We've just learned about all types of weather fronts, like a stationary front and what happens when warm air and cold air run into each other.
When the water vapor in warm air is lifted high up into the sky, it gets colder.
The colder temperatures will eventually turn the water vapor back into tiny water droplets if it gets too cold.
The temperature that the water vapor changes into water drops is called the dew point.
If it is colder than the dew point, it turns to water.
If it is hotter than the dew point, it turns to vapor.
(from: wikipedia - dew point)
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