As this water vapor moves high into the air, the surrounding air cools it, causing it to condense and form clouds. The tiny droplets of water in clouds collect on bits of dust in the air. When these drops of water become heavy enough, they fall to the ground as rain (or hail or snow).
Sponsored Topics. Witt is a city in Montgomery County, Illinois, United States. The population was 991 at the 2000 census, and 949 at a 2009 estimate. Witt is located at 39Â°15â²16â³N 89Â°21â²4â³W / 39.25444Â°N 89.35111Â°W / 39.25444; -89.35111 (39.254574, -89.350980).
Caledonia is a village in Winnebago County and  Boone County, Illinois, United States. It is part of the Rockford, Illinois Metropolitan Statistical Area. The population was 197 at the 2010 census, down from 199 at the 2000 census. Caledonia is located at 42Â°22â²04â³N 88Â°53â²33â³W / 42.36778Â°N 88.8925Â°W / 42.36778; -88.8925 (42.367850, -88.892538). According to the United States Census Bureau, the village has a total area of 0.5 square miles (1.4 kmÂ²), all of it land.