Overcast

The sky has become overcast.

All of a sudden the sky became overcast.

It's been overcast for the past few days.

Scarcely had we started out before the sky became overcast and down came the rain again.

It will be cold and the sky will be overcast.

The sky is overcast today.

The sky is overcast.

Ultraviolet light can also go through clouds, so you can get sunburns on an overcast day.

The sky became suddenly overcast with clouds.

It was overcast yesterday.