dew-point spread

[ doo-point, dyoo- ]
/ ˈduˌpɔɪnt, ˈdyu- /

noun

the number of degrees of difference between the air temperature and the dew point.
Also called dew-point deficit, dew-point depression.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019