Saltillo climate — normals and trends
Saltillo (Mexico) has a cold semi-arid climate (BSk) under the Köppen-Geiger classification. Its mean annual temperature is 17.0 °C and it receives 581 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 June (21.9 °C on average) and the coldest is January (10.7 °C). Rainfall peaks in September.
Saltillo averages 5 frost days, 23 hot days (≥ 30 °C) and 104 rainy days per year.
Saltillo has warmed by +2.1 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.
The number of frost days there went from about 7 to 3 per year over the period.
The hottest day of the period reached 37.1 °C (on 8 May 2003) and the coldest -9.1 °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
SaltilloCoahuila
- coords
- 25.43°, -100.98°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
17.0°C
Average daily high
23.1°C
Average daily low
11.6°C
Annual rainfall
581mm
Sunshine / day
11.0h
Mean relative humidity
61%
Average peak wind
14.4km/h
Seasonal range
11.2°C
Frost days (< 0 °C)
5 d/yr
Hot days (≥ 30 °C)
23 d/yr
Rainy days (≥ 1 mm)
104 d/yr
Annual snowfall
2.1 cm
Average feels-like high
22.2 °C
Average feels-like low
10.3 °C
Average peak gust
37.1 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
21.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.1 °C
since 1940
+0.2 °C per decade · r² = 0.53 · 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
37.1 °C
8 May 2003
Coldest day
-9.1 °C
11 January 1962
Wettest day
142 mm
4 September 2019
Windiest day
41.4 km/h
4 March 1983
Strongest gust
96.8 km/h
4 March 1983
Hottest feels-like
37.5 °C
19 June 2023
Coldest feels-like
-13.5 °C
11 January 1962
Snowiest day
8.5 cm
9 January 1967
Sunniest day
13.5 h
28 June 1957
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 | 17.2 °C | 0.0 °C | 17 mm | -7 mm |
| Feb | 22.7 °C | +3.4 °C | 3 mm | -17 mm |
| Mar | 26.0 °C | +3.5 °C | 10 mm | -10 mm |
| Apr | 28.2 °C | +2.7 °C | 11 mm | -23 mm |
| May | 28.6 °C | +1.3 °C | 61 mm | +12 mm |
| Jun | 28.1 °C | +0.5 °C | 53 mm | -14 mm |
| Jul | 26.4 °C | -0.1 °C | 135 mm | +38 mm |
| Aug | 27.1 °C | +0.9 °C | 94 mm | +2 mm |
| Sep | 25.2 °C | +1.1 °C | 75 mm | -23 mm |
| Oct | 25.2 °C | +2.7 °C | 3 mm | -40 mm |
| Nov | 23.9 °C | +3.7 °C | 2 mm | -17 mm |
| Dec | 20.9 °C | +2.8 °C | 13 mm | -8 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 Saltillo?
Saltillo has a cold semi-arid climate (Köppen BSk). Over 1940-2025, the average annual temperature is 17.0 °C and it receives 581 mm of precipitation per year.
What is the hottest day ever recorded in Saltillo?
The hottest day measured in Saltillo between 1940 and 2025 was 8 May 2003, reaching 37.1 °C.
What is the coldest day in Saltillo?
The coldest day measured in Saltillo between 1940 and 2025 was 11 January 1962, at -9.1 °C.
Does it snow in Saltillo?
Yes. Saltillo gets on average 2.1 cm of snow per year and has around 5 frost days.
Has the climate of Saltillo warmed?
Yes: Saltillo warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Saltillo?
The wettest day measured in Saltillo between 1940 and 2025 was 4 September 2019, with 142 mm of rain in 24 hours.
What was the windiest day in Saltillo?
The windiest day measured in Saltillo between 1940 and 2025 was 4 March 1983, with winds reaching 41.4 km/h.
What is the warmest month in Saltillo?
The warmest month in Saltillo is June (21.9 °C on average); the coldest is January (10.7 °C).
How much does it rain in Saltillo?
Saltillo receives on average 581 mm of precipitation per year, spread over about 104 rainy days.
Is it sunny in Saltillo?
Saltillo 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 Saltillo?
The heaviest 24-hour snowfall measured in Saltillo between 1940 and 2025 was 9 January 1967, with 8.5 cm.
Are there tropical nights in Saltillo?
Yes: Saltillo has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Saltillo?
In Saltillo, between 1940 and 2025, the highest apparent temperature reached 37.5 °C on 19 June 2023, and the lowest was -13.5 °C on 11 January 1962.
Compare Saltillo with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Saltillo