Rosario Weather in May
In May, Rosario averages a high of 21°C (69°F) and a low of 9°C (49°F), based on 55 years of historical weather data from ROSARIO.
21°C
Average high
69°F
9°C
Average low
49°F
33°C
Record high
91°F · 1997
-6°C
Record low
22°F · 2022
What to Expect in Rosario in May
Typical May days in Rosario reach 21°C (69°F) during the afternoon and cool to around 9°C (49°F) overnight. On average, measurable rain falls on about 27% of days this month. Over the past 55 years, May temperatures in Rosario have ranged from a record high of 33°C (1997) down to a record low of -6°C (2022).
For a day-by-day look or other months, see the full Rosario weather history.