Why is it so cold in spring? Even if it is snowing and raining.

The weather has just warmed up, and cold air will naturally have precipitation when it meets warm current. Because the season is in early spring, it will still snow in some places. Although the temperature will rise during this period, the recovery of the earth will absorb a lot of heat, so the early spring is still relatively cold. The so-called cold and warm. After Tomb-Sweeping Day, the temperature will rise to more than ten degrees, which will make people feel the warmth of spring.