An unseasonably mild start to the week is expected in northern and central parts of Argentina, where it is winter. A plume of warm air will sink southwards from neighbouring Paraguay on Monday, lingering through Tuesday, before giving way to a cold front on Wednesday.
The maximum daytime temperatures on Monday and Tuesday will be up to 5C (9F) higher than normal in these regions, while Buenos Aires is forecast to be about 7C above average on Tuesday.
