The sky had clouded over, and it would be dark earlier than usual.

The skies above them clouded over and the face of the earth grew dark.

The sky had clouded over and the whole world seemed gray.

During the rest of the year the skies are mostly clear or lightly clouded.

The sky had clouded over, and the moment was gone.

The following morning, the sky had clouded over; by the time they set out, snow was falling.

The sky had clouded over, and a soft rain began to fall.

The sky had clouded over, but Gerald knew it would not rain.

During the rest of the year, the sky will be clear or lightly clouded.

The sky clouded over later that day and then it began to rain.