Look at those clouds.
By evening, a few clouds had formed.
As a boy I used to lie on my back and look at white clouds.
If time were reversed, raindrops would collect themselves from the ground and fly up to the clouds.
After dark clouds, you get periods of refreshing clear weather.
When I was a kid, I used to think that fairy floss and clouds were alike.
The hooded clouds, like friars, tell their beads in drops of rain.
The President cannot make clouds to rain and cannot make the corn to grow, he cannot make business good; although when these things occur, political parties do claim some credit for the good things that have happened in this way.
The train belched clouds of black smoke into the air as it chugged away.
we have water vapor in clouds
By morning the clouds had lifted and the whole length of the Himalayas lay before us in all its splendor.
Clouds cast a shadow blacker than the night.
Alphonse looked at the racing clouds, his eyes turned to the sky.
Clouds blacken the sky (and everyone's mood).