Texas/New Mexico Stateline | Just think of humidity as how "full" the air is of moisture. Dewpoint is the amount of actual molecules of h2o in the air.
The warmer it is the more molecules of h2o the air will hold. So if there are x amount of molecules of h2o in the air, when it is hot the air may only be 50% of capacity, if it is cold, with that same number of molecules it may be 100% of capacity.
Don't know if that is layman or just muddy water.....
Dew on surfaces has to do with the temperature of the surfaces. If they happen to be a few degrees cooler than the air, it will condense moisture just like a glass of ice water. This is also why frost will form on windshields when the air temp is above freezing. The surfaces transfer heat away faster than air and frost will form.
Edited by milofarmer1 10/24/2018 17:25
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Humidity vs dewpoint vs dew
