Weather in Rosario in September
In an average September, Rosario sees a daily high around 21°C and a low around 10°C, based on 1980–2026 of local climate records.
| Average high | 21°C |
|---|---|
| Typical high range | 15°C to 26°C |
| Average low | 10°C |
| Typical low range | 4°C to 15°C |
| Average daily precipitation | 3 mm |
September records
The most extreme September on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total September accumulation.
High
Highest
37°C
2024-09-30
Lowest
8°C
1981-09-14
Low
Highest
24°C
2013-09-11
Lowest
-1°C
1983-09-08
Feels-like
Highest
49°C
2024-09-30
Lowest
-6°C
2019-09-03
Humidity
Highest
18.9 g/m³
2018-09-22
Lowest
3.5 g/m³
1995-09-19
Wind
Highest
42 km/h
2025-09-27
Lowest
8 km/h
1980-09-20
Gust
Highest
78 km/h
2025-09-27
Lowest
14 km/h
2015-09-04
Precip
Wettest
160 mm
2014
Driest
6 mm
2024
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