Frontera climate — normals and trends
Frontera (Mexico) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 21.8 °C and it receives 404 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 July (28.8 °C on average) and the coldest is January (12.7 °C). Rainfall peaks in September.
Frontera averages 3 frost days, 165 hot days (≥ 30 °C) and 69 rainy days per year.
Frontera has warmed by +2.2 °C between 1940 and 2025, or +0.26 °C per decade. This trend is statistically significant.
The hottest day of the period reached 45.0 °C (on 28 June 1957) and the coldest -9.3 °C (on 25 December 1983).
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
FronteraCoahuila
- coords
- 26.93°, -101.45°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
21.8°C
Average daily high
27.9°C
Average daily low
16.2°C
Annual rainfall
404mm
Sunshine / day
10.6h
Mean relative humidity
56%
Average peak wind
13.3km/h
Seasonal range
16.1°C
Frost days (< 0 °C)
3 d/yr
Hot days (≥ 30 °C)
165 d/yr
Rainy days (≥ 1 mm)
69 d/yr
Annual snowfall
1.0 cm
Average feels-like high
28.1 °C
Average feels-like low
16.2 °C
Average peak gust
29.7 km/h
Tropical nights (≥ 20 °C)
145 d/yr
Solar radiation
20.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.2 °C
since 1940
+0.3 °C per decade · r² = 0.40 · 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
45.0 °C
28 June 1957
Coldest day
-9.3 °C
25 December 1983
Wettest day
164 mm
22 September 1967
Windiest day
36.0 km/h
18 March 2008
Strongest gust
81.4 km/h
10 August 1980
Hottest feels-like
45.5 °C
30 June 1992
Coldest feels-like
-14.0 °C
11 January 1962
Snowiest day
5.7 cm
12 February 1960
Sunniest day
13.7 h
27 June 1950
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 | 17.3 °C | -2.0 °C | 6 mm | -10 mm |
| Feb | 25.6 °C | +3.4 °C | 4 mm | -10 mm |
| Mar | 31.2 °C | +4.8 °C | 5 mm | -8 mm |
| Apr | 33.9 °C | +3.4 °C | 7 mm | -15 mm |
| May | 34.3 °C | +1.4 °C | 47 mm | +9 mm |
| Jun | 36.7 °C | +2.2 °C | 23 mm | -22 mm |
| Jul | 33.6 °C | -0.6 °C | 88 mm | +37 mm |
| Aug | 36.4 °C | +2.5 °C | 17 mm | -34 mm |
| Sep | 32.8 °C | +2.4 °C | 36 mm | -52 mm |
| Oct | 31.7 °C | +4.4 °C | 5 mm | -31 mm |
| Nov | 28.0 °C | +4.9 °C | 5 mm | -11 mm |
| Dec | 24.3 °C | +4.2 °C | 8 mm | -6 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 Frontera?
Frontera has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 21.8 °C and it receives 404 mm of precipitation per year.
What is the hottest day ever recorded in Frontera?
The hottest day measured in Frontera between 1940 and 2025 was 28 June 1957, reaching 45.0 °C.
What is the coldest day in Frontera?
The coldest day measured in Frontera between 1940 and 2025 was 25 December 1983, at -9.3 °C.
Does it snow in Frontera?
Almost never: Frontera sees virtually no snow, with about 3 frost days per year.
Has the climate of Frontera warmed?
Yes: Frontera warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Frontera?
The wettest day measured in Frontera between 1940 and 2025 was 22 September 1967, with 164 mm of rain in 24 hours.
What was the windiest day in Frontera?
The windiest day measured in Frontera between 1940 and 2025 was 18 March 2008, with winds reaching 36.0 km/h.
What is the warmest month in Frontera?
The warmest month in Frontera is July (28.8 °C on average); the coldest is January (12.7 °C).
How much does it rain in Frontera?
Frontera receives on average 404 mm of precipitation per year, spread over about 69 rainy days.
Is it sunny in Frontera?
Frontera gets on average 10.6 hours of sunshine per day, roughly 3,869 hours per year over 1940-2025.
What is the biggest single-day snowfall in Frontera?
The heaviest 24-hour snowfall measured in Frontera between 1940 and 2025 was 12 February 1960, with 5.7 cm.
Are there tropical nights in Frontera?
Yes: Frontera has on average 145 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Frontera?
In Frontera, between 1940 and 2025, the highest apparent temperature reached 45.5 °C on 30 June 1992, and the lowest was -14.0 °C on 11 January 1962.
Compare Frontera with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Frontera