frost warning

Translations
предупреждение о заморозках
The weather forecast issued a frost warning for the weekend.
Прогноз погоды выпустил предупреждение о заморозках на выходные.
Definitions
A frost warning is a weather advisory issued by meteorological authorities to alert the public that temperatures are expected to drop to the point where frost may form, potentially damaging crops, plants, and sensitive outdoor equipment.