Translation of "Overcast" in Portuguese

The sky is overcast.

O céu está nublado.

The sky is overcast today.

O céu está fechado hoje.

The sky has become overcast.

O céu ficou nublado.

All of a sudden the sky became overcast.

Subitamente o céu se cobriu.

- The sky is becoming cloudy.
- The sky has become overcast.

O céu está ficando nublado.

- It was cloudy yesterday.
- Yesterday was cloudy.
- It was overcast yesterday.

Estava nublado ontem.