It is of interest to note the appearance of the sky when cumulus clouds are present.
There were cumulus clouds of varying closeness all the time.
cumulus clouds, when they are well defined, and advance with the wind, foretell fine weather.
cumulus clouds on sunny days are generally at altitudes of 4000 to 7000 feet.
In the hot air a bank of cumulus clouds glowed red as from a distant conflagration.
The air was full of beautifying haze, and cumulus clouds in the south and west threw motionless shadows upon the mountain woods.
cumulus clouds should be smaller towards evening than they are at noon.
When the light falls sideways, as is usually the case, cumulus clouds show deep shadows.
So the sun is reflected, in beautiful colors sometimes, from the cumulus clouds which have passed over to the east.
In the aurora borealis the cumulus clouds appeared of a darker color, almost the gray of wool.