The race got off to a clean start under mostly cloudy skies.
With the moon down and the sky mostly cloudy, it was very dark.
Yet I am like a flickering star over a cloudy sky.
There was a strong wind blowing that day too, out of a dark, cloudy sky.
The moon was huge and low in a cloudy, dark sky.
He looked up at 'his' hill, a gray mass under the cloudy sky.
I can track last week's eagle in a cloudy sky.
She looked up at the sun, which was not easy to find in the cloudy gray sky.
The background shows some soft trees against a cloudy sky.
Thus under cloudy skies, or even at night, animals can find their way.