By Lisa Taylor
February 16, 2016
Category: Blog Weather
Frost is formed when a solid surface is chilled below the dew point - that is, the atmospheric temperature below which water droplets begin to condense and form water droplets. If a surface is colder than freezing - ice and frost will form on it, even if the air temperature is humid and not as cold. To put it simply, when water vapour in the air condenses into liquid water, you get raindrops and dew, and when it condenses in colder conditions you get frost and ice.
A ground frost refers to the formation of ice crystals on the ground, or any items outside such as garden furniture, wood, cars and trees. Ground frost occurs on items that have a surface temperature that is below the freezing point of water. It is not unusual for ground frost to be present without an air fro