She glanced up at the sky which was heavily overcast.

By September the sky gets heavily overcast, although the rains are meagre.

The sky was heavily overcast and promised rain before the day was out.

When dawn did come, it was a low and gloomy one, the sky heavily overcast.

It was going to be another heavily overcast day, and that was a good thing.

It was heavily overcast that night, and even darker in the forests all.

The sky was heavily overcast, but so far the rain had held off.

India's monsoon season had begun, and the sky was heavily overcast.

It was still raining, and the skies were heavily overcast.

When a heavily overcast sky hid the moon, she became concerned about the passage of time.