Rosario Weather in January
In January, Rosario averages a high of 32°C (89°F) and a low of 19°C (66°F), based on 55 years of historical weather data from ROSARIO.
32°C
Average high
89°F
19°C
Average low
66°F
42°C
Record high
108°F · 2022
2°C
Record low
35°F · 1993
What to Expect in Rosario in January
Typical January days in Rosario reach 32°C (89°F) during the afternoon and cool to around 19°C (66°F) overnight. On average, measurable rain falls on about 40% of days this month. Over the past 55 years, January temperatures in Rosario have ranged from a record high of 42°C (2022) down to a record low of 2°C (1993).
For a day-by-day look or other months, see the full Rosario weather history.