The increased water content of a 'rain cloud' absorbs more of the light reflecting from the Earth, leading to a darker appearance. A less water dense one would simply reflect the light, leading to the bright, whiter clouds we associate with Summer.
the temperature does not affect rain, the rain clouds block the sun so it blocks some heat making it colder.the temperature when it rains matters on how hot it was before it rained
Layered clouds, cirrocumulus clouds, are high level clouds. They form above 20,000 feet where it is cold. They are composed of ice crystals.
Clouds form when water starts to condense, so clouds eventually grow until they rain themselves to death-clouds mean rain.
Clouds are made out of atmospheric water vapor. They form in part due to cooling in the upper atmosphere.
Clouds can form in one of four ways: mountains, the rise of air masses, cold or warm weather fronts, and surface heating. Cumulus clouds form by surface heating or mountains, status forms by weather fronts, and all types can form by the rising of air masses.