Chilecito climate — normals and trends
Chilecito (Argentina) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 14.5 °C and it receives 3,879 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 January (19.5 °C on average) and the coldest is July (8.6 °C). Rainfall peaks in October.
Chilecito averages 8 frost days, 3 hot days (≥ 30 °C) and 244 rainy days per year.
Chilecito has warmed by +1.0 °C between 1940 and 2025, or +0.12 °C per decade. This trend is statistically significant.
The number of frost days there went from about 4 to 12 per year over the period.
The hottest day of the period reached 34.6 °C (on 3 December 1993) and the coldest -10.0 °C (on 19 July 2010).
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
ChilecitoLa Rioja
- coords
- -29.16°, -67.50°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
14.5°C
Average daily high
19.7°C
Average daily low
10.3°C
Annual rainfall
3,879mm
Sunshine / day
9.4h
Mean relative humidity
71%
Average peak wind
11.0km/h
Seasonal range
10.9°C
Frost days (< 0 °C)
8 d/yr
Hot days (≥ 30 °C)
3 d/yr
Rainy days (≥ 1 mm)
244 d/yr
Annual snowfall
61.7 cm
Average feels-like high
19.5 °C
Average feels-like low
8.8 °C
Average peak gust
27.9 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
16.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.0 °C
since 1940
+0.1 °C per decade · r² = 0.32 · 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
34.6 °C
3 December 1993
Coldest day
-10.0 °C
19 July 2010
Wettest day
115 mm
16 October 1986
Windiest day
23.2 km/h
5 September 1942
Strongest gust
64.1 km/h
23 January 1975
Hottest feels-like
38.6 °C
25 January 2019
Coldest feels-like
-15.6 °C
19 July 2010
Snowiest day
37.8 cm
31 May 1983
Sunniest day
13.6 h
1 January 1943
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 25.9 °C | +1.9 °C | 153 mm | -233 mm |
| Feb | 28.1 °C | +5.1 °C | 165 mm | -206 mm |
| Mar | 22.1 °C | +0.4 °C | 332 mm | -93 mm |
| Apr | 19.1 °C | -0.4 °C | 263 mm | -105 mm |
| May | 19.3 °C | +2.0 °C | 130 mm | -163 mm |
| Jun | 15.2 °C | -0.2 °C | 142 mm | -60 mm |
| Jul | 16.7 °C | +1.7 °C | 70 mm | -96 mm |
| Aug | 16.3 °C | -0.2 °C | 102 mm | -99 mm |
| Sep | 21.0 °C | +3.2 °C | 85 mm | -215 mm |
| Oct | 21.9 °C | +2.0 °C | 114 mm | -312 mm |
| Nov | 23.6 °C | +1.6 °C | 119 mm | -284 mm |
| Dec | 24.4 °C | +0.7 °C | 285 mm | -56 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 Chilecito?
Chilecito has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 14.5 °C and it receives 3,879 mm of precipitation per year.
What is the hottest day ever recorded in Chilecito?
The hottest day measured in Chilecito between 1940 and 2025 was 3 December 1993, reaching 34.6 °C.
What is the coldest day in Chilecito?
The coldest day measured in Chilecito between 1940 and 2025 was 19 July 2010, at -10.0 °C.
Does it snow in Chilecito?
Yes. Chilecito gets on average 61.7 cm of snow per year and has around 8 frost days.
Has the climate of Chilecito warmed?
Yes: Chilecito warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Chilecito?
The wettest day measured in Chilecito between 1940 and 2025 was 16 October 1986, with 115 mm of rain in 24 hours.
What was the windiest day in Chilecito?
The windiest day measured in Chilecito between 1940 and 2025 was 5 September 1942, with winds reaching 23.2 km/h.
What is the warmest month in Chilecito?
The warmest month in Chilecito is January (19.5 °C on average); the coldest is July (8.6 °C).
How much does it rain in Chilecito?
Chilecito receives on average 3,879 mm of precipitation per year, spread over about 244 rainy days.
Is it sunny in Chilecito?
Chilecito gets on average 9.4 hours of sunshine per day, roughly 3,431 hours per year over 1940-2025.
What is the biggest single-day snowfall in Chilecito?
The heaviest 24-hour snowfall measured in Chilecito between 1940 and 2025 was 31 May 1983, with 37.8 cm.
Are there tropical nights in Chilecito?
Yes: Chilecito has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Chilecito?
In Chilecito, between 1940 and 2025, the highest apparent temperature reached 38.6 °C on 25 January 2019, and the lowest was -15.6 °C on 19 July 2010.
Compare Chilecito with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Chilecito