Ciudad Valles climate — normals and trends
Ciudad Valles (Mexico) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 24.2 °C and it receives 1,102 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 (28.2 °C on average) and the coldest is January (18.6 °C). Rainfall peaks in September.
Ciudad Valles averages 0 frost days, 187 hot days (≥ 30 °C) and 148 rainy days per year.
Ciudad Valles has warmed by +2.1 °C between 1940 and 2025, or +0.25 °C per decade. This trend is statistically significant.
The hottest day of the period reached 49.5 °C (on 9 May 2024) and the coldest 0.8 °C (on 24 December 1989).
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 VallesSan Luis Potosí
- coords
- 22.00°, -99.01°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
24.2°C
Average daily high
29.5°C
Average daily low
19.7°C
Annual rainfall
1,102mm
Sunshine / day
10.0h
Mean relative humidity
73%
Average peak wind
10.5km/h
Seasonal range
9.6°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
187 d/yr
Rainy days (≥ 1 mm)
148 d/yr
Annual snowfall
0.0 cm
Average feels-like high
32.9 °C
Average feels-like low
22.0 °C
Average peak gust
26.3 km/h
Tropical nights (≥ 20 °C)
206 d/yr
Solar radiation
18.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.1 °C
since 1940
+0.3 °C per decade · r² = 0.54 · p = < 0.001
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
49.5 °C
9 May 2024
Coldest day
0.8 °C
24 December 1989
Wettest day
183 mm
23 September 1967
Windiest day
34.6 km/h
23 August 1996
Strongest gust
100.1 km/h
22 August 1951
Hottest feels-like
52.9 °C
9 May 2024
Coldest feels-like
-3.5 °C
11 January 1962
Snowiest day
0.1 cm
2 February 1951
Sunniest day
13.0 h
13 May 1940
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?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 23.3 °C | -0.4 °C | 19 mm | -12 mm |
| Feb | 28.9 °C | +2.8 °C | 10 mm | -18 mm |
| Mar | 35.1 °C | +5.5 °C | 6 mm | -27 mm |
| Apr | 35.9 °C | +3.2 °C | 18 mm | -31 mm |
| May | 37.7 °C | +3.7 °C | 80 mm | -3 mm |
| Jun | 32.9 °C | -0.4 °C | 371 mm | +201 mm |
| Jul | 32.1 °C | +0.1 °C | 117 mm | -45 mm |
| Aug | 34.6 °C | +2.0 °C | 98 mm | -55 mm |
| Sep | 33.1 °C | +2.0 °C | 249 mm | +34 mm |
| Oct | 30.7 °C | +1.9 °C | 135 mm | +28 mm |
| Nov | 29.2 °C | +3.0 °C | 27 mm | -17 mm |
| Dec | 26.8 °C | +2.5 °C | 52 mm | +23 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Ciudad Valles?
Ciudad Valles has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 24.2 °C and it receives 1,102 mm of precipitation per year.
What is the hottest day ever recorded in Ciudad Valles?
The hottest day measured in Ciudad Valles between 1940 and 2025 was 9 May 2024, reaching 49.5 °C.
What is the coldest day in Ciudad Valles?
The coldest day measured in Ciudad Valles between 1940 and 2025 was 24 December 1989, at 0.8 °C.
Does it snow in Ciudad Valles?
Almost never: Ciudad Valles sees virtually no snow, with about 0 frost days per year.
Has the climate of Ciudad Valles warmed?
Yes: Ciudad Valles warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ciudad Valles?
The wettest day measured in Ciudad Valles between 1940 and 2025 was 23 September 1967, with 183 mm of rain in 24 hours.
What was the windiest day in Ciudad Valles?
The windiest day measured in Ciudad Valles between 1940 and 2025 was 23 August 1996, with winds reaching 34.6 km/h.
What is the warmest month in Ciudad Valles?
The warmest month in Ciudad Valles is May (28.2 °C on average); the coldest is January (18.6 °C).
How much does it rain in Ciudad Valles?
Ciudad Valles receives on average 1,102 mm of precipitation per year, spread over about 148 rainy days.
Is it sunny in Ciudad Valles?
Ciudad Valles gets on average 10.0 hours of sunshine per day, roughly 3,650 hours per year over 1940-2025.
What is the biggest single-day snowfall in Ciudad Valles?
The heaviest 24-hour snowfall measured in Ciudad Valles between 1940 and 2025 was 2 February 1951, with 0.1 cm.
Are there tropical nights in Ciudad Valles?
Yes: Ciudad Valles has on average 206 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ciudad Valles?
In Ciudad Valles, between 1940 and 2025, the highest apparent temperature reached 52.9 °C on 9 May 2024, and the lowest was -3.5 °C on 11 January 1962.
Compare Ciudad Valles with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Ciudad Valles