What if the temperature is only 2 degrees Celsius?

Frost will form when the temperature is only 2 degrees Celsius. According to relevant data, when the minimum temperature drops to 2 degrees, frost will appear in some areas. Frost is a common agrometeorological disaster, which means that the temperature drops suddenly and the surface temperature drops sharply, causing damage to crops and even death. Frost occurs in winter and spring, which is mostly caused by the cold wave going south, and the temperature drops below zero degrees Celsius in a short time. Or affected by the cold wave, the weather changed from cloudy to sunny that night, which was caused by strong radiation cooling on the ground. This is what people often say.