Why is there hail when it is hot in summer?

Hail is a small water drop in the atmosphere, which flows to the sky through the atmosphere and condenses into small ice crystals.

Due to the fluctuation of the atmosphere, small ice crystals sink into water droplets, and different water droplets gather together and then float to form larger ice crystals than before. This is the principle that small hailstones grow up.

The average atmospheric temperature rises 100 m, and the temperature drops by 0.6 degrees. In areas where clouds and rain form, the temperature is usually below zero, so in many cases, the rain you see is ice crystals in the upper atmosphere, which melt into rain due to the rising temperature during the landing, and those "grown-up" ice crystals have fallen to the ground before they can completely melt, forming hail.

The air is strongly unstable, which is most likely to occur in the warm and humid season with strong sunshine. At that time, there was enough moisture in the air, and the bottom atmosphere was heated by the ground heated by the sun. A very unstable air column with cold top and hot bottom was formed, and strong convection occurred. Developed into a cumulonimbus cloud that can produce hail. Secondly, the strong airflow in this cloud is enough to support the formation of hail. So that the initial hailstones can be slowly combined with rain, snow, water droplets, etc., and to a certain extent, they will start to fall because the airflow can't support them, forming hail rain.

Summer weather is hot, thermal conditions are good, and thermal convection is easy to occur. When the thermal convection cloud reaches a certain height, the water vapor in the cloud condenses into ice beads, which will form hail, but it is unlikely that hail will occur frequently. Small ice beads roll up and down in the clouds, constantly absorbing the surrounding water droplets to condense into ice, getting heavier and heavier, and finally falling from the sky, which is hail.