Río Segundo climate — normals and trends
Río Segundo (Argentina) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 17.4 °C and it receives 760 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 (24.0 °C on average) and the coldest is July (10.0 °C). Rainfall peaks in January.
Río Segundo averages 7 frost days, 59 hot days (≥ 30 °C) and 89 rainy days per year.
Río Segundo has warmed by +0.6 °C between 1940 and 2025, or +0.07 °C per decade. This trend is statistically significant.
The number of frost days there went from about 4 to 10 per year over the period.
The hottest day of the period reached 42.5 °C (on 29 December 1971) and the coldest -7.1 °C (on 30 June 2025).
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
Río SegundoCordoba
- coords
- -31.65°, -63.91°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
17.4°C
Average daily high
23.4°C
Average daily low
12.3°C
Annual rainfall
760mm
Sunshine / day
9.8h
Mean relative humidity
68%
Average peak wind
16.3km/h
Seasonal range
14.0°C
Frost days (< 0 °C)
7 d/yr
Hot days (≥ 30 °C)
59 d/yr
Rainy days (≥ 1 mm)
89 d/yr
Annual snowfall
0.1 cm
Average feels-like high
23.2 °C
Average feels-like low
11.0 °C
Average peak gust
34.9 km/h
Tropical nights (≥ 20 °C)
28 d/yr
Solar radiation
17.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.6 °C
since 1940
+0.1 °C per decade · r² = 0.13 · 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
42.5 °C
29 December 1971
Coldest day
-7.1 °C
30 June 2025
Wettest day
127 mm
25 January 2019
Windiest day
43.2 km/h
30 August 2000
Strongest gust
92.9 km/h
1 November 2016
Hottest feels-like
45.1 °C
7 February 2010
Coldest feels-like
-11.2 °C
30 June 2025
Snowiest day
2.4 cm
9 August 1975
Sunniest day
13.9 h
27 November 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 | 32.1 °C | +2.3 °C | 60 mm | -59 mm |
| Feb | 31.9 °C | +3.6 °C | 56 mm | -45 mm |
| Mar | 25.9 °C | -0.4 °C | 270 mm | +174 mm |
| Apr | 22.3 °C | -0.7 °C | 10 mm | -47 mm |
| May | 21.3 °C | +1.7 °C | 38 mm | +10 mm |
| Jun | 16.7 °C | +0.2 °C | 1 mm | -17 mm |
| Jul | 16.7 °C | +0.5 °C | 16 mm | -2 mm |
| Aug | 19.4 °C | +0.6 °C | 98 mm | +79 mm |
| Sep | 22.5 °C | +1.1 °C | 37 mm | -6 mm |
| Oct | 26.3 °C | +2.0 °C | 22 mm | -49 mm |
| Nov | 28.8 °C | +1.5 °C | 39 mm | -55 mm |
| Dec | 31.5 °C | +2.0 °C | 40 mm | -57 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 Río Segundo?
Río Segundo has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 17.4 °C and it receives 760 mm of precipitation per year.
What is the hottest day ever recorded in Río Segundo?
The hottest day measured in Río Segundo between 1940 and 2025 was 29 December 1971, reaching 42.5 °C.
What is the coldest day in Río Segundo?
The coldest day measured in Río Segundo between 1940 and 2025 was 30 June 2025, at -7.1 °C.
Does it snow in Río Segundo?
Almost never: Río Segundo sees virtually no snow, with about 7 frost days per year.
Has the climate of Río Segundo warmed?
Yes: Río Segundo warmed by +0.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Río Segundo?
The wettest day measured in Río Segundo between 1940 and 2025 was 25 January 2019, with 127 mm of rain in 24 hours.
What was the windiest day in Río Segundo?
The windiest day measured in Río Segundo between 1940 and 2025 was 30 August 2000, with winds reaching 43.2 km/h.
What is the warmest month in Río Segundo?
The warmest month in Río Segundo is January (24.0 °C on average); the coldest is July (10.0 °C).
How much does it rain in Río Segundo?
Río Segundo receives on average 760 mm of precipitation per year, spread over about 89 rainy days.
Is it sunny in Río Segundo?
Río Segundo gets on average 9.8 hours of sunshine per day, roughly 3,577 hours per year over 1940-2025.
What is the biggest single-day snowfall in Río Segundo?
The heaviest 24-hour snowfall measured in Río Segundo between 1940 and 2025 was 9 August 1975, with 2.4 cm.
Are there tropical nights in Río Segundo?
Yes: Río Segundo has on average 28 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Río Segundo?
In Río Segundo, between 1940 and 2025, the highest apparent temperature reached 45.1 °C on 7 February 2010, and the lowest was -11.2 °C on 30 June 2025.
Compare Río Segundo with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Río Segundo