expression, ichidan verb
frost forms; become frosty; get covered with frost
Describes the natural phenomenon of frost appearing, typically on cold mornings. Often used in weather reports or seasonal descriptions.
今朝は冷え込んで、庭に霜が降りた。
It was freezing this morning, and frost formed in the garden.
明日の朝は霜が降りるかも
There may be frost tomorrow morning.