Frost Point 2 topics · 2 sources ScienceWeatherDew point below freezing.NOAA National Weather Service — National Weather Service Glossary Cite Science› WeatherClimate ChangeFrost point The highest temperature at which atmospheric moisture will sublimate in the form of hoarfrost on a cooled surface. It is analogous to the dew point.NSIDC — Artic Climatology and Meteorology Glossary Cite