NORFOLK, Va. — The old saying goes “it’s not the heat, it’s the humidity!” And while that may be true, it’s only half of the story. It’s the “dew point” that really matters. But what is the dew point?

MIKE MOSS SAYS: Joe, Dew will not form if the temperature of the ground, grass, tops of cars, etc does not fall to equal the dew point. This can occur if the air is very dry so that it simply does not ...

John asks why meteorologists are concerned with dew point. The dew point is the temperature at which water vapor condenses into liquid water. If the liquid water condenses onto objects (grass, autos, ...

So, does dew really fall? We think of wet grass as something which comes from falling rain. Rain does fall of course and in some ways it's the product of the same process which makes dew. But yet it ...

MIKE MOSS SAYS: Edili, Dew requires a surface that is colder than the dew point of the air in contact with it, so dew will not form when the surface is warmer than the ambient dew point. In nature, ...