When will the coldest moment of the week arrive, according to Argentina’s weather service

The coldest moment of the week in Buenos Aires will come around 7 a.m. on Sunday, close to sunrise, as a powerful Antarctic cold front sweeps across Argentina. Temperatures in the capital are expected to fall to about 2°C, while some parts of Greater Buenos Aires could approach or drop below 0°C.

The sharpest cooling will occur between Saturday night and the early hours of Sunday. Clearer skies, Antarctic air and southerly winds will drive the overnight fall, while wind chill will make conditions feel colder than the measured temperatures. Rural areas of Buenos Aires province could see particularly strong frosts.

Sunday should become more stable under high pressure, with more sunshine. But temperatures will remain unusually low for September, and much of the country will stay cold to bitterly cold.

The most extreme conditions are expected in Patagonia. Minimum temperatures on the Patagonian plateau could reach -13°C, with daytime highs remaining below freezing in some areas. Eastern Chubut and Río Negro could see intermittent rain and showers, southerly winds and very low wind chills.

Neuquén remains under snow warnings, with accumulations of up to 30 centimeters possible in the northwest and central-west of the province. Cuyo will also receive snow. In Mendoza, strong southerly winds could produce gusts above 65 km/h.