May 1976	1.2 °C25 February 1976	18.7 °C	795 mm	26	0
1975	36.6 °C23 March 1975	0.3 °C14 January 1975	19.5 °C	774 mm	55	0
1974	37.7 °C7 June 1974	2.9 °C9 February 1974	19.5 °C	777 mm	50	0
1973	38.7 °C27 May 1973	-0.3 °C30 January 1973	19.4 °C	941 mm	63	1
1972	36.4 °C14 April 1972	3.3 °C4 February 1972	19.7 °C	696 mm	30	0
1971	37.2 °C27 April 1971	3.8 °C6 January 1971	19.7 °C	686 mm	56	0
1970	35.9 °C27 April 1970	0.7 °C8 January 1970	18.8 °C	683 mm	36	0
1969	35.5 °C7 May 1969	2.4 °C21 November 1969	19.5 °C	767 mm	54	0
1968	34.2 °C27 May 1968	3.7 °C8 February 1968	19.0 °C	684 mm	36	0
1967	36.9 °C1 May 1967	-1.4 °C11 January 1967	19.2 °C	980 mm	55	2
1966	35.1 °C18 May 1966	1.0 °C13 December 1966	18.4 °C	639 mm	58	0
1965	36.4 °C11 April 1965	2.1 °C26 February 1965	19.5 °C	501 mm	83	0
1964	39.7 °C1 May 1964	-0.3 °C14 January 1964	19.5 °C	507 mm	72	1
1963	36.8 °C11 April 1963	2.0 °C14 February 1963	19.3 °C	497 mm	68	0
1962	36.6 °C30 April 1962	-3.7 °C11 January 1962	19.7 °C	450 mm	98	3
1961	37.0 °C5 May 1961	4.5 °C10 January 1961	19.4 °C	477 mm	73	0
1960	37.6 °C29 April 1960	0.4 °C14 February 1960	19.5 °C	440 mm	94	0
1959	34.7 °C10 May 1959	2.8 °C29 November 1959	18.8 °C	706 mm	45	0
1958	37.5 °C24 April 1958	2.2 °C9 January 1958	19.0 °C	788 mm	75	0
1957	37.7 °C21 May 1957	0.1 °C12 December 1957	20.0 °C	469 mm	112	0
1956	37.6 °C14 April 1956	0.1 °C13 January 1956	19.1 °C	446 mm	62	0
1955	39.3 °C26 May 1955	0.7 °C12 February 1955	19.2 °C	758 mm	88	0
1954	37.8 °C24 March 1954	3.1 °C21 December 1954	19.5 °C	578 mm	82	0
1953	39.5 °C17 May 1953	1.0 °C24 December 1953	19.7 °C	536 mm	99	0
1952	36.7 °C10 May 1952	2.5 °C27 February 1952	19.0 °C	596 mm	69	0
1951	35.4 °C10 May 1951	-1.8 °C3 February 1951	19.6 °C	603 mm	61	3
1950	36.1 °C14 May 1950	2.1 °C7 December 1950	19.9 °C	549 mm	58	0
1949	35.8 °C24 June 1949	3.2 °C30 January 1949	19.6 °C	572 mm	39	0
1948	38.0 °C2 May 1948	3.3 °C18 January 1948	19.1 °C	762 mm	55	0
1947	36.9 °C4 April 1947	-1.1 °C5 January 1947	18.9 °C	671 mm	56	2
1946	37.3 °C19 May 1946	3.5 °C25 January 1946	19.5 °C	635 mm	70	0
1945	36.9 °C15 April 1945	3.6 °C5 December 1945	19.8 °C	590 mm	76	0
1944	36.4 °C25 May 1944	2.2 °C10 January 1944	19.0 °C	835 mm	65	0
1943	35.3 °C10 May 1943	3.0 °C20 January 1943	18.7 °C	589 mm	79	0
1942	35.8 °C14 May 1942	3.3 °C9 March 1942	18.5 °C	607 mm	40	0
1941	35.5 °C19 April 1941	3.8 °C20 January 1941	18.7 °C	916 mm	40	0
1940	34.5 °C30 April 1940	2.6 °C20 January 1940	19.0 °C	574 mm	53	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

+2.2 °C

Hot days (≥ 30 °C)

143 d/yr

+60

Frost days (< 0 °C)

0 d/yr

Annual rainfall

715 mm

+51 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	21.4 °C	+0.1 °C	10 mm	-12 mm
Feb	27.0 °C	+3.3 °C	12 mm	-8 mm
Mar	31.5 °C	+4.6 °C	5 mm	-19 mm
Apr	31.7 °C	+2.2 °C	8 mm	-30 mm
May	33.4 °C	+2.9 °C	79 mm	+24 mm
Jun	28.4 °C	-0.9 °C	183 mm	+91 mm
Jul	28.7 °C	+0.6 °C	98 mm	+7 mm
Aug	31.6 °C	+3.1 °C	59 mm	-24 mm
Sep	28.8 °C	+2.0 °C	138 mm	+11 mm
Oct	27.8 °C	+2.6 °C	84 mm	+17 mm
Nov	26.9 °C	+3.5 °C	14 mm	-12 mm
Dec	24.2 °C	+2.4 °C	25 mm	+7 mm

The year's extremes

Hottest day

39.3 °C

2 Apr 2025

Coldest day

0.7 °C

22 Jan 2025

Wettest day

34.9 mm

9 Oct 2025

Windiest day

29.3 km/h

7 May 2025

Strongest gust

57.2 km/h

7 May 2025

Hottest feels-like

41.5 °C

19 May 2025

Coldest feels-like

-2.3 °C

22 Jan 2025

Sunniest day

13.0 h

19 May 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 Ciudad Fernández?

Ciudad Fernández has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 19.9 °C and it receives 664 mm of precipitation per year.

What is the hottest day ever recorded in Ciudad Fernández?

The hottest day measured in Ciudad Fernández between 1940 and 2025 was 9 May 2024, reaching 42.5 °C.

What is the coldest day in Ciudad Fernández?

The coldest day measured in Ciudad Fernández between 1940 and 2025 was 11 January 1962, at -3.7 °C.

Does it snow in Ciudad Fernández?

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

Has the climate of Ciudad Fernández warmed?

Yes: Ciudad Fernández warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Ciudad Fernández?

The wettest day measured in Ciudad Fernández between 1940 and 2025 was 8 August 1990, with 153 mm of rain in 24 hours.

What was the windiest day in Ciudad Fernández?

The windiest day measured in Ciudad Fernández between 1940 and 2025 was 4 May 1944, with winds reaching 36.4 km/h.

What is the warmest month in Ciudad Fernández?

The warmest month in Ciudad Fernández is May (23.6 °C on average); the coldest is January (14.6 °C).

How much does it rain in Ciudad Fernández?

Ciudad Fernández receives on average 664 mm of precipitation per year, spread over about 123 rainy days.

Is it sunny in Ciudad Fernández?

Ciudad Fernández gets on average 10.4 hours of sunshine per day, roughly 3,796 hours per year over 1940-2025.

What is the biggest single-day snowfall in Ciudad Fernández?

The heaviest 24-hour snowfall measured in Ciudad Fernández between 1940 and 2025 was 11 January 1967, with 13.8 cm.

Are there tropical nights in Ciudad Fernández?

Yes: Ciudad Fernández has on average 25 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Ciudad Fernández?

In Ciudad Fernández, between 1940 and 2025, the highest apparent temperature reached 43.3 °C on 26 May 2024, and the lowest was -8.0 °C on 11 January 1962.

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