In addition to the cold, excess cloudiness will help keep the days cloudy, inhibiting the rise in temperature, so the afternoons will be colder.
The beginning of the week will be mild temperatures in areas of Rio Grande do Sul, Santa Catarina, Paraná and Mato Grosso do Sul. The polar air mass reaches southeastern states, such as São Paulo, Rio de Janeiro, Minas Gerais, with emphasis on the south of the state and Zona da Mata.
In addition to the cold, the Excess cloudiness will help keep days cloudy, inhibiting temperature rise, so the afternoons will be colder. However, this mass of polar air is not as intense as the first one, which even recorded negative temperatures in the mountainous regions of the south, but it will last longer.
On Tuesday (19), the chance of storms increases between the center-south of Minas Gerais, Triângulo Mineiro and the interior of Rio de Janeiro. Shocks can occur with strong intensity, accompanied by lightning and high volumes. In São Paulo there is also a condition for locally strong showers between the northwest and central-east of the state.
In the capital of São Paulo, at least until Wednesday (20), the weather will be closed with rain and drizzle and maximum temperatures in the region of 20°C and 21°C. In the southern region, firm weather predominates and rain is restricted to the east and northeast of Paraná.
In other areas, the dawn remains cold, especially in Rio Grande do Sul, west and south of Santa Catarina and south of Paraná, with the possibility of negative temperatures in the state of Rio Grande do Sul and a chance of frost in the mountainous areas and in the south of Rio Grande do Sul.
In the north and northeast of the country, the Intertropical Convergence Zone continues to influence precipitationwith emphasis on moderate to heavy rain in the states of Piauí, Maranhão, Amapá and Pará.
