Will it be early in first frost when it is cold in spring?

When the weather is cold in late spring, frost will come early.

In meteorology, the word "cold in spring" originated from agriculture. After entering the spring, the temperature rises rapidly, and in the later period, due to the frequent attack of strong cold air, the temperature drops obviously, and the low temperature lasts for more than 1 week, which is a weather phenomenon or process in which crops suffer from cold damage in a large area.

Frost refers to white ice crystals that condense on the ground or objects when the air near the ground is cooled below the frost point (dew point below 0) due to the radiation cooling of the ground. Frost is a weather phenomenon, which is composed of ice crystals. When the relative humidity in the air reaches 100%, water is separated from the air. In China, it belongs to ground meteorological observation, which generally appears in autumn to spring.